isp_sbus.c revision 1.40.2.6
1 /* $NetBSD: isp_sbus.c,v 1.40.2.6 2001/11/14 19:15:58 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/cdefs.h> 62 __KERNEL_RCSID(0, "$NetBSD: isp_sbus.c,v 1.40.2.6 2001/11/14 19:15:58 nathanw Exp $"); 63 64 #include <sys/param.h> 65 #include <sys/systm.h> 66 #include <sys/device.h> 67 #include <sys/kernel.h> 68 #include <sys/malloc.h> 69 #include <sys/queue.h> 70 71 #include <machine/bus.h> 72 #include <machine/intr.h> 73 #include <machine/autoconf.h> 74 75 #include <dev/ic/isp_netbsd.h> 76 #include <dev/microcode/isp/asm_sbus.h> 77 #include <dev/sbus/sbusvar.h> 78 #include <sys/reboot.h> 79 80 static int isp_sbus_intr(void *); 81 static int 82 isp_sbus_rd_isr(struct ispsoftc *, u_int16_t *, u_int16_t *, u_int16_t *); 83 static u_int16_t isp_sbus_rd_reg(struct ispsoftc *, int); 84 static void isp_sbus_wr_reg (struct ispsoftc *, int, u_int16_t); 85 static int isp_sbus_mbxdma(struct ispsoftc *); 86 static int isp_sbus_dmasetup(struct ispsoftc *, XS_T *, ispreq_t *, u_int16_t *, 87 u_int16_t); 88 static void isp_sbus_dmateardown(struct ispsoftc *, XS_T *, u_int16_t); 89 90 #ifndef ISP_1000_RISC_CODE 91 #define ISP_1000_RISC_CODE NULL 92 #endif 93 94 static struct ispmdvec mdvec = { 95 isp_sbus_rd_isr, 96 isp_sbus_rd_reg, 97 isp_sbus_wr_reg, 98 isp_sbus_mbxdma, 99 isp_sbus_dmasetup, 100 isp_sbus_dmateardown, 101 NULL, 102 NULL, 103 NULL, 104 ISP_1000_RISC_CODE 105 }; 106 107 struct isp_sbussoftc { 108 struct ispsoftc sbus_isp; 109 struct sbusdev sbus_sd; 110 sdparam sbus_dev; 111 bus_space_tag_t sbus_bustag; 112 bus_dma_tag_t sbus_dmatag; 113 bus_space_handle_t sbus_reg; 114 int sbus_node; 115 int sbus_pri; 116 struct ispmdvec sbus_mdvec; 117 bus_dmamap_t *sbus_dmamap; 118 bus_dmamap_t sbus_rquest_dmamap; 119 bus_dmamap_t sbus_result_dmamap; 120 int16_t sbus_poff[_NREG_BLKS]; 121 }; 122 123 124 static int isp_match(struct device *, struct cfdata *, void *); 125 static void isp_sbus_attach(struct device *, struct device *, void *); 126 struct cfattach isp_sbus_ca = { 127 sizeof (struct isp_sbussoftc), isp_match, isp_sbus_attach 128 }; 129 130 static int 131 isp_match(struct device *parent, struct cfdata *cf, void *aux) 132 { 133 int rv; 134 #ifdef DEBUG 135 static int oneshot = 1; 136 #endif 137 struct sbus_attach_args *sa = aux; 138 139 rv = (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0 || 140 strcmp("PTI,ptisp", sa->sa_name) == 0 || 141 strcmp("ptisp", sa->sa_name) == 0 || 142 strcmp("SUNW,isp", sa->sa_name) == 0 || 143 strcmp("QLGC,isp", sa->sa_name) == 0); 144 #ifdef DEBUG 145 if (rv && oneshot) { 146 oneshot = 0; 147 printf("Qlogic ISP Driver, NetBSD (sbus) Platform Version " 148 "%d.%d Core Version %d.%d\n", 149 ISP_PLATFORM_VERSION_MAJOR, ISP_PLATFORM_VERSION_MINOR, 150 ISP_CORE_VERSION_MAJOR, ISP_CORE_VERSION_MINOR); 151 } 152 #endif 153 return (rv); 154 } 155 156 157 static void 158 isp_sbus_attach(struct device *parent, struct device *self, void *aux) 159 { 160 int freq, ispburst, sbusburst; 161 struct sbus_attach_args *sa = aux; 162 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) self; 163 struct ispsoftc *isp = &sbc->sbus_isp; 164 165 printf(" for %s\n", sa->sa_name); 166 167 sbc->sbus_bustag = sa->sa_bustag; 168 sbc->sbus_dmatag = sa->sa_dmatag; 169 if (sa->sa_nintr != 0) 170 sbc->sbus_pri = sa->sa_pri; 171 sbc->sbus_mdvec = mdvec; 172 173 if (sa->sa_npromvaddrs != 0) { 174 sbc->sbus_reg = (bus_space_handle_t)sa->sa_promvaddrs[0]; 175 } else { 176 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, sa->sa_offset, 177 sa->sa_size, BUS_SPACE_MAP_LINEAR, 0, 178 &sbc->sbus_reg) != 0) { 179 printf("%s: cannot map registers\n", self->dv_xname); 180 return; 181 } 182 } 183 sbc->sbus_node = sa->sa_node; 184 185 freq = PROM_getpropint(sa->sa_node, "clock-frequency", 0); 186 if (freq) { 187 /* 188 * Convert from HZ to MHz, rounding up. 189 */ 190 freq = (freq + 500000)/1000000; 191 #if 0 192 printf("%s: %d MHz\n", self->dv_xname, freq); 193 #endif 194 } 195 sbc->sbus_mdvec.dv_clock = freq; 196 197 /* 198 * Now figure out what the proper burst sizes, etc., to use. 199 * Unfortunately, there is no ddi_dma_burstsizes here which 200 * walks up the tree finding the limiting burst size node (if 201 * any). 202 */ 203 sbusburst = ((struct sbus_softc *)parent)->sc_burst; 204 if (sbusburst == 0) 205 sbusburst = SBUS_BURST_32 - 1; 206 ispburst = PROM_getpropint(sa->sa_node, "burst-sizes", -1); 207 if (ispburst == -1) { 208 ispburst = sbusburst; 209 } 210 ispburst &= sbusburst; 211 ispburst &= ~(1 << 7); 212 ispburst &= ~(1 << 6); 213 sbc->sbus_mdvec.dv_conf1 = 0; 214 if (ispburst & (1 << 5)) { 215 sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_32; 216 } else if (ispburst & (1 << 4)) { 217 sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_16; 218 } else if (ispburst & (1 << 3)) { 219 sbc->sbus_mdvec.dv_conf1 = 220 BIU_SBUS_CONF1_BURST8 | BIU_SBUS_CONF1_FIFO_8; 221 } 222 if (sbc->sbus_mdvec.dv_conf1) { 223 sbc->sbus_mdvec.dv_conf1 |= BIU_BURST_ENABLE; 224 } 225 226 /* 227 * Some early versions of the PTI SBus adapter 228 * would fail in trying to download (via poking) 229 * FW. We give up on them. 230 */ 231 if (strcmp("PTI,ptisp", sa->sa_name) == 0 || 232 strcmp("ptisp", sa->sa_name) == 0) { 233 sbc->sbus_mdvec.dv_ispfw = NULL; 234 } 235 236 isp->isp_mdvec = &sbc->sbus_mdvec; 237 isp->isp_bustype = ISP_BT_SBUS; 238 isp->isp_type = ISP_HA_SCSI_UNKNOWN; 239 isp->isp_param = &sbc->sbus_dev; 240 bzero(isp->isp_param, sizeof (sdparam)); 241 242 sbc->sbus_poff[BIU_BLOCK >> _BLK_REG_SHFT] = BIU_REGS_OFF; 243 sbc->sbus_poff[MBOX_BLOCK >> _BLK_REG_SHFT] = SBUS_MBOX_REGS_OFF; 244 sbc->sbus_poff[SXP_BLOCK >> _BLK_REG_SHFT] = SBUS_SXP_REGS_OFF; 245 sbc->sbus_poff[RISC_BLOCK >> _BLK_REG_SHFT] = SBUS_RISC_REGS_OFF; 246 sbc->sbus_poff[DMA_BLOCK >> _BLK_REG_SHFT] = DMA_REGS_OFF; 247 248 /* Establish interrupt channel */ 249 bus_intr_establish(sbc->sbus_bustag, sbc->sbus_pri, IPL_BIO, 0, 250 isp_sbus_intr, sbc); 251 sbus_establish(&sbc->sbus_sd, &sbc->sbus_isp.isp_osinfo._dev); 252 253 /* 254 * Set up logging levels. 255 */ 256 #ifdef ISP_LOGDEFAULT 257 isp->isp_dblev = ISP_LOGDEFAULT; 258 #else 259 isp->isp_dblev = ISP_LOGWARN|ISP_LOGERR; 260 if (bootverbose) 261 isp->isp_dblev |= ISP_LOGCONFIG|ISP_LOGINFO; 262 #ifdef SCSIDEBUG 263 isp->isp_dblev |= ISP_LOGDEBUG1|ISP_LOGDEBUG2; 264 #endif 265 #ifdef DEBUG 266 isp->isp_dblev |= ISP_LOGDEBUG0; 267 #endif 268 #endif 269 270 isp->isp_confopts = self->dv_cfdata->cf_flags; 271 isp->isp_role = ISP_DEFAULT_ROLES; 272 273 /* 274 * There's no tool on sparc to set NVRAM for ISPs, so ignore it. 275 */ 276 isp->isp_confopts |= ISP_CFG_NONVRAM; 277 ISP_LOCK(isp); 278 isp->isp_osinfo.no_mbox_ints = 1; 279 isp_reset(isp); 280 if (isp->isp_state != ISP_RESETSTATE) { 281 ISP_UNLOCK(isp); 282 return; 283 } 284 ENABLE_INTS(isp); 285 isp_init(isp); 286 if (isp->isp_state != ISP_INITSTATE) { 287 isp_uninit(isp); 288 ISP_UNLOCK(isp); 289 return; 290 } 291 292 /* 293 * do generic attach. 294 */ 295 ISP_UNLOCK(isp); 296 isp_attach(isp); 297 if (isp->isp_state != ISP_RUNSTATE) { 298 ISP_LOCK(isp); 299 isp_uninit(isp); 300 ISP_UNLOCK(isp); 301 } 302 } 303 304 static int 305 isp_sbus_intr(void *arg) 306 { 307 u_int16_t isr, sema, mbox; 308 struct ispsoftc *isp = arg; 309 struct isp_sbussoftc *sbc = arg; 310 311 bus_dmamap_sync(sbc->sbus_dmatag, sbc->sbus_result_dmamap, 0, 312 sbc->sbus_result_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD); 313 if (ISP_READ_ISR(isp, &isr, &sema, &mbox)) { 314 sbc->sbus_isp.isp_osinfo.onintstack = 1; 315 isp_intr(isp, isr, sema, mbox); 316 sbc->sbus_isp.isp_osinfo.onintstack = 0; 317 return (1); 318 } else { 319 return (0); 320 } 321 } 322 323 #define IspVirt2Off(a, x) \ 324 (((struct isp_sbussoftc *)a)->sbus_poff[((x) & _BLK_REG_MASK) >> \ 325 _BLK_REG_SHFT] + ((x) & 0xff)) 326 327 #define BXR2(sbc, off) \ 328 bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, off) 329 330 static int 331 isp_sbus_rd_isr(struct ispsoftc *isp, u_int16_t *isrp, 332 u_int16_t *semap, u_int16_t *mbp) 333 { 334 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 335 u_int16_t isr, sema; 336 337 isr = BXR2(sbc, IspVirt2Off(isp, BIU_ISR)); 338 sema = BXR2(sbc, IspVirt2Off(isp, BIU_SEMA)); 339 isp_prt(isp, ISP_LOGDEBUG3, "ISR 0x%x SEMA 0x%x", isr, sema); 340 isr &= INT_PENDING_MASK(isp); 341 sema &= BIU_SEMA_LOCK; 342 if (isr == 0 && sema == 0) { 343 return (0); 344 } 345 *isrp = isr; 346 if ((*semap = sema) != 0) { 347 *mbp = BXR2(sbc, IspVirt2Off(isp, OUTMAILBOX0)); 348 } 349 return (1); 350 } 351 352 static u_int16_t 353 isp_sbus_rd_reg(struct ispsoftc *isp, int regoff) 354 { 355 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 356 int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 357 offset += (regoff & 0xff); 358 return (bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, offset)); 359 } 360 361 static void 362 isp_sbus_wr_reg(struct ispsoftc *isp, int regoff, u_int16_t val) 363 { 364 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 365 int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 366 offset += (regoff & 0xff); 367 bus_space_write_2(sbc->sbus_bustag, sbc->sbus_reg, offset, val); 368 } 369 370 static int 371 isp_sbus_mbxdma(struct ispsoftc *isp) 372 { 373 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 374 bus_dma_tag_t dmatag = sbc->sbus_dmatag; 375 bus_dma_segment_t reqseg, rspseg; 376 int reqrs, rsprs, i, progress; 377 size_t n; 378 bus_size_t len; 379 380 if (isp->isp_rquest_dma) 381 return (0); 382 383 n = isp->isp_maxcmds * sizeof (XS_T *); 384 isp->isp_xflist = (XS_T **) malloc(n, M_DEVBUF, M_WAITOK); 385 if (isp->isp_xflist == NULL) { 386 isp_prt(isp, ISP_LOGERR, "cannot alloc xflist array"); 387 return (1); 388 } 389 bzero(isp->isp_xflist, n); 390 n = sizeof (bus_dmamap_t) * isp->isp_maxcmds; 391 sbc->sbus_dmamap = (bus_dmamap_t *) malloc(n, M_DEVBUF, M_WAITOK); 392 if (sbc->sbus_dmamap == NULL) { 393 free(isp->isp_xflist, M_DEVBUF); 394 isp->isp_xflist = NULL; 395 isp_prt(isp, ISP_LOGERR, "cannot alloc dmamap array"); 396 return (1); 397 } 398 for (i = 0; i < isp->isp_maxcmds; i++) { 399 /* Allocate a DMA handle */ 400 if (bus_dmamap_create(dmatag, MAXPHYS, 1, MAXPHYS, 0, 401 BUS_DMA_NOWAIT, &sbc->sbus_dmamap[i]) != 0) { 402 isp_prt(isp, ISP_LOGERR, "cmd DMA maps create error"); 403 break; 404 } 405 } 406 if (i < isp->isp_maxcmds) { 407 while (--i >= 0) { 408 bus_dmamap_destroy(dmatag, sbc->sbus_dmamap[i]); 409 } 410 free(isp->isp_xflist, M_DEVBUF); 411 free(sbc->sbus_dmamap, M_DEVBUF); 412 isp->isp_xflist = NULL; 413 sbc->sbus_dmamap = NULL; 414 return (1); 415 } 416 417 /* 418 * Allocate and map the request and response queues 419 */ 420 progress = 0; 421 len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); 422 if (bus_dmamem_alloc(dmatag, len, 0, 0, &reqseg, 1, &reqrs, 423 BUS_DMA_NOWAIT)) { 424 goto dmafail; 425 } 426 progress++; 427 if (bus_dmamem_map(dmatag, &reqseg, reqrs, len, 428 (caddr_t *)&isp->isp_rquest, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 429 goto dmafail; 430 } 431 progress++; 432 if (bus_dmamap_create(dmatag, len, 1, len, 0, BUS_DMA_NOWAIT, 433 &sbc->sbus_rquest_dmamap) != 0) { 434 goto dmafail; 435 } 436 progress++; 437 if (bus_dmamap_load(dmatag, sbc->sbus_rquest_dmamap, 438 isp->isp_rquest, len, NULL, BUS_DMA_NOWAIT) != 0) { 439 goto dmafail; 440 } 441 progress++; 442 isp->isp_rquest_dma = sbc->sbus_rquest_dmamap->dm_segs[0].ds_addr; 443 444 len = ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp)); 445 if (bus_dmamem_alloc(dmatag, len, 0, 0, &rspseg, 1, &rsprs, 446 BUS_DMA_NOWAIT)) { 447 goto dmafail; 448 } 449 progress++; 450 if (bus_dmamem_map(dmatag, &rspseg, rsprs, len, 451 (caddr_t *)&isp->isp_result, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 452 goto dmafail; 453 } 454 progress++; 455 if (bus_dmamap_create(dmatag, len, 1, len, 0, BUS_DMA_NOWAIT, 456 &sbc->sbus_result_dmamap) != 0) { 457 goto dmafail; 458 } 459 progress++; 460 if (bus_dmamap_load(dmatag, sbc->sbus_result_dmamap, 461 isp->isp_result, len, NULL, BUS_DMA_NOWAIT) != 0) { 462 goto dmafail; 463 } 464 isp->isp_result_dma = sbc->sbus_result_dmamap->dm_segs[0].ds_addr; 465 466 return (0); 467 468 dmafail: 469 isp_prt(isp, ISP_LOGERR, "Mailbox DMA Setup Failure"); 470 471 if (progress >= 8) { 472 bus_dmamap_unload(dmatag, sbc->sbus_result_dmamap); 473 } 474 if (progress >= 7) { 475 bus_dmamap_destroy(dmatag, sbc->sbus_result_dmamap); 476 } 477 if (progress >= 6) { 478 bus_dmamem_unmap(dmatag, 479 isp->isp_result, ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp))); 480 } 481 if (progress >= 5) { 482 bus_dmamem_free(dmatag, &rspseg, rsprs); 483 } 484 485 if (progress >= 4) { 486 bus_dmamap_unload(dmatag, sbc->sbus_rquest_dmamap); 487 } 488 if (progress >= 3) { 489 bus_dmamap_destroy(dmatag, sbc->sbus_rquest_dmamap); 490 } 491 if (progress >= 2) { 492 bus_dmamem_unmap(dmatag, 493 isp->isp_rquest, ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp))); 494 } 495 if (progress >= 1) { 496 bus_dmamem_free(dmatag, &reqseg, reqrs); 497 } 498 499 for (i = 0; i < isp->isp_maxcmds; i++) { 500 bus_dmamap_destroy(dmatag, sbc->sbus_dmamap[i]); 501 } 502 free(sbc->sbus_dmamap, M_DEVBUF); 503 free(isp->isp_xflist, M_DEVBUF); 504 isp->isp_xflist = NULL; 505 sbc->sbus_dmamap = NULL; 506 return (1); 507 } 508 509 /* 510 * Map a DMA request. 511 * We're guaranteed that rq->req_handle is a value from 1 to isp->isp_maxcmds. 512 */ 513 514 static int 515 isp_sbus_dmasetup(struct ispsoftc *isp, XS_T *xs, ispreq_t *rq, 516 u_int16_t *iptrp, u_int16_t optr) 517 { 518 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 519 bus_dmamap_t dmap; 520 ispcontreq_t *crq; 521 int cansleep = (xs->xs_control & XS_CTL_NOSLEEP) == 0; 522 int in = (xs->xs_control & XS_CTL_DATA_IN) != 0; 523 524 if (xs->datalen == 0) { 525 rq->req_seg_count = 1; 526 goto mbxsync; 527 } 528 529 dmap = sbc->sbus_dmamap[isp_handle_index(rq->req_handle)]; 530 if (dmap->dm_nsegs != 0) { 531 panic("%s: dma map already allocated\n", isp->isp_name); 532 /* NOTREACHED */ 533 } 534 if (bus_dmamap_load(sbc->sbus_dmatag, dmap, xs->data, xs->datalen, 535 NULL, (cansleep ? BUS_DMA_WAITOK : BUS_DMA_NOWAIT) | 536 BUS_DMA_STREAMING) != 0) { 537 XS_SETERR(xs, HBA_BOTCH); 538 return (CMD_COMPLETE); 539 } 540 541 bus_dmamap_sync(sbc->sbus_dmatag, dmap, 0, xs->datalen, 542 in? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 543 544 if (in) { 545 rq->req_flags |= REQFLAG_DATA_IN; 546 } else { 547 rq->req_flags |= REQFLAG_DATA_OUT; 548 } 549 550 if (XS_CDBLEN(xs) > 12) { 551 crq = (ispcontreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, *iptrp); 552 *iptrp = ISP_NXT_QENTRY(*iptrp, RQUEST_QUEUE_LEN(isp)); 553 if (*iptrp == optr) { 554 isp_prt(isp, ISP_LOGDEBUG0, "Request Queue Overflow++"); 555 bus_dmamap_unload(sbc->sbus_dmatag, dmap); 556 XS_SETERR(xs, HBA_BOTCH); 557 return (CMD_EAGAIN); 558 } 559 rq->req_seg_count = 2; 560 rq->req_dataseg[0].ds_count = 0; 561 rq->req_dataseg[0].ds_base = 0; 562 bzero((void *)crq, sizeof (*crq)); 563 crq->req_header.rqs_entry_count = 1; 564 crq->req_header.rqs_entry_type = RQSTYPE_DATASEG; 565 crq->req_dataseg[0].ds_count = xs->datalen; 566 crq->req_dataseg[0].ds_base = dmap->dm_segs[0].ds_addr; 567 ISP_SBUSIFY_ISPHDR(isp, &crq->req_header) 568 } else { 569 rq->req_dataseg[0].ds_count = xs->datalen; 570 rq->req_dataseg[0].ds_base = dmap->dm_segs[0].ds_addr; 571 rq->req_seg_count = 1; 572 } 573 574 mbxsync: 575 ISP_SWIZZLE_REQUEST(isp, rq); 576 bus_dmamap_sync(sbc->sbus_dmatag, sbc->sbus_rquest_dmamap, 0, 577 sbc->sbus_rquest_dmamap->dm_mapsize, BUS_DMASYNC_PREWRITE); 578 return (CMD_QUEUED); 579 } 580 581 static void 582 isp_sbus_dmateardown(struct ispsoftc *isp, XS_T *xs, u_int16_t handle) 583 { 584 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 585 bus_dmamap_t dmap; 586 587 dmap = sbc->sbus_dmamap[isp_handle_index(handle)]; 588 589 if (dmap->dm_nsegs == 0) { 590 panic("%s: dma map not already allocated\n", isp->isp_name); 591 /* NOTREACHED */ 592 } 593 bus_dmamap_sync(sbc->sbus_dmatag, dmap, 0, 594 xs->datalen, (xs->xs_control & XS_CTL_DATA_IN)? 595 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 596 bus_dmamap_unload(sbc->sbus_dmatag, dmap); 597 } 598
Indexes created Tue Oct 21 19:09:51 GMT 2025