isp_sbus.c revision 1.14.2.4
1 /* $NetBSD: isp_sbus.c,v 1.14.2.4 2001/03/12 13:31:23 bouyer Exp $ */ 2 /* 3 * This driver, which is contained in NetBSD in the files: 4 * 5 * sys/dev/ic/isp.c 6 * sys/dev/ic/isp_inline.h 7 * sys/dev/ic/isp_netbsd.c 8 * sys/dev/ic/isp_netbsd.h 9 * sys/dev/ic/isp_target.c 10 * sys/dev/ic/isp_target.h 11 * sys/dev/ic/isp_tpublic.h 12 * sys/dev/ic/ispmbox.h 13 * sys/dev/ic/ispreg.h 14 * sys/dev/ic/ispvar.h 15 * sys/microcode/isp/asm_sbus.h 16 * sys/microcode/isp/asm_1040.h 17 * sys/microcode/isp/asm_1080.h 18 * sys/microcode/isp/asm_12160.h 19 * sys/microcode/isp/asm_2100.h 20 * sys/microcode/isp/asm_2200.h 21 * sys/pci/isp_pci.c 22 * sys/sbus/isp_sbus.c 23 * 24 * Is being actively maintained by Matthew Jacob (mjacob (at) netbsd.org). 25 * This driver also is shared source with FreeBSD, OpenBSD, Linux, Solaris, 26 * Linux versions. This tends to be an interesting maintenance problem. 27 * 28 * Please coordinate with Matthew Jacob on changes you wish to make here. 29 */ 30 /* 31 * SBus specific probe and attach routines for Qlogic ISP SCSI adapters. 32 * 33 * Copyright (c) 1997, 2001 by Matthew Jacob 34 * NASA AMES Research Center 35 * All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice immediately at the beginning of the file, without modification, 42 * 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 * 47 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 48 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 49 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 50 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 51 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 52 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 53 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 54 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 55 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 56 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 57 * SUCH DAMAGE. 58 * 59 */ 60 61 #include <sys/param.h> 62 #include <sys/systm.h> 63 #include <sys/device.h> 64 #include <sys/kernel.h> 65 #include <sys/malloc.h> 66 #include <sys/queue.h> 67 68 #include <machine/bus.h> 69 #include <machine/intr.h> 70 #include <machine/autoconf.h> 71 72 #include <dev/ic/isp_netbsd.h> 73 #include <dev/microcode/isp/asm_sbus.h> 74 #include <dev/sbus/sbusvar.h> 75 #include <sys/reboot.h> 76 77 /* 78 * Gross! But there's no way around this until sparc64 iommu.c is fixed. 79 */ 80 #if _MACHINE == sparc64 81 #define LMAP_FLAGS BUS_DMA_NOWAIT|BUS_DMA_COHERENT 82 #else 83 #define LMAP_FLAGS BUS_DMA_NOWAIT 84 #endif 85 86 static int isp_sbus_intr __P((void *)); 87 static u_int16_t isp_sbus_rd_reg __P((struct ispsoftc *, int)); 88 static void isp_sbus_wr_reg __P((struct ispsoftc *, int, u_int16_t)); 89 static int isp_sbus_mbxdma __P((struct ispsoftc *)); 90 static int isp_sbus_dmasetup __P((struct ispsoftc *, struct scsipi_xfer *, 91 ispreq_t *, u_int16_t *, u_int16_t)); 92 static void isp_sbus_dmateardown __P((struct ispsoftc *, struct scsipi_xfer *, 93 u_int32_t)); 94 95 #ifndef ISP_1000_RISC_CODE 96 #define ISP_1000_RISC_CODE NULL 97 #endif 98 99 static struct ispmdvec mdvec = { 100 isp_sbus_rd_reg, 101 isp_sbus_wr_reg, 102 isp_sbus_mbxdma, 103 isp_sbus_dmasetup, 104 isp_sbus_dmateardown, 105 NULL, 106 NULL, 107 NULL, 108 ISP_1000_RISC_CODE 109 }; 110 111 struct isp_sbussoftc { 112 struct ispsoftc sbus_isp; 113 struct sbusdev sbus_sd; 114 sdparam sbus_dev; 115 bus_space_tag_t sbus_bustag; 116 bus_dma_tag_t sbus_dmatag; 117 bus_space_handle_t sbus_reg; 118 int sbus_node; 119 int sbus_pri; 120 struct ispmdvec sbus_mdvec; 121 bus_dmamap_t *sbus_dmamap; 122 bus_dmamap_t sbus_rquest_dmamap; 123 bus_dmamap_t sbus_result_dmamap; 124 int16_t sbus_poff[_NREG_BLKS]; 125 }; 126 127 128 static int isp_match __P((struct device *, struct cfdata *, void *)); 129 static void isp_sbus_attach __P((struct device *, struct device *, void *)); 130 struct cfattach isp_sbus_ca = { 131 sizeof (struct isp_sbussoftc), isp_match, isp_sbus_attach 132 }; 133 134 static int 135 isp_match(parent, cf, aux) 136 struct device *parent; 137 struct cfdata *cf; 138 void *aux; 139 { 140 int rv; 141 #ifdef DEBUG 142 static int oneshot = 1; 143 #endif 144 struct sbus_attach_args *sa = aux; 145 146 rv = (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0 || 147 strcmp("PTI,ptisp", sa->sa_name) == 0 || 148 strcmp("ptisp", sa->sa_name) == 0 || 149 strcmp("SUNW,isp", sa->sa_name) == 0 || 150 strcmp("QLGC,isp", sa->sa_name) == 0); 151 #ifdef DEBUG 152 if (rv && oneshot) { 153 oneshot = 0; 154 printf("Qlogic ISP Driver, NetBSD (sbus) Platform Version " 155 "%d.%d Core Version %d.%d\n", 156 ISP_PLATFORM_VERSION_MAJOR, ISP_PLATFORM_VERSION_MINOR, 157 ISP_CORE_VERSION_MAJOR, ISP_CORE_VERSION_MINOR); 158 } 159 #endif 160 return (rv); 161 } 162 163 164 static void 165 isp_sbus_attach(parent, self, aux) 166 struct device *parent, *self; 167 void *aux; 168 { 169 int freq, ispburst, sbusburst; 170 struct sbus_attach_args *sa = aux; 171 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) self; 172 struct ispsoftc *isp = &sbc->sbus_isp; 173 174 printf(" for %s\n", sa->sa_name); 175 176 sbc->sbus_bustag = sa->sa_bustag; 177 sbc->sbus_dmatag = sa->sa_dmatag; 178 if (sa->sa_nintr != 0) 179 sbc->sbus_pri = sa->sa_pri; 180 sbc->sbus_mdvec = mdvec; 181 182 if (sa->sa_npromvaddrs != 0) { 183 sbc->sbus_reg = (bus_space_handle_t)sa->sa_promvaddrs[0]; 184 } else { 185 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, sa->sa_offset, 186 sa->sa_size, BUS_SPACE_MAP_LINEAR, 0, 187 &sbc->sbus_reg) != 0) { 188 printf("%s: cannot map registers\n", self->dv_xname); 189 return; 190 } 191 } 192 sbc->sbus_node = sa->sa_node; 193 194 freq = getpropint(sa->sa_node, "clock-frequency", 0); 195 if (freq) { 196 /* 197 * Convert from HZ to MHz, rounding up. 198 */ 199 freq = (freq + 500000)/1000000; 200 #if 0 201 printf("%s: %d MHz\n", self->dv_xname, freq); 202 #endif 203 } 204 sbc->sbus_mdvec.dv_clock = freq; 205 206 /* 207 * Now figure out what the proper burst sizes, etc., to use. 208 * Unfortunately, there is no ddi_dma_burstsizes here which 209 * walks up the tree finding the limiting burst size node (if 210 * any). 211 */ 212 sbusburst = ((struct sbus_softc *)parent)->sc_burst; 213 if (sbusburst == 0) 214 sbusburst = SBUS_BURST_32 - 1; 215 ispburst = getpropint(sa->sa_node, "burst-sizes", -1); 216 if (ispburst == -1) { 217 ispburst = sbusburst; 218 } 219 ispburst &= sbusburst; 220 ispburst &= ~(1 << 7); 221 ispburst &= ~(1 << 6); 222 sbc->sbus_mdvec.dv_conf1 = 0; 223 if (ispburst & (1 << 5)) { 224 sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_32; 225 } else if (ispburst & (1 << 4)) { 226 sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_16; 227 } else if (ispburst & (1 << 3)) { 228 sbc->sbus_mdvec.dv_conf1 = 229 BIU_SBUS_CONF1_BURST8 | BIU_SBUS_CONF1_FIFO_8; 230 } 231 if (sbc->sbus_mdvec.dv_conf1) { 232 sbc->sbus_mdvec.dv_conf1 |= BIU_BURST_ENABLE; 233 } 234 235 /* 236 * Some early versions of the PTI SBus adapter 237 * would fail in trying to download (via poking) 238 * FW. We give up on them. 239 */ 240 if (strcmp("PTI,ptisp", sa->sa_name) == 0 || 241 strcmp("ptisp", sa->sa_name) == 0) { 242 sbc->sbus_mdvec.dv_ispfw = NULL; 243 } 244 245 isp->isp_mdvec = &sbc->sbus_mdvec; 246 isp->isp_bustype = ISP_BT_SBUS; 247 isp->isp_type = ISP_HA_SCSI_UNKNOWN; 248 isp->isp_param = &sbc->sbus_dev; 249 bzero(isp->isp_param, sizeof (sdparam)); 250 251 sbc->sbus_poff[BIU_BLOCK >> _BLK_REG_SHFT] = BIU_REGS_OFF; 252 sbc->sbus_poff[MBOX_BLOCK >> _BLK_REG_SHFT] = SBUS_MBOX_REGS_OFF; 253 sbc->sbus_poff[SXP_BLOCK >> _BLK_REG_SHFT] = SBUS_SXP_REGS_OFF; 254 sbc->sbus_poff[RISC_BLOCK >> _BLK_REG_SHFT] = SBUS_RISC_REGS_OFF; 255 sbc->sbus_poff[DMA_BLOCK >> _BLK_REG_SHFT] = DMA_REGS_OFF; 256 257 /* Establish interrupt channel */ 258 bus_intr_establish(sbc->sbus_bustag, sbc->sbus_pri, IPL_BIO, 0, 259 isp_sbus_intr, sbc); 260 sbus_establish(&sbc->sbus_sd, &sbc->sbus_isp.isp_osinfo._dev); 261 262 /* 263 * Set up logging levels. 264 */ 265 #ifdef ISP_LOGDEFAULT 266 isp->isp_dblev = ISP_LOGDEFAULT; 267 #else 268 isp->isp_dblev = ISP_LOGWARN|ISP_LOGERR; 269 if (bootverbose) 270 isp->isp_dblev |= ISP_LOGCONFIG|ISP_LOGINFO; 271 #ifdef SCSIDEBUG 272 isp->isp_dblev |= ISP_LOGDEBUG1|ISP_LOGDEBUG2; 273 #endif 274 #ifdef DEBUG 275 isp->isp_dblev |= ISP_LOGDEBUG0; 276 #endif 277 #endif 278 279 isp->isp_confopts = self->dv_cfdata->cf_flags; 280 isp->isp_role = ISP_DEFAULT_ROLES; 281 282 /* 283 * There's no tool on sparc to set NVRAM for ISPs, so ignore it. 284 */ 285 isp->isp_confopts |= ISP_CFG_NONVRAM; 286 ISP_LOCK(isp); 287 isp->isp_osinfo.no_mbox_ints = 1; 288 isp_reset(isp); 289 if (isp->isp_state != ISP_RESETSTATE) { 290 ISP_UNLOCK(isp); 291 return; 292 } 293 ENABLE_INTS(isp); 294 isp_init(isp); 295 if (isp->isp_state != ISP_INITSTATE) { 296 isp_uninit(isp); 297 ISP_UNLOCK(isp); 298 return; 299 } 300 301 /* 302 * do generic attach. 303 */ 304 ISP_UNLOCK(isp); 305 isp_attach(isp); 306 if (isp->isp_state != ISP_RUNSTATE) { 307 ISP_LOCK(isp); 308 isp_uninit(isp); 309 ISP_UNLOCK(isp); 310 } 311 } 312 313 static int 314 isp_sbus_intr(arg) 315 void *arg; 316 { 317 int rv; 318 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *)arg; 319 bus_dmamap_sync(sbc->sbus_dmatag, sbc->sbus_result_dmamap, 0, 320 sbc->sbus_result_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD); 321 sbc->sbus_isp.isp_osinfo.onintstack = 1; 322 rv = isp_intr(arg); 323 sbc->sbus_isp.isp_osinfo.onintstack = 0; 324 return (rv); 325 } 326 327 static u_int16_t 328 isp_sbus_rd_reg(isp, regoff) 329 struct ispsoftc *isp; 330 int regoff; 331 { 332 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 333 int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 334 offset += (regoff & 0xff); 335 return (bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, offset)); 336 } 337 338 static void 339 isp_sbus_wr_reg(isp, regoff, val) 340 struct ispsoftc *isp; 341 int regoff; 342 u_int16_t val; 343 { 344 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 345 int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 346 offset += (regoff & 0xff); 347 bus_space_write_2(sbc->sbus_bustag, sbc->sbus_reg, offset, val); 348 } 349 350 static int 351 isp_sbus_mbxdma(isp) 352 struct ispsoftc *isp; 353 { 354 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 355 bus_dma_tag_t dmatag = sbc->sbus_dmatag; 356 bus_dma_segment_t reqseg, rspseg; 357 int reqrs, rsprs, i, progress; 358 size_t n; 359 bus_size_t len; 360 361 if (isp->isp_rquest_dma) 362 return (0); 363 364 n = sizeof (XS_T **) * isp->isp_maxcmds; 365 isp->isp_xflist = (XS_T **) malloc(n, M_DEVBUF, M_WAITOK); 366 if (isp->isp_xflist == NULL) { 367 isp_prt(isp, ISP_LOGERR, "cannot alloc xflist array"); 368 return (1); 369 } 370 bzero(isp->isp_xflist, n); 371 n = sizeof (bus_dmamap_t) * isp->isp_maxcmds; 372 sbc->sbus_dmamap = (bus_dmamap_t *) malloc(n, M_DEVBUF, M_WAITOK); 373 if (sbc->sbus_dmamap == NULL) { 374 free(isp->isp_xflist, M_DEVBUF); 375 isp->isp_xflist = NULL; 376 isp_prt(isp, ISP_LOGERR, "cannot alloc dmamap array"); 377 return (1); 378 } 379 for (i = 0; i < isp->isp_maxcmds; i++) { 380 /* Allocate a DMA handle */ 381 if (bus_dmamap_create(dmatag, MAXPHYS, 1, MAXPHYS, 0, 382 BUS_DMA_NOWAIT, &sbc->sbus_dmamap[i]) != 0) { 383 isp_prt(isp, ISP_LOGERR, "cmd DMA maps create error"); 384 break; 385 } 386 } 387 if (i < isp->isp_maxcmds) { 388 while (--i >= 0) { 389 bus_dmamap_destroy(dmatag, sbc->sbus_dmamap[i]); 390 } 391 free(isp->isp_xflist, M_DEVBUF); 392 free(sbc->sbus_dmamap, M_DEVBUF); 393 isp->isp_xflist = NULL; 394 sbc->sbus_dmamap = NULL; 395 return (1); 396 } 397 398 /* 399 * Allocate and map the request and response queues 400 */ 401 progress = 0; 402 len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); 403 if (bus_dmamap_create(dmatag, len, 1, len, 0, BUS_DMA_NOWAIT, 404 &sbc->sbus_rquest_dmamap) != 0) { 405 goto dmafail; 406 } 407 progress++; 408 if (bus_dmamem_alloc(dmatag, len, 0, 0, &reqseg, 1, &reqrs, 409 BUS_DMA_NOWAIT)) { 410 goto dmafail; 411 } 412 isp->isp_rquest_dma = sbc->sbus_rquest_dmamap->dm_segs[0].ds_addr; 413 progress++; 414 if (bus_dmamem_map(dmatag, &reqseg, reqrs, len, 415 (caddr_t *)&isp->isp_rquest, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 416 goto dmafail; 417 } 418 progress++; 419 if (bus_dmamap_load(dmatag, sbc->sbus_rquest_dmamap, 420 isp->isp_rquest, len, NULL, LMAP_FLAGS) != 0) { 421 goto dmafail; 422 } 423 progress++; 424 425 len = ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp)); 426 if (bus_dmamap_create(dmatag, len, 1, len, 0, BUS_DMA_NOWAIT, 427 &sbc->sbus_result_dmamap) != 0) { 428 goto dmafail; 429 } 430 progress++; 431 if (bus_dmamem_alloc(dmatag, len, 0, 0, &rspseg, 1, &rsprs, 432 BUS_DMA_NOWAIT)) { 433 goto dmafail; 434 } 435 isp->isp_result_dma = sbc->sbus_result_dmamap->dm_segs[0].ds_addr; 436 progress++; 437 if (bus_dmamem_map(dmatag, &rspseg, rsprs, len, 438 (caddr_t *)&isp->isp_result, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 439 goto dmafail; 440 } 441 progress++; 442 if (bus_dmamap_load(dmatag, sbc->sbus_result_dmamap, 443 isp->isp_result, len, NULL, LMAP_FLAGS) != 0) { 444 goto dmafail; 445 } 446 progress++; 447 return (0); 448 449 dmafail: 450 isp_prt(isp, ISP_LOGERR, "Mailbox DMA Setup Failure"); 451 452 if (progress >= 8) { 453 bus_dmamap_unload(dmatag, sbc->sbus_result_dmamap); 454 } 455 if (progress >= 7) { 456 bus_dmamem_unmap(dmatag, 457 isp->isp_result, ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp))); 458 } 459 if (progress >= 6) { 460 bus_dmamem_free(dmatag, &rspseg, rsprs); 461 } 462 if (progress >= 5) { 463 bus_dmamap_destroy(dmatag, sbc->sbus_result_dmamap); 464 } 465 466 if (progress >= 4) { 467 bus_dmamap_unload(dmatag, sbc->sbus_rquest_dmamap); 468 } 469 if (progress >= 3) { 470 bus_dmamem_unmap(dmatag, 471 isp->isp_rquest, ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp))); 472 473 } 474 if (progress >= 2) { 475 bus_dmamem_free(dmatag, &reqseg, reqrs); 476 } 477 if (progress >= 1) { 478 bus_dmamap_destroy(dmatag, sbc->sbus_rquest_dmamap); 479 } 480 481 for (i = 0; i < isp->isp_maxcmds; i++) { 482 bus_dmamap_destroy(dmatag, sbc->sbus_dmamap[i]); 483 } 484 free(sbc->sbus_dmamap, M_DEVBUF); 485 free(isp->isp_xflist, M_DEVBUF); 486 isp->isp_xflist = NULL; 487 sbc->sbus_dmamap = NULL; 488 return (1); 489 } 490 491 /* 492 * Map a DMA request. 493 * We're guaranteed that rq->req_handle is a value from 1 to isp->isp_maxcmds. 494 */ 495 496 static int 497 isp_sbus_dmasetup(isp, xs, rq, iptrp, optr) 498 struct ispsoftc *isp; 499 struct scsipi_xfer *xs; 500 ispreq_t *rq; 501 u_int16_t *iptrp; 502 u_int16_t optr; 503 { 504 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 505 bus_dmamap_t dmap; 506 ispcontreq_t *crq; 507 int cansleep = (xs->xs_control & XS_CTL_NOSLEEP) == 0; 508 int in = (xs->xs_control & XS_CTL_DATA_IN) != 0; 509 510 if (xs->datalen == 0) { 511 rq->req_seg_count = 1; 512 goto mbxsync; 513 } 514 515 dmap = sbc->sbus_dmamap[isp_handle_index(rq->req_handle)]; 516 if (dmap->dm_nsegs != 0) { 517 panic("%s: dma map already allocated\n", isp->isp_name); 518 /* NOTREACHED */ 519 } 520 if (bus_dmamap_load(sbc->sbus_dmatag, dmap, xs->data, xs->datalen, 521 NULL, (cansleep ? BUS_DMA_WAITOK : BUS_DMA_NOWAIT) | 522 BUS_DMA_STREAMING) != 0) { 523 XS_SETERR(xs, HBA_BOTCH); 524 return (CMD_COMPLETE); 525 } 526 527 bus_dmamap_sync(sbc->sbus_dmatag, dmap, 0, xs->datalen, 528 in? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 529 530 if (in) { 531 rq->req_flags |= REQFLAG_DATA_IN; 532 } else { 533 rq->req_flags |= REQFLAG_DATA_OUT; 534 } 535 536 if (XS_CDBLEN(xs) > 12) { 537 crq = (ispcontreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, *iptrp); 538 *iptrp = ISP_NXT_QENTRY(*iptrp, RQUEST_QUEUE_LEN(isp)); 539 if (*iptrp == optr) { 540 isp_prt(isp, ISP_LOGDEBUG0, "Request Queue Overflow++"); 541 bus_dmamap_unload(sbc->sbus_dmatag, dmap); 542 XS_SETERR(xs, HBA_BOTCH); 543 return (CMD_EAGAIN); 544 } 545 rq->req_seg_count = 2; 546 rq->req_dataseg[0].ds_count = 0; 547 rq->req_dataseg[0].ds_base = 0; 548 bzero((void *)crq, sizeof (*crq)); 549 crq->req_header.rqs_entry_count = 1; 550 crq->req_header.rqs_entry_type = RQSTYPE_DATASEG; 551 crq->req_dataseg[0].ds_count = xs->datalen; 552 crq->req_dataseg[0].ds_base = dmap->dm_segs[0].ds_addr; 553 ISP_SBUSIFY_ISPHDR(isp, &crq->req_header) 554 } else { 555 rq->req_dataseg[0].ds_count = xs->datalen; 556 rq->req_dataseg[0].ds_base = dmap->dm_segs[0].ds_addr; 557 rq->req_seg_count = 1; 558 } 559 560 mbxsync: 561 ISP_SWIZZLE_REQUEST(isp, rq); 562 bus_dmamap_sync(sbc->sbus_dmatag, sbc->sbus_rquest_dmamap, 0, 563 sbc->sbus_rquest_dmamap->dm_mapsize, BUS_DMASYNC_PREWRITE); 564 return (CMD_QUEUED); 565 } 566 567 static void 568 isp_sbus_dmateardown(isp, xs, handle) 569 struct ispsoftc *isp; 570 struct scsipi_xfer *xs; 571 u_int32_t handle; 572 { 573 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 574 bus_dmamap_t dmap; 575 576 dmap = sbc->sbus_dmamap[isp_handle_index(handle)]; 577 578 if (dmap->dm_nsegs == 0) { 579 panic("%s: dma map not already allocated\n", isp->isp_name); 580 /* NOTREACHED */ 581 } 582 bus_dmamap_sync(sbc->sbus_dmatag, dmap, 0, 583 xs->datalen, (xs->xs_control & XS_CTL_DATA_IN)? 584 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 585 bus_dmamap_unload(sbc->sbus_dmatag, dmap); 586 } 587
Indexes created Wed Oct 22 13:09:56 GMT 2025