1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #include <sys/scsi/scsi.h> 28 #include <sys/vtrace.h> 29 30 31 #define A_TO_TRAN(ap) ((ap)->a_hba_tran) 32 #define P_TO_TRAN(pkt) ((pkt)->pkt_address.a_hba_tran) 33 #define P_TO_ADDR(pkt) (&((pkt)->pkt_address)) 34 35 /* 36 * Callback id 37 */ 38 uintptr_t scsi_callback_id = 0; 39 40 extern ddi_dma_attr_t scsi_alloc_attr; 41 42 struct buf * 43 scsi_alloc_consistent_buf(struct scsi_address *ap, 44 struct buf *in_bp, size_t datalen, uint_t bflags, 45 int (*callback)(caddr_t), caddr_t callback_arg) 46 { 47 dev_info_t *pdip; 48 struct buf *bp; 49 int kmflag; 50 size_t rlen; 51 52 TRACE_0(TR_FAC_SCSI_RES, TR_SCSI_ALLOC_CONSISTENT_BUF_START, 53 "scsi_alloc_consistent_buf_start"); 54 55 if (!in_bp) { 56 kmflag = (callback == SLEEP_FUNC) ? KM_SLEEP : KM_NOSLEEP; 57 if ((bp = getrbuf(kmflag)) == NULL) { 58 goto no_resource; 59 } 60 } else { 61 bp = in_bp; 62 63 /* we are establishing a new buffer memory association */ 64 bp->b_flags &= ~(B_PAGEIO | B_PHYS | B_REMAPPED | B_SHADOW); 65 bp->b_proc = NULL; 66 bp->b_pages = NULL; 67 bp->b_shadow = NULL; 68 } 69 70 /* limit bits that can be set by bflags argument */ 71 ASSERT(!(bflags & ~(B_READ | B_WRITE))); 72 bflags &= (B_READ | B_WRITE); 73 bp->b_un.b_addr = 0; 74 75 if (datalen) { 76 pdip = (A_TO_TRAN(ap))->tran_hba_dip; 77 78 /* 79 * use i_ddi_mem_alloc() for now until we have an interface to 80 * allocate memory for DMA which doesn't require a DMA handle. 81 */ 82 while (i_ddi_mem_alloc(pdip, &scsi_alloc_attr, datalen, 83 ((callback == SLEEP_FUNC) ? 1 : 0), 0, NULL, 84 &bp->b_un.b_addr, &rlen, NULL) != DDI_SUCCESS) { 85 if (callback == SLEEP_FUNC) { 86 delay(drv_usectohz(10000)); 87 } else { 88 if (!in_bp) 89 freerbuf(bp); 90 goto no_resource; 91 } 92 } 93 bp->b_flags |= bflags; 94 } 95 bp->b_bcount = datalen; 96 bp->b_resid = 0; 97 98 TRACE_0(TR_FAC_SCSI_RES, TR_SCSI_ALLOC_CONSISTENT_BUF_END, 99 "scsi_alloc_consistent_buf_end"); 100 return (bp); 101 102 no_resource: 103 104 if (callback != NULL_FUNC && callback != SLEEP_FUNC) { 105 ddi_set_callback(callback, callback_arg, 106 &scsi_callback_id); 107 } 108 TRACE_0(TR_FAC_SCSI_RES, 109 TR_SCSI_ALLOC_CONSISTENT_BUF_RETURN1_END, 110 "scsi_alloc_consistent_buf_end (return1)"); 111 return (NULL); 112 } 113 114 void 115 scsi_free_consistent_buf(struct buf *bp) 116 { 117 TRACE_0(TR_FAC_SCSI_RES, TR_SCSI_FREE_CONSISTENT_BUF_START, 118 "scsi_free_consistent_buf_start"); 119 if (!bp) 120 return; 121 if (bp->b_un.b_addr) 122 i_ddi_mem_free((caddr_t)bp->b_un.b_addr, NULL); 123 freerbuf(bp); 124 if (scsi_callback_id != 0) { 125 ddi_run_callback(&scsi_callback_id); 126 } 127 TRACE_0(TR_FAC_SCSI_RES, TR_SCSI_FREE_CONSISTENT_BUF_END, 128 "scsi_free_consistent_buf_end"); 129 } 130 131 void 132 scsi_dmafree_attr(struct scsi_pkt *pktp) 133 { 134 struct scsi_pkt_cache_wrapper *pktw = 135 (struct scsi_pkt_cache_wrapper *)pktp; 136 137 if (pktw->pcw_flags & PCW_BOUND) { 138 if (ddi_dma_unbind_handle(pktp->pkt_handle) != 139 DDI_SUCCESS) 140 cmn_err(CE_WARN, "scsi_dmafree_attr: " 141 "unbind handle failed"); 142 pktw->pcw_flags &= ~PCW_BOUND; 143 } 144 pktp->pkt_numcookies = 0; 145 pktw->pcw_totalwin = 0; 146 } 147 148 struct buf * 149 scsi_pkt2bp(struct scsi_pkt *pkt) 150 { 151 return (((struct scsi_pkt_cache_wrapper *)pkt)->pcw_bp); 152 } 153 154 int 155 scsi_dma_buf_bind_attr(struct scsi_pkt_cache_wrapper *pktw, 156 struct buf *bp, 157 int dma_flags, 158 int (*callback)(), 159 caddr_t arg) 160 { 161 struct scsi_pkt *pktp = &(pktw->pcw_pkt); 162 int status; 163 164 /* 165 * First time, need to establish the handle. 166 */ 167 168 ASSERT(pktp->pkt_numcookies == 0); 169 ASSERT(pktw->pcw_totalwin == 0); 170 171 status = ddi_dma_buf_bind_handle(pktp->pkt_handle, bp, dma_flags, 172 callback, arg, &pktw->pcw_cookie, 173 &pktp->pkt_numcookies); 174 175 switch (status) { 176 case DDI_DMA_MAPPED: 177 pktw->pcw_totalwin = 1; 178 break; 179 180 case DDI_DMA_PARTIAL_MAP: 181 /* enable first call to ddi_dma_getwin */ 182 if (ddi_dma_numwin(pktp->pkt_handle, 183 &pktw->pcw_totalwin) != DDI_SUCCESS) { 184 bp->b_error = 0; 185 return (0); 186 } 187 break; 188 189 case DDI_DMA_NORESOURCES: 190 bp->b_error = 0; 191 return (0); 192 193 case DDI_DMA_TOOBIG: 194 bioerror(bp, EINVAL); 195 return (0); 196 197 case DDI_DMA_NOMAPPING: 198 case DDI_DMA_INUSE: 199 default: 200 bioerror(bp, EFAULT); 201 return (0); 202 } 203 204 /* initialize the loop controls for scsi_dmaget_attr() */ 205 pktw->pcw_curwin = 0; 206 pktw->pcw_total_xfer = 0; 207 pktp->pkt_dma_flags = dma_flags; 208 return (1); 209 } 210 211 #if defined(_DMA_USES_PHYSADDR) 212 int 213 scsi_dmaget_attr(struct scsi_pkt_cache_wrapper *pktw) 214 { 215 struct scsi_pkt *pktp = &(pktw->pcw_pkt); 216 217 int status; 218 int num_segs = 0; 219 ddi_dma_impl_t *hp = (ddi_dma_impl_t *)pktp->pkt_handle; 220 ddi_dma_cookie_t *cp; 221 222 if (pktw->pcw_curwin != 0) { 223 ddi_dma_cookie_t cookie; 224 225 /* 226 * start the next window, and get its first cookie 227 */ 228 status = ddi_dma_getwin(pktp->pkt_handle, 229 pktw->pcw_curwin, &pktp->pkt_dma_offset, 230 &pktp->pkt_dma_len, &cookie, 231 &pktp->pkt_numcookies); 232 if (status != DDI_SUCCESS) 233 return (0); 234 } 235 236 /* 237 * start the Scatter/Gather loop 238 */ 239 cp = hp->dmai_cookie - 1; 240 pktp->pkt_dma_len = 0; 241 for (;;) { 242 243 /* take care of the loop-bookkeeping */ 244 pktp->pkt_dma_len += cp->dmac_size; 245 num_segs++; 246 /* 247 * if this was the last cookie in the current window 248 * set the loop controls start the next window and 249 * exit so the HBA can do this partial transfer 250 */ 251 if (num_segs >= pktp->pkt_numcookies) { 252 pktw->pcw_curwin++; 253 break; 254 } 255 256 cp++; 257 } 258 pktw->pcw_total_xfer += pktp->pkt_dma_len; 259 pktp->pkt_cookies = hp->dmai_cookie - 1; 260 hp->dmai_cookie = cp; 261 262 return (1); 263 } 264 #endif 265 266 void scsi_free_cache_pkt(struct scsi_address *, struct scsi_pkt *); 267 268 struct scsi_pkt * 269 scsi_init_cache_pkt(struct scsi_address *ap, struct scsi_pkt *in_pktp, 270 struct buf *bp, int cmdlen, int statuslen, int pplen, 271 int flags, int (*callback)(caddr_t), caddr_t callback_arg) 272 { 273 struct scsi_pkt_cache_wrapper *pktw; 274 scsi_hba_tran_t *tranp = ap->a_hba_tran; 275 int (*func)(caddr_t); 276 277 func = (callback == SLEEP_FUNC) ? SLEEP_FUNC : NULL_FUNC; 278 279 if (in_pktp == NULL) { 280 int kf; 281 282 if (callback == SLEEP_FUNC) 283 kf = KM_SLEEP; 284 else 285 kf = KM_NOSLEEP; 286 /* 287 * By using kmem_cache_alloc(), the layout of the 288 * scsi_pkt, scsi_pkt_cache_wrapper, hba private data, 289 * cdb, tgt driver private data, and status block is 290 * as below. 291 * 292 * This is a piece of contiguous memory starting from 293 * the first structure field scsi_pkt in the struct 294 * scsi_pkt_cache_wrapper, followed by the hba private 295 * data, pkt_cdbp, the tgt driver private data and 296 * pkt_scbp. 297 * 298 * |----------------------------|---------------------> 299 * | struct scsi_pkt | struct 300 * | ...... |scsi_pkt_cache_wrapper 301 * | pcw_flags | 302 * |----------------------------|<--------------------- 303 * | hba private data |tranp->tran_hba_len 304 * |----------------------------| 305 * | pkt_cdbp |DEFAULT_CDBLEN 306 * |----------------------------| 307 * | tgt private data |DEFAULT_PRIVLEN 308 * |----------------------------| 309 * | pkt_scbp |DEFAULT_SCBLEN 310 * |----------------------------| 311 * 312 * If the actual data length of the cdb, or the tgt 313 * driver private data, or the status block is bigger 314 * than the default data length, kmem_alloc() will be 315 * called to get extra space. 316 */ 317 pktw = kmem_cache_alloc(tranp->tran_pkt_cache_ptr, 318 kf); 319 if (pktw == NULL) 320 goto fail1; 321 322 pktw->pcw_flags = 0; 323 in_pktp = &(pktw->pcw_pkt); 324 in_pktp->pkt_address = *ap; 325 326 /* 327 * target drivers should initialize pkt_comp and 328 * pkt_time, but sometimes they don't so initialize 329 * them here to be safe. 330 */ 331 in_pktp->pkt_flags = 0; 332 in_pktp->pkt_time = 0; 333 in_pktp->pkt_resid = 0; 334 in_pktp->pkt_state = 0; 335 in_pktp->pkt_statistics = 0; 336 in_pktp->pkt_reason = 0; 337 in_pktp->pkt_dma_offset = 0; 338 in_pktp->pkt_dma_len = 0; 339 in_pktp->pkt_dma_flags = 0; 340 in_pktp->pkt_path_instance = 0; 341 ASSERT(in_pktp->pkt_numcookies == 0); 342 pktw->pcw_curwin = 0; 343 pktw->pcw_totalwin = 0; 344 pktw->pcw_total_xfer = 0; 345 346 in_pktp->pkt_cdblen = cmdlen; 347 if ((tranp->tran_hba_flags & SCSI_HBA_TRAN_CDB) && 348 (cmdlen > DEFAULT_CDBLEN)) { 349 pktw->pcw_flags |= PCW_NEED_EXT_CDB; 350 in_pktp->pkt_cdbp = kmem_alloc(cmdlen, kf); 351 if (in_pktp->pkt_cdbp == NULL) 352 goto fail2; 353 } 354 in_pktp->pkt_tgtlen = pplen; 355 if (pplen > DEFAULT_PRIVLEN) { 356 pktw->pcw_flags |= PCW_NEED_EXT_TGT; 357 in_pktp->pkt_private = kmem_alloc(pplen, kf); 358 if (in_pktp->pkt_private == NULL) 359 goto fail3; 360 } 361 in_pktp->pkt_scblen = statuslen; 362 if ((tranp->tran_hba_flags & SCSI_HBA_TRAN_SCB) && 363 (statuslen > DEFAULT_SCBLEN)) { 364 pktw->pcw_flags |= PCW_NEED_EXT_SCB; 365 in_pktp->pkt_scbp = kmem_alloc(statuslen, kf); 366 if (in_pktp->pkt_scbp == NULL) 367 goto fail4; 368 } 369 if ((*tranp->tran_setup_pkt) (in_pktp, 370 func, NULL) == -1) { 371 goto fail5; 372 } 373 if (cmdlen) 374 bzero((void *)in_pktp->pkt_cdbp, cmdlen); 375 if (pplen) 376 bzero((void *)in_pktp->pkt_private, pplen); 377 if (statuslen) 378 bzero((void *)in_pktp->pkt_scbp, statuslen); 379 } else 380 pktw = (struct scsi_pkt_cache_wrapper *)in_pktp; 381 382 if (bp && bp->b_bcount) { 383 384 int dma_flags = 0; 385 386 /* 387 * we need to transfer data, so we alloc dma resources 388 * for this packet 389 */ 390 /*CONSTCOND*/ 391 ASSERT(SLEEP_FUNC == DDI_DMA_SLEEP); 392 /*CONSTCOND*/ 393 ASSERT(NULL_FUNC == DDI_DMA_DONTWAIT); 394 395 #if defined(_DMA_USES_PHYSADDR) 396 /* 397 * with an IOMMU we map everything, so we don't 398 * need to bother with this 399 */ 400 if (tranp->tran_dma_attr.dma_attr_granular != 401 pktw->pcw_granular) { 402 403 ddi_dma_free_handle(&in_pktp->pkt_handle); 404 if (ddi_dma_alloc_handle(tranp->tran_hba_dip, 405 &tranp->tran_dma_attr, 406 func, NULL, 407 &in_pktp->pkt_handle) != DDI_SUCCESS) { 408 409 in_pktp->pkt_handle = NULL; 410 return (NULL); 411 } 412 pktw->pcw_granular = 413 tranp->tran_dma_attr.dma_attr_granular; 414 } 415 #endif 416 417 if (in_pktp->pkt_numcookies == 0) { 418 pktw->pcw_bp = bp; 419 /* 420 * set dma flags; the "read" case must be first 421 * since B_WRITE isn't always be set for writes. 422 */ 423 if (bp->b_flags & B_READ) { 424 dma_flags |= DDI_DMA_READ; 425 } else { 426 dma_flags |= DDI_DMA_WRITE; 427 } 428 if (flags & PKT_CONSISTENT) 429 dma_flags |= DDI_DMA_CONSISTENT; 430 if (flags & PKT_DMA_PARTIAL) 431 dma_flags |= DDI_DMA_PARTIAL; 432 433 #if defined(__sparc) 434 /* 435 * workaround for byte hole issue on psycho and 436 * schizo pre 2.1 437 */ 438 if ((bp->b_flags & B_READ) && ((bp->b_flags & 439 (B_PAGEIO|B_REMAPPED)) != B_PAGEIO) && 440 (((uintptr_t)bp->b_un.b_addr & 0x7) || 441 ((uintptr_t)bp->b_bcount & 0x7))) { 442 dma_flags |= DDI_DMA_CONSISTENT; 443 } 444 #endif 445 if (!scsi_dma_buf_bind_attr(pktw, bp, 446 dma_flags, callback, callback_arg)) { 447 return (NULL); 448 } else { 449 pktw->pcw_flags |= PCW_BOUND; 450 } 451 } 452 453 #if defined(_DMA_USES_PHYSADDR) 454 if (!scsi_dmaget_attr(pktw)) { 455 scsi_dmafree_attr(in_pktp); 456 goto fail5; 457 } 458 #else 459 in_pktp->pkt_cookies = &pktw->pcw_cookie; 460 in_pktp->pkt_dma_len = pktw->pcw_cookie.dmac_size; 461 pktw->pcw_total_xfer += in_pktp->pkt_dma_len; 462 #endif 463 ASSERT(in_pktp->pkt_numcookies <= 464 tranp->tran_dma_attr.dma_attr_sgllen); 465 ASSERT(pktw->pcw_total_xfer <= bp->b_bcount); 466 in_pktp->pkt_resid = bp->b_bcount - 467 pktw->pcw_total_xfer; 468 469 ASSERT((in_pktp->pkt_resid % pktw->pcw_granular) == 470 0); 471 } else { 472 /* !bp or no b_bcount */ 473 in_pktp->pkt_resid = 0; 474 } 475 return (in_pktp); 476 477 fail5: 478 if (pktw->pcw_flags & PCW_NEED_EXT_SCB) { 479 kmem_free(in_pktp->pkt_scbp, statuslen); 480 in_pktp->pkt_scbp = (opaque_t)((char *)in_pktp + 481 tranp->tran_hba_len + DEFAULT_PRIVLEN + 482 sizeof (struct scsi_pkt_cache_wrapper)); 483 if ((A_TO_TRAN(ap))->tran_hba_flags & SCSI_HBA_TRAN_CDB) 484 in_pktp->pkt_scbp = (opaque_t)((in_pktp->pkt_scbp) + 485 DEFAULT_CDBLEN); 486 in_pktp->pkt_scblen = 0; 487 } 488 fail4: 489 if (pktw->pcw_flags & PCW_NEED_EXT_TGT) { 490 kmem_free(in_pktp->pkt_private, pplen); 491 in_pktp->pkt_tgtlen = 0; 492 in_pktp->pkt_private = NULL; 493 } 494 fail3: 495 if (pktw->pcw_flags & PCW_NEED_EXT_CDB) { 496 kmem_free(in_pktp->pkt_cdbp, cmdlen); 497 in_pktp->pkt_cdbp = (opaque_t)((char *)in_pktp + 498 tranp->tran_hba_len + 499 sizeof (struct scsi_pkt_cache_wrapper)); 500 in_pktp->pkt_cdblen = 0; 501 } 502 pktw->pcw_flags &= 503 ~(PCW_NEED_EXT_CDB|PCW_NEED_EXT_TGT|PCW_NEED_EXT_SCB); 504 fail2: 505 kmem_cache_free(tranp->tran_pkt_cache_ptr, pktw); 506 fail1: 507 if (callback != NULL_FUNC && callback != SLEEP_FUNC) { 508 ddi_set_callback(callback, callback_arg, 509 &scsi_callback_id); 510 } 511 512 return (NULL); 513 } 514 515 void 516 scsi_free_cache_pkt(struct scsi_address *ap, struct scsi_pkt *pktp) 517 { 518 struct scsi_pkt_cache_wrapper *pktw; 519 520 (*A_TO_TRAN(ap)->tran_teardown_pkt)(pktp); 521 pktw = (struct scsi_pkt_cache_wrapper *)pktp; 522 if (pktw->pcw_flags & PCW_BOUND) 523 scsi_dmafree_attr(pktp); 524 525 /* 526 * if we allocated memory for anything that wouldn't fit, free 527 * the memory and restore the pointers 528 */ 529 if (pktw->pcw_flags & PCW_NEED_EXT_SCB) { 530 kmem_free(pktp->pkt_scbp, pktp->pkt_scblen); 531 pktp->pkt_scbp = (opaque_t)((char *)pktp + 532 (A_TO_TRAN(ap))->tran_hba_len + 533 DEFAULT_PRIVLEN + sizeof (struct scsi_pkt_cache_wrapper)); 534 if ((A_TO_TRAN(ap))->tran_hba_flags & SCSI_HBA_TRAN_CDB) 535 pktp->pkt_scbp = (opaque_t)((pktp->pkt_scbp) + 536 DEFAULT_CDBLEN); 537 pktp->pkt_scblen = 0; 538 } 539 if (pktw->pcw_flags & PCW_NEED_EXT_TGT) { 540 kmem_free(pktp->pkt_private, pktp->pkt_tgtlen); 541 pktp->pkt_tgtlen = 0; 542 pktp->pkt_private = NULL; 543 } 544 if (pktw->pcw_flags & PCW_NEED_EXT_CDB) { 545 kmem_free(pktp->pkt_cdbp, pktp->pkt_cdblen); 546 pktp->pkt_cdbp = (opaque_t)((char *)pktp + 547 (A_TO_TRAN(ap))->tran_hba_len + 548 sizeof (struct scsi_pkt_cache_wrapper)); 549 pktp->pkt_cdblen = 0; 550 } 551 pktw->pcw_flags &= 552 ~(PCW_NEED_EXT_CDB|PCW_NEED_EXT_TGT|PCW_NEED_EXT_SCB); 553 kmem_cache_free(A_TO_TRAN(ap)->tran_pkt_cache_ptr, pktw); 554 555 if (scsi_callback_id != 0) { 556 ddi_run_callback(&scsi_callback_id); 557 } 558 559 } 560 561 562 struct scsi_pkt * 563 scsi_init_pkt(struct scsi_address *ap, struct scsi_pkt *in_pktp, 564 struct buf *bp, int cmdlen, int statuslen, int pplen, 565 int flags, int (*callback)(caddr_t), caddr_t callback_arg) 566 { 567 struct scsi_pkt *pktp; 568 scsi_hba_tran_t *tranp = ap->a_hba_tran; 569 int (*func)(caddr_t); 570 571 TRACE_5(TR_FAC_SCSI_RES, TR_SCSI_INIT_PKT_START, 572 "scsi_init_pkt_start: addr %p in_pktp %p cmdlen %d statuslen %d pplen %d", 573 ap, in_pktp, cmdlen, statuslen, pplen); 574 575 #if defined(__i386) || defined(__amd64) 576 if (flags & PKT_CONSISTENT_OLD) { 577 flags &= ~PKT_CONSISTENT_OLD; 578 flags |= PKT_CONSISTENT; 579 } 580 #endif 581 582 func = (callback == SLEEP_FUNC) ? SLEEP_FUNC : NULL_FUNC; 583 584 pktp = (*tranp->tran_init_pkt) (ap, in_pktp, bp, cmdlen, 585 statuslen, pplen, flags, func, NULL); 586 if (pktp == NULL) { 587 if (callback != NULL_FUNC && callback != SLEEP_FUNC) { 588 ddi_set_callback(callback, callback_arg, 589 &scsi_callback_id); 590 } 591 } 592 593 TRACE_1(TR_FAC_SCSI_RES, TR_SCSI_INIT_PKT_END, 594 "scsi_init_pkt_end: pktp %p", pktp); 595 return (pktp); 596 } 597 598 void 599 scsi_destroy_pkt(struct scsi_pkt *pkt) 600 { 601 struct scsi_address *ap = P_TO_ADDR(pkt); 602 603 TRACE_1(TR_FAC_SCSI_RES, TR_SCSI_DESTROY_PKT_START, 604 "scsi_destroy_pkt_start: pkt %p", pkt); 605 606 (*A_TO_TRAN(ap)->tran_destroy_pkt)(ap, pkt); 607 608 if (scsi_callback_id != 0) { 609 ddi_run_callback(&scsi_callback_id); 610 } 611 612 TRACE_0(TR_FAC_SCSI_RES, TR_SCSI_DESTROY_PKT_END, 613 "scsi_destroy_pkt_end"); 614 } 615 616 617 /* 618 * Generic Resource Allocation Routines 619 */ 620 621 struct scsi_pkt * 622 scsi_resalloc(struct scsi_address *ap, int cmdlen, int statuslen, 623 opaque_t dmatoken, int (*callback)()) 624 { 625 register struct scsi_pkt *pkt; 626 register scsi_hba_tran_t *tranp = ap->a_hba_tran; 627 register int (*func)(caddr_t); 628 629 func = (callback == SLEEP_FUNC) ? SLEEP_FUNC : NULL_FUNC; 630 631 pkt = (*tranp->tran_init_pkt) (ap, NULL, (struct buf *)dmatoken, 632 cmdlen, statuslen, 0, 0, func, NULL); 633 if (pkt == NULL) { 634 if (callback != NULL_FUNC && callback != SLEEP_FUNC) { 635 ddi_set_callback(callback, NULL, &scsi_callback_id); 636 } 637 } 638 639 return (pkt); 640 } 641 642 struct scsi_pkt * 643 scsi_pktalloc(struct scsi_address *ap, int cmdlen, int statuslen, 644 int (*callback)()) 645 { 646 struct scsi_pkt *pkt; 647 struct scsi_hba_tran *tran = ap->a_hba_tran; 648 register int (*func)(caddr_t); 649 650 func = (callback == SLEEP_FUNC) ? SLEEP_FUNC : NULL_FUNC; 651 652 pkt = (*tran->tran_init_pkt) (ap, NULL, NULL, cmdlen, 653 statuslen, 0, 0, func, NULL); 654 if (pkt == NULL) { 655 if (callback != NULL_FUNC && callback != SLEEP_FUNC) { 656 ddi_set_callback(callback, NULL, &scsi_callback_id); 657 } 658 } 659 660 return (pkt); 661 } 662 663 struct scsi_pkt * 664 scsi_dmaget(struct scsi_pkt *pkt, opaque_t dmatoken, int (*callback)()) 665 { 666 struct scsi_pkt *new_pkt; 667 register int (*func)(caddr_t); 668 669 func = (callback == SLEEP_FUNC) ? SLEEP_FUNC : NULL_FUNC; 670 671 new_pkt = (*P_TO_TRAN(pkt)->tran_init_pkt) (&pkt->pkt_address, 672 pkt, (struct buf *)dmatoken, 673 0, 0, 0, 0, func, NULL); 674 ASSERT(new_pkt == pkt || new_pkt == NULL); 675 if (new_pkt == NULL) { 676 if (callback != NULL_FUNC && callback != SLEEP_FUNC) { 677 ddi_set_callback(callback, NULL, &scsi_callback_id); 678 } 679 } 680 681 return (new_pkt); 682 } 683 684 685 /* 686 * Generic Resource Deallocation Routines 687 */ 688 689 void 690 scsi_dmafree(struct scsi_pkt *pkt) 691 { 692 register struct scsi_address *ap = P_TO_ADDR(pkt); 693 694 (*A_TO_TRAN(ap)->tran_dmafree)(ap, pkt); 695 696 if (scsi_callback_id != 0) { 697 ddi_run_callback(&scsi_callback_id); 698 } 699 } 700 701 /*ARGSUSED*/ 702 void 703 scsi_cache_dmafree(struct scsi_address *ap, struct scsi_pkt *pkt) 704 { 705 ASSERT(pkt->pkt_numcookies == 0 || 706 ((struct scsi_pkt_cache_wrapper *)pkt)->pcw_flags & PCW_BOUND); 707 ASSERT(pkt->pkt_handle != NULL); 708 scsi_dmafree_attr(pkt); 709 710 if (scsi_callback_id != 0) { 711 ddi_run_callback(&scsi_callback_id); 712 } 713 } 714 715 void 716 scsi_sync_pkt(struct scsi_pkt *pkt) 717 { 718 register struct scsi_address *ap = P_TO_ADDR(pkt); 719 720 if (pkt->pkt_state & STATE_XFERRED_DATA) 721 (*A_TO_TRAN(ap)->tran_sync_pkt)(ap, pkt); 722 } 723 724 /*ARGSUSED*/ 725 void 726 scsi_sync_cache_pkt(struct scsi_address *ap, struct scsi_pkt *pkt) 727 { 728 if (pkt->pkt_handle && 729 (pkt->pkt_dma_flags & (DDI_DMA_WRITE | DDI_DMA_READ))) { 730 (void) ddi_dma_sync(pkt->pkt_handle, 731 pkt->pkt_dma_offset, pkt->pkt_dma_len, 732 (pkt->pkt_dma_flags & DDI_DMA_WRITE) ? 733 DDI_DMA_SYNC_FORDEV : DDI_DMA_SYNC_FORCPU); 734 } 735 } 736 737 void 738 scsi_resfree(struct scsi_pkt *pkt) 739 { 740 register struct scsi_address *ap = P_TO_ADDR(pkt); 741 (*A_TO_TRAN(ap)->tran_destroy_pkt)(ap, pkt); 742 743 if (scsi_callback_id != 0) { 744 ddi_run_callback(&scsi_callback_id); 745 } 746 } 747