uba_sbi.c revision 1.23.6.1
1 /* $NetBSD: uba_sbi.c,v 1.23.6.1 2008/04/03 12:42:28 mjf Exp $ */ 2 /* 3 * Copyright (c) 1982, 1986 The Regents of the University of California. 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. Neither the name of the University nor the names of its contributors 15 * may be used to endorse or promote products derived from this software 16 * without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * @(#)uba.c 7.10 (Berkeley) 12/16/90 31 * @(#)autoconf.c 7.20 (Berkeley) 5/9/91 32 */ 33 34 /* 35 * Copyright (c) 1996 Jonathan Stone. 36 * Copyright (c) 1994, 1996 Ludd, University of Lule}, Sweden. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed by the University of 49 * California, Berkeley and its contributors. 50 * 4. Neither the name of the University nor the names of its contributors 51 * may be used to endorse or promote products derived from this software 52 * without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 57 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 64 * SUCH DAMAGE. 65 * 66 * @(#)uba.c 7.10 (Berkeley) 12/16/90 67 * @(#)autoconf.c 7.20 (Berkeley) 5/9/91 68 */ 69 70 #include <sys/cdefs.h> 71 __KERNEL_RCSID(0, "$NetBSD: uba_sbi.c,v 1.23.6.1 2008/04/03 12:42:28 mjf Exp $"); 72 73 #include <sys/param.h> 74 #include <sys/device.h> 75 #include <sys/systm.h> 76 #include <sys/kernel.h> 77 78 #define _VAX_BUS_DMA_PRIVATE 79 #include <machine/bus.h> 80 #include <machine/mtpr.h> 81 #include <machine/nexus.h> 82 #include <machine/cpu.h> 83 #include <machine/sgmap.h> 84 #include <machine/scb.h> 85 86 #include <dev/qbus/ubavar.h> 87 88 #include <vax/uba/uba_common.h> 89 90 #include "locators.h" 91 #include "ioconf.h" 92 93 /* Some SBI-specific defines */ 94 #define UBASIZE (UBAPAGES * VAX_NBPG) 95 #define UMEMA8600(i) (0x20100000+(i)*0x40000) 96 #define UMEMB8600(i) (0x22100000+(i)*0x40000) 97 98 /* 99 * Some status registers. 100 */ 101 #define UBACNFGR_UBIC 0x00010000 /* unibus init complete */ 102 #define UBACNFGR_BITS \ 103 "\40\40PARFLT\37WSQFLT\36URDFLT\35ISQFLT\34MXTFLT\33XMTFLT\30ADPDN\27ADPUP\23UBINIT\22UBPDN\21UBIC" 104 105 #define UBACR_IFS 0x00000040 /* interrupt field switch */ 106 #define UBACR_BRIE 0x00000020 /* BR interrupt enable */ 107 #define UBACR_USEFIE 0x00000010 /* UNIBUS to SBI error field IE */ 108 #define UBACR_SUEFIE 0x00000008 /* SBI to UNIBUS error field IE */ 109 #define UBACR_ADINIT 0x00000001 /* adapter init */ 110 111 #define UBADPR_BNE 0x80000000 /* buffer not empty - purge */ 112 113 #define UBABRRVR_DIV 0x0000ffff /* device interrupt vector field */ 114 115 #define UBASR_BITS \ 116 "\20\13RDTO\12RDS\11CRD\10CXTER\7CXTMO\6DPPE\5IVMR\4MRPF\3LEB\2UBSTO\1UBSSYNTO" 117 118 const char ubasr_bits[] = UBASR_BITS; 119 120 /* 121 * The DW780 are directly connected to the SBI on 11/780 and 8600. 122 */ 123 static int dw780_match(device_t, cfdata_t, void *); 124 static void dw780_attach(device_t, device_t, void *); 125 static void dw780_init(struct uba_softc*); 126 static void dw780_beforescan(struct uba_softc *); 127 static void dw780_afterscan(struct uba_softc *); 128 static int dw780_errchk(struct uba_softc *); 129 static void uba_dw780int(void *); 130 static void ubaerror(struct uba_softc *, int *, int *); 131 #ifdef notyet 132 static void dw780_purge(struct uba_softc *, int); 133 #endif 134 135 CFATTACH_DECL_NEW(uba_sbi, sizeof(struct uba_vsoftc), 136 dw780_match, dw780_attach, NULL, NULL); 137 138 static struct evcnt strayint = EVCNT_INITIALIZER(EVCNT_TYPE_INTR, NULL, "uba","stray intr"); 139 static int strayinit = 0; 140 141 extern struct vax_bus_space vax_mem_bus_space; 142 143 int 144 dw780_match(device_t parent, cfdata_t cf, void *aux) 145 { 146 struct sbi_attach_args * const sa = aux; 147 148 if (cf->cf_loc[SBICF_TR] != sa->sa_nexnum && 149 cf->cf_loc[SBICF_TR] != SBICF_TR_DEFAULT) 150 return 0; 151 /* 152 * The uba type is actually only telling where the uba 153 * space is in nexus space. 154 */ 155 if ((sa->sa_type & ~3) != NEX_UBA0) 156 return 0; 157 158 return 1; 159 } 160 161 void 162 dw780_attach(device_t parent, device_t self, void *aux) 163 { 164 struct uba_vsoftc * const sc = device_private(self); 165 struct sbi_attach_args * const sa = aux; 166 int ubaddr = sa->sa_type & 3; 167 int i; 168 169 aprint_normal(": DW780\n"); 170 171 /* 172 * Fill in bus specific data. 173 */ 174 sc->uv_sc.uh_dev = self; 175 sc->uv_sc.uh_ubainit = dw780_init; 176 #ifdef notyet 177 sc->uv_sc.uh_ubapurge = dw780_purge; 178 #endif 179 sc->uv_sc.uh_beforescan = dw780_beforescan; 180 sc->uv_sc.uh_afterscan = dw780_afterscan; 181 sc->uv_sc.uh_errchk = dw780_errchk; 182 sc->uv_sc.uh_iot = sa->sa_iot; 183 sc->uv_sc.uh_dmat = &sc->uv_dmat; 184 sc->uv_sc.uh_nr = ubaddr; 185 sc->uv_uba = (void *)sa->sa_ioh; 186 sc->uh_ibase = VAX_NBPG + ubaddr * VAX_NBPG; 187 sc->uv_sc.uh_type = UBA_UBA; 188 189 if (strayinit++ == 0) evcnt_attach_static(&strayint); /* Setup stray 190 interrupt 191 counter. */ 192 193 /* 194 * Set up dispatch vectors for DW780. 195 */ 196 for (i = 0x14; i < 0x18; i++) 197 scb_vecalloc(vecnum(0, i, sa->sa_nexnum), uba_dw780int, 198 sc, SCB_ISTACK, &sc->uv_sc.uh_intrcnt); 199 evcnt_attach_dynamic(&sc->uv_sc.uh_intrcnt, EVCNT_TYPE_INTR, NULL, 200 device_xname(sc->uv_sc.uh_dev), "intr"); 201 202 /* 203 * Fill in variables used by the sgmap system. 204 */ 205 sc->uv_size = UBASIZE; /* Size in bytes of Unibus space */ 206 207 uba_dma_init(sc); 208 uba_attach(&sc->uv_sc, (sa->sa_sbinum ? UMEMB8600(ubaddr) : 209 UMEMA8600(ubaddr)) + (UBAPAGES * VAX_NBPG)); 210 } 211 212 void 213 dw780_beforescan(struct uba_softc *sc) 214 { 215 struct uba_vsoftc * const vc = (void *)sc; 216 volatile int *hej = &vc->uv_uba->uba_sr; 217 218 *hej = *hej; 219 vc->uv_uba->uba_cr = UBACR_IFS|UBACR_BRIE; 220 } 221 222 void 223 dw780_afterscan(struct uba_softc *sc) 224 { 225 struct uba_vsoftc * const vc = (void *)sc; 226 227 vc->uv_uba->uba_cr = UBACR_IFS | UBACR_BRIE | 228 UBACR_USEFIE | UBACR_SUEFIE | 229 (vc->uv_uba->uba_cr & 0x7c000000); 230 } 231 232 233 int 234 dw780_errchk(struct uba_softc *sc) 235 { 236 struct uba_vsoftc * const vc = (void *)sc; 237 volatile int *hej = &vc->uv_uba->uba_sr; 238 239 if (*hej) { 240 *hej = *hej; 241 return 1; 242 } 243 return 0; 244 } 245 246 void 247 uba_dw780int(void *arg) 248 { 249 extern void scb_stray(void *); 250 struct uba_vsoftc *vc = arg; 251 struct uba_regs *ur = vc->uv_uba; 252 struct ivec_dsp *ivec; 253 struct evcnt *uvec; 254 int br, vec; 255 256 br = mfpr(PR_IPL); 257 uvec = &vc->uv_sc.uh_intrcnt; 258 vec = ur->uba_brrvr[br - 0x14]; 259 if (vec <= 0) { 260 ubaerror(&vc->uv_sc, &br, &vec); 261 if (vec == 0) 262 return; 263 } 264 265 uvec->ev_count--; /* This interrupt should not be counted against 266 the uba. */ 267 ivec = &scb_vec[(vc->uh_ibase + vec)/4]; 268 if (cold && *ivec->hoppaddr == scb_stray) { 269 scb_fake(vec + vc->uh_ibase, br); 270 } else { 271 if (*ivec->hoppaddr == scb_stray) 272 strayint.ev_count++; /* Count against stray int */ 273 else 274 ivec->ev->ev_count++; /* Count against device */ 275 (*ivec->hoppaddr)(ivec->pushlarg); 276 } 277 } 278 279 void 280 dw780_init(struct uba_softc *sc) 281 { 282 struct uba_vsoftc *vc = (void *)sc; 283 284 vc->uv_uba->uba_cr = UBACR_ADINIT; 285 vc->uv_uba->uba_cr = UBACR_IFS|UBACR_BRIE|UBACR_USEFIE|UBACR_SUEFIE; 286 while ((vc->uv_uba->uba_cnfgr & UBACNFGR_UBIC) == 0) 287 ; 288 } 289 290 #ifdef notyet 291 void 292 dw780_purge(sc, bdp) 293 struct uba_softc *sc; 294 int bdp; 295 { 296 struct uba_vsoftc *vc = (void *)sc; 297 298 vc->uv_uba->uba_dpr[bdp] |= UBADPR_BNE; 299 } 300 #endif 301 302 int ubawedgecnt = 10; 303 int ubacrazy = 500; 304 int zvcnt_max = 5000; /* in 8 sec */ 305 int ubaerrcnt; 306 /* 307 * This routine is called by the locore code to process a UBA 308 * error on an 11/780 or 8600. The arguments are passed 309 * on the stack, and value-result (through some trickery). 310 * In particular, the uvec argument is used for further 311 * uba processing so the result aspect of it is very important. 312 */ 313 /*ARGSUSED*/ 314 void 315 ubaerror(struct uba_softc *uh, int *ipl, int *uvec) 316 { 317 struct uba_vsoftc *vc = (void *)uh; 318 struct uba_regs *uba = vc->uv_uba; 319 int sr, s; 320 char sbuf[256], sbuf2[256]; 321 322 if (*uvec == 0) { 323 /* 324 * Declare dt as unsigned so that negative values 325 * are handled as >8 below, in case time was set back. 326 */ 327 u_long dt = time_second - vc->uh_zvtime; 328 329 vc->uh_zvtotal++; 330 if (dt > 8) { 331 vc->uh_zvtime = time_second; 332 vc->uh_zvcnt = 0; 333 } 334 if (++vc->uh_zvcnt > zvcnt_max) { 335 aprint_error_dev(vc->uv_sc.uh_dev, 336 "too many zero vectors (%d in <%d sec)\n", 337 vc->uh_zvcnt, (int)dt + 1); 338 339 bitmask_snprintf(uba->uba_cnfgr&(~0xff), UBACNFGR_BITS, 340 sbuf, sizeof(sbuf)); 341 aprint_error( 342 "\tIPL 0x%x\n" 343 "\tcnfgr: %s\tAdapter Code: 0x%x\n", 344 *ipl, sbuf, uba->uba_cnfgr&0xff); 345 346 bitmask_snprintf(uba->uba_sr, ubasr_bits, 347 sbuf, sizeof(sbuf)); 348 aprint_error( 349 "\tsr: %s\n" 350 "\tdcr: %x (MIC %sOK)\n", 351 sbuf, uba->uba_dcr, 352 (uba->uba_dcr&0x8000000)?"":"NOT "); 353 354 ubareset(&vc->uv_sc); 355 } 356 return; 357 } 358 if (uba->uba_cnfgr & NEX_CFGFLT) { 359 bitmask_snprintf(uba->uba_sr, ubasr_bits, sbuf, sizeof(sbuf)); 360 bitmask_snprintf(uba->uba_cnfgr, NEXFLT_BITS, sbuf2, sizeof(sbuf2)); 361 aprint_error_dev(vc->uv_sc.uh_dev, 362 "sbi fault sr=%s cnfgr=%s\n", sbuf, sbuf2); 363 ubareset(&vc->uv_sc); 364 *uvec = 0; 365 return; 366 } 367 sr = uba->uba_sr; 368 s = spluba(); 369 bitmask_snprintf(uba->uba_sr, ubasr_bits, sbuf, sizeof(sbuf)); 370 aprint_error_dev(vc->uv_sc.uh_dev, 371 "uba error sr=%s fmer=%x fubar=%o\n", 372 sbuf, uba->uba_fmer, 4*uba->uba_fubar); 373 splx(s); 374 uba->uba_sr = sr; 375 *uvec &= UBABRRVR_DIV; 376 if (++ubaerrcnt % ubawedgecnt == 0) { 377 if (ubaerrcnt > ubacrazy) 378 panic("uba crazy"); 379 printf("ERROR LIMIT "); 380 ubareset(&vc->uv_sc); 381 *uvec = 0; 382 } 383 } 384
Indexes created Wed Oct 22 06:10:02 GMT 2025