1 /* $NetBSD: isp_sbus.c,v 1.53 2002/05/18 00:48:11 mjacob 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@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 1.53 2002/05/18 00:48:11 mjacob 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 #include <dev/ic/isp_netbsd.h> 71 #include <machine/intr.h> 72 #include <machine/autoconf.h> 73 #include <dev/microcode/isp/asm_sbus.h> 74 #include <dev/sbus/sbusvar.h> 75 #include <sys/reboot.h> 76 77 static void isp_sbus_reset1(struct ispsoftc *); 78 static int isp_sbus_intr(void *); 79 static int 80 isp_sbus_rd_isr(struct ispsoftc *, u_int16_t *, u_int16_t *, u_int16_t *); 81 static u_int16_t isp_sbus_rd_reg(struct ispsoftc *, int); 82 static void isp_sbus_wr_reg (struct ispsoftc *, int, u_int16_t); 83 static int isp_sbus_mbxdma(struct ispsoftc *); 84 static int isp_sbus_dmasetup(struct ispsoftc *, XS_T *, ispreq_t *, u_int16_t *, 85 u_int16_t); 86 static void isp_sbus_dmateardown(struct ispsoftc *, XS_T *, u_int16_t); 87 88 #ifndef ISP_1000_RISC_CODE 89 #define ISP_1000_RISC_CODE NULL 90 #endif 91 92 static struct ispmdvec mdvec = { 93 isp_sbus_rd_isr, 94 isp_sbus_rd_reg, 95 isp_sbus_wr_reg, 96 isp_sbus_mbxdma, 97 isp_sbus_dmasetup, 98 isp_sbus_dmateardown, 99 NULL, 100 isp_sbus_reset1, 101 NULL, 102 ISP_1000_RISC_CODE 103 }; 104 105 struct isp_sbussoftc { 106 struct ispsoftc sbus_isp; 107 struct sbusdev sbus_sd; 108 sdparam sbus_dev; 109 bus_space_tag_t sbus_bustag; 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 int16_t sbus_poff[_NREG_BLKS]; 116 }; 117 118 119 static int isp_match(struct device *, struct cfdata *, void *); 120 static void isp_sbus_attach(struct device *, struct device *, void *); 121 struct cfattach isp_sbus_ca = { 122 sizeof (struct isp_sbussoftc), isp_match, isp_sbus_attach 123 }; 124 125 static int 126 isp_match(struct device *parent, struct cfdata *cf, void *aux) 127 { 128 int rv; 129 #ifdef DEBUG 130 static int oneshot = 1; 131 #endif 132 struct sbus_attach_args *sa = aux; 133 134 rv = (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0 || 135 strcmp("PTI,ptisp", sa->sa_name) == 0 || 136 strcmp("ptisp", sa->sa_name) == 0 || 137 strcmp("SUNW,isp", sa->sa_name) == 0 || 138 strcmp("QLGC,isp", sa->sa_name) == 0); 139 #ifdef DEBUG 140 if (rv && oneshot) { 141 oneshot = 0; 142 printf("Qlogic ISP Driver, NetBSD (sbus) Platform Version " 143 "%d.%d Core Version %d.%d\n", 144 ISP_PLATFORM_VERSION_MAJOR, ISP_PLATFORM_VERSION_MINOR, 145 ISP_CORE_VERSION_MAJOR, ISP_CORE_VERSION_MINOR); 146 } 147 #endif 148 return (rv); 149 } 150 151 152 static void 153 isp_sbus_attach(struct device *parent, struct device *self, void *aux) 154 { 155 int freq, ispburst, sbusburst; 156 struct sbus_attach_args *sa = aux; 157 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) self; 158 struct ispsoftc *isp = &sbc->sbus_isp; 159 160 printf(" for %s\n", sa->sa_name); 161 162 sbc->sbus_bustag = sa->sa_bustag; 163 if (sa->sa_nintr != 0) 164 sbc->sbus_pri = sa->sa_pri; 165 sbc->sbus_mdvec = mdvec; 166 167 if (sa->sa_npromvaddrs) { 168 sbus_promaddr_to_handle(sa->sa_bustag, 169 sa->sa_promvaddrs[0], &sbc->sbus_reg); 170 } else { 171 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, sa->sa_offset, 172 sa->sa_size, 0, &sbc->sbus_reg) != 0) { 173 printf("%s: cannot map registers\n", self->dv_xname); 174 return; 175 } 176 } 177 sbc->sbus_node = sa->sa_node; 178 179 freq = PROM_getpropint(sa->sa_node, "clock-frequency", 0); 180 if (freq) { 181 /* 182 * Convert from HZ to MHz, rounding up. 183 */ 184 freq = (freq + 500000)/1000000; 185 #if 0 186 printf("%s: %d MHz\n", self->dv_xname, freq); 187 #endif 188 } 189 sbc->sbus_mdvec.dv_clock = freq; 190 191 /* 192 * Now figure out what the proper burst sizes, etc., to use. 193 * Unfortunately, there is no ddi_dma_burstsizes here which 194 * walks up the tree finding the limiting burst size node (if 195 * any). 196 */ 197 sbusburst = ((struct sbus_softc *)parent)->sc_burst; 198 if (sbusburst == 0) 199 sbusburst = SBUS_BURST_32 - 1; 200 ispburst = PROM_getpropint(sa->sa_node, "burst-sizes", -1); 201 if (ispburst == -1) { 202 ispburst = sbusburst; 203 } 204 ispburst &= sbusburst; 205 ispburst &= ~(1 << 7); 206 ispburst &= ~(1 << 6); 207 sbc->sbus_mdvec.dv_conf1 = 0; 208 if (ispburst & (1 << 5)) { 209 sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_32; 210 } else if (ispburst & (1 << 4)) { 211 sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_16; 212 } else if (ispburst & (1 << 3)) { 213 sbc->sbus_mdvec.dv_conf1 = 214 BIU_SBUS_CONF1_BURST8 | BIU_SBUS_CONF1_FIFO_8; 215 } 216 if (sbc->sbus_mdvec.dv_conf1) { 217 sbc->sbus_mdvec.dv_conf1 |= BIU_BURST_ENABLE; 218 } 219 220 /* 221 * Some early versions of the PTI SBus adapter 222 * would fail in trying to download (via poking) 223 * FW. We give up on them. 224 */ 225 if (strcmp("PTI,ptisp", sa->sa_name) == 0 || 226 strcmp("ptisp", sa->sa_name) == 0) { 227 sbc->sbus_mdvec.dv_ispfw = NULL; 228 } 229 230 isp->isp_mdvec = &sbc->sbus_mdvec; 231 isp->isp_bustype = ISP_BT_SBUS; 232 isp->isp_type = ISP_HA_SCSI_UNKNOWN; 233 isp->isp_param = &sbc->sbus_dev; 234 isp->isp_dmatag = sa->sa_dmatag; 235 MEMZERO(isp->isp_param, sizeof (sdparam)); 236 237 sbc->sbus_poff[BIU_BLOCK >> _BLK_REG_SHFT] = BIU_REGS_OFF; 238 sbc->sbus_poff[MBOX_BLOCK >> _BLK_REG_SHFT] = SBUS_MBOX_REGS_OFF; 239 sbc->sbus_poff[SXP_BLOCK >> _BLK_REG_SHFT] = SBUS_SXP_REGS_OFF; 240 sbc->sbus_poff[RISC_BLOCK >> _BLK_REG_SHFT] = SBUS_RISC_REGS_OFF; 241 sbc->sbus_poff[DMA_BLOCK >> _BLK_REG_SHFT] = DMA_REGS_OFF; 242 243 /* Establish interrupt channel */ 244 bus_intr_establish(sbc->sbus_bustag, sbc->sbus_pri, IPL_BIO, 0, 245 isp_sbus_intr, sbc); 246 sbus_establish(&sbc->sbus_sd, &sbc->sbus_isp.isp_osinfo._dev); 247 248 /* 249 * Set up logging levels. 250 */ 251 #ifdef ISP_LOGDEFAULT 252 isp->isp_dblev = ISP_LOGDEFAULT; 253 #else 254 isp->isp_dblev = ISP_LOGWARN|ISP_LOGERR; 255 if (bootverbose) 256 isp->isp_dblev |= ISP_LOGCONFIG|ISP_LOGINFO; 257 #ifdef SCSIDEBUG 258 isp->isp_dblev |= ISP_LOGDEBUG1|ISP_LOGDEBUG2; 259 #endif 260 #ifdef DEBUG 261 isp->isp_dblev |= ISP_LOGDEBUG0; 262 #endif 263 #endif 264 265 isp->isp_confopts = self->dv_cfdata->cf_flags; 266 isp->isp_role = ISP_DEFAULT_ROLES; 267 268 /* 269 * There's no tool on sparc to set NVRAM for ISPs, so ignore it. 270 */ 271 isp->isp_confopts |= ISP_CFG_NONVRAM; 272 ISP_LOCK(isp); 273 isp->isp_osinfo.no_mbox_ints = 1; 274 isp_reset(isp); 275 if (isp->isp_state != ISP_RESETSTATE) { 276 ISP_UNLOCK(isp); 277 return; 278 } 279 ENABLE_INTS(isp); 280 isp_init(isp); 281 if (isp->isp_state != ISP_INITSTATE) { 282 isp_uninit(isp); 283 ISP_UNLOCK(isp); 284 return; 285 } 286 287 /* 288 * do generic attach. 289 */ 290 ISP_UNLOCK(isp); 291 isp_attach(isp); 292 if (isp->isp_state != ISP_RUNSTATE) { 293 ISP_LOCK(isp); 294 isp_uninit(isp); 295 ISP_UNLOCK(isp); 296 } 297 } 298 299 300 static void 301 isp_sbus_reset1(struct ispsoftc *isp) 302 { 303 if (isp->isp_osinfo.no_mbox_ints == 0) { 304 ENABLE_INTS(isp); 305 } 306 307 } 308 309 static int 310 isp_sbus_intr(void *arg) 311 { 312 u_int16_t isr, sema, mbox; 313 struct ispsoftc *isp = arg; 314 315 if (ISP_READ_ISR(isp, &isr, &sema, &mbox) == 0) { 316 isp->isp_intbogus++; 317 return (0); 318 } else { 319 struct isp_sbussoftc *sbc = arg; 320 sbc->sbus_isp.isp_osinfo.onintstack = 1; 321 isp_intr(isp, isr, sema, mbox); 322 sbc->sbus_isp.isp_osinfo.onintstack = 0; 323 return (1); 324 } 325 } 326 327 #define IspVirt2Off(a, x) \ 328 (((struct isp_sbussoftc *)a)->sbus_poff[((x) & _BLK_REG_MASK) >> \ 329 _BLK_REG_SHFT] + ((x) & 0xff)) 330 331 #define BXR2(sbc, off) \ 332 bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, off) 333 334 static int 335 isp_sbus_rd_isr(struct ispsoftc *isp, u_int16_t *isrp, 336 u_int16_t *semap, u_int16_t *mbp) 337 { 338 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 339 u_int16_t isr, sema; 340 341 isr = BXR2(sbc, IspVirt2Off(isp, BIU_ISR)); 342 sema = BXR2(sbc, IspVirt2Off(isp, BIU_SEMA)); 343 isp_prt(isp, ISP_LOGDEBUG3, "ISR 0x%x SEMA 0x%x", isr, sema); 344 isr &= INT_PENDING_MASK(isp); 345 sema &= BIU_SEMA_LOCK; 346 if (isr == 0 && sema == 0) { 347 return (0); 348 } 349 *isrp = isr; 350 if ((*semap = sema) != 0) { 351 *mbp = BXR2(sbc, IspVirt2Off(isp, OUTMAILBOX0)); 352 } 353 return (1); 354 } 355 356 static u_int16_t 357 isp_sbus_rd_reg(struct ispsoftc *isp, int regoff) 358 { 359 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 360 int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 361 offset += (regoff & 0xff); 362 return (bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, offset)); 363 } 364 365 static void 366 isp_sbus_wr_reg(struct ispsoftc *isp, int regoff, u_int16_t val) 367 { 368 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 369 int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 370 offset += (regoff & 0xff); 371 bus_space_write_2(sbc->sbus_bustag, sbc->sbus_reg, offset, val); 372 } 373 374 static int 375 isp_sbus_mbxdma(struct ispsoftc *isp) 376 { 377 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 378 bus_dma_segment_t reqseg, rspseg; 379 int reqrs, rsprs, i, progress; 380 size_t n; 381 bus_size_t len; 382 383 if (isp->isp_rquest_dma) 384 return (0); 385 386 n = isp->isp_maxcmds * sizeof (XS_T *); 387 isp->isp_xflist = (XS_T **) malloc(n, M_DEVBUF, M_WAITOK); 388 if (isp->isp_xflist == NULL) { 389 isp_prt(isp, ISP_LOGERR, "cannot alloc xflist array"); 390 return (1); 391 } 392 MEMZERO(isp->isp_xflist, n); 393 n = sizeof (bus_dmamap_t) * isp->isp_maxcmds; 394 sbc->sbus_dmamap = (bus_dmamap_t *) malloc(n, M_DEVBUF, M_WAITOK); 395 if (sbc->sbus_dmamap == NULL) { 396 free(isp->isp_xflist, M_DEVBUF); 397 isp->isp_xflist = NULL; 398 isp_prt(isp, ISP_LOGERR, "cannot alloc dmamap array"); 399 return (1); 400 } 401 for (i = 0; i < isp->isp_maxcmds; i++) { 402 /* Allocate a DMA handle */ 403 if (bus_dmamap_create(isp->isp_dmatag, MAXPHYS, 1, MAXPHYS, 0, 404 BUS_DMA_NOWAIT, &sbc->sbus_dmamap[i]) != 0) { 405 isp_prt(isp, ISP_LOGERR, "cmd DMA maps create error"); 406 break; 407 } 408 } 409 if (i < isp->isp_maxcmds) { 410 while (--i >= 0) { 411 bus_dmamap_destroy(isp->isp_dmatag, 412 sbc->sbus_dmamap[i]); 413 } 414 free(isp->isp_xflist, M_DEVBUF); 415 free(sbc->sbus_dmamap, M_DEVBUF); 416 isp->isp_xflist = NULL; 417 sbc->sbus_dmamap = NULL; 418 return (1); 419 } 420 421 /* 422 * Allocate and map the request and response queues 423 */ 424 progress = 0; 425 len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); 426 if (bus_dmamem_alloc(isp->isp_dmatag, len, 0, 0, &reqseg, 1, &reqrs, 427 BUS_DMA_NOWAIT)) { 428 goto dmafail; 429 } 430 progress++; 431 if (bus_dmamem_map(isp->isp_dmatag, &reqseg, reqrs, len, 432 (caddr_t *)&isp->isp_rquest, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 433 goto dmafail; 434 } 435 progress++; 436 if (bus_dmamap_create(isp->isp_dmatag, len, 1, len, 0, BUS_DMA_NOWAIT, 437 &isp->isp_rqdmap) != 0) { 438 goto dmafail; 439 } 440 progress++; 441 if (bus_dmamap_load(isp->isp_dmatag, isp->isp_rqdmap, 442 isp->isp_rquest, len, NULL, BUS_DMA_NOWAIT) != 0) { 443 goto dmafail; 444 } 445 progress++; 446 isp->isp_rquest_dma = isp->isp_rqdmap->dm_segs[0].ds_addr; 447 448 len = ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp)); 449 if (bus_dmamem_alloc(isp->isp_dmatag, len, 0, 0, &rspseg, 1, &rsprs, 450 BUS_DMA_NOWAIT)) { 451 goto dmafail; 452 } 453 progress++; 454 if (bus_dmamem_map(isp->isp_dmatag, &rspseg, rsprs, len, 455 (caddr_t *)&isp->isp_result, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 456 goto dmafail; 457 } 458 progress++; 459 if (bus_dmamap_create(isp->isp_dmatag, len, 1, len, 0, BUS_DMA_NOWAIT, 460 &isp->isp_rsdmap) != 0) { 461 goto dmafail; 462 } 463 progress++; 464 if (bus_dmamap_load(isp->isp_dmatag, isp->isp_rsdmap, 465 isp->isp_result, len, NULL, BUS_DMA_NOWAIT) != 0) { 466 goto dmafail; 467 } 468 isp->isp_result_dma = isp->isp_rsdmap->dm_segs[0].ds_addr; 469 470 return (0); 471 472 dmafail: 473 isp_prt(isp, ISP_LOGERR, "Mailbox DMA Setup Failure"); 474 475 if (progress >= 8) { 476 bus_dmamap_unload(isp->isp_dmatag, isp->isp_rsdmap); 477 } 478 if (progress >= 7) { 479 bus_dmamap_destroy(isp->isp_dmatag, isp->isp_rsdmap); 480 } 481 if (progress >= 6) { 482 bus_dmamem_unmap(isp->isp_dmatag, 483 isp->isp_result, ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp))); 484 } 485 if (progress >= 5) { 486 bus_dmamem_free(isp->isp_dmatag, &rspseg, rsprs); 487 } 488 489 if (progress >= 4) { 490 bus_dmamap_unload(isp->isp_dmatag, isp->isp_rqdmap); 491 } 492 if (progress >= 3) { 493 bus_dmamap_destroy(isp->isp_dmatag, isp->isp_rqdmap); 494 } 495 if (progress >= 2) { 496 bus_dmamem_unmap(isp->isp_dmatag, 497 isp->isp_rquest, ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp))); 498 } 499 if (progress >= 1) { 500 bus_dmamem_free(isp->isp_dmatag, &reqseg, reqrs); 501 } 502 503 for (i = 0; i < isp->isp_maxcmds; i++) { 504 bus_dmamap_destroy(isp->isp_dmatag, sbc->sbus_dmamap[i]); 505 } 506 free(sbc->sbus_dmamap, M_DEVBUF); 507 free(isp->isp_xflist, M_DEVBUF); 508 isp->isp_xflist = NULL; 509 sbc->sbus_dmamap = NULL; 510 return (1); 511 } 512 513 /* 514 * Map a DMA request. 515 * We're guaranteed that rq->req_handle is a value from 1 to isp->isp_maxcmds. 516 */ 517 518 static int 519 isp_sbus_dmasetup(struct ispsoftc *isp, XS_T *xs, ispreq_t *rq, 520 u_int16_t *nxtip, u_int16_t optr) 521 { 522 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 523 bus_dmamap_t dmap; 524 ispreq_t *qep; 525 int error, cansleep = (xs->xs_control & XS_CTL_NOSLEEP) == 0; 526 int in = (xs->xs_control & XS_CTL_DATA_IN) != 0; 527 528 qep = (ispreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, isp->isp_reqidx); 529 if (xs->datalen == 0) { 530 rq->req_seg_count = 1; 531 goto mbxsync; 532 } 533 534 dmap = sbc->sbus_dmamap[isp_handle_index(rq->req_handle)]; 535 if (dmap->dm_nsegs != 0) { 536 panic("%s: dma map already allocated\n", isp->isp_name); 537 /* NOTREACHED */ 538 } 539 error = bus_dmamap_load(isp->isp_dmatag, dmap, xs->data, xs->datalen, 540 NULL, (cansleep ? BUS_DMA_WAITOK : BUS_DMA_NOWAIT) | 541 BUS_DMA_STREAMING); 542 if (error != 0) { 543 XS_SETERR(xs, HBA_BOTCH); 544 if (error == EAGAIN || error == ENOMEM) 545 return (CMD_EAGAIN); 546 else 547 return (CMD_COMPLETE); 548 } 549 550 bus_dmamap_sync(isp->isp_dmatag, dmap, 0, xs->datalen, 551 in? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 552 553 if (in) { 554 rq->req_flags |= REQFLAG_DATA_IN; 555 } else { 556 rq->req_flags |= REQFLAG_DATA_OUT; 557 } 558 559 if (XS_CDBLEN(xs) > 12) { 560 u_int16_t onxti; 561 ispcontreq_t local, *crq = &local, *cqe; 562 563 onxti = *nxtip; 564 cqe = (ispcontreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, onxti); 565 *nxtip = ISP_NXT_QENTRY(onxti, RQUEST_QUEUE_LEN(isp)); 566 if (*nxtip == optr) { 567 isp_prt(isp, ISP_LOGDEBUG0, "Request Queue Overflow++"); 568 bus_dmamap_unload(isp->isp_dmatag, dmap); 569 XS_SETERR(xs, HBA_BOTCH); 570 return (CMD_EAGAIN); 571 } 572 rq->req_seg_count = 2; 573 MEMZERO((void *)crq, sizeof (*crq)); 574 crq->req_header.rqs_entry_count = 1; 575 crq->req_header.rqs_entry_type = RQSTYPE_DATASEG; 576 crq->req_dataseg[0].ds_count = xs->datalen; 577 crq->req_dataseg[0].ds_base = dmap->dm_segs[0].ds_addr; 578 isp_put_cont_req(isp, crq, cqe); 579 MEMORYBARRIER(isp, SYNC_REQUEST, onxti, QENTRY_LEN); 580 } else { 581 rq->req_seg_count = 1; 582 rq->req_dataseg[0].ds_count = xs->datalen; 583 rq->req_dataseg[0].ds_base = dmap->dm_segs[0].ds_addr; 584 } 585 586 mbxsync: 587 if (XS_CDBLEN(xs) > 12) { 588 isp_put_extended_request(isp, 589 (ispextreq_t *)rq, (ispextreq_t *) qep); 590 } else { 591 isp_put_request(isp, rq, qep); 592 } 593 return (CMD_QUEUED); 594 } 595 596 static void 597 isp_sbus_dmateardown(struct ispsoftc *isp, XS_T *xs, u_int16_t handle) 598 { 599 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 600 bus_dmamap_t dmap; 601 602 dmap = sbc->sbus_dmamap[isp_handle_index(handle)]; 603 604 if (dmap->dm_nsegs == 0) { 605 panic("%s: dma map not already allocated\n", isp->isp_name); 606 /* NOTREACHED */ 607 } 608 bus_dmamap_sync(isp->isp_dmatag, dmap, 0, 609 xs->datalen, (xs->xs_control & XS_CTL_DATA_IN)? 610 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 611 bus_dmamap_unload(isp->isp_dmatag, dmap); 612 } 613