1 /* $NetBSD: isp_sbus.c,v 1.58 2002/10/02 16:52:39 thorpej 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 1.58 2002/10/02 16:52:39 thorpej 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 CFATTACH_DECL(isp_sbus, sizeof (struct isp_sbussoftc), 122 isp_match, isp_sbus_attach, NULL, NULL); 123 124 static int 125 isp_match(struct device *parent, struct cfdata *cf, void *aux) 126 { 127 int rv; 128 #ifdef DEBUG 129 static int oneshot = 1; 130 #endif 131 struct sbus_attach_args *sa = aux; 132 133 rv = (strcmp(cf->cf_name, sa->sa_name) == 0 || 134 strcmp("PTI,ptisp", sa->sa_name) == 0 || 135 strcmp("ptisp", sa->sa_name) == 0 || 136 strcmp("SUNW,isp", sa->sa_name) == 0 || 137 strcmp("QLGC,isp", sa->sa_name) == 0); 138 #ifdef DEBUG 139 if (rv && oneshot) { 140 oneshot = 0; 141 printf("Qlogic ISP Driver, NetBSD (sbus) Platform Version " 142 "%d.%d Core Version %d.%d\n", 143 ISP_PLATFORM_VERSION_MAJOR, ISP_PLATFORM_VERSION_MINOR, 144 ISP_CORE_VERSION_MAJOR, ISP_CORE_VERSION_MINOR); 145 } 146 #endif 147 return (rv); 148 } 149 150 151 static void 152 isp_sbus_attach(struct device *parent, struct device *self, void *aux) 153 { 154 int freq, ispburst, sbusburst; 155 struct sbus_attach_args *sa = aux; 156 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) self; 157 struct ispsoftc *isp = &sbc->sbus_isp; 158 159 printf(" for %s\n", sa->sa_name); 160 161 sbc->sbus_bustag = sa->sa_bustag; 162 if (sa->sa_nintr != 0) 163 sbc->sbus_pri = sa->sa_pri; 164 sbc->sbus_mdvec = mdvec; 165 166 if (sa->sa_npromvaddrs) { 167 sbus_promaddr_to_handle(sa->sa_bustag, 168 sa->sa_promvaddrs[0], &sbc->sbus_reg); 169 } else { 170 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, sa->sa_offset, 171 sa->sa_size, 0, &sbc->sbus_reg) != 0) { 172 printf("%s: cannot map registers\n", self->dv_xname); 173 return; 174 } 175 } 176 sbc->sbus_node = sa->sa_node; 177 178 freq = PROM_getpropint(sa->sa_node, "clock-frequency", 0); 179 if (freq) { 180 /* 181 * Convert from HZ to MHz, rounding up. 182 */ 183 freq = (freq + 500000)/1000000; 184 #if 0 185 printf("%s: %d MHz\n", self->dv_xname, freq); 186 #endif 187 } 188 sbc->sbus_mdvec.dv_clock = freq; 189 190 /* 191 * Now figure out what the proper burst sizes, etc., to use. 192 * Unfortunately, there is no ddi_dma_burstsizes here which 193 * walks up the tree finding the limiting burst size node (if 194 * any). 195 */ 196 sbusburst = ((struct sbus_softc *)parent)->sc_burst; 197 if (sbusburst == 0) 198 sbusburst = SBUS_BURST_32 - 1; 199 ispburst = PROM_getpropint(sa->sa_node, "burst-sizes", -1); 200 if (ispburst == -1) { 201 ispburst = sbusburst; 202 } 203 ispburst &= sbusburst; 204 ispburst &= ~(1 << 7); 205 ispburst &= ~(1 << 6); 206 sbc->sbus_mdvec.dv_conf1 = 0; 207 if (ispburst & (1 << 5)) { 208 sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_32; 209 } else if (ispburst & (1 << 4)) { 210 sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_16; 211 } else if (ispburst & (1 << 3)) { 212 sbc->sbus_mdvec.dv_conf1 = 213 BIU_SBUS_CONF1_BURST8 | BIU_SBUS_CONF1_FIFO_8; 214 } 215 if (sbc->sbus_mdvec.dv_conf1) { 216 sbc->sbus_mdvec.dv_conf1 |= BIU_BURST_ENABLE; 217 } 218 219 /* 220 * Some early versions of the PTI SBus adapter 221 * would fail in trying to download (via poking) 222 * FW. We give up on them. 223 */ 224 if (strcmp("PTI,ptisp", sa->sa_name) == 0 || 225 strcmp("ptisp", sa->sa_name) == 0) { 226 sbc->sbus_mdvec.dv_ispfw = NULL; 227 } 228 229 isp->isp_mdvec = &sbc->sbus_mdvec; 230 isp->isp_bustype = ISP_BT_SBUS; 231 isp->isp_type = ISP_HA_SCSI_UNKNOWN; 232 isp->isp_param = &sbc->sbus_dev; 233 isp->isp_dmatag = sa->sa_dmatag; 234 MEMZERO(isp->isp_param, sizeof (sdparam)); 235 236 sbc->sbus_poff[BIU_BLOCK >> _BLK_REG_SHFT] = BIU_REGS_OFF; 237 sbc->sbus_poff[MBOX_BLOCK >> _BLK_REG_SHFT] = SBUS_MBOX_REGS_OFF; 238 sbc->sbus_poff[SXP_BLOCK >> _BLK_REG_SHFT] = SBUS_SXP_REGS_OFF; 239 sbc->sbus_poff[RISC_BLOCK >> _BLK_REG_SHFT] = SBUS_RISC_REGS_OFF; 240 sbc->sbus_poff[DMA_BLOCK >> _BLK_REG_SHFT] = DMA_REGS_OFF; 241 242 /* Establish interrupt channel */ 243 bus_intr_establish(sbc->sbus_bustag, sbc->sbus_pri, IPL_BIO, 0, 244 isp_sbus_intr, sbc); 245 sbus_establish(&sbc->sbus_sd, &sbc->sbus_isp.isp_osinfo._dev); 246 247 /* 248 * Set up logging levels. 249 */ 250 #ifdef ISP_LOGDEFAULT 251 isp->isp_dblev = ISP_LOGDEFAULT; 252 #else 253 isp->isp_dblev = ISP_LOGWARN|ISP_LOGERR; 254 if (bootverbose) 255 isp->isp_dblev |= ISP_LOGCONFIG|ISP_LOGINFO; 256 #ifdef SCSIDEBUG 257 isp->isp_dblev |= ISP_LOGDEBUG1|ISP_LOGDEBUG2; 258 #endif 259 #ifdef DEBUG 260 isp->isp_dblev |= ISP_LOGDEBUG0; 261 #endif 262 #endif 263 264 isp->isp_confopts = self->dv_cfdata->cf_flags; 265 isp->isp_role = ISP_DEFAULT_ROLES; 266 267 /* 268 * There's no tool on sparc to set NVRAM for ISPs, so ignore it. 269 */ 270 isp->isp_confopts |= ISP_CFG_NONVRAM; 271 ISP_LOCK(isp); 272 isp->isp_osinfo.no_mbox_ints = 1; 273 isp_reset(isp); 274 if (isp->isp_state != ISP_RESETSTATE) { 275 ISP_UNLOCK(isp); 276 return; 277 } 278 ENABLE_INTS(isp); 279 isp_init(isp); 280 if (isp->isp_state != ISP_INITSTATE) { 281 isp_uninit(isp); 282 ISP_UNLOCK(isp); 283 return; 284 } 285 286 /* 287 * do generic attach. 288 */ 289 ISP_UNLOCK(isp); 290 isp_attach(isp); 291 if (isp->isp_state != ISP_RUNSTATE) { 292 ISP_LOCK(isp); 293 isp_uninit(isp); 294 ISP_UNLOCK(isp); 295 } 296 } 297 298 299 static void 300 isp_sbus_reset1(struct ispsoftc *isp) 301 { 302 if (isp->isp_osinfo.no_mbox_ints == 0) { 303 ENABLE_INTS(isp); 304 } 305 306 } 307 308 static int 309 isp_sbus_intr(void *arg) 310 { 311 u_int16_t isr, sema, mbox; 312 struct ispsoftc *isp = arg; 313 314 if (ISP_READ_ISR(isp, &isr, &sema, &mbox) == 0) { 315 isp->isp_intbogus++; 316 return (0); 317 } else { 318 struct isp_sbussoftc *sbc = arg; 319 sbc->sbus_isp.isp_osinfo.onintstack = 1; 320 isp_intr(isp, isr, sema, mbox); 321 sbc->sbus_isp.isp_osinfo.onintstack = 0; 322 return (1); 323 } 324 } 325 326 #define IspVirt2Off(a, x) \ 327 (((struct isp_sbussoftc *)a)->sbus_poff[((x) & _BLK_REG_MASK) >> \ 328 _BLK_REG_SHFT] + ((x) & 0xff)) 329 330 #define BXR2(sbc, off) \ 331 bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, off) 332 333 static int 334 isp_sbus_rd_isr(struct ispsoftc *isp, u_int16_t *isrp, 335 u_int16_t *semap, u_int16_t *mbp) 336 { 337 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 338 u_int16_t isr, sema; 339 340 isr = BXR2(sbc, IspVirt2Off(isp, BIU_ISR)); 341 sema = BXR2(sbc, IspVirt2Off(isp, BIU_SEMA)); 342 isp_prt(isp, ISP_LOGDEBUG3, "ISR 0x%x SEMA 0x%x", isr, sema); 343 isr &= INT_PENDING_MASK(isp); 344 sema &= BIU_SEMA_LOCK; 345 if (isr == 0 && sema == 0) { 346 return (0); 347 } 348 *isrp = isr; 349 if ((*semap = sema) != 0) { 350 *mbp = BXR2(sbc, IspVirt2Off(isp, OUTMAILBOX0)); 351 } 352 return (1); 353 } 354 355 static u_int16_t 356 isp_sbus_rd_reg(struct ispsoftc *isp, int regoff) 357 { 358 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 359 int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 360 offset += (regoff & 0xff); 361 return (bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, offset)); 362 } 363 364 static void 365 isp_sbus_wr_reg(struct ispsoftc *isp, int regoff, u_int16_t val) 366 { 367 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 368 int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 369 offset += (regoff & 0xff); 370 bus_space_write_2(sbc->sbus_bustag, sbc->sbus_reg, offset, val); 371 } 372 373 static int 374 isp_sbus_mbxdma(struct ispsoftc *isp) 375 { 376 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 377 bus_dma_segment_t reqseg, rspseg; 378 int reqrs, rsprs, i, progress; 379 size_t n; 380 bus_size_t len; 381 382 if (isp->isp_rquest_dma) 383 return (0); 384 385 n = isp->isp_maxcmds * sizeof (XS_T *); 386 isp->isp_xflist = (XS_T **) malloc(n, M_DEVBUF, M_WAITOK); 387 if (isp->isp_xflist == NULL) { 388 isp_prt(isp, ISP_LOGERR, "cannot alloc xflist array"); 389 return (1); 390 } 391 MEMZERO(isp->isp_xflist, n); 392 n = sizeof (bus_dmamap_t) * isp->isp_maxcmds; 393 sbc->sbus_dmamap = (bus_dmamap_t *) malloc(n, M_DEVBUF, M_WAITOK); 394 if (sbc->sbus_dmamap == NULL) { 395 free(isp->isp_xflist, M_DEVBUF); 396 isp->isp_xflist = NULL; 397 isp_prt(isp, ISP_LOGERR, "cannot alloc dmamap array"); 398 return (1); 399 } 400 for (i = 0; i < isp->isp_maxcmds; i++) { 401 /* Allocate a DMA handle */ 402 if (bus_dmamap_create(isp->isp_dmatag, MAXPHYS, 1, MAXPHYS, 0, 403 BUS_DMA_NOWAIT, &sbc->sbus_dmamap[i]) != 0) { 404 isp_prt(isp, ISP_LOGERR, "cmd DMA maps create error"); 405 break; 406 } 407 } 408 if (i < isp->isp_maxcmds) { 409 while (--i >= 0) { 410 bus_dmamap_destroy(isp->isp_dmatag, 411 sbc->sbus_dmamap[i]); 412 } 413 free(isp->isp_xflist, M_DEVBUF); 414 free(sbc->sbus_dmamap, M_DEVBUF); 415 isp->isp_xflist = NULL; 416 sbc->sbus_dmamap = NULL; 417 return (1); 418 } 419 420 /* 421 * Allocate and map the request and response queues 422 */ 423 progress = 0; 424 len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); 425 if (bus_dmamem_alloc(isp->isp_dmatag, len, 0, 0, &reqseg, 1, &reqrs, 426 BUS_DMA_NOWAIT)) { 427 goto dmafail; 428 } 429 progress++; 430 if (bus_dmamem_map(isp->isp_dmatag, &reqseg, reqrs, len, 431 (caddr_t *)&isp->isp_rquest, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 432 goto dmafail; 433 } 434 progress++; 435 if (bus_dmamap_create(isp->isp_dmatag, len, 1, len, 0, BUS_DMA_NOWAIT, 436 &isp->isp_rqdmap) != 0) { 437 goto dmafail; 438 } 439 progress++; 440 if (bus_dmamap_load(isp->isp_dmatag, isp->isp_rqdmap, 441 isp->isp_rquest, len, NULL, BUS_DMA_NOWAIT) != 0) { 442 goto dmafail; 443 } 444 progress++; 445 isp->isp_rquest_dma = isp->isp_rqdmap->dm_segs[0].ds_addr; 446 447 len = ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp)); 448 if (bus_dmamem_alloc(isp->isp_dmatag, len, 0, 0, &rspseg, 1, &rsprs, 449 BUS_DMA_NOWAIT)) { 450 goto dmafail; 451 } 452 progress++; 453 if (bus_dmamem_map(isp->isp_dmatag, &rspseg, rsprs, len, 454 (caddr_t *)&isp->isp_result, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 455 goto dmafail; 456 } 457 progress++; 458 if (bus_dmamap_create(isp->isp_dmatag, len, 1, len, 0, BUS_DMA_NOWAIT, 459 &isp->isp_rsdmap) != 0) { 460 goto dmafail; 461 } 462 progress++; 463 if (bus_dmamap_load(isp->isp_dmatag, isp->isp_rsdmap, 464 isp->isp_result, len, NULL, BUS_DMA_NOWAIT) != 0) { 465 goto dmafail; 466 } 467 isp->isp_result_dma = isp->isp_rsdmap->dm_segs[0].ds_addr; 468 469 return (0); 470 471 dmafail: 472 isp_prt(isp, ISP_LOGERR, "Mailbox DMA Setup Failure"); 473 474 if (progress >= 8) { 475 bus_dmamap_unload(isp->isp_dmatag, isp->isp_rsdmap); 476 } 477 if (progress >= 7) { 478 bus_dmamap_destroy(isp->isp_dmatag, isp->isp_rsdmap); 479 } 480 if (progress >= 6) { 481 bus_dmamem_unmap(isp->isp_dmatag, 482 isp->isp_result, ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp))); 483 } 484 if (progress >= 5) { 485 bus_dmamem_free(isp->isp_dmatag, &rspseg, rsprs); 486 } 487 488 if (progress >= 4) { 489 bus_dmamap_unload(isp->isp_dmatag, isp->isp_rqdmap); 490 } 491 if (progress >= 3) { 492 bus_dmamap_destroy(isp->isp_dmatag, isp->isp_rqdmap); 493 } 494 if (progress >= 2) { 495 bus_dmamem_unmap(isp->isp_dmatag, 496 isp->isp_rquest, ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp))); 497 } 498 if (progress >= 1) { 499 bus_dmamem_free(isp->isp_dmatag, &reqseg, reqrs); 500 } 501 502 for (i = 0; i < isp->isp_maxcmds; i++) { 503 bus_dmamap_destroy(isp->isp_dmatag, sbc->sbus_dmamap[i]); 504 } 505 free(sbc->sbus_dmamap, M_DEVBUF); 506 free(isp->isp_xflist, M_DEVBUF); 507 isp->isp_xflist = NULL; 508 sbc->sbus_dmamap = NULL; 509 return (1); 510 } 511 512 /* 513 * Map a DMA request. 514 * We're guaranteed that rq->req_handle is a value from 1 to isp->isp_maxcmds. 515 */ 516 517 static int 518 isp_sbus_dmasetup(struct ispsoftc *isp, XS_T *xs, ispreq_t *rq, 519 u_int16_t *nxtip, u_int16_t optr) 520 { 521 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 522 bus_dmamap_t dmap; 523 ispreq_t *qep; 524 int error, cansleep = (xs->xs_control & XS_CTL_NOSLEEP) == 0; 525 int in = (xs->xs_control & XS_CTL_DATA_IN) != 0; 526 527 qep = (ispreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, isp->isp_reqidx); 528 if (xs->datalen == 0) { 529 rq->req_seg_count = 1; 530 goto mbxsync; 531 } 532 533 dmap = sbc->sbus_dmamap[isp_handle_index(rq->req_handle)]; 534 if (dmap->dm_nsegs != 0) { 535 panic("%s: dma map already allocated", isp->isp_name); 536 /* NOTREACHED */ 537 } 538 error = bus_dmamap_load(isp->isp_dmatag, dmap, xs->data, xs->datalen, 539 NULL, (cansleep ? BUS_DMA_WAITOK : BUS_DMA_NOWAIT) | 540 BUS_DMA_STREAMING); 541 if (error != 0) { 542 XS_SETERR(xs, HBA_BOTCH); 543 if (error == EAGAIN || error == ENOMEM) 544 return (CMD_EAGAIN); 545 else 546 return (CMD_COMPLETE); 547 } 548 549 bus_dmamap_sync(isp->isp_dmatag, dmap, 0, xs->datalen, 550 in? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 551 552 if (in) { 553 rq->req_flags |= REQFLAG_DATA_IN; 554 } else { 555 rq->req_flags |= REQFLAG_DATA_OUT; 556 } 557 558 if (XS_CDBLEN(xs) > 12) { 559 u_int16_t onxti; 560 ispcontreq_t local, *crq = &local, *cqe; 561 562 onxti = *nxtip; 563 cqe = (ispcontreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, onxti); 564 *nxtip = ISP_NXT_QENTRY(onxti, RQUEST_QUEUE_LEN(isp)); 565 if (*nxtip == optr) { 566 isp_prt(isp, ISP_LOGDEBUG0, "Request Queue Overflow++"); 567 bus_dmamap_unload(isp->isp_dmatag, dmap); 568 XS_SETERR(xs, HBA_BOTCH); 569 return (CMD_EAGAIN); 570 } 571 rq->req_seg_count = 2; 572 MEMZERO((void *)crq, sizeof (*crq)); 573 crq->req_header.rqs_entry_count = 1; 574 crq->req_header.rqs_entry_type = RQSTYPE_DATASEG; 575 crq->req_dataseg[0].ds_count = xs->datalen; 576 crq->req_dataseg[0].ds_base = dmap->dm_segs[0].ds_addr; 577 isp_put_cont_req(isp, crq, cqe); 578 MEMORYBARRIER(isp, SYNC_REQUEST, onxti, QENTRY_LEN); 579 } else { 580 rq->req_seg_count = 1; 581 rq->req_dataseg[0].ds_count = xs->datalen; 582 rq->req_dataseg[0].ds_base = dmap->dm_segs[0].ds_addr; 583 } 584 585 mbxsync: 586 if (XS_CDBLEN(xs) > 12) { 587 isp_put_extended_request(isp, 588 (ispextreq_t *)rq, (ispextreq_t *) qep); 589 } else { 590 isp_put_request(isp, rq, qep); 591 } 592 return (CMD_QUEUED); 593 } 594 595 static void 596 isp_sbus_dmateardown(struct ispsoftc *isp, XS_T *xs, u_int16_t handle) 597 { 598 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 599 bus_dmamap_t dmap; 600 601 dmap = sbc->sbus_dmamap[isp_handle_index(handle)]; 602 603 if (dmap->dm_nsegs == 0) { 604 panic("%s: dma map not already allocated", isp->isp_name); 605 /* NOTREACHED */ 606 } 607 bus_dmamap_sync(isp->isp_dmatag, dmap, 0, 608 xs->datalen, (xs->xs_control & XS_CTL_DATA_IN)? 609 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 610 bus_dmamap_unload(isp->isp_dmatag, dmap); 611 } 612