isp_sbus.c revision 1.40.2.5
1 /* $NetBSD: isp_sbus.c,v 1.40.2.5 2001/10/08 20:11:26 nathanw 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. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 47 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 48 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 49 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 50 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 51 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 52 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 53 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 54 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 55 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 56 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 57 * SUCH DAMAGE. 58 * 59 */ 60 61 #include <sys/param.h> 62 #include <sys/systm.h> 63 #include <sys/device.h> 64 #include <sys/kernel.h> 65 #include <sys/malloc.h> 66 #include <sys/queue.h> 67 68 #include <machine/bus.h> 69 #include <machine/intr.h> 70 #include <machine/autoconf.h> 71 72 #include <dev/ic/isp_netbsd.h> 73 #include <dev/microcode/isp/asm_sbus.h> 74 #include <dev/sbus/sbusvar.h> 75 #include <sys/reboot.h> 76 77 static int isp_sbus_intr(void *); 78 static int 79 isp_sbus_rd_isr(struct ispsoftc *, u_int16_t *, u_int16_t *, u_int16_t *); 80 static u_int16_t isp_sbus_rd_reg(struct ispsoftc *, int); 81 static void isp_sbus_wr_reg (struct ispsoftc *, int, u_int16_t); 82 static int isp_sbus_mbxdma(struct ispsoftc *); 83 static int isp_sbus_dmasetup(struct ispsoftc *, XS_T *, ispreq_t *, u_int16_t *, 84 u_int16_t); 85 static void isp_sbus_dmateardown(struct ispsoftc *, XS_T *, u_int16_t); 86 87 #ifndef ISP_1000_RISC_CODE 88 #define ISP_1000_RISC_CODE NULL 89 #endif 90 91 static struct ispmdvec mdvec = { 92 isp_sbus_rd_isr, 93 isp_sbus_rd_reg, 94 isp_sbus_wr_reg, 95 isp_sbus_mbxdma, 96 isp_sbus_dmasetup, 97 isp_sbus_dmateardown, 98 NULL, 99 NULL, 100 NULL, 101 ISP_1000_RISC_CODE 102 }; 103 104 struct isp_sbussoftc { 105 struct ispsoftc sbus_isp; 106 struct sbusdev sbus_sd; 107 sdparam sbus_dev; 108 bus_space_tag_t sbus_bustag; 109 bus_dma_tag_t sbus_dmatag; 110 bus_space_handle_t sbus_reg; 111 int sbus_node; 112 int sbus_pri; 113 struct ispmdvec sbus_mdvec; 114 bus_dmamap_t *sbus_dmamap; 115 bus_dmamap_t sbus_rquest_dmamap; 116 bus_dmamap_t sbus_result_dmamap; 117 int16_t sbus_poff[_NREG_BLKS]; 118 }; 119 120 121 static int isp_match(struct device *, struct cfdata *, void *); 122 static void isp_sbus_attach(struct device *, struct device *, void *); 123 struct cfattach isp_sbus_ca = { 124 sizeof (struct isp_sbussoftc), isp_match, isp_sbus_attach 125 }; 126 127 static int 128 isp_match(struct device *parent, struct cfdata *cf, void *aux) 129 { 130 int rv; 131 #ifdef DEBUG 132 static int oneshot = 1; 133 #endif 134 struct sbus_attach_args *sa = aux; 135 136 rv = (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0 || 137 strcmp("PTI,ptisp", sa->sa_name) == 0 || 138 strcmp("ptisp", sa->sa_name) == 0 || 139 strcmp("SUNW,isp", sa->sa_name) == 0 || 140 strcmp("QLGC,isp", sa->sa_name) == 0); 141 #ifdef DEBUG 142 if (rv && oneshot) { 143 oneshot = 0; 144 printf("Qlogic ISP Driver, NetBSD (sbus) Platform Version " 145 "%d.%d Core Version %d.%d\n", 146 ISP_PLATFORM_VERSION_MAJOR, ISP_PLATFORM_VERSION_MINOR, 147 ISP_CORE_VERSION_MAJOR, ISP_CORE_VERSION_MINOR); 148 } 149 #endif 150 return (rv); 151 } 152 153 154 static void 155 isp_sbus_attach(struct device *parent, struct device *self, void *aux) 156 { 157 int freq, ispburst, sbusburst; 158 struct sbus_attach_args *sa = aux; 159 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) self; 160 struct ispsoftc *isp = &sbc->sbus_isp; 161 162 printf(" for %s\n", sa->sa_name); 163 164 sbc->sbus_bustag = sa->sa_bustag; 165 sbc->sbus_dmatag = sa->sa_dmatag; 166 if (sa->sa_nintr != 0) 167 sbc->sbus_pri = sa->sa_pri; 168 sbc->sbus_mdvec = mdvec; 169 170 if (sa->sa_npromvaddrs != 0) { 171 sbc->sbus_reg = (bus_space_handle_t)sa->sa_promvaddrs[0]; 172 } else { 173 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, sa->sa_offset, 174 sa->sa_size, BUS_SPACE_MAP_LINEAR, 0, 175 &sbc->sbus_reg) != 0) { 176 printf("%s: cannot map registers\n", self->dv_xname); 177 return; 178 } 179 } 180 sbc->sbus_node = sa->sa_node; 181 182 freq = PROM_getpropint(sa->sa_node, "clock-frequency", 0); 183 if (freq) { 184 /* 185 * Convert from HZ to MHz, rounding up. 186 */ 187 freq = (freq + 500000)/1000000; 188 #if 0 189 printf("%s: %d MHz\n", self->dv_xname, freq); 190 #endif 191 } 192 sbc->sbus_mdvec.dv_clock = freq; 193 194 /* 195 * Now figure out what the proper burst sizes, etc., to use. 196 * Unfortunately, there is no ddi_dma_burstsizes here which 197 * walks up the tree finding the limiting burst size node (if 198 * any). 199 */ 200 sbusburst = ((struct sbus_softc *)parent)->sc_burst; 201 if (sbusburst == 0) 202 sbusburst = SBUS_BURST_32 - 1; 203 ispburst = PROM_getpropint(sa->sa_node, "burst-sizes", -1); 204 if (ispburst == -1) { 205 ispburst = sbusburst; 206 } 207 ispburst &= sbusburst; 208 ispburst &= ~(1 << 7); 209 ispburst &= ~(1 << 6); 210 sbc->sbus_mdvec.dv_conf1 = 0; 211 if (ispburst & (1 << 5)) { 212 sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_32; 213 } else if (ispburst & (1 << 4)) { 214 sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_16; 215 } else if (ispburst & (1 << 3)) { 216 sbc->sbus_mdvec.dv_conf1 = 217 BIU_SBUS_CONF1_BURST8 | BIU_SBUS_CONF1_FIFO_8; 218 } 219 if (sbc->sbus_mdvec.dv_conf1) { 220 sbc->sbus_mdvec.dv_conf1 |= BIU_BURST_ENABLE; 221 } 222 223 /* 224 * Some early versions of the PTI SBus adapter 225 * would fail in trying to download (via poking) 226 * FW. We give up on them. 227 */ 228 if (strcmp("PTI,ptisp", sa->sa_name) == 0 || 229 strcmp("ptisp", sa->sa_name) == 0) { 230 sbc->sbus_mdvec.dv_ispfw = NULL; 231 } 232 233 isp->isp_mdvec = &sbc->sbus_mdvec; 234 isp->isp_bustype = ISP_BT_SBUS; 235 isp->isp_type = ISP_HA_SCSI_UNKNOWN; 236 isp->isp_param = &sbc->sbus_dev; 237 bzero(isp->isp_param, sizeof (sdparam)); 238 239 sbc->sbus_poff[BIU_BLOCK >> _BLK_REG_SHFT] = BIU_REGS_OFF; 240 sbc->sbus_poff[MBOX_BLOCK >> _BLK_REG_SHFT] = SBUS_MBOX_REGS_OFF; 241 sbc->sbus_poff[SXP_BLOCK >> _BLK_REG_SHFT] = SBUS_SXP_REGS_OFF; 242 sbc->sbus_poff[RISC_BLOCK >> _BLK_REG_SHFT] = SBUS_RISC_REGS_OFF; 243 sbc->sbus_poff[DMA_BLOCK >> _BLK_REG_SHFT] = DMA_REGS_OFF; 244 245 /* Establish interrupt channel */ 246 bus_intr_establish(sbc->sbus_bustag, sbc->sbus_pri, IPL_BIO, 0, 247 isp_sbus_intr, sbc); 248 sbus_establish(&sbc->sbus_sd, &sbc->sbus_isp.isp_osinfo._dev); 249 250 /* 251 * Set up logging levels. 252 */ 253 #ifdef ISP_LOGDEFAULT 254 isp->isp_dblev = ISP_LOGDEFAULT; 255 #else 256 isp->isp_dblev = ISP_LOGWARN|ISP_LOGERR; 257 if (bootverbose) 258 isp->isp_dblev |= ISP_LOGCONFIG|ISP_LOGINFO; 259 #ifdef SCSIDEBUG 260 isp->isp_dblev |= ISP_LOGDEBUG1|ISP_LOGDEBUG2; 261 #endif 262 #ifdef DEBUG 263 isp->isp_dblev |= ISP_LOGDEBUG0; 264 #endif 265 #endif 266 267 isp->isp_confopts = self->dv_cfdata->cf_flags; 268 isp->isp_role = ISP_DEFAULT_ROLES; 269 270 /* 271 * There's no tool on sparc to set NVRAM for ISPs, so ignore it. 272 */ 273 isp->isp_confopts |= ISP_CFG_NONVRAM; 274 ISP_LOCK(isp); 275 isp->isp_osinfo.no_mbox_ints = 1; 276 isp_reset(isp); 277 if (isp->isp_state != ISP_RESETSTATE) { 278 ISP_UNLOCK(isp); 279 return; 280 } 281 ENABLE_INTS(isp); 282 isp_init(isp); 283 if (isp->isp_state != ISP_INITSTATE) { 284 isp_uninit(isp); 285 ISP_UNLOCK(isp); 286 return; 287 } 288 289 /* 290 * do generic attach. 291 */ 292 ISP_UNLOCK(isp); 293 isp_attach(isp); 294 if (isp->isp_state != ISP_RUNSTATE) { 295 ISP_LOCK(isp); 296 isp_uninit(isp); 297 ISP_UNLOCK(isp); 298 } 299 } 300 301 static int 302 isp_sbus_intr(void *arg) 303 { 304 u_int16_t isr, sema, mbox; 305 struct ispsoftc *isp = arg; 306 struct isp_sbussoftc *sbc = arg; 307 308 bus_dmamap_sync(sbc->sbus_dmatag, sbc->sbus_result_dmamap, 0, 309 sbc->sbus_result_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD); 310 if (ISP_READ_ISR(isp, &isr, &sema, &mbox)) { 311 sbc->sbus_isp.isp_osinfo.onintstack = 1; 312 isp_intr(isp, isr, sema, mbox); 313 sbc->sbus_isp.isp_osinfo.onintstack = 0; 314 return (1); 315 } else { 316 return (0); 317 } 318 } 319 320 #define IspVirt2Off(a, x) \ 321 (((struct isp_sbussoftc *)a)->sbus_poff[((x) & _BLK_REG_MASK) >> \ 322 _BLK_REG_SHFT] + ((x) & 0xff)) 323 324 #define BXR2(sbc, off) \ 325 bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, off) 326 327 static int 328 isp_sbus_rd_isr(struct ispsoftc *isp, u_int16_t *isrp, 329 u_int16_t *semap, u_int16_t *mbp) 330 { 331 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 332 u_int16_t isr, sema; 333 334 isr = BXR2(sbc, IspVirt2Off(isp, BIU_ISR)); 335 sema = BXR2(sbc, IspVirt2Off(isp, BIU_SEMA)); 336 isp_prt(isp, ISP_LOGDEBUG3, "ISR 0x%x SEMA 0x%x", isr, sema); 337 isr &= INT_PENDING_MASK(isp); 338 sema &= BIU_SEMA_LOCK; 339 if (isr == 0 && sema == 0) { 340 return (0); 341 } 342 *isrp = isr; 343 if ((*semap = sema) != 0) { 344 *mbp = BXR2(sbc, IspVirt2Off(isp, OUTMAILBOX0)); 345 } 346 return (1); 347 } 348 349 static u_int16_t 350 isp_sbus_rd_reg(struct ispsoftc *isp, int regoff) 351 { 352 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 353 int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 354 offset += (regoff & 0xff); 355 return (bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, offset)); 356 } 357 358 static void 359 isp_sbus_wr_reg(struct ispsoftc *isp, int regoff, u_int16_t val) 360 { 361 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 362 int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 363 offset += (regoff & 0xff); 364 bus_space_write_2(sbc->sbus_bustag, sbc->sbus_reg, offset, val); 365 } 366 367 static int 368 isp_sbus_mbxdma(struct ispsoftc *isp) 369 { 370 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 371 bus_dma_tag_t dmatag = sbc->sbus_dmatag; 372 bus_dma_segment_t reqseg, rspseg; 373 int reqrs, rsprs, i, progress; 374 size_t n; 375 bus_size_t len; 376 377 if (isp->isp_rquest_dma) 378 return (0); 379 380 n = isp->isp_maxcmds * sizeof (XS_T *); 381 isp->isp_xflist = (XS_T **) malloc(n, M_DEVBUF, M_WAITOK); 382 if (isp->isp_xflist == NULL) { 383 isp_prt(isp, ISP_LOGERR, "cannot alloc xflist array"); 384 return (1); 385 } 386 bzero(isp->isp_xflist, n); 387 n = sizeof (bus_dmamap_t) * isp->isp_maxcmds; 388 sbc->sbus_dmamap = (bus_dmamap_t *) malloc(n, M_DEVBUF, M_WAITOK); 389 if (sbc->sbus_dmamap == NULL) { 390 free(isp->isp_xflist, M_DEVBUF); 391 isp->isp_xflist = NULL; 392 isp_prt(isp, ISP_LOGERR, "cannot alloc dmamap array"); 393 return (1); 394 } 395 for (i = 0; i < isp->isp_maxcmds; i++) { 396 /* Allocate a DMA handle */ 397 if (bus_dmamap_create(dmatag, MAXPHYS, 1, MAXPHYS, 0, 398 BUS_DMA_NOWAIT, &sbc->sbus_dmamap[i]) != 0) { 399 isp_prt(isp, ISP_LOGERR, "cmd DMA maps create error"); 400 break; 401 } 402 } 403 if (i < isp->isp_maxcmds) { 404 while (--i >= 0) { 405 bus_dmamap_destroy(dmatag, sbc->sbus_dmamap[i]); 406 } 407 free(isp->isp_xflist, M_DEVBUF); 408 free(sbc->sbus_dmamap, M_DEVBUF); 409 isp->isp_xflist = NULL; 410 sbc->sbus_dmamap = NULL; 411 return (1); 412 } 413 414 /* 415 * Allocate and map the request and response queues 416 */ 417 progress = 0; 418 len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); 419 if (bus_dmamem_alloc(dmatag, len, 0, 0, &reqseg, 1, &reqrs, 420 BUS_DMA_NOWAIT)) { 421 goto dmafail; 422 } 423 progress++; 424 if (bus_dmamem_map(dmatag, &reqseg, reqrs, len, 425 (caddr_t *)&isp->isp_rquest, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 426 goto dmafail; 427 } 428 progress++; 429 if (bus_dmamap_create(dmatag, len, 1, len, 0, BUS_DMA_NOWAIT, 430 &sbc->sbus_rquest_dmamap) != 0) { 431 goto dmafail; 432 } 433 progress++; 434 if (bus_dmamap_load(dmatag, sbc->sbus_rquest_dmamap, 435 isp->isp_rquest, len, NULL, BUS_DMA_NOWAIT) != 0) { 436 goto dmafail; 437 } 438 progress++; 439 isp->isp_rquest_dma = sbc->sbus_rquest_dmamap->dm_segs[0].ds_addr; 440 441 len = ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp)); 442 if (bus_dmamem_alloc(dmatag, len, 0, 0, &rspseg, 1, &rsprs, 443 BUS_DMA_NOWAIT)) { 444 goto dmafail; 445 } 446 progress++; 447 if (bus_dmamem_map(dmatag, &rspseg, rsprs, len, 448 (caddr_t *)&isp->isp_result, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 449 goto dmafail; 450 } 451 progress++; 452 if (bus_dmamap_create(dmatag, len, 1, len, 0, BUS_DMA_NOWAIT, 453 &sbc->sbus_result_dmamap) != 0) { 454 goto dmafail; 455 } 456 progress++; 457 if (bus_dmamap_load(dmatag, sbc->sbus_result_dmamap, 458 isp->isp_result, len, NULL, BUS_DMA_NOWAIT) != 0) { 459 goto dmafail; 460 } 461 isp->isp_result_dma = sbc->sbus_result_dmamap->dm_segs[0].ds_addr; 462 463 return (0); 464 465 dmafail: 466 isp_prt(isp, ISP_LOGERR, "Mailbox DMA Setup Failure"); 467 468 if (progress >= 8) { 469 bus_dmamap_unload(dmatag, sbc->sbus_result_dmamap); 470 } 471 if (progress >= 7) { 472 bus_dmamap_destroy(dmatag, sbc->sbus_result_dmamap); 473 } 474 if (progress >= 6) { 475 bus_dmamem_unmap(dmatag, 476 isp->isp_result, ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp))); 477 } 478 if (progress >= 5) { 479 bus_dmamem_free(dmatag, &rspseg, rsprs); 480 } 481 482 if (progress >= 4) { 483 bus_dmamap_unload(dmatag, sbc->sbus_rquest_dmamap); 484 } 485 if (progress >= 3) { 486 bus_dmamap_destroy(dmatag, sbc->sbus_rquest_dmamap); 487 } 488 if (progress >= 2) { 489 bus_dmamem_unmap(dmatag, 490 isp->isp_rquest, ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp))); 491 } 492 if (progress >= 1) { 493 bus_dmamem_free(dmatag, &reqseg, reqrs); 494 } 495 496 for (i = 0; i < isp->isp_maxcmds; i++) { 497 bus_dmamap_destroy(dmatag, sbc->sbus_dmamap[i]); 498 } 499 free(sbc->sbus_dmamap, M_DEVBUF); 500 free(isp->isp_xflist, M_DEVBUF); 501 isp->isp_xflist = NULL; 502 sbc->sbus_dmamap = NULL; 503 return (1); 504 } 505 506 /* 507 * Map a DMA request. 508 * We're guaranteed that rq->req_handle is a value from 1 to isp->isp_maxcmds. 509 */ 510 511 static int 512 isp_sbus_dmasetup(struct ispsoftc *isp, XS_T *xs, ispreq_t *rq, 513 u_int16_t *iptrp, u_int16_t optr) 514 { 515 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 516 bus_dmamap_t dmap; 517 ispcontreq_t *crq; 518 int cansleep = (xs->xs_control & XS_CTL_NOSLEEP) == 0; 519 int in = (xs->xs_control & XS_CTL_DATA_IN) != 0; 520 521 if (xs->datalen == 0) { 522 rq->req_seg_count = 1; 523 goto mbxsync; 524 } 525 526 dmap = sbc->sbus_dmamap[isp_handle_index(rq->req_handle)]; 527 if (dmap->dm_nsegs != 0) { 528 panic("%s: dma map already allocated\n", isp->isp_name); 529 /* NOTREACHED */ 530 } 531 if (bus_dmamap_load(sbc->sbus_dmatag, dmap, xs->data, xs->datalen, 532 NULL, (cansleep ? BUS_DMA_WAITOK : BUS_DMA_NOWAIT) | 533 BUS_DMA_STREAMING) != 0) { 534 XS_SETERR(xs, HBA_BOTCH); 535 return (CMD_COMPLETE); 536 } 537 538 bus_dmamap_sync(sbc->sbus_dmatag, dmap, 0, xs->datalen, 539 in? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 540 541 if (in) { 542 rq->req_flags |= REQFLAG_DATA_IN; 543 } else { 544 rq->req_flags |= REQFLAG_DATA_OUT; 545 } 546 547 if (XS_CDBLEN(xs) > 12) { 548 crq = (ispcontreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, *iptrp); 549 *iptrp = ISP_NXT_QENTRY(*iptrp, RQUEST_QUEUE_LEN(isp)); 550 if (*iptrp == optr) { 551 isp_prt(isp, ISP_LOGDEBUG0, "Request Queue Overflow++"); 552 bus_dmamap_unload(sbc->sbus_dmatag, dmap); 553 XS_SETERR(xs, HBA_BOTCH); 554 return (CMD_EAGAIN); 555 } 556 rq->req_seg_count = 2; 557 rq->req_dataseg[0].ds_count = 0; 558 rq->req_dataseg[0].ds_base = 0; 559 bzero((void *)crq, sizeof (*crq)); 560 crq->req_header.rqs_entry_count = 1; 561 crq->req_header.rqs_entry_type = RQSTYPE_DATASEG; 562 crq->req_dataseg[0].ds_count = xs->datalen; 563 crq->req_dataseg[0].ds_base = dmap->dm_segs[0].ds_addr; 564 ISP_SBUSIFY_ISPHDR(isp, &crq->req_header) 565 } else { 566 rq->req_dataseg[0].ds_count = xs->datalen; 567 rq->req_dataseg[0].ds_base = dmap->dm_segs[0].ds_addr; 568 rq->req_seg_count = 1; 569 } 570 571 mbxsync: 572 ISP_SWIZZLE_REQUEST(isp, rq); 573 bus_dmamap_sync(sbc->sbus_dmatag, sbc->sbus_rquest_dmamap, 0, 574 sbc->sbus_rquest_dmamap->dm_mapsize, BUS_DMASYNC_PREWRITE); 575 return (CMD_QUEUED); 576 } 577 578 static void 579 isp_sbus_dmateardown(struct ispsoftc *isp, XS_T *xs, u_int16_t handle) 580 { 581 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 582 bus_dmamap_t dmap; 583 584 dmap = sbc->sbus_dmamap[isp_handle_index(handle)]; 585 586 if (dmap->dm_nsegs == 0) { 587 panic("%s: dma map not already allocated\n", isp->isp_name); 588 /* NOTREACHED */ 589 } 590 bus_dmamap_sync(sbc->sbus_dmatag, dmap, 0, 591 xs->datalen, (xs->xs_control & XS_CTL_DATA_IN)? 592 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 593 bus_dmamap_unload(sbc->sbus_dmatag, dmap); 594 } 595
Indexes created Thu Oct 23 18:09:57 GMT 2025