isp_sbus.c revision 1.67
1 /* $NetBSD: isp_sbus.c,v 1.67 2007/03/04 06:02:40 christos 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 1.67 2007/03/04 06:02:40 christos 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 0, 104 0 105 }; 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_space_handle_t sbus_reg; 113 int sbus_node; 114 int sbus_pri; 115 struct ispmdvec sbus_mdvec; 116 bus_dmamap_t *sbus_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 CFATTACH_DECL(isp_sbus, sizeof (struct isp_sbussoftc), 124 isp_match, isp_sbus_attach, NULL, NULL); 125 126 static int 127 isp_match(struct device *parent, struct cfdata *cf, void *aux) 128 { 129 int rv; 130 #ifdef DEBUG 131 static int oneshot = 1; 132 #endif 133 struct sbus_attach_args *sa = aux; 134 135 rv = (strcmp(cf->cf_name, sa->sa_name) == 0 || 136 strcmp("PTI,ptisp", sa->sa_name) == 0 || 137 strcmp("ptisp", sa->sa_name) == 0 || 138 strcmp("SUNW,isp", sa->sa_name) == 0 || 139 strcmp("QLGC,isp", sa->sa_name) == 0); 140 #ifdef DEBUG 141 if (rv && oneshot) { 142 oneshot = 0; 143 printf("Qlogic ISP Driver, NetBSD (sbus) Platform Version " 144 "%d.%d Core Version %d.%d\n", 145 ISP_PLATFORM_VERSION_MAJOR, ISP_PLATFORM_VERSION_MINOR, 146 ISP_CORE_VERSION_MAJOR, ISP_CORE_VERSION_MINOR); 147 } 148 #endif 149 return (rv); 150 } 151 152 153 static void 154 isp_sbus_attach(struct device *parent, struct device *self, void *aux) 155 { 156 int freq, ispburst, sbusburst; 157 struct sbus_attach_args *sa = aux; 158 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) self; 159 struct ispsoftc *isp = &sbc->sbus_isp; 160 161 printf(" for %s\n", sa->sa_name); 162 163 sbc->sbus_bustag = sa->sa_bustag; 164 if (sa->sa_nintr != 0) 165 sbc->sbus_pri = sa->sa_pri; 166 sbc->sbus_mdvec = mdvec; 167 168 if (sa->sa_npromvaddrs) { 169 sbus_promaddr_to_handle(sa->sa_bustag, 170 sa->sa_promvaddrs[0], &sbc->sbus_reg); 171 } else { 172 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, sa->sa_offset, 173 sa->sa_size, 0, &sbc->sbus_reg) != 0) { 174 printf("%s: cannot map registers\n", self->dv_xname); 175 return; 176 } 177 } 178 sbc->sbus_node = sa->sa_node; 179 180 freq = prom_getpropint(sa->sa_node, "clock-frequency", 0); 181 if (freq) { 182 /* 183 * Convert from HZ to MHz, rounding up. 184 */ 185 freq = (freq + 500000)/1000000; 186 #if 0 187 printf("%s: %d MHz\n", self->dv_xname, freq); 188 #endif 189 } 190 sbc->sbus_mdvec.dv_clock = freq; 191 192 /* 193 * Now figure out what the proper burst sizes, etc., to use. 194 * Unfortunately, there is no ddi_dma_burstsizes here which 195 * walks up the tree finding the limiting burst size node (if 196 * any). 197 */ 198 sbusburst = ((struct sbus_softc *)parent)->sc_burst; 199 if (sbusburst == 0) 200 sbusburst = SBUS_BURST_32 - 1; 201 ispburst = prom_getpropint(sa->sa_node, "burst-sizes", -1); 202 if (ispburst == -1) { 203 ispburst = sbusburst; 204 } 205 ispburst &= sbusburst; 206 ispburst &= ~(1 << 7); 207 ispburst &= ~(1 << 6); 208 sbc->sbus_mdvec.dv_conf1 = 0; 209 if (ispburst & (1 << 5)) { 210 sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_32; 211 } else if (ispburst & (1 << 4)) { 212 sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_16; 213 } else if (ispburst & (1 << 3)) { 214 sbc->sbus_mdvec.dv_conf1 = 215 BIU_SBUS_CONF1_BURST8 | BIU_SBUS_CONF1_FIFO_8; 216 } 217 if (sbc->sbus_mdvec.dv_conf1) { 218 sbc->sbus_mdvec.dv_conf1 |= BIU_BURST_ENABLE; 219 } 220 221 /* 222 * Some early versions of the PTI SBus adapter 223 * would fail in trying to download (via poking) 224 * FW. We give up on them. 225 */ 226 if (strcmp("PTI,ptisp", sa->sa_name) == 0 || 227 strcmp("ptisp", sa->sa_name) == 0) { 228 sbc->sbus_mdvec.dv_ispfw = NULL; 229 } 230 231 isp->isp_mdvec = &sbc->sbus_mdvec; 232 isp->isp_bustype = ISP_BT_SBUS; 233 isp->isp_type = ISP_HA_SCSI_UNKNOWN; 234 isp->isp_param = &sbc->sbus_dev; 235 isp->isp_dmatag = sa->sa_dmatag; 236 MEMZERO(isp->isp_param, sizeof (sdparam)); 237 238 sbc->sbus_poff[BIU_BLOCK >> _BLK_REG_SHFT] = BIU_REGS_OFF; 239 sbc->sbus_poff[MBOX_BLOCK >> _BLK_REG_SHFT] = SBUS_MBOX_REGS_OFF; 240 sbc->sbus_poff[SXP_BLOCK >> _BLK_REG_SHFT] = SBUS_SXP_REGS_OFF; 241 sbc->sbus_poff[RISC_BLOCK >> _BLK_REG_SHFT] = SBUS_RISC_REGS_OFF; 242 sbc->sbus_poff[DMA_BLOCK >> _BLK_REG_SHFT] = DMA_REGS_OFF; 243 244 /* Establish interrupt channel */ 245 bus_intr_establish(sbc->sbus_bustag, sbc->sbus_pri, IPL_BIO, 246 isp_sbus_intr, sbc); 247 sbus_establish(&sbc->sbus_sd, &sbc->sbus_isp.isp_osinfo._dev); 248 249 /* 250 * Set up logging levels. 251 */ 252 #ifdef ISP_LOGDEFAULT 253 isp->isp_dblev = ISP_LOGDEFAULT; 254 #else 255 isp->isp_dblev = ISP_LOGWARN|ISP_LOGERR; 256 if (bootverbose) 257 isp->isp_dblev |= ISP_LOGCONFIG|ISP_LOGINFO; 258 #ifdef SCSIDEBUG 259 isp->isp_dblev |= ISP_LOGDEBUG1|ISP_LOGDEBUG2; 260 #endif 261 #ifdef DEBUG 262 isp->isp_dblev |= ISP_LOGDEBUG0; 263 #endif 264 #endif 265 266 isp->isp_confopts = device_cfdata(self)->cf_flags; 267 isp->isp_role = ISP_DEFAULT_ROLES; 268 269 /* 270 * There's no tool on sparc to set NVRAM for ISPs, so ignore it. 271 */ 272 isp->isp_confopts |= ISP_CFG_NONVRAM; 273 ISP_LOCK(isp); 274 isp->isp_osinfo.no_mbox_ints = 1; 275 isp_reset(isp); 276 if (isp->isp_state != ISP_RESETSTATE) { 277 ISP_UNLOCK(isp); 278 return; 279 } 280 ENABLE_INTS(isp); 281 isp_init(isp); 282 if (isp->isp_state != ISP_INITSTATE) { 283 isp_uninit(isp); 284 ISP_UNLOCK(isp); 285 return; 286 } 287 288 /* 289 * do generic attach. 290 */ 291 ISP_UNLOCK(isp); 292 isp_attach(isp); 293 if (isp->isp_state != ISP_RUNSTATE) { 294 ISP_LOCK(isp); 295 isp_uninit(isp); 296 ISP_UNLOCK(isp); 297 } 298 } 299 300 301 static void 302 isp_sbus_reset1(struct ispsoftc *isp) 303 { 304 if (isp->isp_osinfo.no_mbox_ints == 0) { 305 ENABLE_INTS(isp); 306 } 307 308 } 309 310 static int 311 isp_sbus_intr(void *arg) 312 { 313 u_int16_t isr, sema, mbox; 314 struct ispsoftc *isp = arg; 315 316 if (ISP_READ_ISR(isp, &isr, &sema, &mbox) == 0) { 317 isp->isp_intbogus++; 318 return (0); 319 } else { 320 struct isp_sbussoftc *sbc = arg; 321 sbc->sbus_isp.isp_osinfo.onintstack = 1; 322 isp_intr(isp, isr, sema, mbox); 323 sbc->sbus_isp.isp_osinfo.onintstack = 0; 324 return (1); 325 } 326 } 327 328 #define IspVirt2Off(a, x) \ 329 (((struct isp_sbussoftc *)a)->sbus_poff[((x) & _BLK_REG_MASK) >> \ 330 _BLK_REG_SHFT] + ((x) & 0xff)) 331 332 #define BXR2(sbc, off) \ 333 bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, off) 334 335 static int 336 isp_sbus_rd_isr(struct ispsoftc *isp, u_int16_t *isrp, 337 u_int16_t *semap, u_int16_t *mbp) 338 { 339 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 340 u_int16_t isr, sema; 341 342 isr = BXR2(sbc, IspVirt2Off(isp, BIU_ISR)); 343 sema = BXR2(sbc, IspVirt2Off(isp, BIU_SEMA)); 344 isp_prt(isp, ISP_LOGDEBUG3, "ISR 0x%x SEMA 0x%x", isr, sema); 345 isr &= INT_PENDING_MASK(isp); 346 sema &= BIU_SEMA_LOCK; 347 if (isr == 0 && sema == 0) { 348 return (0); 349 } 350 *isrp = isr; 351 if ((*semap = sema) != 0) { 352 *mbp = BXR2(sbc, IspVirt2Off(isp, OUTMAILBOX0)); 353 } 354 return (1); 355 } 356 357 static u_int16_t 358 isp_sbus_rd_reg(struct ispsoftc *isp, int regoff) 359 { 360 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 361 int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 362 offset += (regoff & 0xff); 363 return (bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, offset)); 364 } 365 366 static void 367 isp_sbus_wr_reg(struct ispsoftc *isp, int regoff, u_int16_t val) 368 { 369 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 370 int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 371 offset += (regoff & 0xff); 372 bus_space_write_2(sbc->sbus_bustag, sbc->sbus_reg, offset, val); 373 } 374 375 static int 376 isp_sbus_mbxdma(struct ispsoftc *isp) 377 { 378 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 379 bus_dma_segment_t reqseg, rspseg; 380 int reqrs, rsprs, i, progress; 381 size_t n; 382 bus_size_t len; 383 384 if (isp->isp_rquest_dma) 385 return (0); 386 387 n = isp->isp_maxcmds * sizeof (XS_T *); 388 isp->isp_xflist = (XS_T **) malloc(n, M_DEVBUF, M_WAITOK); 389 if (isp->isp_xflist == NULL) { 390 isp_prt(isp, ISP_LOGERR, "cannot alloc xflist array"); 391 return (1); 392 } 393 MEMZERO(isp->isp_xflist, n); 394 n = sizeof (bus_dmamap_t) * isp->isp_maxcmds; 395 sbc->sbus_dmamap = (bus_dmamap_t *) malloc(n, M_DEVBUF, M_WAITOK); 396 if (sbc->sbus_dmamap == NULL) { 397 free(isp->isp_xflist, M_DEVBUF); 398 isp->isp_xflist = NULL; 399 isp_prt(isp, ISP_LOGERR, "cannot alloc dmamap array"); 400 return (1); 401 } 402 for (i = 0; i < isp->isp_maxcmds; i++) { 403 /* Allocate a DMA handle */ 404 if (bus_dmamap_create(isp->isp_dmatag, MAXPHYS, 1, MAXPHYS, 0, 405 BUS_DMA_NOWAIT, &sbc->sbus_dmamap[i]) != 0) { 406 isp_prt(isp, ISP_LOGERR, "cmd DMA maps create error"); 407 break; 408 } 409 } 410 if (i < isp->isp_maxcmds) { 411 while (--i >= 0) { 412 bus_dmamap_destroy(isp->isp_dmatag, 413 sbc->sbus_dmamap[i]); 414 } 415 free(isp->isp_xflist, M_DEVBUF); 416 free(sbc->sbus_dmamap, M_DEVBUF); 417 isp->isp_xflist = NULL; 418 sbc->sbus_dmamap = NULL; 419 return (1); 420 } 421 422 /* 423 * Allocate and map the request and response queues 424 */ 425 progress = 0; 426 len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); 427 if (bus_dmamem_alloc(isp->isp_dmatag, len, 0, 0, &reqseg, 1, &reqrs, 428 BUS_DMA_NOWAIT)) { 429 goto dmafail; 430 } 431 progress++; 432 if (bus_dmamem_map(isp->isp_dmatag, &reqseg, reqrs, len, 433 (void **)&isp->isp_rquest, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 434 goto dmafail; 435 } 436 progress++; 437 if (bus_dmamap_create(isp->isp_dmatag, len, 1, len, 0, BUS_DMA_NOWAIT, 438 &isp->isp_rqdmap) != 0) { 439 goto dmafail; 440 } 441 progress++; 442 if (bus_dmamap_load(isp->isp_dmatag, isp->isp_rqdmap, 443 isp->isp_rquest, len, NULL, BUS_DMA_NOWAIT) != 0) { 444 goto dmafail; 445 } 446 progress++; 447 isp->isp_rquest_dma = isp->isp_rqdmap->dm_segs[0].ds_addr; 448 449 len = ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp)); 450 if (bus_dmamem_alloc(isp->isp_dmatag, len, 0, 0, &rspseg, 1, &rsprs, 451 BUS_DMA_NOWAIT)) { 452 goto dmafail; 453 } 454 progress++; 455 if (bus_dmamem_map(isp->isp_dmatag, &rspseg, rsprs, len, 456 (void **)&isp->isp_result, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 457 goto dmafail; 458 } 459 progress++; 460 if (bus_dmamap_create(isp->isp_dmatag, len, 1, len, 0, BUS_DMA_NOWAIT, 461 &isp->isp_rsdmap) != 0) { 462 goto dmafail; 463 } 464 progress++; 465 if (bus_dmamap_load(isp->isp_dmatag, isp->isp_rsdmap, 466 isp->isp_result, len, NULL, BUS_DMA_NOWAIT) != 0) { 467 goto dmafail; 468 } 469 isp->isp_result_dma = isp->isp_rsdmap->dm_segs[0].ds_addr; 470 471 return (0); 472 473 dmafail: 474 isp_prt(isp, ISP_LOGERR, "Mailbox DMA Setup Failure"); 475 476 if (progress >= 8) { 477 bus_dmamap_unload(isp->isp_dmatag, isp->isp_rsdmap); 478 } 479 if (progress >= 7) { 480 bus_dmamap_destroy(isp->isp_dmatag, isp->isp_rsdmap); 481 } 482 if (progress >= 6) { 483 bus_dmamem_unmap(isp->isp_dmatag, 484 isp->isp_result, ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp))); 485 } 486 if (progress >= 5) { 487 bus_dmamem_free(isp->isp_dmatag, &rspseg, rsprs); 488 } 489 490 if (progress >= 4) { 491 bus_dmamap_unload(isp->isp_dmatag, isp->isp_rqdmap); 492 } 493 if (progress >= 3) { 494 bus_dmamap_destroy(isp->isp_dmatag, isp->isp_rqdmap); 495 } 496 if (progress >= 2) { 497 bus_dmamem_unmap(isp->isp_dmatag, 498 isp->isp_rquest, ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp))); 499 } 500 if (progress >= 1) { 501 bus_dmamem_free(isp->isp_dmatag, &reqseg, reqrs); 502 } 503 504 for (i = 0; i < isp->isp_maxcmds; i++) { 505 bus_dmamap_destroy(isp->isp_dmatag, sbc->sbus_dmamap[i]); 506 } 507 free(sbc->sbus_dmamap, M_DEVBUF); 508 free(isp->isp_xflist, M_DEVBUF); 509 isp->isp_xflist = NULL; 510 sbc->sbus_dmamap = NULL; 511 return (1); 512 } 513 514 /* 515 * Map a DMA request. 516 * We're guaranteed that rq->req_handle is a value from 1 to isp->isp_maxcmds. 517 */ 518 519 static int 520 isp_sbus_dmasetup(struct ispsoftc *isp, XS_T *xs, ispreq_t *rq, 521 u_int16_t *nxtip, u_int16_t optr) 522 { 523 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 524 bus_dmamap_t dmap; 525 ispreq_t *qep; 526 int error, cansleep = (xs->xs_control & XS_CTL_NOSLEEP) == 0; 527 int in = (xs->xs_control & XS_CTL_DATA_IN) != 0; 528 529 qep = (ispreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, isp->isp_reqidx); 530 if (xs->datalen == 0) { 531 rq->req_seg_count = 1; 532 goto mbxsync; 533 } 534 535 dmap = sbc->sbus_dmamap[isp_handle_index(rq->req_handle)]; 536 if (dmap->dm_nsegs != 0) { 537 panic("%s: DMA map already allocated", isp->isp_name); 538 /* NOTREACHED */ 539 } 540 error = bus_dmamap_load(isp->isp_dmatag, dmap, xs->data, xs->datalen, 541 NULL, (cansleep ? BUS_DMA_WAITOK : BUS_DMA_NOWAIT) | 542 BUS_DMA_STREAMING); 543 if (error != 0) { 544 XS_SETERR(xs, HBA_BOTCH); 545 if (error == EAGAIN || error == ENOMEM) 546 return (CMD_EAGAIN); 547 else 548 return (CMD_COMPLETE); 549 } 550 551 bus_dmamap_sync(isp->isp_dmatag, dmap, 0, xs->datalen, 552 in? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 553 554 if (in) { 555 rq->req_flags |= REQFLAG_DATA_IN; 556 } else { 557 rq->req_flags |= REQFLAG_DATA_OUT; 558 } 559 560 if (XS_CDBLEN(xs) > 12) { 561 u_int16_t onxti; 562 ispcontreq_t local, *crq = &local, *cqe; 563 564 onxti = *nxtip; 565 cqe = (ispcontreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, onxti); 566 *nxtip = ISP_NXT_QENTRY(onxti, RQUEST_QUEUE_LEN(isp)); 567 if (*nxtip == optr) { 568 isp_prt(isp, ISP_LOGDEBUG0, "Request Queue Overflow++"); 569 bus_dmamap_unload(isp->isp_dmatag, dmap); 570 XS_SETERR(xs, HBA_BOTCH); 571 return (CMD_EAGAIN); 572 } 573 rq->req_seg_count = 2; 574 MEMZERO((void *)crq, sizeof (*crq)); 575 crq->req_header.rqs_entry_count = 1; 576 crq->req_header.rqs_entry_type = RQSTYPE_DATASEG; 577 crq->req_dataseg[0].ds_count = xs->datalen; 578 crq->req_dataseg[0].ds_base = dmap->dm_segs[0].ds_addr; 579 isp_put_cont_req(isp, crq, cqe); 580 MEMORYBARRIER(isp, SYNC_REQUEST, onxti, QENTRY_LEN); 581 } else { 582 rq->req_seg_count = 1; 583 rq->req_dataseg[0].ds_count = xs->datalen; 584 rq->req_dataseg[0].ds_base = dmap->dm_segs[0].ds_addr; 585 } 586 587 mbxsync: 588 if (XS_CDBLEN(xs) > 12) { 589 isp_put_extended_request(isp, 590 (ispextreq_t *)rq, (ispextreq_t *) qep); 591 } else { 592 isp_put_request(isp, rq, qep); 593 } 594 return (CMD_QUEUED); 595 } 596 597 static void 598 isp_sbus_dmateardown(struct ispsoftc *isp, XS_T *xs, u_int16_t handle) 599 { 600 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 601 bus_dmamap_t dmap; 602 603 dmap = sbc->sbus_dmamap[isp_handle_index(handle)]; 604 605 if (dmap->dm_nsegs == 0) { 606 panic("%s: DMA map not already allocated", isp->isp_name); 607 /* NOTREACHED */ 608 } 609 bus_dmamap_sync(isp->isp_dmatag, dmap, 0, 610 xs->datalen, (xs->xs_control & XS_CTL_DATA_IN)? 611 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 612 bus_dmamap_unload(isp->isp_dmatag, dmap); 613 } 614
Indexes created Tue Oct 21 08:09:48 GMT 2025