uda.c revision 1.58
1 /* $NetBSD: uda.c,v 1.58 2008/03/11 05:34:02 matt Exp $ */ 2 /* 3 * Copyright (c) 1988 Regents of the University of California. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * Chris Torek. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)uda.c 7.32 (Berkeley) 2/13/91 34 */ 35 36 /* 37 * Copyright (c) 1996 Ludd, University of Lule}, Sweden. 38 * All rights reserved. 39 * 40 * This code is derived from software contributed to Berkeley by 41 * Chris Torek. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by the University of 54 * California, Berkeley and its contributors. 55 * 4. Neither the name of the University nor the names of its contributors 56 * may be used to endorse or promote products derived from this software 57 * without specific prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 62 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 69 * SUCH DAMAGE. 70 * 71 * @(#)uda.c 7.32 (Berkeley) 2/13/91 72 */ 73 74 /* 75 * UDA50 disk device driver 76 */ 77 78 #include <sys/cdefs.h> 79 __KERNEL_RCSID(0, "$NetBSD: uda.c,v 1.58 2008/03/11 05:34:02 matt Exp $"); 80 81 #include <sys/param.h> 82 #include <sys/kernel.h> 83 #include <sys/systm.h> 84 #include <sys/device.h> 85 #include <sys/buf.h> 86 #include <sys/bufq.h> 87 #include <sys/malloc.h> 88 89 #include <sys/bus.h> 90 #include <machine/sid.h> 91 92 #include <dev/qbus/ubavar.h> 93 94 #include <dev/mscp/mscp.h> 95 #include <dev/mscp/mscpreg.h> 96 #include <dev/mscp/mscpvar.h> 97 98 #include "ioconf.h" 99 100 /* 101 * Software status, per controller. 102 */ 103 struct uda_softc { 104 device_t sc_dev; /* Autoconfig info */ 105 struct uba_softc *sc_uh; 106 struct evcnt sc_intrcnt; /* Interrupt counting */ 107 struct uba_unit sc_unit; /* Struct common for UBA to communicate */ 108 struct ubinfo sc_ui; 109 bus_dma_tag_t sc_dmat; 110 bus_space_tag_t sc_iot; 111 bus_space_handle_t sc_iph; 112 bus_space_handle_t sc_sah; 113 struct mscp_softc *sc_softc; /* MSCP info (per mscpvar.h) */ 114 int sc_inq; 115 }; 116 117 static int udamatch(device_t, cfdata_t, void *); 118 static void udaattach(device_t, device_t, void *); 119 static void udareset(device_t ); 120 static void udaintr(void *); 121 static int udaready(struct uba_unit *); 122 static void udactlrdone(device_t ); 123 static int udaprint(void *, const char *); 124 static void udasaerror(device_t, int); 125 static void udago(device_t, struct mscp_xi *); 126 127 CFATTACH_DECL_NEW(mtc, sizeof(struct uda_softc), 128 udamatch, udaattach, NULL, NULL); 129 130 CFATTACH_DECL_NEW(uda, sizeof(struct uda_softc), 131 udamatch, udaattach, NULL, NULL); 132 133 /* 134 * More driver definitions, for generic MSCP code. 135 */ 136 struct mscp_ctlr uda_mscp_ctlr = { 137 udactlrdone, 138 udago, 139 udasaerror, 140 }; 141 142 int 143 udaprint(void *aux, const char *name) 144 { 145 if (name) 146 aprint_normal("%s: mscpbus", name); 147 return UNCONF; 148 } 149 150 /* 151 * Poke at a supposed UDA50 to see if it is there. 152 */ 153 int 154 udamatch(device_t parent, cfdata_t cf, void *aux) 155 { 156 struct uba_attach_args *ua = aux; 157 struct uba_softc *uh = device_private(parent); 158 struct mscp_softc mi; /* Nice hack */ 159 int tries; 160 161 /* Get an interrupt vector. */ 162 163 mi.mi_iot = ua->ua_iot; 164 mi.mi_iph = ua->ua_ioh; 165 mi.mi_sah = ua->ua_ioh + 2; 166 mi.mi_swh = ua->ua_ioh + 2; 167 168 /* 169 * Initialise the controller (partially). The UDA50 programmer's 170 * manual states that if initialisation fails, it should be retried 171 * at least once, but after a second failure the port should be 172 * considered `down'; it also mentions that the controller should 173 * initialise within ten seconds. Or so I hear; I have not seen 174 * this manual myself. 175 */ 176 tries = 0; 177 again: 178 179 bus_space_write_2(mi.mi_iot, mi.mi_iph, 0, 0); /* Start init */ 180 if (mscp_waitstep(&mi, MP_STEP1, MP_STEP1) == 0) 181 return 0; /* Nothing here... */ 182 183 bus_space_write_2(mi.mi_iot, mi.mi_sah, 0, 184 MP_ERR | (NCMDL2 << 11) | (NRSPL2 << 8) | MP_IE | 185 ((uh->uh_lastiv - 4) >> 2)); 186 187 if (mscp_waitstep(&mi, MP_STEP2, MP_STEP2) == 0) { 188 printf("udaprobe: init step2 no change. sa=%x\n", 189 bus_space_read_2(mi.mi_iot, mi.mi_sah, 0)); 190 goto bad; 191 } 192 193 /* should have interrupted by now */ 194 return 1; 195 bad: 196 if (++tries < 2) 197 goto again; 198 return 0; 199 } 200 201 void 202 udaattach(device_t parent, device_t self, void *aux) 203 { 204 struct uda_softc *sc = device_private(self); 205 struct uba_attach_args *ua = aux; 206 struct mscp_attach_args ma; 207 int error; 208 209 printf("\n"); 210 211 sc->sc_dev = self; 212 sc->sc_uh = device_private(parent); 213 214 sc->sc_uh->uh_lastiv -= 4; /* remove dynamic interrupt vector */ 215 216 uba_intr_establish(ua->ua_icookie, ua->ua_cvec, 217 udaintr, sc, &sc->sc_intrcnt); 218 uba_reset_establish(udareset, sc->sc_dev); 219 evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR, ua->ua_evcnt, 220 device_xname(sc->sc_dev), "intr"); 221 222 sc->sc_iot = ua->ua_iot; 223 sc->sc_iph = ua->ua_ioh; 224 sc->sc_sah = ua->ua_ioh + 2; 225 sc->sc_dmat = ua->ua_dmat; 226 227 /* 228 * Fill in the uba_unit struct, so we can communicate with the uba. 229 */ 230 sc->sc_unit.uu_dev = self; /* Backpointer to softc */ 231 sc->sc_unit.uu_ready = udaready;/* go routine called from adapter */ 232 sc->sc_unit.uu_keepbdp = vax_cputype == VAX_750 ? 1 : 0; 233 234 /* 235 * Map the communication area and command and 236 * response packets into Unibus space. 237 */ 238 sc->sc_ui.ui_size = sizeof(struct mscp_pack); 239 if ((error = ubmemalloc(sc->sc_uh, &sc->sc_ui, UBA_CANTWAIT))) 240 return printf("ubmemalloc failed: %d\n", error); 241 242 bzero(sc->sc_ui.ui_vaddr, sizeof (struct mscp_pack)); 243 244 /* 245 * The only thing that differ UDA's and Tape ctlr's is 246 * their vcid. Beacuse there are no way to determine which 247 * ctlr type it is, we check what is generated and later 248 * set the correct vcid. 249 */ 250 ma.ma_type = (device_is_a(self, "mtc") ? MSCPBUS_TAPE : MSCPBUS_DISK); 251 252 ma.ma_mc = &uda_mscp_ctlr; 253 ma.ma_type |= MSCPBUS_UDA; 254 ma.ma_uda = (struct mscp_pack *)sc->sc_ui.ui_vaddr; 255 ma.ma_softc = &sc->sc_softc; 256 ma.ma_iot = sc->sc_iot; 257 ma.ma_iph = sc->sc_iph; 258 ma.ma_sah = sc->sc_sah; 259 ma.ma_swh = sc->sc_sah; 260 ma.ma_dmat = sc->sc_dmat; 261 ma.ma_dmam = sc->sc_ui.ui_dmam; 262 ma.ma_ivec = sc->sc_uh->uh_lastiv; 263 ma.ma_ctlrnr = (ua->ua_iaddr == 0172150 ? 0 : 1); /* XXX */ 264 ma.ma_adapnr = sc->sc_uh->uh_nr; 265 config_found(sc->sc_dev, &ma, udaprint); 266 } 267 268 /* 269 * Start a transfer if there are free resources available, otherwise 270 * let it go in udaready, forget it for now. 271 * Called from mscp routines. 272 */ 273 void 274 udago(device_t dv, struct mscp_xi *mxi) 275 { 276 struct uda_softc *sc = device_private(dv); 277 struct uba_unit *uu; 278 struct buf *bp = mxi->mxi_bp; 279 int err; 280 281 /* 282 * If we already have transfers queued, don't try to load 283 * the map again. 284 */ 285 if (sc->sc_inq == 0) { 286 err = bus_dmamap_load(sc->sc_dmat, mxi->mxi_dmam, 287 bp->b_data, bp->b_bcount, 288 (bp->b_flags & B_PHYS ? bp->b_proc : 0), BUS_DMA_NOWAIT); 289 if (err == 0) { 290 mscp_dgo(sc->sc_softc, mxi); 291 return; 292 } 293 } 294 uu = malloc(sizeof(struct uba_unit), M_DEVBUF, M_NOWAIT|M_ZERO); 295 if (uu == NULL) 296 panic("udago: no mem"); 297 uu->uu_ready = udaready; 298 uu->uu_dev = dv; 299 uu->uu_ref = mxi; 300 uba_enqueue(uu); 301 sc->sc_inq++; 302 } 303 304 /* 305 * Called if we have been blocked for resources, and resources 306 * have been freed again. Return 1 if we could start all 307 * transfers again, 0 if we still are waiting. 308 * Called from uba resource free routines. 309 */ 310 int 311 udaready(struct uba_unit *uu) 312 { 313 struct uda_softc *sc = device_private(uu->uu_dev); 314 struct mscp_xi *mxi = uu->uu_ref; 315 struct buf *bp = mxi->mxi_bp; 316 int err; 317 318 err = bus_dmamap_load(sc->sc_dmat, mxi->mxi_dmam, bp->b_data, 319 bp->b_bcount, (bp->b_flags & B_PHYS ? bp->b_proc : 0), 320 BUS_DMA_NOWAIT); 321 322 if (err) 323 return 0; 324 mscp_dgo(sc->sc_softc, mxi); 325 sc->sc_inq--; 326 free(uu, M_DEVBUF); 327 return 1; 328 } 329 330 static const struct saerr { 331 int code; /* error code (including UDA_ERR) */ 332 const char *desc; /* what it means: Efoo => foo error */ 333 } saerr[] = { 334 { 0100001, "Eunibus packet read" }, 335 { 0100002, "Eunibus packet write" }, 336 { 0100003, "EUDA ROM and RAM parity" }, 337 { 0100004, "EUDA RAM parity" }, 338 { 0100005, "EUDA ROM parity" }, 339 { 0100006, "Eunibus ring read" }, 340 { 0100007, "Eunibus ring write" }, 341 { 0100010, " unibus interrupt master failure" }, 342 { 0100011, "Ehost access timeout" }, 343 { 0100012, " host exceeded command limit" }, 344 { 0100013, " unibus bus master failure" }, 345 { 0100014, " DM XFC fatal error" }, 346 { 0100015, " hardware timeout of instruction loop" }, 347 { 0100016, " invalid virtual circuit id" }, 348 { 0100017, "Eunibus interrupt write" }, 349 { 0104000, "Efatal sequence" }, 350 { 0104040, " D proc ALU" }, 351 { 0104041, "ED proc control ROM parity" }, 352 { 0105102, "ED proc w/no BD#2 or RAM parity" }, 353 { 0105105, "ED proc RAM buffer" }, 354 { 0105152, "ED proc SDI" }, 355 { 0105153, "ED proc write mode wrap serdes" }, 356 { 0105154, "ED proc read mode serdes, RSGEN & ECC" }, 357 { 0106040, "EU proc ALU" }, 358 { 0106041, "EU proc control reg" }, 359 { 0106042, " U proc DFAIL/cntl ROM parity/BD #1 test CNT" }, 360 { 0106047, " U proc const PROM err w/D proc running SDI test" }, 361 { 0106055, " unexpected trap" }, 362 { 0106071, "EU proc const PROM" }, 363 { 0106072, "EU proc control ROM parity" }, 364 { 0106200, "Estep 1 data" }, 365 { 0107103, "EU proc RAM parity" }, 366 { 0107107, "EU proc RAM buffer" }, 367 { 0107115, " test count wrong (BD 12)" }, 368 { 0112300, "Estep 2" }, 369 { 0122240, "ENPR" }, 370 { 0122300, "Estep 3" }, 371 { 0142300, "Estep 4" }, 372 { 0, " unknown error code" } 373 }; 374 375 /* 376 * If the error bit was set in the controller status register, gripe, 377 * then (optionally) reset the controller and requeue pending transfers. 378 */ 379 void 380 udasaerror(device_t dev, int doreset) 381 { 382 struct uda_softc *sc = device_private(dev); 383 int code = bus_space_read_2(sc->sc_iot, sc->sc_sah, 0); 384 const struct saerr *e; 385 386 if ((code & MP_ERR) == 0) 387 return; 388 for (e = saerr; e->code; e++) 389 if (e->code == code) 390 break; 391 aprint_error_dev(sc->sc_dev, "controller error, sa=0%o (%s%s)\n", 392 code, e->desc + 1, *e->desc == 'E' ? " error" : ""); 393 #if 0 /* XXX we just avoid panic when autoconfig non-existent KFQSA devices */ 394 if (doreset) { 395 mscp_requeue(sc->sc_softc); 396 /* (void) udainit(sc); XXX */ 397 } 398 #endif 399 } 400 401 /* 402 * Interrupt routine. Depending on the state of the controller, 403 * continue initialisation, or acknowledge command and response 404 * interrupts, and process responses. 405 */ 406 static void 407 udaintr(void *arg) 408 { 409 struct uda_softc *sc = arg; 410 411 /* ctlr fatal error */ 412 if (bus_space_read_2(sc->sc_iot, sc->sc_sah, 0) & MP_ERR) { 413 udasaerror(sc->sc_dev, 1); 414 return; 415 } 416 /* 417 * Handle buffer purge requests. 418 * XXX - should be done in bus_dma_sync(). 419 */ 420 #ifdef notyet 421 if (ud->mp_ca.ca_bdp) { 422 if (sc->sc_uh->uh_ubapurge) 423 (*sc->sc_uh->uh_ubapurge)(sc->sc_uh, 424 ud->mp_ca.ca_bdp); 425 /* signal purge complete */ 426 bus_space_write_2(sc->sc_iot, sc->sc_sah, 0, 0); 427 } 428 #endif 429 430 mscp_intr(sc->sc_softc); 431 } 432 433 /* 434 * A Unibus reset has occurred on UBA uban. Reinitialise the controller(s) 435 * on that Unibus, and requeue outstanding I/O. 436 */ 437 static void 438 udareset(device_t dev) 439 { 440 struct uda_softc *sc = device_private(dev); 441 /* 442 * Our BDP (if any) is gone; our command (if any) is 443 * flushed; the device is no longer mapped; and the 444 * UDA50 is not yet initialised. 445 */ 446 if (sc->sc_unit.uu_bdp) { 447 /* printf("<%d>", UBAI_BDP(sc->sc_unit.uu_bdp)); */ 448 sc->sc_unit.uu_bdp = 0; 449 } 450 451 /* reset queues and requeue pending transfers */ 452 mscp_requeue(sc->sc_softc); 453 454 /* 455 * If it fails to initialise we will notice later and 456 * try again (and again...). Do not call udastart() 457 * here; it will be done after the controller finishes 458 * initialisation. 459 */ 460 /* XXX if (udainit(sc)) */ 461 printf(" (hung)"); 462 } 463 464 void 465 udactlrdone(device_t dev) 466 { 467 struct uda_softc *sc = device_private(dev); 468 int s; 469 470 s = spluba(); 471 uba_done(sc->sc_uh); 472 splx(s); 473 } 474
Indexes created Tue Sep 30 20:09:53 GMT 2025