isp_sbus.c revision 1.26.4.4
1 /* $NetBSD: isp_sbus.c,v 1.26.4.4 2001/03/16 19:09:28 he 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. The name of the author may not be used to endorse or promote products 44 * derived from this software without specific prior written permission. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 47 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 48 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 49 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 50 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 51 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 52 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 53 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 54 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 55 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 56 * SUCH DAMAGE. 57 * 58 */ 59 60 #include <sys/param.h> 61 #include <sys/systm.h> 62 #include <sys/device.h> 63 #include <sys/kernel.h> 64 #include <sys/malloc.h> 65 #include <sys/queue.h> 66 67 #include <machine/bus.h> 68 #include <machine/intr.h> 69 #include <machine/autoconf.h> 70 71 #include <dev/ic/isp_netbsd.h> 72 #include <dev/microcode/isp/asm_sbus.h> 73 #include <dev/sbus/sbusvar.h> 74 #include <sys/reboot.h> 75 76 /* 77 * Gross! But there's no way around this until either bus_dma is corrected 78 * or 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 #ifdef SCSIDEBUG 270 isp->isp_dblev |= ISP_LOGDEBUG1|ISP_LOGDEBUG2; 271 #endif 272 #ifdef DEBUG 273 isp->isp_dblev |= ISP_LOGDEBUG0; 274 isp->isp_dblev |= ISP_LOGCONFIG|ISP_LOGINFO; 275 #endif 276 #endif 277 278 isp->isp_confopts = self->dv_cfdata->cf_flags; 279 isp->isp_role = ISP_DEFAULT_ROLES; 280 281 /* 282 * There's no tool on sparc to set NVRAM for ISPs, so ignore it. 283 */ 284 isp->isp_confopts |= ISP_CFG_NONVRAM; 285 ISP_LOCK(isp); 286 isp->isp_osinfo.no_mbox_ints = 1; 287 isp_reset(isp); 288 if (isp->isp_state != ISP_RESETSTATE) { 289 ISP_UNLOCK(isp); 290 return; 291 } 292 ENABLE_INTS(isp); 293 isp_init(isp); 294 if (isp->isp_state != ISP_INITSTATE) { 295 isp_uninit(isp); 296 ISP_UNLOCK(isp); 297 return; 298 } 299 300 /* 301 * do generic attach. 302 */ 303 ISP_UNLOCK(isp); 304 isp_attach(isp); 305 if (isp->isp_state != ISP_RUNSTATE) { 306 ISP_LOCK(isp); 307 isp_uninit(isp); 308 ISP_UNLOCK(isp); 309 } 310 } 311 312 static int 313 isp_sbus_intr(arg) 314 void *arg; 315 { 316 int rv; 317 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *)arg; 318 bus_dmamap_sync(sbc->sbus_dmatag, sbc->sbus_result_dmamap, 0, 319 sbc->sbus_result_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD); 320 sbc->sbus_isp.isp_osinfo.onintstack = 1; 321 rv = isp_intr(arg); 322 sbc->sbus_isp.isp_osinfo.onintstack = 0; 323 return (rv); 324 } 325 326 static u_int16_t 327 isp_sbus_rd_reg(isp, regoff) 328 struct ispsoftc *isp; 329 int regoff; 330 { 331 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 332 int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 333 offset += (regoff & 0xff); 334 return (bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, offset)); 335 } 336 337 static void 338 isp_sbus_wr_reg(isp, regoff, val) 339 struct ispsoftc *isp; 340 int regoff; 341 u_int16_t val; 342 { 343 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 344 int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 345 offset += (regoff & 0xff); 346 bus_space_write_2(sbc->sbus_bustag, sbc->sbus_reg, offset, val); 347 } 348 349 static int 350 isp_sbus_mbxdma(isp) 351 struct ispsoftc *isp; 352 { 353 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 354 bus_dma_tag_t dmatag = sbc->sbus_dmatag; 355 bus_dma_segment_t reqseg, rspseg; 356 int reqrs, rsprs, i, progress; 357 size_t n; 358 bus_size_t len; 359 360 if (isp->isp_rquest_dma) 361 return (0); 362 363 n = sizeof (XS_T **) * isp->isp_maxcmds; 364 isp->isp_xflist = (XS_T **) malloc(n, M_DEVBUF, M_WAITOK); 365 if (isp->isp_xflist == NULL) { 366 isp_prt(isp, ISP_LOGERR, "cannot alloc xflist array"); 367 return (1); 368 } 369 bzero(isp->isp_xflist, n); 370 n = sizeof (bus_dmamap_t) * isp->isp_maxcmds; 371 sbc->sbus_dmamap = (bus_dmamap_t *) malloc(n, M_DEVBUF, M_WAITOK); 372 if (sbc->sbus_dmamap == NULL) { 373 free(isp->isp_xflist, M_DEVBUF); 374 isp->isp_xflist = NULL; 375 isp_prt(isp, ISP_LOGERR, "cannot alloc dmamap array"); 376 return (1); 377 } 378 for (i = 0; i < isp->isp_maxcmds; i++) { 379 /* Allocate a DMA handle */ 380 if (bus_dmamap_create(dmatag, MAXPHYS, 1, MAXPHYS, 0, 381 BUS_DMA_NOWAIT, &sbc->sbus_dmamap[i]) != 0) { 382 isp_prt(isp, ISP_LOGERR, "cmd DMA maps create error"); 383 break; 384 } 385 } 386 if (i < isp->isp_maxcmds) { 387 while (--i >= 0) { 388 bus_dmamap_destroy(dmatag, sbc->sbus_dmamap[i]); 389 } 390 free(isp->isp_xflist, M_DEVBUF); 391 free(sbc->sbus_dmamap, M_DEVBUF); 392 isp->isp_xflist = NULL; 393 sbc->sbus_dmamap = NULL; 394 return (1); 395 } 396 397 /* 398 * Allocate and map the request and response queues 399 */ 400 progress = 0; 401 len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); 402 if (bus_dmamap_create(dmatag, len, 1, len, 0, BUS_DMA_NOWAIT, 403 &sbc->sbus_rquest_dmamap) != 0) { 404 goto dmafail; 405 } 406 progress++; 407 if (bus_dmamem_alloc(dmatag, len, 0, 0, &reqseg, 1, &reqrs, 408 BUS_DMA_NOWAIT)) { 409 goto dmafail; 410 } 411 progress++; 412 if (bus_dmamap_load_raw(dmatag, sbc->sbus_rquest_dmamap, &reqseg, reqrs, 413 len, LMAP_FLAGS) != 0) { 414 goto dmafail; 415 } 416 isp->isp_rquest_dma = sbc->sbus_rquest_dmamap->dm_segs[0].ds_addr; 417 progress++; 418 if (bus_dmamem_map(dmatag, &reqseg, reqrs, len, 419 (caddr_t *)&isp->isp_rquest, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 420 goto dmafail; 421 } 422 progress++; 423 424 len = ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp)); 425 if (bus_dmamap_create(dmatag, len, 1, len, 0, BUS_DMA_NOWAIT, 426 &sbc->sbus_result_dmamap) != 0) { 427 goto dmafail; 428 } 429 progress++; 430 if (bus_dmamem_alloc(dmatag, len, 0, 0, &rspseg, 1, &rsprs, 431 BUS_DMA_NOWAIT)) { 432 goto dmafail; 433 } 434 progress++; 435 if (bus_dmamap_load_raw(dmatag, sbc->sbus_result_dmamap, &rspseg, rsprs, 436 len, LMAP_FLAGS) != 0) { 437 goto dmafail; 438 } 439 progress++; 440 if (bus_dmamem_map(dmatag, &rspseg, rsprs, len, 441 (caddr_t *)&isp->isp_result, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 442 goto dmafail; 443 } 444 isp->isp_result_dma = sbc->sbus_result_dmamap->dm_segs[0].ds_addr; 445 return (0); 446 447 dmafail: 448 isp_prt(isp, ISP_LOGERR, "Mailbox DMA Setup Failure"); 449 450 if (progress >= 8) { 451 bus_dmamem_unmap(dmatag, 452 isp->isp_result, ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp))); 453 } 454 if (progress >= 7) { 455 bus_dmamap_unload(dmatag, sbc->sbus_result_dmamap); 456 } 457 if (progress >= 6) { 458 bus_dmamem_free(dmatag, &rspseg, rsprs); 459 } 460 if (progress >= 5) { 461 bus_dmamap_destroy(dmatag, sbc->sbus_result_dmamap); 462 } 463 464 465 if (progress >= 4) { 466 bus_dmamem_unmap(dmatag, 467 isp->isp_rquest, ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp))); 468 } 469 if (progress >= 3) { 470 bus_dmamap_unload(dmatag, sbc->sbus_rquest_dmamap); 471 } 472 if (progress >= 2) { 473 bus_dmamem_free(dmatag, &reqseg, reqrs); 474 } 475 if (progress >= 1) { 476 bus_dmamap_destroy(dmatag, sbc->sbus_rquest_dmamap); 477 } 478 479 for (i = 0; i < isp->isp_maxcmds; i++) { 480 bus_dmamap_destroy(dmatag, sbc->sbus_dmamap[i]); 481 } 482 free(sbc->sbus_dmamap, M_DEVBUF); 483 free(isp->isp_xflist, M_DEVBUF); 484 isp->isp_xflist = NULL; 485 sbc->sbus_dmamap = NULL; 486 return (1); 487 } 488 489 /* 490 * Map a DMA request. 491 * We're guaranteed that rq->req_handle is a value from 1 to isp->isp_maxcmds. 492 */ 493 494 static int 495 isp_sbus_dmasetup(isp, xs, rq, iptrp, optr) 496 struct ispsoftc *isp; 497 struct scsipi_xfer *xs; 498 ispreq_t *rq; 499 u_int16_t *iptrp; 500 u_int16_t optr; 501 { 502 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 503 bus_dmamap_t dmap; 504 ispcontreq_t *crq; 505 int cansleep = (xs->xs_control & XS_CTL_NOSLEEP) == 0; 506 int in = (xs->xs_control & XS_CTL_DATA_IN) != 0; 507 508 if (xs->datalen == 0) { 509 rq->req_seg_count = 1; 510 goto mbxsync; 511 } 512 513 dmap = sbc->sbus_dmamap[isp_handle_index(rq->req_handle)]; 514 if (dmap->dm_nsegs != 0) { 515 panic("%s: dma map already allocated\n", isp->isp_name); 516 /* NOTREACHED */ 517 } 518 if (bus_dmamap_load(sbc->sbus_dmatag, dmap, xs->data, xs->datalen, 519 NULL, cansleep? BUS_DMA_WAITOK : BUS_DMA_NOWAIT) != 0) { 520 XS_SETERR(xs, HBA_BOTCH); 521 return (CMD_COMPLETE); 522 } 523 524 bus_dmamap_sync(sbc->sbus_dmatag, dmap, 0, xs->datalen, 525 in? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 526 527 if (in) { 528 rq->req_flags |= REQFLAG_DATA_IN; 529 } else { 530 rq->req_flags |= REQFLAG_DATA_OUT; 531 } 532 533 if (XS_CDBLEN(xs) > 12) { 534 crq = (ispcontreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, *iptrp); 535 *iptrp = ISP_NXT_QENTRY(*iptrp, RQUEST_QUEUE_LEN(isp)); 536 if (*iptrp == optr) { 537 isp_prt(isp, ISP_LOGDEBUG0, "Request Queue Overflow++"); 538 bus_dmamap_unload(sbc->sbus_dmatag, dmap); 539 XS_SETERR(xs, HBA_BOTCH); 540 return (CMD_EAGAIN); 541 } 542 rq->req_seg_count = 2; 543 rq->req_dataseg[0].ds_count = 0; 544 rq->req_dataseg[0].ds_base = 0; 545 bzero((void *)crq, sizeof (*crq)); 546 crq->req_header.rqs_entry_count = 1; 547 crq->req_header.rqs_entry_type = RQSTYPE_DATASEG; 548 crq->req_dataseg[0].ds_count = xs->datalen; 549 crq->req_dataseg[0].ds_base = dmap->dm_segs[0].ds_addr; 550 ISP_SBUSIFY_ISPHDR(isp, &crq->req_header) 551 } else { 552 rq->req_dataseg[0].ds_count = xs->datalen; 553 rq->req_dataseg[0].ds_base = dmap->dm_segs[0].ds_addr; 554 rq->req_seg_count = 1; 555 } 556 557 mbxsync: 558 ISP_SWIZZLE_REQUEST(isp, rq); 559 bus_dmamap_sync(sbc->sbus_dmatag, sbc->sbus_rquest_dmamap, 0, 560 sbc->sbus_rquest_dmamap->dm_mapsize, BUS_DMASYNC_PREWRITE); 561 return (CMD_QUEUED); 562 } 563 564 static void 565 isp_sbus_dmateardown(isp, xs, handle) 566 struct ispsoftc *isp; 567 struct scsipi_xfer *xs; 568 u_int32_t handle; 569 { 570 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 571 bus_dmamap_t dmap; 572 573 dmap = sbc->sbus_dmamap[isp_handle_index(handle)]; 574 575 if (dmap->dm_nsegs == 0) { 576 panic("%s: dma map not already allocated\n", isp->isp_name); 577 /* NOTREACHED */ 578 } 579 bus_dmamap_sync(sbc->sbus_dmatag, dmap, 0, 580 xs->datalen, (xs->xs_control & XS_CTL_DATA_IN)? 581 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 582 bus_dmamap_unload(sbc->sbus_dmatag, dmap); 583 } 584
Indexes created Tue Oct 21 08:09:48 GMT 2025