isp_sbus.c revision 1.67.2.1
1 /* $NetBSD: isp_sbus.c,v 1.67.2.1 2007/05/27 14:30:28 ad 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 1.67.2.1 2007/05/27 14:30:28 ad 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 <machine/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(struct ispsoftc *); 51 static void isp_sbus_reset1(struct ispsoftc *); 52 static int isp_sbus_intr(void *); 53 static int 54 isp_sbus_rd_isr(struct ispsoftc *, uint32_t *, uint16_t *, uint16_t *); 55 static uint32_t isp_sbus_rd_reg(struct ispsoftc *, int); 56 static void isp_sbus_wr_reg (struct ispsoftc *, int, uint32_t); 57 static int isp_sbus_mbxdma(struct ispsoftc *); 58 static int isp_sbus_dmasetup(struct ispsoftc *, XS_T *, ispreq_t *, uint32_t *, 59 uint32_t); 60 static void isp_sbus_dmateardown(struct ispsoftc *, 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 struct ispsoftc sbus_isp; 85 struct sbusdev sbus_sd; 86 sdparam sbus_dev; 87 bus_space_tag_t sbus_bustag; 88 bus_space_handle_t sbus_reg; 89 int sbus_node; 90 int sbus_pri; 91 struct ispmdvec sbus_mdvec; 92 bus_dmamap_t *sbus_dmamap; 93 int16_t sbus_poff[_NREG_BLKS]; 94 }; 95 96 97 static int isp_match(struct device *, struct cfdata *, void *); 98 static void isp_sbus_attach(struct device *, struct device *, void *); 99 CFATTACH_DECL(isp_sbus, sizeof (struct isp_sbussoftc), 100 isp_match, isp_sbus_attach, NULL, NULL); 101 102 static int 103 isp_match(struct device *parent, struct cfdata *cf, void *aux) 104 { 105 int rv; 106 #ifdef DEBUG 107 static int oneshot = 1; 108 #endif 109 struct sbus_attach_args *sa = aux; 110 111 rv = (strcmp(cf->cf_name, sa->sa_name) == 0 || 112 strcmp("PTI,ptisp", sa->sa_name) == 0 || 113 strcmp("ptisp", sa->sa_name) == 0 || 114 strcmp("SUNW,isp", sa->sa_name) == 0 || 115 strcmp("QLGC,isp", sa->sa_name) == 0); 116 #ifdef DEBUG 117 if (rv && oneshot) { 118 oneshot = 0; 119 printf("Qlogic ISP Driver, NetBSD (sbus) Platform Version " 120 "%d.%d Core Version %d.%d\n", 121 ISP_PLATFORM_VERSION_MAJOR, ISP_PLATFORM_VERSION_MINOR, 122 ISP_CORE_VERSION_MAJOR, ISP_CORE_VERSION_MINOR); 123 } 124 #endif 125 return (rv); 126 } 127 128 129 static void 130 isp_sbus_attach(struct device *parent, struct device *self, void *aux) 131 { 132 int freq, ispburst, sbusburst; 133 struct sbus_attach_args *sa = aux; 134 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) self; 135 struct ispsoftc *isp = &sbc->sbus_isp; 136 137 printf(" for %s\n", sa->sa_name); 138 139 sbc->sbus_bustag = sa->sa_bustag; 140 if (sa->sa_nintr != 0) 141 sbc->sbus_pri = sa->sa_pri; 142 sbc->sbus_mdvec = mdvec; 143 144 if (sa->sa_npromvaddrs) { 145 sbus_promaddr_to_handle(sa->sa_bustag, 146 sa->sa_promvaddrs[0], &sbc->sbus_reg); 147 } else { 148 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, sa->sa_offset, 149 sa->sa_size, 0, &sbc->sbus_reg) != 0) { 150 printf("%s: cannot map registers\n", self->dv_xname); 151 return; 152 } 153 } 154 sbc->sbus_node = sa->sa_node; 155 156 freq = prom_getpropint(sa->sa_node, "clock-frequency", 0); 157 if (freq) { 158 /* 159 * Convert from HZ to MHz, rounding up. 160 */ 161 freq = (freq + 500000)/1000000; 162 #if 0 163 printf("%s: %d MHz\n", self->dv_xname, freq); 164 #endif 165 } 166 sbc->sbus_mdvec.dv_clock = freq; 167 168 /* 169 * Now figure out what the proper burst sizes, etc., to use. 170 * Unfortunately, there is no ddi_dma_burstsizes here which 171 * walks up the tree finding the limiting burst size node (if 172 * any). 173 */ 174 sbusburst = ((struct sbus_softc *)parent)->sc_burst; 175 if (sbusburst == 0) 176 sbusburst = SBUS_BURST_32 - 1; 177 ispburst = prom_getpropint(sa->sa_node, "burst-sizes", -1); 178 if (ispburst == -1) { 179 ispburst = sbusburst; 180 } 181 ispburst &= sbusburst; 182 ispburst &= ~(1 << 7); 183 ispburst &= ~(1 << 6); 184 sbc->sbus_mdvec.dv_conf1 = 0; 185 if (ispburst & (1 << 5)) { 186 sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_32; 187 } else if (ispburst & (1 << 4)) { 188 sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_16; 189 } else if (ispburst & (1 << 3)) { 190 sbc->sbus_mdvec.dv_conf1 = 191 BIU_SBUS_CONF1_BURST8 | BIU_SBUS_CONF1_FIFO_8; 192 } 193 if (sbc->sbus_mdvec.dv_conf1) { 194 sbc->sbus_mdvec.dv_conf1 |= BIU_BURST_ENABLE; 195 } 196 197 isp->isp_mdvec = &sbc->sbus_mdvec; 198 isp->isp_bustype = ISP_BT_SBUS; 199 isp->isp_type = ISP_HA_SCSI_UNKNOWN; 200 isp->isp_param = &sbc->sbus_dev; 201 isp->isp_dmatag = sa->sa_dmatag; 202 MEMZERO(isp->isp_param, sizeof (sdparam)); 203 204 sbc->sbus_poff[BIU_BLOCK >> _BLK_REG_SHFT] = BIU_REGS_OFF; 205 sbc->sbus_poff[MBOX_BLOCK >> _BLK_REG_SHFT] = SBUS_MBOX_REGS_OFF; 206 sbc->sbus_poff[SXP_BLOCK >> _BLK_REG_SHFT] = SBUS_SXP_REGS_OFF; 207 sbc->sbus_poff[RISC_BLOCK >> _BLK_REG_SHFT] = SBUS_RISC_REGS_OFF; 208 sbc->sbus_poff[DMA_BLOCK >> _BLK_REG_SHFT] = DMA_REGS_OFF; 209 210 /* Establish interrupt channel */ 211 bus_intr_establish(sbc->sbus_bustag, sbc->sbus_pri, IPL_BIO, 212 isp_sbus_intr, sbc); 213 sbus_establish(&sbc->sbus_sd, &sbc->sbus_isp.isp_osinfo._dev); 214 215 /* 216 * Set up logging levels. 217 */ 218 #ifdef ISP_LOGDEFAULT 219 isp->isp_dblev = ISP_LOGDEFAULT; 220 #else 221 isp->isp_dblev = ISP_LOGWARN|ISP_LOGERR; 222 if (bootverbose) 223 isp->isp_dblev |= ISP_LOGCONFIG|ISP_LOGINFO; 224 #ifdef SCSIDEBUG 225 isp->isp_dblev |= ISP_LOGDEBUG1|ISP_LOGDEBUG2; 226 #endif 227 #ifdef DEBUG 228 isp->isp_dblev |= ISP_LOGDEBUG0; 229 #endif 230 #endif 231 232 isp->isp_confopts = device_cfdata(self)->cf_flags; 233 isp->isp_role = ISP_DEFAULT_ROLES; 234 235 /* 236 * There's no tool on sparc to set NVRAM for ISPs, so ignore it. 237 */ 238 isp->isp_confopts |= ISP_CFG_NONVRAM; 239 240 /* 241 * Mark things if we're a PTI SBus adapter. 242 */ 243 if (strcmp("PTI,ptisp", sa->sa_name) == 0 || 244 strcmp("ptisp", sa->sa_name) == 0) { 245 SDPARAM(isp)->isp_ptisp = 1; 246 } 247 ISP_LOCK(isp); 248 isp_reset(isp); 249 if (isp->isp_state != ISP_RESETSTATE) { 250 ISP_UNLOCK(isp); 251 return; 252 } 253 ISP_ENABLE_INTS(isp); 254 isp_init(isp); 255 if (isp->isp_state != ISP_INITSTATE) { 256 isp_uninit(isp); 257 ISP_UNLOCK(isp); 258 return; 259 } 260 261 /* 262 * do generic attach. 263 */ 264 ISP_UNLOCK(isp); 265 isp_attach(isp); 266 if (isp->isp_state != ISP_RUNSTATE) { 267 ISP_LOCK(isp); 268 isp_uninit(isp); 269 ISP_UNLOCK(isp); 270 } 271 } 272 273 274 static void 275 isp_sbus_reset0(struct ispsoftc *isp) 276 { 277 ISP_DISABLE_INTS(isp); 278 } 279 280 static void 281 isp_sbus_reset1(struct ispsoftc *isp) 282 { 283 ISP_ENABLE_INTS(isp); 284 } 285 286 static int 287 isp_sbus_intr(void *arg) 288 { 289 uint32_t isr; 290 uint16_t sema, mbox; 291 struct ispsoftc *isp = arg; 292 293 if (ISP_READ_ISR(isp, &isr, &sema, &mbox) == 0) { 294 isp->isp_intbogus++; 295 return (0); 296 } else { 297 struct isp_sbussoftc *sbc = arg; 298 sbc->sbus_isp.isp_osinfo.onintstack = 1; 299 isp_intr(isp, isr, sema, mbox); 300 sbc->sbus_isp.isp_osinfo.onintstack = 0; 301 return (1); 302 } 303 } 304 305 #define IspVirt2Off(a, x) \ 306 (((struct isp_sbussoftc *)a)->sbus_poff[((x) & _BLK_REG_MASK) >> \ 307 _BLK_REG_SHFT] + ((x) & 0xff)) 308 309 #define BXR2(sbc, off) \ 310 bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, off) 311 312 static int 313 isp_sbus_rd_isr(struct ispsoftc *isp, uint32_t *isrp, 314 uint16_t *semap, uint16_t *mbp) 315 { 316 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 317 uint32_t isr; 318 uint16_t sema; 319 320 isr = BXR2(sbc, IspVirt2Off(isp, BIU_ISR)); 321 sema = BXR2(sbc, IspVirt2Off(isp, BIU_SEMA)); 322 isp_prt(isp, ISP_LOGDEBUG3, "ISR 0x%x SEMA 0x%x", isr, sema); 323 isr &= INT_PENDING_MASK(isp); 324 sema &= BIU_SEMA_LOCK; 325 if (isr == 0 && sema == 0) { 326 return (0); 327 } 328 *isrp = isr; 329 if ((*semap = sema) != 0) { 330 *mbp = BXR2(sbc, IspVirt2Off(isp, OUTMAILBOX0)); 331 } 332 return (1); 333 } 334 335 static uint32_t 336 isp_sbus_rd_reg(struct ispsoftc *isp, int regoff) 337 { 338 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 339 int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 340 offset += (regoff & 0xff); 341 return (bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, offset)); 342 } 343 344 static void 345 isp_sbus_wr_reg(struct ispsoftc *isp, int regoff, uint32_t val) 346 { 347 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 348 int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 349 offset += (regoff & 0xff); 350 bus_space_write_2(sbc->sbus_bustag, sbc->sbus_reg, offset, val); 351 } 352 353 static int 354 isp_sbus_mbxdma(struct ispsoftc *isp) 355 { 356 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 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 = isp->isp_maxcmds * sizeof (XS_T *); 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 MEMZERO(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(isp->isp_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(isp->isp_dmatag, 391 sbc->sbus_dmamap[i]); 392 } 393 free(isp->isp_xflist, M_DEVBUF); 394 free(sbc->sbus_dmamap, M_DEVBUF); 395 isp->isp_xflist = NULL; 396 sbc->sbus_dmamap = NULL; 397 return (1); 398 } 399 400 /* 401 * Allocate and map the request and response queues 402 */ 403 progress = 0; 404 len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); 405 if (bus_dmamem_alloc(isp->isp_dmatag, len, 0, 0, &reqseg, 1, &reqrs, 406 BUS_DMA_NOWAIT)) { 407 goto dmafail; 408 } 409 progress++; 410 if (bus_dmamem_map(isp->isp_dmatag, &reqseg, reqrs, len, 411 (void *)&isp->isp_rquest, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 412 goto dmafail; 413 } 414 progress++; 415 if (bus_dmamap_create(isp->isp_dmatag, len, 1, len, 0, BUS_DMA_NOWAIT, 416 &isp->isp_rqdmap) != 0) { 417 goto dmafail; 418 } 419 progress++; 420 if (bus_dmamap_load(isp->isp_dmatag, isp->isp_rqdmap, 421 isp->isp_rquest, len, NULL, BUS_DMA_NOWAIT) != 0) { 422 goto dmafail; 423 } 424 progress++; 425 isp->isp_rquest_dma = isp->isp_rqdmap->dm_segs[0].ds_addr; 426 427 len = ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp)); 428 if (bus_dmamem_alloc(isp->isp_dmatag, len, 0, 0, &rspseg, 1, &rsprs, 429 BUS_DMA_NOWAIT)) { 430 goto dmafail; 431 } 432 progress++; 433 if (bus_dmamem_map(isp->isp_dmatag, &rspseg, rsprs, len, 434 (void *)&isp->isp_result, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 435 goto dmafail; 436 } 437 progress++; 438 if (bus_dmamap_create(isp->isp_dmatag, len, 1, len, 0, BUS_DMA_NOWAIT, 439 &isp->isp_rsdmap) != 0) { 440 goto dmafail; 441 } 442 progress++; 443 if (bus_dmamap_load(isp->isp_dmatag, isp->isp_rsdmap, 444 isp->isp_result, len, NULL, BUS_DMA_NOWAIT) != 0) { 445 goto dmafail; 446 } 447 isp->isp_result_dma = isp->isp_rsdmap->dm_segs[0].ds_addr; 448 449 return (0); 450 451 dmafail: 452 isp_prt(isp, ISP_LOGERR, "Mailbox DMA Setup Failure"); 453 454 if (progress >= 8) { 455 bus_dmamap_unload(isp->isp_dmatag, isp->isp_rsdmap); 456 } 457 if (progress >= 7) { 458 bus_dmamap_destroy(isp->isp_dmatag, isp->isp_rsdmap); 459 } 460 if (progress >= 6) { 461 bus_dmamem_unmap(isp->isp_dmatag, 462 isp->isp_result, ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp))); 463 } 464 if (progress >= 5) { 465 bus_dmamem_free(isp->isp_dmatag, &rspseg, rsprs); 466 } 467 468 if (progress >= 4) { 469 bus_dmamap_unload(isp->isp_dmatag, isp->isp_rqdmap); 470 } 471 if (progress >= 3) { 472 bus_dmamap_destroy(isp->isp_dmatag, isp->isp_rqdmap); 473 } 474 if (progress >= 2) { 475 bus_dmamem_unmap(isp->isp_dmatag, 476 isp->isp_rquest, ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp))); 477 } 478 if (progress >= 1) { 479 bus_dmamem_free(isp->isp_dmatag, &reqseg, reqrs); 480 } 481 482 for (i = 0; i < isp->isp_maxcmds; i++) { 483 bus_dmamap_destroy(isp->isp_dmatag, sbc->sbus_dmamap[i]); 484 } 485 free(sbc->sbus_dmamap, M_DEVBUF); 486 free(isp->isp_xflist, M_DEVBUF); 487 isp->isp_xflist = NULL; 488 sbc->sbus_dmamap = NULL; 489 return (1); 490 } 491 492 /* 493 * Map a DMA request. 494 * We're guaranteed that rq->req_handle is a value from 1 to isp->isp_maxcmds. 495 */ 496 497 static int 498 isp_sbus_dmasetup(struct ispsoftc *isp, XS_T *xs, ispreq_t *rq, 499 uint32_t *nxtip, uint32_t optr) 500 { 501 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 502 bus_dmamap_t dmap; 503 ispreq_t *qep; 504 int error, cansleep = (xs->xs_control & XS_CTL_NOSLEEP) == 0; 505 int in = (xs->xs_control & XS_CTL_DATA_IN) != 0; 506 507 qep = (ispreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, isp->isp_reqidx); 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", isp->isp_name); 516 /* NOTREACHED */ 517 } 518 error = bus_dmamap_load(isp->isp_dmatag, dmap, xs->data, xs->datalen, 519 NULL, (cansleep ? BUS_DMA_WAITOK : BUS_DMA_NOWAIT) | 520 BUS_DMA_STREAMING); 521 if (error != 0) { 522 XS_SETERR(xs, HBA_BOTCH); 523 if (error == EAGAIN || error == ENOMEM) 524 return (CMD_EAGAIN); 525 else 526 return (CMD_COMPLETE); 527 } 528 529 bus_dmamap_sync(isp->isp_dmatag, dmap, 0, xs->datalen, 530 in? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 531 532 if (in) { 533 rq->req_flags |= REQFLAG_DATA_IN; 534 } else { 535 rq->req_flags |= REQFLAG_DATA_OUT; 536 } 537 538 if (XS_CDBLEN(xs) > 12) { 539 uint32_t onxti; 540 ispcontreq_t local, *crq = &local, *cqe; 541 542 onxti = *nxtip; 543 cqe = (ispcontreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, onxti); 544 *nxtip = ISP_NXT_QENTRY(onxti, RQUEST_QUEUE_LEN(isp)); 545 if (*nxtip == optr) { 546 isp_prt(isp, ISP_LOGDEBUG0, "Request Queue Overflow++"); 547 bus_dmamap_unload(isp->isp_dmatag, dmap); 548 XS_SETERR(xs, HBA_BOTCH); 549 return (CMD_EAGAIN); 550 } 551 rq->req_seg_count = 2; 552 MEMZERO((void *)crq, sizeof (*crq)); 553 crq->req_header.rqs_entry_count = 1; 554 crq->req_header.rqs_entry_type = RQSTYPE_DATASEG; 555 crq->req_dataseg[0].ds_count = xs->datalen; 556 crq->req_dataseg[0].ds_base = dmap->dm_segs[0].ds_addr; 557 isp_put_cont_req(isp, crq, cqe); 558 MEMORYBARRIER(isp, SYNC_REQUEST, onxti, QENTRY_LEN); 559 } else { 560 rq->req_seg_count = 1; 561 rq->req_dataseg[0].ds_count = xs->datalen; 562 rq->req_dataseg[0].ds_base = dmap->dm_segs[0].ds_addr; 563 } 564 565 mbxsync: 566 if (XS_CDBLEN(xs) > 12) { 567 isp_put_extended_request(isp, 568 (ispextreq_t *)rq, (ispextreq_t *) qep); 569 } else { 570 isp_put_request(isp, rq, qep); 571 } 572 return (CMD_QUEUED); 573 } 574 575 static void 576 isp_sbus_dmateardown(struct ispsoftc *isp, XS_T *xs, uint32_t handle) 577 { 578 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 579 bus_dmamap_t dmap; 580 581 dmap = sbc->sbus_dmamap[isp_handle_index(handle)]; 582 583 if (dmap->dm_nsegs == 0) { 584 panic("%s: DMA map not already allocated", isp->isp_name); 585 /* NOTREACHED */ 586 } 587 bus_dmamap_sync(isp->isp_dmatag, dmap, 0, 588 xs->datalen, (xs->xs_control & XS_CTL_DATA_IN)? 589 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 590 bus_dmamap_unload(isp->isp_dmatag, dmap); 591 } 592
Indexes created Tue Oct 21 19:09:51 GMT 2025