1 /* $OpenBSD: esp_sbus.c,v 1.22 2009/02/16 21:19:07 miod Exp $ */ 2 /* $NetBSD: esp_sbus.c,v 1.14 2001/04/25 17:53:37 bouyer Exp $ */ 3 4 /*- 5 * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Charles M. Hannum; Jason R. Thorpe of the Numerical Aerospace 10 * Simulation Facility, NASA Ames Research Center; Paul Kranenburg. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include <sys/types.h> 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/device.h> 38 #include <sys/buf.h> 39 #include <sys/malloc.h> 40 41 #include <scsi/scsi_all.h> 42 #include <scsi/scsiconf.h> 43 #include <scsi/scsi_message.h> 44 45 #include <machine/bus.h> 46 #include <machine/intr.h> 47 #include <machine/autoconf.h> 48 49 #include <dev/ic/lsi64854reg.h> 50 #include <dev/ic/lsi64854var.h> 51 52 #include <dev/ic/ncr53c9xreg.h> 53 #include <dev/ic/ncr53c9xvar.h> 54 55 #include <dev/sbus/sbusvar.h> 56 57 struct scsi_adapter esp_switch = { 58 ncr53c9x_scsi_cmd, 59 scsi_minphys, /* no max at this level; handled by DMA code */ 60 NULL, 61 NULL, 62 }; 63 64 struct scsi_device esp_dev = { 65 NULL, /* Use default error handler */ 66 NULL, /* have a queue, served by this */ 67 NULL, /* have no async handler */ 68 NULL, /* Use default 'done' routine */ 69 }; 70 71 /* #define ESP_SBUS_DEBUG */ 72 73 static int esp_unit_offset; 74 75 struct esp_softc { 76 struct ncr53c9x_softc sc_ncr53c9x; /* glue to MI code */ 77 78 bus_space_tag_t sc_bustag; 79 bus_dma_tag_t sc_dmatag; 80 81 bus_space_handle_t sc_reg; /* the registers */ 82 struct lsi64854_softc *sc_dma; /* pointer to my dma */ 83 84 int sc_pri; /* SBUS priority */ 85 }; 86 87 void espattach_sbus(struct device *, struct device *, void *); 88 void espattach_dma(struct device *, struct device *, void *); 89 int espmatch_sbus(struct device *, void *, void *); 90 91 92 /* Linkup to the rest of the kernel */ 93 struct cfattach esp_sbus_ca = { 94 sizeof(struct esp_softc), espmatch_sbus, espattach_sbus 95 }; 96 struct cfattach esp_dma_ca = { 97 sizeof(struct esp_softc), espmatch_sbus, espattach_dma 98 }; 99 100 /* 101 * Functions and the switch for the MI code. 102 */ 103 static u_char esp_read_reg(struct ncr53c9x_softc *, int); 104 static void esp_write_reg(struct ncr53c9x_softc *, int, u_char); 105 static u_char esp_rdreg1(struct ncr53c9x_softc *, int); 106 static void esp_wrreg1(struct ncr53c9x_softc *, int, u_char); 107 static int esp_dma_isintr(struct ncr53c9x_softc *); 108 static void esp_dma_reset(struct ncr53c9x_softc *); 109 static int esp_dma_intr(struct ncr53c9x_softc *); 110 static int esp_dma_setup(struct ncr53c9x_softc *, caddr_t *, 111 size_t *, int, size_t *); 112 static void esp_dma_go(struct ncr53c9x_softc *); 113 static void esp_dma_stop(struct ncr53c9x_softc *); 114 static int esp_dma_isactive(struct ncr53c9x_softc *); 115 116 static struct ncr53c9x_glue esp_sbus_glue = { 117 esp_read_reg, 118 esp_write_reg, 119 esp_dma_isintr, 120 esp_dma_reset, 121 esp_dma_intr, 122 esp_dma_setup, 123 esp_dma_go, 124 esp_dma_stop, 125 esp_dma_isactive, 126 NULL, /* gl_clear_latched_intr */ 127 }; 128 129 static struct ncr53c9x_glue esp_sbus_glue1 = { 130 esp_rdreg1, 131 esp_wrreg1, 132 esp_dma_isintr, 133 esp_dma_reset, 134 esp_dma_intr, 135 esp_dma_setup, 136 esp_dma_go, 137 esp_dma_stop, 138 esp_dma_isactive, 139 NULL, /* gl_clear_latched_intr */ 140 }; 141 142 static void espattach(struct esp_softc *, struct ncr53c9x_glue *); 143 144 int 145 espmatch_sbus(struct device *parent, void *vcf, void *aux) 146 { 147 struct cfdata *cf = vcf; 148 int rv; 149 struct sbus_attach_args *sa = aux; 150 151 if (strcmp("SUNW,fas", sa->sa_name) == 0) 152 return 1; 153 154 rv = (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0 || 155 strcmp("ptscII", sa->sa_name) == 0); 156 return (rv); 157 } 158 159 void 160 espattach_sbus(struct device *parent, struct device *self, void *aux) 161 { 162 struct esp_softc *esc = (void *)self; 163 struct ncr53c9x_softc *sc = &esc->sc_ncr53c9x; 164 struct sbus_attach_args *sa = aux; 165 struct lsi64854_softc *lsc; 166 int burst, sbusburst; 167 168 esc->sc_bustag = sa->sa_bustag; 169 esc->sc_dmatag = sa->sa_dmatag; 170 171 sc->sc_id = getpropint(sa->sa_node, "initiator-id", 7); 172 sc->sc_freq = getpropint(sa->sa_node, "clock-frequency", -1); 173 if (sc->sc_freq < 0) 174 sc->sc_freq = sa->sa_frequency; 175 176 #ifdef ESP_SBUS_DEBUG 177 printf("%s: espattach_sbus: sc_id %d, freq %d\n", 178 self->dv_xname, sc->sc_id, sc->sc_freq); 179 #endif 180 181 if (strcmp("SUNW,fas", sa->sa_name) == 0) { 182 /* 183 * offset searches for other esp/dma devices. 184 */ 185 esp_unit_offset++; 186 187 /* 188 * fas has 2 register spaces: dma(lsi64854) and SCSI core (ncr53c9x) 189 */ 190 if (sa->sa_nreg != 2) { 191 printf("%s: %d register spaces\n", self->dv_xname, sa->sa_nreg); 192 return; 193 } 194 195 /* 196 * allocate space for dma, in SUNW,fas there are no separate 197 * dma device 198 */ 199 lsc = malloc(sizeof (struct lsi64854_softc), M_DEVBUF, M_NOWAIT); 200 201 if (lsc == NULL) { 202 printf("%s: out of memory (lsi64854_softc)\n", 203 self->dv_xname); 204 return; 205 } 206 esc->sc_dma = lsc; 207 208 lsc->sc_bustag = sa->sa_bustag; 209 lsc->sc_dmatag = sa->sa_dmatag; 210 211 bcopy(sc->sc_dev.dv_xname, lsc->sc_dev.dv_xname, 212 sizeof (lsc->sc_dev.dv_xname)); 213 214 /* Map dma registers */ 215 if (sbus_bus_map(sa->sa_bustag, sa->sa_reg[0].sbr_slot, 216 sa->sa_reg[0].sbr_offset, sa->sa_reg[0].sbr_size, 217 0, 0, &lsc->sc_regs) != 0) { 218 printf("%s: cannot map dma registers\n", self->dv_xname); 219 return; 220 } 221 222 /* 223 * XXX is this common(from bpp.c), the same in dma_sbus...etc. 224 * 225 * Get transfer burst size from PROM and plug it into the 226 * controller registers. This is needed on the Sun4m; do 227 * others need it too? 228 */ 229 sbusburst = ((struct sbus_softc *)parent)->sc_burst; 230 if (sbusburst == 0) 231 sbusburst = SBUS_BURST_32 - 1; /* 1->16 */ 232 233 burst = getpropint(sa->sa_node, "burst-sizes", -1); 234 235 #ifdef ESP_SBUS_DEBUG 236 printf("espattach_sbus: burst 0x%x, sbus 0x%x\n", 237 burst, sbusburst); 238 #endif 239 240 if (burst == -1) 241 /* take SBus burst sizes */ 242 burst = sbusburst; 243 244 /* Clamp at parent's burst sizes */ 245 burst &= sbusburst; 246 lsc->sc_burst = (burst & SBUS_BURST_32) ? 32 : 247 (burst & SBUS_BURST_16) ? 16 : 0; 248 249 lsc->sc_channel = L64854_CHANNEL_SCSI; 250 lsc->sc_client = sc; 251 252 lsi64854_attach(lsc); 253 254 /* 255 * map SCSI core registers 256 */ 257 if (sbus_bus_map(sa->sa_bustag, sa->sa_reg[1].sbr_slot, 258 sa->sa_reg[1].sbr_offset, sa->sa_reg[1].sbr_size, 259 0, 0, &esc->sc_reg) != 0) { 260 printf("%s: cannot map scsi core registers\n", 261 self->dv_xname); 262 return; 263 } 264 265 if (sa->sa_nintr == 0) { 266 printf("%s: no interrupt property\n", self->dv_xname); 267 return; 268 } 269 270 esc->sc_pri = sa->sa_pri; 271 272 printf("%s", self->dv_xname); 273 espattach(esc, &esp_sbus_glue); 274 275 return; 276 } 277 278 /* 279 * Find the DMA by poking around the dma device structures 280 * 281 * What happens here is that if the dma driver has not been 282 * configured, then this returns a NULL pointer. Then when the 283 * dma actually gets configured, it does the opposing test, and 284 * if the sc->sc_esp field in its softc is NULL, then tries to 285 * find the matching esp driver. 286 */ 287 esc->sc_dma = (struct lsi64854_softc *) 288 getdevunit("dma", sc->sc_dev.dv_unit - esp_unit_offset); 289 290 /* 291 * and a back pointer to us, for DMA 292 */ 293 if (esc->sc_dma) 294 esc->sc_dma->sc_client = sc; 295 else { 296 printf("\n"); 297 panic("espattach: no dma found"); 298 } 299 300 /* 301 * The `ESC' DMA chip must be reset before we can access 302 * the esp registers. 303 */ 304 if (esc->sc_dma->sc_rev == DMAREV_ESC) 305 DMA_RESET(esc->sc_dma); 306 307 /* 308 * Map my registers in, if they aren't already in virtual 309 * address space. 310 */ 311 if (sa->sa_npromvaddrs) { 312 if (bus_space_map(sa->sa_bustag, sa->sa_promvaddrs[0], 313 sa->sa_size, BUS_SPACE_MAP_PROMADDRESS, 314 &esc->sc_reg) != 0) { 315 printf("%s @ sbus: cannot map registers\n", 316 self->dv_xname); 317 return; 318 } 319 } else { 320 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, 321 sa->sa_offset, sa->sa_size, 0, 0, &esc->sc_reg) != 0) { 322 printf("%s @ sbus: cannot map registers\n", 323 self->dv_xname); 324 return; 325 } 326 } 327 328 if (sa->sa_nintr == 0) { 329 /* 330 * No interrupt properties: we quit; this might 331 * happen on e.g. a Sparc X terminal. 332 */ 333 printf("\n%s: no interrupt property\n", self->dv_xname); 334 return; 335 } 336 337 esc->sc_pri = sa->sa_pri; 338 339 if (strcmp("ptscII", sa->sa_name) == 0) { 340 espattach(esc, &esp_sbus_glue1); 341 } else { 342 espattach(esc, &esp_sbus_glue); 343 } 344 } 345 346 void 347 espattach_dma(struct device *parent, struct device *self, void *aux) 348 { 349 struct esp_softc *esc = (void *)self; 350 struct ncr53c9x_softc *sc = &esc->sc_ncr53c9x; 351 struct sbus_attach_args *sa = aux; 352 353 if (strcmp("ptscII", sa->sa_name) == 0) { 354 return; 355 } 356 357 esc->sc_bustag = sa->sa_bustag; 358 esc->sc_dmatag = sa->sa_dmatag; 359 360 sc->sc_id = getpropint(sa->sa_node, "initiator-id", 7); 361 sc->sc_freq = getpropint(sa->sa_node, "clock-frequency", -1); 362 363 esc->sc_dma = (struct lsi64854_softc *)parent; 364 esc->sc_dma->sc_client = sc; 365 366 /* 367 * Map my registers in, if they aren't already in virtual 368 * address space. 369 */ 370 if (sa->sa_npromvaddrs) { 371 if (bus_space_map(sa->sa_bustag, sa->sa_promvaddrs[0], 372 sa->sa_size /* ??? */, BUS_SPACE_MAP_PROMADDRESS, 373 &esc->sc_reg) != 0) { 374 printf("%s @ dma: cannot map registers\n", 375 self->dv_xname); 376 return; 377 } 378 } else { 379 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, sa->sa_offset, 380 sa->sa_size, 0, 0, &esc->sc_reg) != 0) { 381 printf("%s @ dma: cannot map registers\n", 382 self->dv_xname); 383 return; 384 } 385 } 386 387 if (sa->sa_nintr == 0) { 388 /* 389 * No interrupt properties: we quit; this might 390 * happen on e.g. a Sparc X terminal. 391 */ 392 printf("\n%s: no interrupt property\n", self->dv_xname); 393 return; 394 } 395 396 esc->sc_pri = sa->sa_pri; 397 398 espattach(esc, &esp_sbus_glue); 399 } 400 401 402 /* 403 * Attach this instance, and then all the sub-devices 404 */ 405 void 406 espattach(struct esp_softc *esc, struct ncr53c9x_glue *gluep) 407 { 408 struct ncr53c9x_softc *sc = &esc->sc_ncr53c9x; 409 void *icookie; 410 unsigned int uid = 0; 411 412 /* 413 * Set up glue for MI code early; we use some of it here. 414 */ 415 sc->sc_glue = gluep; 416 417 /* gimme MHz */ 418 sc->sc_freq /= 1000000; 419 420 /* 421 * XXX More of this should be in ncr53c9x_attach(), but 422 * XXX should we really poke around the chip that much in 423 * XXX the MI code? Think about this more... 424 */ 425 426 /* 427 * It is necessary to try to load the 2nd config register here, 428 * to find out what rev the esp chip is, else the ncr53c9x_reset 429 * will not set up the defaults correctly. 430 */ 431 sc->sc_cfg1 = sc->sc_id | NCRCFG1_PARENB; 432 sc->sc_cfg2 = NCRCFG2_SCSI2 | NCRCFG2_RPE; 433 sc->sc_cfg3 = NCRCFG3_CDB; 434 NCR_WRITE_REG(sc, NCR_CFG2, sc->sc_cfg2); 435 436 if ((NCR_READ_REG(sc, NCR_CFG2) & ~NCRCFG2_RSVD) != 437 (NCRCFG2_SCSI2 | NCRCFG2_RPE)) { 438 sc->sc_rev = NCR_VARIANT_ESP100; 439 } else { 440 sc->sc_cfg2 = NCRCFG2_SCSI2; 441 NCR_WRITE_REG(sc, NCR_CFG2, sc->sc_cfg2); 442 sc->sc_cfg3 = 0; 443 NCR_WRITE_REG(sc, NCR_CFG3, sc->sc_cfg3); 444 sc->sc_cfg3 = (NCRCFG3_CDB | NCRCFG3_FCLK); 445 NCR_WRITE_REG(sc, NCR_CFG3, sc->sc_cfg3); 446 if (NCR_READ_REG(sc, NCR_CFG3) != 447 (NCRCFG3_CDB | NCRCFG3_FCLK)) { 448 sc->sc_rev = NCR_VARIANT_ESP100A; 449 } else { 450 /* NCRCFG2_FE enables > 64K transfers */ 451 sc->sc_cfg2 |= NCRCFG2_FE; 452 sc->sc_cfg3 = 0; 453 NCR_WRITE_REG(sc, NCR_CFG3, sc->sc_cfg3); 454 sc->sc_rev = NCR_VARIANT_ESP200; 455 456 /* XXX spec says it's valid after power up or chip reset */ 457 uid = NCR_READ_REG(sc, NCR_UID); 458 if (((uid & 0xf8) >> 3) == 0x0a) /* XXX */ 459 sc->sc_rev = NCR_VARIANT_FAS366; 460 } 461 } 462 463 #ifdef ESP_SBUS_DEBUG 464 printf("espattach: revision %d, uid 0x%x\n", sc->sc_rev, uid); 465 #endif 466 467 /* 468 * XXX minsync and maxxfer _should_ be set up in MI code, 469 * XXX but it appears to have some dependency on what sort 470 * XXX of DMA we're hooked up to, etc. 471 */ 472 473 /* 474 * This is the value used to start sync negotiations 475 * Note that the NCR register "SYNCTP" is programmed 476 * in "clocks per byte", and has a minimum value of 4. 477 * The SCSI period used in negotiation is one-fourth 478 * of the time (in nanoseconds) needed to transfer one byte. 479 * Since the chip's clock is given in MHz, we have the following 480 * formula: 4 * period = (1000 / freq) * 4 481 */ 482 sc->sc_minsync = 1000 / sc->sc_freq; 483 484 /* 485 * Alas, we must now modify the value a bit, because it's 486 * only valid when can switch on FASTCLK and FASTSCSI bits 487 * in config register 3... 488 */ 489 switch (sc->sc_rev) { 490 case NCR_VARIANT_ESP100: 491 sc->sc_maxxfer = 64 * 1024; 492 sc->sc_minsync = 0; /* No synch on old chip? */ 493 break; 494 495 case NCR_VARIANT_ESP100A: 496 sc->sc_maxxfer = 64 * 1024; 497 /* Min clocks/byte is 5 */ 498 sc->sc_minsync = ncr53c9x_cpb2stp(sc, 5); 499 break; 500 501 case NCR_VARIANT_ESP200: 502 case NCR_VARIANT_FAS366: 503 sc->sc_maxxfer = 16 * 1024 * 1024; 504 /* XXX - do actually set FAST* bits */ 505 break; 506 } 507 508 /* Establish interrupt channel */ 509 icookie = bus_intr_establish(esc->sc_bustag, esc->sc_pri, IPL_BIO, 0, 510 ncr53c9x_intr, sc, sc->sc_dev.dv_xname); 511 512 /* Turn on target selection using the `dma' method */ 513 if (sc->sc_rev != NCR_VARIANT_FAS366) 514 sc->sc_features |= NCR_F_DMASELECT; 515 516 /* Do the common parts of attachment. */ 517 ncr53c9x_attach(sc, &esp_switch, &esp_dev); 518 } 519 520 /* 521 * Glue functions. 522 */ 523 524 #ifdef ESP_SBUS_DEBUG 525 int esp_sbus_debug = 0; 526 527 static struct { 528 char *r_name; 529 int r_flag; 530 } esp__read_regnames [] = { 531 { "TCL", 0}, /* 0/00 */ 532 { "TCM", 0}, /* 1/04 */ 533 { "FIFO", 0}, /* 2/08 */ 534 { "CMD", 0}, /* 3/0c */ 535 { "STAT", 0}, /* 4/10 */ 536 { "INTR", 0}, /* 5/14 */ 537 { "STEP", 0}, /* 6/18 */ 538 { "FFLAGS", 1}, /* 7/1c */ 539 { "CFG1", 1}, /* 8/20 */ 540 { "STAT2", 0}, /* 9/24 */ 541 { "CFG4", 1}, /* a/28 */ 542 { "CFG2", 1}, /* b/2c */ 543 { "CFG3", 1}, /* c/30 */ 544 { "-none", 1}, /* d/34 */ 545 { "TCH", 1}, /* e/38 */ 546 { "TCX", 1}, /* f/3c */ 547 }; 548 549 static struct { 550 char *r_name; 551 int r_flag; 552 } esp__write_regnames[] = { 553 { "TCL", 1}, /* 0/00 */ 554 { "TCM", 1}, /* 1/04 */ 555 { "FIFO", 0}, /* 2/08 */ 556 { "CMD", 0}, /* 3/0c */ 557 { "SELID", 1}, /* 4/10 */ 558 { "TIMEOUT", 1}, /* 5/14 */ 559 { "SYNCTP", 1}, /* 6/18 */ 560 { "SYNCOFF", 1}, /* 7/1c */ 561 { "CFG1", 1}, /* 8/20 */ 562 { "CCF", 1}, /* 9/24 */ 563 { "TEST", 1}, /* a/28 */ 564 { "CFG2", 1}, /* b/2c */ 565 { "CFG3", 1}, /* c/30 */ 566 { "-none", 1}, /* d/34 */ 567 { "TCH", 1}, /* e/38 */ 568 { "TCX", 1}, /* f/3c */ 569 }; 570 #endif 571 572 u_char 573 esp_read_reg(struct ncr53c9x_softc *sc, int reg) 574 { 575 struct esp_softc *esc = (struct esp_softc *)sc; 576 u_char v; 577 578 v = bus_space_read_1(esc->sc_bustag, esc->sc_reg, reg * 4); 579 #ifdef ESP_SBUS_DEBUG 580 if (esp_sbus_debug && (reg < 0x10) && esp__read_regnames[reg].r_flag) 581 printf("RD:%x <%s> %x\n", reg * 4, 582 ((unsigned)reg < 0x10) ? esp__read_regnames[reg].r_name : "<***>", v); 583 #endif 584 return v; 585 } 586 587 void 588 esp_write_reg(struct ncr53c9x_softc *sc, int reg, u_char v) 589 { 590 struct esp_softc *esc = (struct esp_softc *)sc; 591 592 #ifdef ESP_SBUS_DEBUG 593 if (esp_sbus_debug && (reg < 0x10) && esp__write_regnames[reg].r_flag) 594 printf("WR:%x <%s> %x\n", reg * 4, 595 ((unsigned)reg < 0x10) ? esp__write_regnames[reg].r_name : "<***>", v); 596 #endif 597 bus_space_write_1(esc->sc_bustag, esc->sc_reg, reg * 4, v); 598 } 599 600 u_char 601 esp_rdreg1(struct ncr53c9x_softc *sc, int reg) 602 { 603 struct esp_softc *esc = (struct esp_softc *)sc; 604 605 return (bus_space_read_1(esc->sc_bustag, esc->sc_reg, reg)); 606 } 607 608 void 609 esp_wrreg1(struct ncr53c9x_softc *sc, int reg, u_char v) 610 { 611 struct esp_softc *esc = (struct esp_softc *)sc; 612 613 bus_space_write_1(esc->sc_bustag, esc->sc_reg, reg, v); 614 } 615 616 int 617 esp_dma_isintr(struct ncr53c9x_softc *sc) 618 { 619 struct esp_softc *esc = (struct esp_softc *)sc; 620 621 return (DMA_ISINTR(esc->sc_dma)); 622 } 623 624 void 625 esp_dma_reset(struct ncr53c9x_softc *sc) 626 { 627 struct esp_softc *esc = (struct esp_softc *)sc; 628 629 DMA_RESET(esc->sc_dma); 630 } 631 632 int 633 esp_dma_intr(struct ncr53c9x_softc *sc) 634 { 635 struct esp_softc *esc = (struct esp_softc *)sc; 636 637 return (DMA_INTR(esc->sc_dma)); 638 } 639 640 int 641 esp_dma_setup(struct ncr53c9x_softc *sc, caddr_t *addr, size_t *len, 642 int datain, size_t *dmasize) 643 { 644 struct esp_softc *esc = (struct esp_softc *)sc; 645 646 return (DMA_SETUP(esc->sc_dma, addr, len, datain, dmasize)); 647 } 648 649 void 650 esp_dma_go(struct ncr53c9x_softc *sc) 651 { 652 struct esp_softc *esc = (struct esp_softc *)sc; 653 654 DMA_GO(esc->sc_dma); 655 } 656 657 void 658 esp_dma_stop(struct ncr53c9x_softc *sc) 659 { 660 struct esp_softc *esc = (struct esp_softc *)sc; 661 u_int32_t csr; 662 663 csr = L64854_GCSR(esc->sc_dma); 664 csr &= ~D_EN_DMA; 665 L64854_SCSR(esc->sc_dma, csr); 666 } 667 668 int 669 esp_dma_isactive(struct ncr53c9x_softc *sc) 670 { 671 struct esp_softc *esc = (struct esp_softc *)sc; 672 673 return (DMA_ISACTIVE(esc->sc_dma)); 674 } 675 676 #if defined(DDB) && defined(notyet) 677 #include <machine/db_machdep.h> 678 #include <ddb/db_output.h> 679 680 void db_esp(db_expr_t, int, db_expr_t, char *); 681 682 void 683 db_esp(db_expr_t addr, int have_addr, db_expr_t count, char *modif) 684 { 685 struct ncr53c9x_softc *sc; 686 struct ncr53c9x_ecb *ecb; 687 struct ncr53c9x_linfo *li; 688 int u, t, i; 689 690 for (u=0; u<10; u++) { 691 sc = (struct ncr53c9x_softc *) 692 getdevunit("esp", u); 693 if (!sc) continue; 694 695 db_printf("esp%d: nexus %p phase %x prev %x dp %p dleft %lx ify %x\n", 696 u, sc->sc_nexus, sc->sc_phase, sc->sc_prevphase, 697 sc->sc_dp, sc->sc_dleft, sc->sc_msgify); 698 db_printf("\tmsgout %x msgpriq %x msgin %x:%x:%x:%x:%x\n", 699 sc->sc_msgout, sc->sc_msgpriq, sc->sc_imess[0], 700 sc->sc_imess[1], sc->sc_imess[2], sc->sc_imess[3], 701 sc->sc_imess[0]); 702 db_printf("ready: "); 703 TAILQ_FOREACH(ecb, &sc->ready_list, chain) { 704 db_printf("ecb %p ", ecb); 705 if (ecb == TAILQ_NEXT(ecb, chain)) { 706 db_printf("\nWARNING: tailq loop on ecb %p", ecb); 707 break; 708 } 709 } 710 db_printf("\n"); 711 712 for (t=0; t<NCR_NTARG; t++) { 713 LIST_FOREACH(li, &sc->sc_tinfo[t].luns, link) { 714 db_printf("t%d lun %d untagged %p busy %d used %x\n", 715 t, (int)li->lun, li->untagged, li->busy, 716 li->used); 717 for (i=0; i<256; i++) 718 if ((ecb = li->queued[i])) { 719 db_printf("ecb %p tag %x\n", ecb, i); 720 } 721 } 722 } 723 } 724 } 725 #endif 726 727