isp_sbus.c revision 1.73.4.2
1 /* $NetBSD: isp_sbus.c,v 1.73.4.2 2009/06/20 07:20:28 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 1.73.4.2 2009/06/20 07:20:28 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(device_t, cfdata_t, void *); 99 static void isp_sbus_attach(device_t, device_t, 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(device_t parent, cfdata_t 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(device_t parent, device_t 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 struct sbus_softc *sbsc = device_private(parent); 126 ispsoftc_t *isp = &sbc->sbus_isp; 127 128 printf(" for %s\n", sa->sa_name); 129 130 isp->isp_nchan = isp->isp_osinfo.adapter.adapt_nchannels = 1; 131 132 sbc->sbus_bustag = sa->sa_bustag; 133 if (sa->sa_nintr != 0) 134 sbc->sbus_pri = sa->sa_pri; 135 sbc->sbus_mdvec = mdvec; 136 137 if (sa->sa_npromvaddrs) { 138 sbus_promaddr_to_handle(sa->sa_bustag, 139 sa->sa_promvaddrs[0], &sbc->sbus_reg); 140 } else { 141 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, sa->sa_offset, 142 sa->sa_size, 0, &sbc->sbus_reg) != 0) { 143 aprint_error_dev(self, "cannot map registers\n"); 144 return; 145 } 146 } 147 sbc->sbus_node = sa->sa_node; 148 149 freq = prom_getpropint(sa->sa_node, "clock-frequency", 0); 150 if (freq) { 151 /* 152 * Convert from HZ to MHz, rounding up. 153 */ 154 freq = (freq + 500000)/1000000; 155 } 156 sbc->sbus_mdvec.dv_clock = freq; 157 158 /* 159 * Now figure out what the proper burst sizes, etc., to use. 160 * Unfortunately, there is no ddi_dma_burstsizes here which 161 * walks up the tree finding the limiting burst size node (if 162 * any). 163 */ 164 sbusburst = sbsc->sc_burst; 165 if (sbusburst == 0) 166 sbusburst = SBUS_BURST_32 - 1; 167 ispburst = prom_getpropint(sa->sa_node, "burst-sizes", -1); 168 if (ispburst == -1) { 169 ispburst = sbusburst; 170 } 171 ispburst &= sbusburst; 172 ispburst &= ~(1 << 7); 173 ispburst &= ~(1 << 6); 174 sbc->sbus_mdvec.dv_conf1 = 0; 175 if (ispburst & (1 << 5)) { 176 sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_32; 177 } else if (ispburst & (1 << 4)) { 178 sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_16; 179 } else if (ispburst & (1 << 3)) { 180 sbc->sbus_mdvec.dv_conf1 = 181 BIU_SBUS_CONF1_BURST8 | BIU_SBUS_CONF1_FIFO_8; 182 } 183 if (sbc->sbus_mdvec.dv_conf1) { 184 sbc->sbus_mdvec.dv_conf1 |= BIU_BURST_ENABLE; 185 } 186 187 isp->isp_mdvec = &sbc->sbus_mdvec; 188 isp->isp_bustype = ISP_BT_SBUS; 189 isp->isp_type = ISP_HA_SCSI_UNKNOWN; 190 isp->isp_param = &sbc->sbus_dev; 191 isp->isp_dmatag = sa->sa_dmatag; 192 MEMZERO(isp->isp_param, sizeof (sdparam)); 193 isp->isp_osinfo.chan = &sbc->sbus_chan; 194 195 sbc->sbus_poff[BIU_BLOCK >> _BLK_REG_SHFT] = BIU_REGS_OFF; 196 sbc->sbus_poff[MBOX_BLOCK >> _BLK_REG_SHFT] = SBUS_MBOX_REGS_OFF; 197 sbc->sbus_poff[SXP_BLOCK >> _BLK_REG_SHFT] = SBUS_SXP_REGS_OFF; 198 sbc->sbus_poff[RISC_BLOCK >> _BLK_REG_SHFT] = SBUS_RISC_REGS_OFF; 199 sbc->sbus_poff[DMA_BLOCK >> _BLK_REG_SHFT] = DMA_REGS_OFF; 200 201 /* Establish interrupt channel */ 202 bus_intr_establish(sbc->sbus_bustag, sbc->sbus_pri, IPL_BIO, 203 isp_sbus_intr, sbc); 204 sbus_establish(&sbc->sbus_sd, &sbc->sbus_isp.isp_osinfo.dev); 205 206 /* 207 * Set up logging levels. 208 */ 209 #ifdef ISP_LOGDEFAULT 210 isp->isp_dblev = ISP_LOGDEFAULT; 211 #else 212 isp->isp_dblev = ISP_LOGWARN|ISP_LOGERR; 213 if (bootverbose) 214 isp->isp_dblev |= ISP_LOGCONFIG|ISP_LOGINFO; 215 #ifdef SCSIDEBUG 216 isp->isp_dblev |= ISP_LOGDEBUG1|ISP_LOGDEBUG2; 217 #endif 218 #ifdef DEBUG 219 isp->isp_dblev |= ISP_LOGDEBUG0; 220 #endif 221 #endif 222 223 isp->isp_confopts = device_cfdata(self)->cf_flags; 224 SDPARAM(isp, 0)->role = ISP_DEFAULT_ROLES; 225 226 /* 227 * There's no tool on sparc to set NVRAM for ISPs, so ignore it. 228 */ 229 isp->isp_confopts |= ISP_CFG_NONVRAM; 230 231 /* 232 * Mark things if we're a PTI SBus adapter. 233 */ 234 if (strcmp("PTI,ptisp", sa->sa_name) == 0 || 235 strcmp("ptisp", sa->sa_name) == 0) { 236 SDPARAM(isp, 0)->isp_ptisp = 1; 237 } 238 ISP_LOCK(isp); 239 isp_reset(isp); 240 if (isp->isp_state != ISP_RESETSTATE) { 241 ISP_UNLOCK(isp); 242 return; 243 } 244 ISP_ENABLE_INTS(isp); 245 isp_init(isp); 246 if (isp->isp_state != ISP_INITSTATE) { 247 isp_uninit(isp); 248 ISP_UNLOCK(isp); 249 return; 250 } 251 252 /* 253 * do generic attach. 254 */ 255 ISP_UNLOCK(isp); 256 isp_attach(isp); 257 } 258 259 260 static void 261 isp_sbus_reset0(ispsoftc_t *isp) 262 { 263 ISP_DISABLE_INTS(isp); 264 } 265 266 static void 267 isp_sbus_reset1(ispsoftc_t *isp) 268 { 269 ISP_ENABLE_INTS(isp); 270 } 271 272 static int 273 isp_sbus_intr(void *arg) 274 { 275 uint32_t isr; 276 uint16_t sema, mbox; 277 ispsoftc_t *isp = arg; 278 279 if (ISP_READ_ISR(isp, &isr, &sema, &mbox) == 0) { 280 isp->isp_intbogus++; 281 return (0); 282 } else { 283 struct isp_sbussoftc *sbc = arg; 284 sbc->sbus_isp.isp_osinfo.onintstack = 1; 285 isp_intr(isp, isr, sema, mbox); 286 sbc->sbus_isp.isp_osinfo.onintstack = 0; 287 return (1); 288 } 289 } 290 291 #define IspVirt2Off(a, x) \ 292 (((struct isp_sbussoftc *)a)->sbus_poff[((x) & _BLK_REG_MASK) >> \ 293 _BLK_REG_SHFT] + ((x) & 0xff)) 294 295 #define BXR2(sbc, off) \ 296 bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, off) 297 298 static int 299 isp_sbus_rd_isr(ispsoftc_t *isp, uint32_t *isrp, 300 uint16_t *semap, uint16_t *mbp) 301 { 302 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 303 uint32_t isr; 304 uint16_t sema; 305 306 isr = BXR2(sbc, IspVirt2Off(isp, BIU_ISR)); 307 sema = BXR2(sbc, IspVirt2Off(isp, BIU_SEMA)); 308 isp_prt(isp, ISP_LOGDEBUG3, "ISR 0x%x SEMA 0x%x", isr, sema); 309 isr &= INT_PENDING_MASK(isp); 310 sema &= BIU_SEMA_LOCK; 311 if (isr == 0 && sema == 0) { 312 return (0); 313 } 314 *isrp = isr; 315 if ((*semap = sema) != 0) { 316 *mbp = BXR2(sbc, IspVirt2Off(isp, OUTMAILBOX0)); 317 } 318 return (1); 319 } 320 321 static uint32_t 322 isp_sbus_rd_reg(ispsoftc_t *isp, int regoff) 323 { 324 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 325 int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 326 offset += (regoff & 0xff); 327 return (bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, offset)); 328 } 329 330 static void 331 isp_sbus_wr_reg(ispsoftc_t *isp, int regoff, uint32_t val) 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 bus_space_write_2(sbc->sbus_bustag, sbc->sbus_reg, offset, val); 337 } 338 339 static int 340 isp_sbus_mbxdma(ispsoftc_t *isp) 341 { 342 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 343 bus_dma_segment_t reqseg, rspseg; 344 int reqrs, rsprs, i, progress; 345 size_t n; 346 bus_size_t len; 347 348 if (isp->isp_rquest_dma) 349 return (0); 350 351 n = isp->isp_maxcmds * sizeof (XS_T *); 352 isp->isp_xflist = (XS_T **) malloc(n, M_DEVBUF, M_WAITOK); 353 if (isp->isp_xflist == NULL) { 354 isp_prt(isp, ISP_LOGERR, "cannot alloc xflist array"); 355 return (1); 356 } 357 MEMZERO(isp->isp_xflist, n); 358 n = sizeof (bus_dmamap_t) * isp->isp_maxcmds; 359 sbc->sbus_dmamap = (bus_dmamap_t *) malloc(n, M_DEVBUF, M_WAITOK); 360 if (sbc->sbus_dmamap == NULL) { 361 free(isp->isp_xflist, M_DEVBUF); 362 isp->isp_xflist = NULL; 363 isp_prt(isp, ISP_LOGERR, "cannot alloc dmamap array"); 364 return (1); 365 } 366 for (i = 0; i < isp->isp_maxcmds; i++) { 367 /* Allocate a DMA handle */ 368 if (bus_dmamap_create(isp->isp_dmatag, MAXPHYS, 1, MAXPHYS, 369 1 << 24, BUS_DMA_NOWAIT, &sbc->sbus_dmamap[i]) != 0) { 370 isp_prt(isp, ISP_LOGERR, "cmd DMA maps create error"); 371 break; 372 } 373 } 374 if (i < isp->isp_maxcmds) { 375 while (--i >= 0) { 376 bus_dmamap_destroy(isp->isp_dmatag, 377 sbc->sbus_dmamap[i]); 378 } 379 free(isp->isp_xflist, M_DEVBUF); 380 free(sbc->sbus_dmamap, M_DEVBUF); 381 isp->isp_xflist = NULL; 382 sbc->sbus_dmamap = NULL; 383 return (1); 384 } 385 386 /* 387 * Allocate and map the request and response queues 388 */ 389 progress = 0; 390 len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); 391 if (bus_dmamem_alloc(isp->isp_dmatag, len, 0, 0, &reqseg, 1, &reqrs, 392 BUS_DMA_NOWAIT)) { 393 goto dmafail; 394 } 395 progress++; 396 if (bus_dmamem_map(isp->isp_dmatag, &reqseg, reqrs, len, 397 (void *)&isp->isp_rquest, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 398 goto dmafail; 399 } 400 progress++; 401 if (bus_dmamap_create(isp->isp_dmatag, len, 1, len, 1 << 24, 402 BUS_DMA_NOWAIT, &isp->isp_rqdmap) != 0) { 403 goto dmafail; 404 } 405 progress++; 406 if (bus_dmamap_load(isp->isp_dmatag, isp->isp_rqdmap, 407 isp->isp_rquest, len, NULL, BUS_DMA_NOWAIT) != 0) { 408 goto dmafail; 409 } 410 progress++; 411 isp->isp_rquest_dma = isp->isp_rqdmap->dm_segs[0].ds_addr; 412 413 len = ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp)); 414 if (bus_dmamem_alloc(isp->isp_dmatag, len, 0, 0, &rspseg, 1, &rsprs, 415 BUS_DMA_NOWAIT)) { 416 goto dmafail; 417 } 418 progress++; 419 if (bus_dmamem_map(isp->isp_dmatag, &rspseg, rsprs, len, 420 (void *)&isp->isp_result, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 421 goto dmafail; 422 } 423 progress++; 424 if (bus_dmamap_create(isp->isp_dmatag, len, 1, len, 1 << 24, 425 BUS_DMA_NOWAIT, &isp->isp_rsdmap) != 0) { 426 goto dmafail; 427 } 428 progress++; 429 if (bus_dmamap_load(isp->isp_dmatag, isp->isp_rsdmap, 430 isp->isp_result, len, NULL, BUS_DMA_NOWAIT) != 0) { 431 goto dmafail; 432 } 433 isp->isp_result_dma = isp->isp_rsdmap->dm_segs[0].ds_addr; 434 435 return (0); 436 437 dmafail: 438 isp_prt(isp, ISP_LOGERR, "Mailbox DMA Setup Failure"); 439 440 if (progress >= 8) { 441 bus_dmamap_unload(isp->isp_dmatag, isp->isp_rsdmap); 442 } 443 if (progress >= 7) { 444 bus_dmamap_destroy(isp->isp_dmatag, isp->isp_rsdmap); 445 } 446 if (progress >= 6) { 447 bus_dmamem_unmap(isp->isp_dmatag, 448 isp->isp_result, ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp))); 449 } 450 if (progress >= 5) { 451 bus_dmamem_free(isp->isp_dmatag, &rspseg, rsprs); 452 } 453 454 if (progress >= 4) { 455 bus_dmamap_unload(isp->isp_dmatag, isp->isp_rqdmap); 456 } 457 if (progress >= 3) { 458 bus_dmamap_destroy(isp->isp_dmatag, isp->isp_rqdmap); 459 } 460 if (progress >= 2) { 461 bus_dmamem_unmap(isp->isp_dmatag, 462 isp->isp_rquest, ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp))); 463 } 464 if (progress >= 1) { 465 bus_dmamem_free(isp->isp_dmatag, &reqseg, reqrs); 466 } 467 468 for (i = 0; i < isp->isp_maxcmds; i++) { 469 bus_dmamap_destroy(isp->isp_dmatag, sbc->sbus_dmamap[i]); 470 } 471 free(sbc->sbus_dmamap, M_DEVBUF); 472 free(isp->isp_xflist, M_DEVBUF); 473 isp->isp_xflist = NULL; 474 sbc->sbus_dmamap = NULL; 475 return (1); 476 } 477 478 /* 479 * Map a DMA request. 480 * We're guaranteed that rq->req_handle is a value from 1 to isp->isp_maxcmds. 481 */ 482 483 static int 484 isp_sbus_dmasetup(ispsoftc_t *isp, XS_T *xs, ispreq_t *rq, 485 uint32_t *nxtip, uint32_t optr) 486 { 487 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 488 bus_dmamap_t dmap; 489 ispreq_t *qep; 490 int error, cansleep = (xs->xs_control & XS_CTL_NOSLEEP) == 0; 491 int in = (xs->xs_control & XS_CTL_DATA_IN) != 0; 492 493 qep = (ispreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, isp->isp_reqidx); 494 if (xs->datalen == 0) { 495 rq->req_seg_count = 1; 496 goto mbxsync; 497 } 498 499 dmap = sbc->sbus_dmamap[isp_handle_index(rq->req_handle)]; 500 if (dmap->dm_nsegs != 0) { 501 panic("%s: DMA map already allocated", device_xname(&isp->isp_osinfo.dev)); 502 /* NOTREACHED */ 503 } 504 error = bus_dmamap_load(isp->isp_dmatag, dmap, xs->data, xs->datalen, 505 NULL, (cansleep ? BUS_DMA_WAITOK : BUS_DMA_NOWAIT) | 506 BUS_DMA_STREAMING); 507 if (error != 0) { 508 XS_SETERR(xs, HBA_BOTCH); 509 if (error == EAGAIN || error == ENOMEM) 510 return (CMD_EAGAIN); 511 else 512 return (CMD_COMPLETE); 513 } 514 515 bus_dmamap_sync(isp->isp_dmatag, dmap, 0, xs->datalen, 516 in? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 517 518 if (in) { 519 rq->req_flags |= REQFLAG_DATA_IN; 520 } else { 521 rq->req_flags |= REQFLAG_DATA_OUT; 522 } 523 524 if (XS_CDBLEN(xs) > 12) { 525 uint32_t onxti; 526 ispcontreq_t local, *crq = &local, *cqe; 527 528 onxti = *nxtip; 529 cqe = (ispcontreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, onxti); 530 *nxtip = ISP_NXT_QENTRY(onxti, RQUEST_QUEUE_LEN(isp)); 531 if (*nxtip == optr) { 532 isp_prt(isp, ISP_LOGDEBUG0, "Request Queue Overflow++"); 533 bus_dmamap_unload(isp->isp_dmatag, dmap); 534 XS_SETERR(xs, HBA_BOTCH); 535 return (CMD_EAGAIN); 536 } 537 rq->req_seg_count = 2; 538 MEMZERO((void *)crq, sizeof (*crq)); 539 crq->req_header.rqs_entry_count = 1; 540 crq->req_header.rqs_entry_type = RQSTYPE_DATASEG; 541 crq->req_dataseg[0].ds_count = xs->datalen; 542 crq->req_dataseg[0].ds_base = dmap->dm_segs[0].ds_addr; 543 isp_put_cont_req(isp, crq, cqe); 544 MEMORYBARRIER(isp, SYNC_REQUEST, onxti, QENTRY_LEN); 545 } else { 546 rq->req_seg_count = 1; 547 rq->req_dataseg[0].ds_count = xs->datalen; 548 rq->req_dataseg[0].ds_base = dmap->dm_segs[0].ds_addr; 549 } 550 551 mbxsync: 552 if (XS_CDBLEN(xs) > 12) { 553 isp_put_extended_request(isp, 554 (ispextreq_t *)rq, (ispextreq_t *) qep); 555 } else { 556 isp_put_request(isp, rq, qep); 557 } 558 return (CMD_QUEUED); 559 } 560 561 static void 562 isp_sbus_dmateardown(ispsoftc_t *isp, XS_T *xs, uint32_t handle) 563 { 564 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 565 bus_dmamap_t dmap; 566 567 dmap = sbc->sbus_dmamap[isp_handle_index(handle)]; 568 569 if (dmap->dm_nsegs == 0) { 570 panic("%s: DMA map not already allocated", device_xname(&isp->isp_osinfo.dev)); 571 /* NOTREACHED */ 572 } 573 bus_dmamap_sync(isp->isp_dmatag, dmap, 0, 574 xs->datalen, (xs->xs_control & XS_CTL_DATA_IN)? 575 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 576 bus_dmamap_unload(isp->isp_dmatag, dmap); 577 } 578
Indexes created Wed Oct 22 13:09:56 GMT 2025