isp_sbus.c revision 1.63.4.5
1 /* $NetBSD: isp_sbus.c,v 1.63.4.5 2008/03/17 09:15:27 yamt Exp $ */ 2 /* 3 * SBus specific probe and attach routines for Qlogic ISP SCSI adapters. 4 * 5 * Copyright (C) 1997, 1998, 1999 National Aeronautics & Space Administration 6 * All rights reserved. 7 * 8 * Additional Copyright (C) 2000-2007 by Matthew Jacob 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 * 33 */ 34 35 #include <sys/cdefs.h> 36 __KERNEL_RCSID(0, "$NetBSD: isp_sbus.c,v 1.63.4.5 2008/03/17 09:15:27 yamt Exp $"); 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/device.h> 41 #include <sys/kernel.h> 42 #include <sys/malloc.h> 43 #include <sys/queue.h> 44 #include <dev/ic/isp_netbsd.h> 45 #include <sys/intr.h> 46 #include <machine/autoconf.h> 47 #include <dev/sbus/sbusvar.h> 48 #include <sys/reboot.h> 49 50 static void isp_sbus_reset0(ispsoftc_t *); 51 static void isp_sbus_reset1(ispsoftc_t *); 52 static int isp_sbus_intr(void *); 53 static int 54 isp_sbus_rd_isr(ispsoftc_t *, uint32_t *, uint16_t *, uint16_t *); 55 static uint32_t isp_sbus_rd_reg(ispsoftc_t *, int); 56 static void isp_sbus_wr_reg (ispsoftc_t *, int, uint32_t); 57 static int isp_sbus_mbxdma(ispsoftc_t *); 58 static int isp_sbus_dmasetup(ispsoftc_t *, XS_T *, ispreq_t *, uint32_t *, 59 uint32_t); 60 static void isp_sbus_dmateardown(ispsoftc_t *, XS_T *, uint32_t); 61 62 #ifndef ISP_DISABLE_FW 63 #include <dev/microcode/isp/asm_sbus.h> 64 #else 65 #define ISP_1000_RISC_CODE NULL 66 #endif 67 68 static const struct ispmdvec mdvec = { 69 isp_sbus_rd_isr, 70 isp_sbus_rd_reg, 71 isp_sbus_wr_reg, 72 isp_sbus_mbxdma, 73 isp_sbus_dmasetup, 74 isp_sbus_dmateardown, 75 isp_sbus_reset0, 76 isp_sbus_reset1, 77 NULL, 78 ISP_1000_RISC_CODE, 79 0, 80 0 81 }; 82 83 struct isp_sbussoftc { 84 ispsoftc_t sbus_isp; 85 struct sbusdev sbus_sd; 86 sdparam sbus_dev; 87 struct scsipi_channel sbus_chan; 88 bus_space_tag_t sbus_bustag; 89 bus_space_handle_t sbus_reg; 90 int sbus_node; 91 int sbus_pri; 92 struct ispmdvec sbus_mdvec; 93 bus_dmamap_t *sbus_dmamap; 94 int16_t sbus_poff[_NREG_BLKS]; 95 }; 96 97 98 static int isp_match(struct device *, struct cfdata *, void *); 99 static void isp_sbus_attach(struct device *, struct device *, void *); 100 CFATTACH_DECL(isp_sbus, sizeof (struct isp_sbussoftc), 101 isp_match, isp_sbus_attach, NULL, NULL); 102 103 static int 104 isp_match(struct device *parent, struct cfdata *cf, void *aux) 105 { 106 int rv; 107 struct sbus_attach_args *sa = aux; 108 109 rv = (strcmp(cf->cf_name, sa->sa_name) == 0 || 110 strcmp("PTI,ptisp", sa->sa_name) == 0 || 111 strcmp("ptisp", sa->sa_name) == 0 || 112 strcmp("SUNW,isp", sa->sa_name) == 0 || 113 strcmp("QLGC,isp", sa->sa_name) == 0); 114 115 return (rv); 116 } 117 118 119 static void 120 isp_sbus_attach(struct device *parent, struct device *self, void *aux) 121 { 122 int freq, ispburst, sbusburst; 123 struct sbus_attach_args *sa = aux; 124 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) self; 125 ispsoftc_t *isp = &sbc->sbus_isp; 126 127 printf(" for %s\n", sa->sa_name); 128 129 isp->isp_nchan = isp->isp_osinfo.adapter.adapt_nchannels = 1; 130 131 sbc->sbus_bustag = sa->sa_bustag; 132 if (sa->sa_nintr != 0) 133 sbc->sbus_pri = sa->sa_pri; 134 sbc->sbus_mdvec = mdvec; 135 136 if (sa->sa_npromvaddrs) { 137 sbus_promaddr_to_handle(sa->sa_bustag, 138 sa->sa_promvaddrs[0], &sbc->sbus_reg); 139 } else { 140 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, sa->sa_offset, 141 sa->sa_size, 0, &sbc->sbus_reg) != 0) { 142 printf("%s: cannot map registers\n", self->dv_xname); 143 return; 144 } 145 } 146 sbc->sbus_node = sa->sa_node; 147 148 freq = prom_getpropint(sa->sa_node, "clock-frequency", 0); 149 if (freq) { 150 /* 151 * Convert from HZ to MHz, rounding up. 152 */ 153 freq = (freq + 500000)/1000000; 154 } 155 sbc->sbus_mdvec.dv_clock = freq; 156 157 /* 158 * Now figure out what the proper burst sizes, etc., to use. 159 * Unfortunately, there is no ddi_dma_burstsizes here which 160 * walks up the tree finding the limiting burst size node (if 161 * any). 162 */ 163 sbusburst = ((struct sbus_softc *)parent)->sc_burst; 164 if (sbusburst == 0) 165 sbusburst = SBUS_BURST_32 - 1; 166 ispburst = prom_getpropint(sa->sa_node, "burst-sizes", -1); 167 if (ispburst == -1) { 168 ispburst = sbusburst; 169 } 170 ispburst &= sbusburst; 171 ispburst &= ~(1 << 7); 172 ispburst &= ~(1 << 6); 173 sbc->sbus_mdvec.dv_conf1 = 0; 174 if (ispburst & (1 << 5)) { 175 sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_32; 176 } else if (ispburst & (1 << 4)) { 177 sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_16; 178 } else if (ispburst & (1 << 3)) { 179 sbc->sbus_mdvec.dv_conf1 = 180 BIU_SBUS_CONF1_BURST8 | BIU_SBUS_CONF1_FIFO_8; 181 } 182 if (sbc->sbus_mdvec.dv_conf1) { 183 sbc->sbus_mdvec.dv_conf1 |= BIU_BURST_ENABLE; 184 } 185 186 isp->isp_mdvec = &sbc->sbus_mdvec; 187 isp->isp_bustype = ISP_BT_SBUS; 188 isp->isp_type = ISP_HA_SCSI_UNKNOWN; 189 isp->isp_param = &sbc->sbus_dev; 190 isp->isp_dmatag = sa->sa_dmatag; 191 MEMZERO(isp->isp_param, sizeof (sdparam)); 192 isp->isp_osinfo.chan = &sbc->sbus_chan; 193 194 sbc->sbus_poff[BIU_BLOCK >> _BLK_REG_SHFT] = BIU_REGS_OFF; 195 sbc->sbus_poff[MBOX_BLOCK >> _BLK_REG_SHFT] = SBUS_MBOX_REGS_OFF; 196 sbc->sbus_poff[SXP_BLOCK >> _BLK_REG_SHFT] = SBUS_SXP_REGS_OFF; 197 sbc->sbus_poff[RISC_BLOCK >> _BLK_REG_SHFT] = SBUS_RISC_REGS_OFF; 198 sbc->sbus_poff[DMA_BLOCK >> _BLK_REG_SHFT] = DMA_REGS_OFF; 199 200 /* Establish interrupt channel */ 201 bus_intr_establish(sbc->sbus_bustag, sbc->sbus_pri, IPL_BIO, 202 isp_sbus_intr, sbc); 203 sbus_establish(&sbc->sbus_sd, &sbc->sbus_isp.isp_osinfo.dev); 204 205 /* 206 * Set up logging levels. 207 */ 208 #ifdef ISP_LOGDEFAULT 209 isp->isp_dblev = ISP_LOGDEFAULT; 210 #else 211 isp->isp_dblev = ISP_LOGWARN|ISP_LOGERR; 212 if (bootverbose) 213 isp->isp_dblev |= ISP_LOGCONFIG|ISP_LOGINFO; 214 #ifdef SCSIDEBUG 215 isp->isp_dblev |= ISP_LOGDEBUG1|ISP_LOGDEBUG2; 216 #endif 217 #ifdef DEBUG 218 isp->isp_dblev |= ISP_LOGDEBUG0; 219 #endif 220 #endif 221 222 isp->isp_confopts = device_cfdata(self)->cf_flags; 223 SDPARAM(isp, 0)->role = ISP_DEFAULT_ROLES; 224 225 /* 226 * There's no tool on sparc to set NVRAM for ISPs, so ignore it. 227 */ 228 isp->isp_confopts |= ISP_CFG_NONVRAM; 229 230 /* 231 * Mark things if we're a PTI SBus adapter. 232 */ 233 if (strcmp("PTI,ptisp", sa->sa_name) == 0 || 234 strcmp("ptisp", sa->sa_name) == 0) { 235 SDPARAM(isp, 0)->isp_ptisp = 1; 236 } 237 ISP_LOCK(isp); 238 isp_reset(isp); 239 if (isp->isp_state != ISP_RESETSTATE) { 240 ISP_UNLOCK(isp); 241 return; 242 } 243 ISP_ENABLE_INTS(isp); 244 isp_init(isp); 245 if (isp->isp_state != ISP_INITSTATE) { 246 isp_uninit(isp); 247 ISP_UNLOCK(isp); 248 return; 249 } 250 251 /* 252 * do generic attach. 253 */ 254 ISP_UNLOCK(isp); 255 isp_attach(isp); 256 } 257 258 259 static void 260 isp_sbus_reset0(ispsoftc_t *isp) 261 { 262 ISP_DISABLE_INTS(isp); 263 } 264 265 static void 266 isp_sbus_reset1(ispsoftc_t *isp) 267 { 268 ISP_ENABLE_INTS(isp); 269 } 270 271 static int 272 isp_sbus_intr(void *arg) 273 { 274 uint32_t isr; 275 uint16_t sema, mbox; 276 ispsoftc_t *isp = arg; 277 278 if (ISP_READ_ISR(isp, &isr, &sema, &mbox) == 0) { 279 isp->isp_intbogus++; 280 return (0); 281 } else { 282 struct isp_sbussoftc *sbc = arg; 283 sbc->sbus_isp.isp_osinfo.onintstack = 1; 284 isp_intr(isp, isr, sema, mbox); 285 sbc->sbus_isp.isp_osinfo.onintstack = 0; 286 return (1); 287 } 288 } 289 290 #define IspVirt2Off(a, x) \ 291 (((struct isp_sbussoftc *)a)->sbus_poff[((x) & _BLK_REG_MASK) >> \ 292 _BLK_REG_SHFT] + ((x) & 0xff)) 293 294 #define BXR2(sbc, off) \ 295 bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, off) 296 297 static int 298 isp_sbus_rd_isr(ispsoftc_t *isp, uint32_t *isrp, 299 uint16_t *semap, uint16_t *mbp) 300 { 301 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 302 uint32_t isr; 303 uint16_t sema; 304 305 isr = BXR2(sbc, IspVirt2Off(isp, BIU_ISR)); 306 sema = BXR2(sbc, IspVirt2Off(isp, BIU_SEMA)); 307 isp_prt(isp, ISP_LOGDEBUG3, "ISR 0x%x SEMA 0x%x", isr, sema); 308 isr &= INT_PENDING_MASK(isp); 309 sema &= BIU_SEMA_LOCK; 310 if (isr == 0 && sema == 0) { 311 return (0); 312 } 313 *isrp = isr; 314 if ((*semap = sema) != 0) { 315 *mbp = BXR2(sbc, IspVirt2Off(isp, OUTMAILBOX0)); 316 } 317 return (1); 318 } 319 320 static uint32_t 321 isp_sbus_rd_reg(ispsoftc_t *isp, int regoff) 322 { 323 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 324 int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 325 offset += (regoff & 0xff); 326 return (bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, offset)); 327 } 328 329 static void 330 isp_sbus_wr_reg(ispsoftc_t *isp, int regoff, uint32_t val) 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 bus_space_write_2(sbc->sbus_bustag, sbc->sbus_reg, offset, val); 336 } 337 338 static int 339 isp_sbus_mbxdma(ispsoftc_t *isp) 340 { 341 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 342 bus_dma_segment_t reqseg, rspseg; 343 int reqrs, rsprs, i, progress; 344 size_t n; 345 bus_size_t len; 346 347 if (isp->isp_rquest_dma) 348 return (0); 349 350 n = isp->isp_maxcmds * sizeof (XS_T *); 351 isp->isp_xflist = (XS_T **) malloc(n, M_DEVBUF, M_WAITOK); 352 if (isp->isp_xflist == NULL) { 353 isp_prt(isp, ISP_LOGERR, "cannot alloc xflist array"); 354 return (1); 355 } 356 MEMZERO(isp->isp_xflist, n); 357 n = sizeof (bus_dmamap_t) * isp->isp_maxcmds; 358 sbc->sbus_dmamap = (bus_dmamap_t *) malloc(n, M_DEVBUF, M_WAITOK); 359 if (sbc->sbus_dmamap == NULL) { 360 free(isp->isp_xflist, M_DEVBUF); 361 isp->isp_xflist = NULL; 362 isp_prt(isp, ISP_LOGERR, "cannot alloc dmamap array"); 363 return (1); 364 } 365 for (i = 0; i < isp->isp_maxcmds; i++) { 366 /* Allocate a DMA handle */ 367 if (bus_dmamap_create(isp->isp_dmatag, MAXPHYS, 1, MAXPHYS, 368 1 << 24, BUS_DMA_NOWAIT, &sbc->sbus_dmamap[i]) != 0) { 369 isp_prt(isp, ISP_LOGERR, "cmd DMA maps create error"); 370 break; 371 } 372 } 373 if (i < isp->isp_maxcmds) { 374 while (--i >= 0) { 375 bus_dmamap_destroy(isp->isp_dmatag, 376 sbc->sbus_dmamap[i]); 377 } 378 free(isp->isp_xflist, M_DEVBUF); 379 free(sbc->sbus_dmamap, M_DEVBUF); 380 isp->isp_xflist = NULL; 381 sbc->sbus_dmamap = NULL; 382 return (1); 383 } 384 385 /* 386 * Allocate and map the request and response queues 387 */ 388 progress = 0; 389 len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); 390 if (bus_dmamem_alloc(isp->isp_dmatag, len, 0, 0, &reqseg, 1, &reqrs, 391 BUS_DMA_NOWAIT)) { 392 goto dmafail; 393 } 394 progress++; 395 if (bus_dmamem_map(isp->isp_dmatag, &reqseg, reqrs, len, 396 (void *)&isp->isp_rquest, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 397 goto dmafail; 398 } 399 progress++; 400 if (bus_dmamap_create(isp->isp_dmatag, len, 1, len, 1 << 24, 401 BUS_DMA_NOWAIT, &isp->isp_rqdmap) != 0) { 402 goto dmafail; 403 } 404 progress++; 405 if (bus_dmamap_load(isp->isp_dmatag, isp->isp_rqdmap, 406 isp->isp_rquest, len, NULL, BUS_DMA_NOWAIT) != 0) { 407 goto dmafail; 408 } 409 progress++; 410 isp->isp_rquest_dma = isp->isp_rqdmap->dm_segs[0].ds_addr; 411 412 len = ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp)); 413 if (bus_dmamem_alloc(isp->isp_dmatag, len, 0, 0, &rspseg, 1, &rsprs, 414 BUS_DMA_NOWAIT)) { 415 goto dmafail; 416 } 417 progress++; 418 if (bus_dmamem_map(isp->isp_dmatag, &rspseg, rsprs, len, 419 (void *)&isp->isp_result, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 420 goto dmafail; 421 } 422 progress++; 423 if (bus_dmamap_create(isp->isp_dmatag, len, 1, len, 1 << 24, 424 BUS_DMA_NOWAIT, &isp->isp_rsdmap) != 0) { 425 goto dmafail; 426 } 427 progress++; 428 if (bus_dmamap_load(isp->isp_dmatag, isp->isp_rsdmap, 429 isp->isp_result, len, NULL, BUS_DMA_NOWAIT) != 0) { 430 goto dmafail; 431 } 432 isp->isp_result_dma = isp->isp_rsdmap->dm_segs[0].ds_addr; 433 434 return (0); 435 436 dmafail: 437 isp_prt(isp, ISP_LOGERR, "Mailbox DMA Setup Failure"); 438 439 if (progress >= 8) { 440 bus_dmamap_unload(isp->isp_dmatag, isp->isp_rsdmap); 441 } 442 if (progress >= 7) { 443 bus_dmamap_destroy(isp->isp_dmatag, isp->isp_rsdmap); 444 } 445 if (progress >= 6) { 446 bus_dmamem_unmap(isp->isp_dmatag, 447 isp->isp_result, ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp))); 448 } 449 if (progress >= 5) { 450 bus_dmamem_free(isp->isp_dmatag, &rspseg, rsprs); 451 } 452 453 if (progress >= 4) { 454 bus_dmamap_unload(isp->isp_dmatag, isp->isp_rqdmap); 455 } 456 if (progress >= 3) { 457 bus_dmamap_destroy(isp->isp_dmatag, isp->isp_rqdmap); 458 } 459 if (progress >= 2) { 460 bus_dmamem_unmap(isp->isp_dmatag, 461 isp->isp_rquest, ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp))); 462 } 463 if (progress >= 1) { 464 bus_dmamem_free(isp->isp_dmatag, &reqseg, reqrs); 465 } 466 467 for (i = 0; i < isp->isp_maxcmds; i++) { 468 bus_dmamap_destroy(isp->isp_dmatag, sbc->sbus_dmamap[i]); 469 } 470 free(sbc->sbus_dmamap, M_DEVBUF); 471 free(isp->isp_xflist, M_DEVBUF); 472 isp->isp_xflist = NULL; 473 sbc->sbus_dmamap = NULL; 474 return (1); 475 } 476 477 /* 478 * Map a DMA request. 479 * We're guaranteed that rq->req_handle is a value from 1 to isp->isp_maxcmds. 480 */ 481 482 static int 483 isp_sbus_dmasetup(ispsoftc_t *isp, XS_T *xs, ispreq_t *rq, 484 uint32_t *nxtip, uint32_t optr) 485 { 486 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 487 bus_dmamap_t dmap; 488 ispreq_t *qep; 489 int error, cansleep = (xs->xs_control & XS_CTL_NOSLEEP) == 0; 490 int in = (xs->xs_control & XS_CTL_DATA_IN) != 0; 491 492 qep = (ispreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, isp->isp_reqidx); 493 if (xs->datalen == 0) { 494 rq->req_seg_count = 1; 495 goto mbxsync; 496 } 497 498 dmap = sbc->sbus_dmamap[isp_handle_index(rq->req_handle)]; 499 if (dmap->dm_nsegs != 0) { 500 panic("%s: DMA map already allocated", isp->isp_name); 501 /* NOTREACHED */ 502 } 503 error = bus_dmamap_load(isp->isp_dmatag, dmap, xs->data, xs->datalen, 504 NULL, (cansleep ? BUS_DMA_WAITOK : BUS_DMA_NOWAIT) | 505 BUS_DMA_STREAMING); 506 if (error != 0) { 507 XS_SETERR(xs, HBA_BOTCH); 508 if (error == EAGAIN || error == ENOMEM) 509 return (CMD_EAGAIN); 510 else 511 return (CMD_COMPLETE); 512 } 513 514 bus_dmamap_sync(isp->isp_dmatag, dmap, 0, xs->datalen, 515 in? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 516 517 if (in) { 518 rq->req_flags |= REQFLAG_DATA_IN; 519 } else { 520 rq->req_flags |= REQFLAG_DATA_OUT; 521 } 522 523 if (XS_CDBLEN(xs) > 12) { 524 uint32_t onxti; 525 ispcontreq_t local, *crq = &local, *cqe; 526 527 onxti = *nxtip; 528 cqe = (ispcontreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, onxti); 529 *nxtip = ISP_NXT_QENTRY(onxti, RQUEST_QUEUE_LEN(isp)); 530 if (*nxtip == optr) { 531 isp_prt(isp, ISP_LOGDEBUG0, "Request Queue Overflow++"); 532 bus_dmamap_unload(isp->isp_dmatag, dmap); 533 XS_SETERR(xs, HBA_BOTCH); 534 return (CMD_EAGAIN); 535 } 536 rq->req_seg_count = 2; 537 MEMZERO((void *)crq, sizeof (*crq)); 538 crq->req_header.rqs_entry_count = 1; 539 crq->req_header.rqs_entry_type = RQSTYPE_DATASEG; 540 crq->req_dataseg[0].ds_count = xs->datalen; 541 crq->req_dataseg[0].ds_base = dmap->dm_segs[0].ds_addr; 542 isp_put_cont_req(isp, crq, cqe); 543 MEMORYBARRIER(isp, SYNC_REQUEST, onxti, QENTRY_LEN); 544 } else { 545 rq->req_seg_count = 1; 546 rq->req_dataseg[0].ds_count = xs->datalen; 547 rq->req_dataseg[0].ds_base = dmap->dm_segs[0].ds_addr; 548 } 549 550 mbxsync: 551 if (XS_CDBLEN(xs) > 12) { 552 isp_put_extended_request(isp, 553 (ispextreq_t *)rq, (ispextreq_t *) qep); 554 } else { 555 isp_put_request(isp, rq, qep); 556 } 557 return (CMD_QUEUED); 558 } 559 560 static void 561 isp_sbus_dmateardown(ispsoftc_t *isp, XS_T *xs, uint32_t handle) 562 { 563 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 564 bus_dmamap_t dmap; 565 566 dmap = sbc->sbus_dmamap[isp_handle_index(handle)]; 567 568 if (dmap->dm_nsegs == 0) { 569 panic("%s: DMA map not already allocated", isp->isp_name); 570 /* NOTREACHED */ 571 } 572 bus_dmamap_sync(isp->isp_dmatag, dmap, 0, 573 xs->datalen, (xs->xs_control & XS_CTL_DATA_IN)? 574 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 575 bus_dmamap_unload(isp->isp_dmatag, dmap); 576 } 577
Indexes created Tue Oct 21 05:10:09 GMT 2025