isp_sbus.c revision 1.40
1 /* $NetBSD: isp_sbus.c,v 1.40 2001/02/28 05:46:46 mjacob 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 either bus_dma is corrected 79 * or sparc64 iommu.c is fixed. 80 */ 81 #if _MACHINE == sparc64 82 #define LMAP_FLAGS BUS_DMA_NOWAIT|BUS_DMA_COHERENT 83 #else 84 #define LMAP_FLAGS BUS_DMA_NOWAIT 85 #endif 86 87 static int isp_sbus_intr __P((void *)); 88 static u_int16_t isp_sbus_rd_reg __P((struct ispsoftc *, int)); 89 static void isp_sbus_wr_reg __P((struct ispsoftc *, int, u_int16_t)); 90 static int isp_sbus_mbxdma __P((struct ispsoftc *)); 91 static int isp_sbus_dmasetup __P((struct ispsoftc *, struct scsipi_xfer *, 92 ispreq_t *, u_int16_t *, u_int16_t)); 93 static void isp_sbus_dmateardown __P((struct ispsoftc *, struct scsipi_xfer *, 94 u_int32_t)); 95 96 #ifndef ISP_1000_RISC_CODE 97 #define ISP_1000_RISC_CODE NULL 98 #endif 99 100 static struct ispmdvec mdvec = { 101 isp_sbus_rd_reg, 102 isp_sbus_wr_reg, 103 isp_sbus_mbxdma, 104 isp_sbus_dmasetup, 105 isp_sbus_dmateardown, 106 NULL, 107 NULL, 108 NULL, 109 ISP_1000_RISC_CODE 110 }; 111 112 struct isp_sbussoftc { 113 struct ispsoftc sbus_isp; 114 struct sbusdev sbus_sd; 115 sdparam sbus_dev; 116 bus_space_tag_t sbus_bustag; 117 bus_dma_tag_t sbus_dmatag; 118 bus_space_handle_t sbus_reg; 119 int sbus_node; 120 int sbus_pri; 121 struct ispmdvec sbus_mdvec; 122 bus_dmamap_t *sbus_dmamap; 123 bus_dmamap_t sbus_rquest_dmamap; 124 bus_dmamap_t sbus_result_dmamap; 125 int16_t sbus_poff[_NREG_BLKS]; 126 }; 127 128 129 static int isp_match __P((struct device *, struct cfdata *, void *)); 130 static void isp_sbus_attach __P((struct device *, struct device *, void *)); 131 struct cfattach isp_sbus_ca = { 132 sizeof (struct isp_sbussoftc), isp_match, isp_sbus_attach 133 }; 134 135 static int 136 isp_match(parent, cf, aux) 137 struct device *parent; 138 struct cfdata *cf; 139 void *aux; 140 { 141 int rv; 142 #ifdef DEBUG 143 static int oneshot = 1; 144 #endif 145 struct sbus_attach_args *sa = aux; 146 147 rv = (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0 || 148 strcmp("PTI,ptisp", sa->sa_name) == 0 || 149 strcmp("ptisp", sa->sa_name) == 0 || 150 strcmp("SUNW,isp", sa->sa_name) == 0 || 151 strcmp("QLGC,isp", sa->sa_name) == 0); 152 #ifdef DEBUG 153 if (rv && oneshot) { 154 oneshot = 0; 155 printf("Qlogic ISP Driver, NetBSD (sbus) Platform Version " 156 "%d.%d Core Version %d.%d\n", 157 ISP_PLATFORM_VERSION_MAJOR, ISP_PLATFORM_VERSION_MINOR, 158 ISP_CORE_VERSION_MAJOR, ISP_CORE_VERSION_MINOR); 159 } 160 #endif 161 return (rv); 162 } 163 164 165 static void 166 isp_sbus_attach(parent, self, aux) 167 struct device *parent, *self; 168 void *aux; 169 { 170 int freq, ispburst, sbusburst; 171 struct sbus_attach_args *sa = aux; 172 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) self; 173 struct ispsoftc *isp = &sbc->sbus_isp; 174 175 printf(" for %s\n", sa->sa_name); 176 177 sbc->sbus_bustag = sa->sa_bustag; 178 sbc->sbus_dmatag = sa->sa_dmatag; 179 if (sa->sa_nintr != 0) 180 sbc->sbus_pri = sa->sa_pri; 181 sbc->sbus_mdvec = mdvec; 182 183 if (sa->sa_npromvaddrs != 0) { 184 sbc->sbus_reg = (bus_space_handle_t)sa->sa_promvaddrs[0]; 185 } else { 186 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, sa->sa_offset, 187 sa->sa_size, BUS_SPACE_MAP_LINEAR, 0, 188 &sbc->sbus_reg) != 0) { 189 printf("%s: cannot map registers\n", self->dv_xname); 190 return; 191 } 192 } 193 sbc->sbus_node = sa->sa_node; 194 195 freq = getpropint(sa->sa_node, "clock-frequency", 0); 196 if (freq) { 197 /* 198 * Convert from HZ to MHz, rounding up. 199 */ 200 freq = (freq + 500000)/1000000; 201 #if 0 202 printf("%s: %d MHz\n", self->dv_xname, freq); 203 #endif 204 } 205 sbc->sbus_mdvec.dv_clock = freq; 206 207 /* 208 * Now figure out what the proper burst sizes, etc., to use. 209 * Unfortunately, there is no ddi_dma_burstsizes here which 210 * walks up the tree finding the limiting burst size node (if 211 * any). 212 */ 213 sbusburst = ((struct sbus_softc *)parent)->sc_burst; 214 if (sbusburst == 0) 215 sbusburst = SBUS_BURST_32 - 1; 216 ispburst = getpropint(sa->sa_node, "burst-sizes", -1); 217 if (ispburst == -1) { 218 ispburst = sbusburst; 219 } 220 ispburst &= sbusburst; 221 ispburst &= ~(1 << 7); 222 ispburst &= ~(1 << 6); 223 sbc->sbus_mdvec.dv_conf1 = 0; 224 if (ispburst & (1 << 5)) { 225 sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_32; 226 } else if (ispburst & (1 << 4)) { 227 sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_16; 228 } else if (ispburst & (1 << 3)) { 229 sbc->sbus_mdvec.dv_conf1 = 230 BIU_SBUS_CONF1_BURST8 | BIU_SBUS_CONF1_FIFO_8; 231 } 232 if (sbc->sbus_mdvec.dv_conf1) { 233 sbc->sbus_mdvec.dv_conf1 |= BIU_BURST_ENABLE; 234 } 235 236 /* 237 * Some early versions of the PTI SBus adapter 238 * would fail in trying to download (via poking) 239 * FW. We give up on them. 240 */ 241 if (strcmp("PTI,ptisp", sa->sa_name) == 0 || 242 strcmp("ptisp", sa->sa_name) == 0) { 243 sbc->sbus_mdvec.dv_ispfw = NULL; 244 } 245 246 isp->isp_mdvec = &sbc->sbus_mdvec; 247 isp->isp_bustype = ISP_BT_SBUS; 248 isp->isp_type = ISP_HA_SCSI_UNKNOWN; 249 isp->isp_param = &sbc->sbus_dev; 250 bzero(isp->isp_param, sizeof (sdparam)); 251 252 sbc->sbus_poff[BIU_BLOCK >> _BLK_REG_SHFT] = BIU_REGS_OFF; 253 sbc->sbus_poff[MBOX_BLOCK >> _BLK_REG_SHFT] = SBUS_MBOX_REGS_OFF; 254 sbc->sbus_poff[SXP_BLOCK >> _BLK_REG_SHFT] = SBUS_SXP_REGS_OFF; 255 sbc->sbus_poff[RISC_BLOCK >> _BLK_REG_SHFT] = SBUS_RISC_REGS_OFF; 256 sbc->sbus_poff[DMA_BLOCK >> _BLK_REG_SHFT] = DMA_REGS_OFF; 257 258 /* Establish interrupt channel */ 259 bus_intr_establish(sbc->sbus_bustag, sbc->sbus_pri, IPL_BIO, 0, 260 isp_sbus_intr, sbc); 261 sbus_establish(&sbc->sbus_sd, &sbc->sbus_isp.isp_osinfo._dev); 262 263 /* 264 * Set up logging levels. 265 */ 266 #ifdef ISP_LOGDEFAULT 267 isp->isp_dblev = ISP_LOGDEFAULT; 268 #else 269 isp->isp_dblev = ISP_LOGWARN|ISP_LOGERR; 270 if (bootverbose) 271 isp->isp_dblev |= ISP_LOGCONFIG|ISP_LOGINFO; 272 #ifdef SCSIDEBUG 273 isp->isp_dblev |= ISP_LOGDEBUG1|ISP_LOGDEBUG2; 274 #endif 275 #ifdef DEBUG 276 isp->isp_dblev |= ISP_LOGDEBUG0; 277 #endif 278 #endif 279 280 isp->isp_confopts = self->dv_cfdata->cf_flags; 281 isp->isp_role = ISP_DEFAULT_ROLES; 282 283 /* 284 * There's no tool on sparc to set NVRAM for ISPs, so ignore it. 285 */ 286 isp->isp_confopts |= ISP_CFG_NONVRAM; 287 ISP_LOCK(isp); 288 isp->isp_osinfo.no_mbox_ints = 1; 289 isp_reset(isp); 290 if (isp->isp_state != ISP_RESETSTATE) { 291 ISP_UNLOCK(isp); 292 return; 293 } 294 ENABLE_INTS(isp); 295 isp_init(isp); 296 if (isp->isp_state != ISP_INITSTATE) { 297 isp_uninit(isp); 298 ISP_UNLOCK(isp); 299 return; 300 } 301 302 /* 303 * do generic attach. 304 */ 305 ISP_UNLOCK(isp); 306 isp_attach(isp); 307 if (isp->isp_state != ISP_RUNSTATE) { 308 ISP_LOCK(isp); 309 isp_uninit(isp); 310 ISP_UNLOCK(isp); 311 } 312 } 313 314 static int 315 isp_sbus_intr(arg) 316 void *arg; 317 { 318 int rv; 319 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *)arg; 320 bus_dmamap_sync(sbc->sbus_dmatag, sbc->sbus_result_dmamap, 0, 321 sbc->sbus_result_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD); 322 sbc->sbus_isp.isp_osinfo.onintstack = 1; 323 rv = isp_intr(arg); 324 sbc->sbus_isp.isp_osinfo.onintstack = 0; 325 return (rv); 326 } 327 328 static u_int16_t 329 isp_sbus_rd_reg(isp, regoff) 330 struct ispsoftc *isp; 331 int regoff; 332 { 333 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 334 int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 335 offset += (regoff & 0xff); 336 return (bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, offset)); 337 } 338 339 static void 340 isp_sbus_wr_reg(isp, regoff, val) 341 struct ispsoftc *isp; 342 int regoff; 343 u_int16_t val; 344 { 345 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 346 int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 347 offset += (regoff & 0xff); 348 bus_space_write_2(sbc->sbus_bustag, sbc->sbus_reg, offset, val); 349 } 350 351 static int 352 isp_sbus_mbxdma(isp) 353 struct ispsoftc *isp; 354 { 355 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 356 bus_dma_tag_t dmatag = sbc->sbus_dmatag; 357 bus_dma_segment_t reqseg, rspseg; 358 int reqrs, rsprs, i, progress; 359 size_t n; 360 bus_size_t len; 361 362 if (isp->isp_rquest_dma) 363 return (0); 364 365 n = sizeof (XS_T **) * isp->isp_maxcmds; 366 isp->isp_xflist = (XS_T **) malloc(n, M_DEVBUF, M_WAITOK); 367 if (isp->isp_xflist == NULL) { 368 isp_prt(isp, ISP_LOGERR, "cannot alloc xflist array"); 369 return (1); 370 } 371 bzero(isp->isp_xflist, n); 372 n = sizeof (bus_dmamap_t) * isp->isp_maxcmds; 373 sbc->sbus_dmamap = (bus_dmamap_t *) malloc(n, M_DEVBUF, M_WAITOK); 374 if (sbc->sbus_dmamap == NULL) { 375 free(isp->isp_xflist, M_DEVBUF); 376 isp->isp_xflist = NULL; 377 isp_prt(isp, ISP_LOGERR, "cannot alloc dmamap array"); 378 return (1); 379 } 380 for (i = 0; i < isp->isp_maxcmds; i++) { 381 /* Allocate a DMA handle */ 382 if (bus_dmamap_create(dmatag, MAXPHYS, 1, MAXPHYS, 0, 383 BUS_DMA_NOWAIT, &sbc->sbus_dmamap[i]) != 0) { 384 isp_prt(isp, ISP_LOGERR, "cmd DMA maps create error"); 385 break; 386 } 387 } 388 if (i < isp->isp_maxcmds) { 389 while (--i >= 0) { 390 bus_dmamap_destroy(dmatag, sbc->sbus_dmamap[i]); 391 } 392 free(isp->isp_xflist, M_DEVBUF); 393 free(sbc->sbus_dmamap, M_DEVBUF); 394 isp->isp_xflist = NULL; 395 sbc->sbus_dmamap = NULL; 396 return (1); 397 } 398 399 /* 400 * Allocate and map the request and response queues 401 */ 402 progress = 0; 403 len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); 404 if (bus_dmamap_create(dmatag, len, 1, len, 0, BUS_DMA_NOWAIT, 405 &sbc->sbus_rquest_dmamap) != 0) { 406 goto dmafail; 407 } 408 progress++; 409 if (bus_dmamem_alloc(dmatag, len, 0, 0, &reqseg, 1, &reqrs, 410 BUS_DMA_NOWAIT)) { 411 goto dmafail; 412 } 413 progress++; 414 if (bus_dmamap_load_raw(dmatag, sbc->sbus_rquest_dmamap, &reqseg, reqrs, 415 len, LMAP_FLAGS) != 0) { 416 goto dmafail; 417 } 418 isp->isp_rquest_dma = sbc->sbus_rquest_dmamap->dm_segs[0].ds_addr; 419 progress++; 420 if (bus_dmamem_map(dmatag, &reqseg, reqrs, len, 421 (caddr_t *)&isp->isp_rquest, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 422 goto dmafail; 423 } 424 progress++; 425 426 len = ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp)); 427 if (bus_dmamap_create(dmatag, len, 1, len, 0, BUS_DMA_NOWAIT, 428 &sbc->sbus_result_dmamap) != 0) { 429 goto dmafail; 430 } 431 progress++; 432 if (bus_dmamem_alloc(dmatag, len, 0, 0, &rspseg, 1, &rsprs, 433 BUS_DMA_NOWAIT)) { 434 goto dmafail; 435 } 436 progress++; 437 if (bus_dmamap_load_raw(dmatag, sbc->sbus_result_dmamap, &rspseg, rsprs, 438 len, LMAP_FLAGS) != 0) { 439 goto dmafail; 440 } 441 progress++; 442 if (bus_dmamem_map(dmatag, &rspseg, rsprs, len, 443 (caddr_t *)&isp->isp_result, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 444 goto dmafail; 445 } 446 isp->isp_result_dma = sbc->sbus_result_dmamap->dm_segs[0].ds_addr; 447 return (0); 448 449 dmafail: 450 isp_prt(isp, ISP_LOGERR, "Mailbox DMA Setup Failure"); 451 452 if (progress >= 8) { 453 bus_dmamem_unmap(dmatag, 454 isp->isp_result, ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp))); 455 } 456 if (progress >= 7) { 457 bus_dmamap_unload(dmatag, sbc->sbus_result_dmamap); 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 } 465 466 467 if (progress >= 4) { 468 bus_dmamem_unmap(dmatag, 469 isp->isp_rquest, ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp))); 470 } 471 if (progress >= 3) { 472 bus_dmamap_unload(dmatag, sbc->sbus_rquest_dmamap); 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) != 0) { 522 XS_SETERR(xs, HBA_BOTCH); 523 return (CMD_COMPLETE); 524 } 525 526 bus_dmamap_sync(sbc->sbus_dmatag, dmap, 0, xs->datalen, 527 in? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 528 529 if (in) { 530 rq->req_flags |= REQFLAG_DATA_IN; 531 } else { 532 rq->req_flags |= REQFLAG_DATA_OUT; 533 } 534 535 if (XS_CDBLEN(xs) > 12) { 536 crq = (ispcontreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, *iptrp); 537 *iptrp = ISP_NXT_QENTRY(*iptrp, RQUEST_QUEUE_LEN(isp)); 538 if (*iptrp == optr) { 539 isp_prt(isp, ISP_LOGDEBUG0, "Request Queue Overflow++"); 540 bus_dmamap_unload(sbc->sbus_dmatag, dmap); 541 XS_SETERR(xs, HBA_BOTCH); 542 return (CMD_EAGAIN); 543 } 544 rq->req_seg_count = 2; 545 rq->req_dataseg[0].ds_count = 0; 546 rq->req_dataseg[0].ds_base = 0; 547 bzero((void *)crq, sizeof (*crq)); 548 crq->req_header.rqs_entry_count = 1; 549 crq->req_header.rqs_entry_type = RQSTYPE_DATASEG; 550 crq->req_dataseg[0].ds_count = xs->datalen; 551 crq->req_dataseg[0].ds_base = dmap->dm_segs[0].ds_addr; 552 ISP_SBUSIFY_ISPHDR(isp, &crq->req_header) 553 } else { 554 rq->req_dataseg[0].ds_count = xs->datalen; 555 rq->req_dataseg[0].ds_base = dmap->dm_segs[0].ds_addr; 556 rq->req_seg_count = 1; 557 } 558 559 mbxsync: 560 ISP_SWIZZLE_REQUEST(isp, rq); 561 bus_dmamap_sync(sbc->sbus_dmatag, sbc->sbus_rquest_dmamap, 0, 562 sbc->sbus_rquest_dmamap->dm_mapsize, BUS_DMASYNC_PREWRITE); 563 return (CMD_QUEUED); 564 } 565 566 static void 567 isp_sbus_dmateardown(isp, xs, handle) 568 struct ispsoftc *isp; 569 struct scsipi_xfer *xs; 570 u_int32_t handle; 571 { 572 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 573 bus_dmamap_t dmap; 574 575 dmap = sbc->sbus_dmamap[isp_handle_index(handle)]; 576 577 if (dmap->dm_nsegs == 0) { 578 panic("%s: dma map not already allocated\n", isp->isp_name); 579 /* NOTREACHED */ 580 } 581 bus_dmamap_sync(sbc->sbus_dmatag, dmap, 0, 582 xs->datalen, (xs->xs_control & XS_CTL_DATA_IN)? 583 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 584 bus_dmamap_unload(sbc->sbus_dmatag, dmap); 585 } 586
Indexes created Wed Oct 22 13:09:56 GMT 2025