isp_sbus.c revision 1.40.2.7
1 /* $NetBSD: isp_sbus.c,v 1.40.2.7 2002/01/08 00:31:42 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 1.40.2.7 2002/01/08 00:31:42 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 #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 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_space_handle_t sbus_reg; 110 int sbus_node; 111 int sbus_pri; 112 struct ispmdvec sbus_mdvec; 113 bus_dmamap_t *sbus_dmamap; 114 int16_t sbus_poff[_NREG_BLKS]; 115 }; 116 117 118 static int isp_match(struct device *, struct cfdata *, void *); 119 static void isp_sbus_attach(struct device *, struct device *, void *); 120 struct cfattach isp_sbus_ca = { 121 sizeof (struct isp_sbussoftc), isp_match, isp_sbus_attach 122 }; 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_driver->cd_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 != 0) { 167 sbc->sbus_reg = (bus_space_handle_t)sa->sa_promvaddrs[0]; 168 } else { 169 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, sa->sa_offset, 170 sa->sa_size, BUS_SPACE_MAP_LINEAR, 0, 171 &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 static int 299 isp_sbus_intr(void *arg) 300 { 301 u_int16_t isr, sema, mbox; 302 struct ispsoftc *isp = arg; 303 304 if (ISP_READ_ISR(isp, &isr, &sema, &mbox) == 0) { 305 isp->isp_intbogus++; 306 return (0); 307 } else { 308 struct isp_sbussoftc *sbc = arg; 309 sbc->sbus_isp.isp_osinfo.onintstack = 1; 310 isp_intr(isp, isr, sema, mbox); 311 sbc->sbus_isp.isp_osinfo.onintstack = 0; 312 return (1); 313 } 314 } 315 316 #define IspVirt2Off(a, x) \ 317 (((struct isp_sbussoftc *)a)->sbus_poff[((x) & _BLK_REG_MASK) >> \ 318 _BLK_REG_SHFT] + ((x) & 0xff)) 319 320 #define BXR2(sbc, off) \ 321 bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, off) 322 323 static int 324 isp_sbus_rd_isr(struct ispsoftc *isp, u_int16_t *isrp, 325 u_int16_t *semap, u_int16_t *mbp) 326 { 327 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 328 u_int16_t isr, sema; 329 330 isr = BXR2(sbc, IspVirt2Off(isp, BIU_ISR)); 331 sema = BXR2(sbc, IspVirt2Off(isp, BIU_SEMA)); 332 isp_prt(isp, ISP_LOGDEBUG3, "ISR 0x%x SEMA 0x%x", isr, sema); 333 isr &= INT_PENDING_MASK(isp); 334 sema &= BIU_SEMA_LOCK; 335 if (isr == 0 && sema == 0) { 336 return (0); 337 } 338 *isrp = isr; 339 if ((*semap = sema) != 0) { 340 *mbp = BXR2(sbc, IspVirt2Off(isp, OUTMAILBOX0)); 341 } 342 return (1); 343 } 344 345 static u_int16_t 346 isp_sbus_rd_reg(struct ispsoftc *isp, int regoff) 347 { 348 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 349 int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 350 offset += (regoff & 0xff); 351 return (bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, offset)); 352 } 353 354 static void 355 isp_sbus_wr_reg(struct ispsoftc *isp, int regoff, u_int16_t val) 356 { 357 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 358 int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 359 offset += (regoff & 0xff); 360 bus_space_write_2(sbc->sbus_bustag, sbc->sbus_reg, offset, val); 361 } 362 363 static int 364 isp_sbus_mbxdma(struct ispsoftc *isp) 365 { 366 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 367 bus_dma_segment_t reqseg, rspseg; 368 int reqrs, rsprs, i, progress; 369 size_t n; 370 bus_size_t len; 371 372 if (isp->isp_rquest_dma) 373 return (0); 374 375 n = isp->isp_maxcmds * sizeof (XS_T *); 376 isp->isp_xflist = (XS_T **) malloc(n, M_DEVBUF, M_WAITOK); 377 if (isp->isp_xflist == NULL) { 378 isp_prt(isp, ISP_LOGERR, "cannot alloc xflist array"); 379 return (1); 380 } 381 MEMZERO(isp->isp_xflist, n); 382 n = sizeof (bus_dmamap_t) * isp->isp_maxcmds; 383 sbc->sbus_dmamap = (bus_dmamap_t *) malloc(n, M_DEVBUF, M_WAITOK); 384 if (sbc->sbus_dmamap == NULL) { 385 free(isp->isp_xflist, M_DEVBUF); 386 isp->isp_xflist = NULL; 387 isp_prt(isp, ISP_LOGERR, "cannot alloc dmamap array"); 388 return (1); 389 } 390 for (i = 0; i < isp->isp_maxcmds; i++) { 391 /* Allocate a DMA handle */ 392 if (bus_dmamap_create(isp->isp_dmatag, MAXPHYS, 1, MAXPHYS, 0, 393 BUS_DMA_NOWAIT, &sbc->sbus_dmamap[i]) != 0) { 394 isp_prt(isp, ISP_LOGERR, "cmd DMA maps create error"); 395 break; 396 } 397 } 398 if (i < isp->isp_maxcmds) { 399 while (--i >= 0) { 400 bus_dmamap_destroy(isp->isp_dmatag, 401 sbc->sbus_dmamap[i]); 402 } 403 free(isp->isp_xflist, M_DEVBUF); 404 free(sbc->sbus_dmamap, M_DEVBUF); 405 isp->isp_xflist = NULL; 406 sbc->sbus_dmamap = NULL; 407 return (1); 408 } 409 410 /* 411 * Allocate and map the request and response queues 412 */ 413 progress = 0; 414 len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); 415 if (bus_dmamem_alloc(isp->isp_dmatag, len, 0, 0, &reqseg, 1, &reqrs, 416 BUS_DMA_NOWAIT)) { 417 goto dmafail; 418 } 419 progress++; 420 if (bus_dmamem_map(isp->isp_dmatag, &reqseg, reqrs, len, 421 (caddr_t *)&isp->isp_rquest, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 422 goto dmafail; 423 } 424 progress++; 425 if (bus_dmamap_create(isp->isp_dmatag, len, 1, len, 0, BUS_DMA_NOWAIT, 426 &isp->isp_rqdmap) != 0) { 427 goto dmafail; 428 } 429 progress++; 430 if (bus_dmamap_load(isp->isp_dmatag, isp->isp_rqdmap, 431 isp->isp_rquest, len, NULL, BUS_DMA_NOWAIT) != 0) { 432 goto dmafail; 433 } 434 progress++; 435 isp->isp_rquest_dma = isp->isp_rqdmap->dm_segs[0].ds_addr; 436 437 len = ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp)); 438 if (bus_dmamem_alloc(isp->isp_dmatag, len, 0, 0, &rspseg, 1, &rsprs, 439 BUS_DMA_NOWAIT)) { 440 goto dmafail; 441 } 442 progress++; 443 if (bus_dmamem_map(isp->isp_dmatag, &rspseg, rsprs, len, 444 (caddr_t *)&isp->isp_result, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 445 goto dmafail; 446 } 447 progress++; 448 if (bus_dmamap_create(isp->isp_dmatag, len, 1, len, 0, BUS_DMA_NOWAIT, 449 &isp->isp_rsdmap) != 0) { 450 goto dmafail; 451 } 452 progress++; 453 if (bus_dmamap_load(isp->isp_dmatag, isp->isp_rsdmap, 454 isp->isp_result, len, NULL, BUS_DMA_NOWAIT) != 0) { 455 goto dmafail; 456 } 457 isp->isp_result_dma = isp->isp_rsdmap->dm_segs[0].ds_addr; 458 459 return (0); 460 461 dmafail: 462 isp_prt(isp, ISP_LOGERR, "Mailbox DMA Setup Failure"); 463 464 if (progress >= 8) { 465 bus_dmamap_unload(isp->isp_dmatag, isp->isp_rsdmap); 466 } 467 if (progress >= 7) { 468 bus_dmamap_destroy(isp->isp_dmatag, isp->isp_rsdmap); 469 } 470 if (progress >= 6) { 471 bus_dmamem_unmap(isp->isp_dmatag, 472 isp->isp_result, ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp))); 473 } 474 if (progress >= 5) { 475 bus_dmamem_free(isp->isp_dmatag, &rspseg, rsprs); 476 } 477 478 if (progress >= 4) { 479 bus_dmamap_unload(isp->isp_dmatag, isp->isp_rqdmap); 480 } 481 if (progress >= 3) { 482 bus_dmamap_destroy(isp->isp_dmatag, isp->isp_rqdmap); 483 } 484 if (progress >= 2) { 485 bus_dmamem_unmap(isp->isp_dmatag, 486 isp->isp_rquest, ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp))); 487 } 488 if (progress >= 1) { 489 bus_dmamem_free(isp->isp_dmatag, &reqseg, reqrs); 490 } 491 492 for (i = 0; i < isp->isp_maxcmds; i++) { 493 bus_dmamap_destroy(isp->isp_dmatag, sbc->sbus_dmamap[i]); 494 } 495 free(sbc->sbus_dmamap, M_DEVBUF); 496 free(isp->isp_xflist, M_DEVBUF); 497 isp->isp_xflist = NULL; 498 sbc->sbus_dmamap = NULL; 499 return (1); 500 } 501 502 /* 503 * Map a DMA request. 504 * We're guaranteed that rq->req_handle is a value from 1 to isp->isp_maxcmds. 505 */ 506 507 static int 508 isp_sbus_dmasetup(struct ispsoftc *isp, XS_T *xs, ispreq_t *rq, 509 u_int16_t *nxtip, u_int16_t optr) 510 { 511 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 512 bus_dmamap_t dmap; 513 ispreq_t *qep; 514 int cansleep = (xs->xs_control & XS_CTL_NOSLEEP) == 0; 515 int in = (xs->xs_control & XS_CTL_DATA_IN) != 0; 516 517 qep = (ispreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, isp->isp_reqidx); 518 if (xs->datalen == 0) { 519 rq->req_seg_count = 1; 520 goto mbxsync; 521 } 522 523 dmap = sbc->sbus_dmamap[isp_handle_index(rq->req_handle)]; 524 if (dmap->dm_nsegs != 0) { 525 panic("%s: dma map already allocated\n", isp->isp_name); 526 /* NOTREACHED */ 527 } 528 if (bus_dmamap_load(isp->isp_dmatag, dmap, xs->data, xs->datalen, 529 NULL, (cansleep ? BUS_DMA_WAITOK : BUS_DMA_NOWAIT) | 530 BUS_DMA_STREAMING) != 0) { 531 XS_SETERR(xs, HBA_BOTCH); 532 return (CMD_COMPLETE); 533 } 534 535 bus_dmamap_sync(isp->isp_dmatag, dmap, 0, xs->datalen, 536 in? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 537 538 if (in) { 539 rq->req_flags |= REQFLAG_DATA_IN; 540 } else { 541 rq->req_flags |= REQFLAG_DATA_OUT; 542 } 543 544 if (XS_CDBLEN(xs) > 12) { 545 u_int16_t onxti; 546 ispcontreq_t local, *crq = &local, *cqe; 547 548 onxti = *nxtip; 549 cqe = (ispcontreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, onxti); 550 *nxtip = ISP_NXT_QENTRY(onxti, RQUEST_QUEUE_LEN(isp)); 551 if (*nxtip == optr) { 552 isp_prt(isp, ISP_LOGDEBUG0, "Request Queue Overflow++"); 553 bus_dmamap_unload(isp->isp_dmatag, dmap); 554 XS_SETERR(xs, HBA_BOTCH); 555 return (CMD_EAGAIN); 556 } 557 rq->req_seg_count = 2; 558 MEMZERO((void *)crq, sizeof (*crq)); 559 crq->req_header.rqs_entry_count = 1; 560 crq->req_header.rqs_entry_type = RQSTYPE_DATASEG; 561 crq->req_dataseg[0].ds_count = xs->datalen; 562 crq->req_dataseg[0].ds_base = dmap->dm_segs[0].ds_addr; 563 isp_put_cont_req(isp, crq, cqe); 564 MEMORYBARRIER(isp, SYNC_REQUEST, onxti, QENTRY_LEN); 565 } else { 566 rq->req_seg_count = 1; 567 rq->req_dataseg[0].ds_count = xs->datalen; 568 rq->req_dataseg[0].ds_base = dmap->dm_segs[0].ds_addr; 569 } 570 571 mbxsync: 572 if (XS_CDBLEN(xs) > 12) { 573 isp_put_extended_request(isp, 574 (ispextreq_t *)rq, (ispextreq_t *) qep); 575 } else { 576 isp_put_request(isp, rq, qep); 577 } 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(isp->isp_dmatag, dmap, 0, 594 xs->datalen, (xs->xs_control & XS_CTL_DATA_IN)? 595 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 596 bus_dmamap_unload(isp->isp_dmatag, dmap); 597 } 598
Indexes created Tue Oct 21 19:09:51 GMT 2025