1 /*- 2 * PCI specific probe and attach routines for Qlogic ISP SCSI adapters. 3 * FreeBSD Version. 4 * 5 * Copyright (c) 1997-2006 by Matthew Jacob 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice immediately at the beginning of the file, without modification, 13 * this list of conditions, and the following disclaimer. 14 * 2. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/bus.h> 36 #include <sys/kernel.h> 37 #include <sys/module.h> 38 #include <sys/resource.h> 39 40 #include <dev/ofw/ofw_bus.h> 41 42 #include <machine/bus.h> 43 #include <machine/resource.h> 44 #include <sys/rman.h> 45 #include <sparc64/sbus/sbusvar.h> 46 47 #include <dev/isp/isp_freebsd.h> 48 49 static u_int16_t isp_sbus_rd_reg(struct ispsoftc *, int); 50 static void isp_sbus_wr_reg(struct ispsoftc *, int, u_int16_t); 51 static int 52 isp_sbus_rd_isr(struct ispsoftc *, u_int16_t *, u_int16_t *, u_int16_t *); 53 static int isp_sbus_mbxdma(struct ispsoftc *); 54 static int 55 isp_sbus_dmasetup(struct ispsoftc *, XS_T *, ispreq_t *, u_int16_t *, u_int16_t); 56 static void 57 isp_sbus_dmateardown(struct ispsoftc *, XS_T *, u_int16_t); 58 59 static void isp_sbus_reset1(struct ispsoftc *); 60 static void isp_sbus_dumpregs(struct ispsoftc *, const char *); 61 62 static struct ispmdvec mdvec = { 63 isp_sbus_rd_isr, 64 isp_sbus_rd_reg, 65 isp_sbus_wr_reg, 66 isp_sbus_mbxdma, 67 isp_sbus_dmasetup, 68 isp_sbus_dmateardown, 69 NULL, 70 isp_sbus_reset1, 71 isp_sbus_dumpregs, 72 NULL, 73 BIU_BURST_ENABLE|BIU_PCI_CONF1_FIFO_64 74 }; 75 76 static int isp_sbus_probe (device_t); 77 static int isp_sbus_attach (device_t); 78 79 80 struct isp_sbussoftc { 81 struct ispsoftc sbus_isp; 82 device_t sbus_dev; 83 struct resource * sbus_reg; 84 bus_space_tag_t sbus_st; 85 bus_space_handle_t sbus_sh; 86 void * ih; 87 int16_t sbus_poff[_NREG_BLKS]; 88 bus_dma_tag_t dmat; 89 bus_dmamap_t *dmaps; 90 sdparam sbus_param; 91 struct ispmdvec sbus_mdvec; 92 struct resource * sbus_ires; 93 }; 94 95 extern ispfwfunc *isp_get_firmware_p; 96 97 static device_method_t isp_sbus_methods[] = { 98 /* Device interface */ 99 DEVMETHOD(device_probe, isp_sbus_probe), 100 DEVMETHOD(device_attach, isp_sbus_attach), 101 { 0, 0 } 102 }; 103 static void isp_sbus_intr(void *); 104 105 static driver_t isp_sbus_driver = { 106 "isp", isp_sbus_methods, sizeof (struct isp_sbussoftc) 107 }; 108 static devclass_t isp_devclass; 109 DRIVER_MODULE(isp, sbus, isp_sbus_driver, isp_devclass, 0, 0); 110 111 static int 112 isp_sbus_probe(device_t dev) 113 { 114 int found = 0; 115 const char *name = ofw_bus_get_name(dev); 116 if (strcmp(name, "SUNW,isp") == 0 || 117 strcmp(name, "QLGC,isp") == 0 || 118 strcmp(name, "ptisp") == 0 || 119 strcmp(name, "PTI,ptisp") == 0) { 120 found++; 121 } 122 if (!found) 123 return (ENXIO); 124 125 if (isp_announced == 0 && bootverbose) { 126 printf("Qlogic ISP Driver, FreeBSD Version %d.%d, " 127 "Core Version %d.%d\n", 128 ISP_PLATFORM_VERSION_MAJOR, ISP_PLATFORM_VERSION_MINOR, 129 ISP_CORE_VERSION_MAJOR, ISP_CORE_VERSION_MINOR); 130 isp_announced++; 131 } 132 return (0); 133 } 134 135 static int 136 isp_sbus_attach(device_t dev) 137 { 138 struct resource *regs; 139 int tval, iqd, isp_debug, role, rid, ispburst, freq; 140 struct isp_sbussoftc *sbs; 141 struct ispsoftc *isp = NULL; 142 int locksetup = 0; 143 144 /* 145 * Figure out if we're supposed to skip this one. 146 * If we are, we actually go to ISP_ROLE_NONE. 147 */ 148 149 tval = 0; 150 if (resource_int_value(device_get_name(dev), device_get_unit(dev), 151 "disable", &tval) == 0 && tval) { 152 device_printf(dev, "device is disabled\n"); 153 /* but return 0 so the !$)$)*!$*) unit isn't reused */ 154 return (0); 155 } 156 157 role = 0; 158 if (resource_int_value(device_get_name(dev), device_get_unit(dev), 159 "role", &role) == 0 && 160 ((role & ~(ISP_ROLE_INITIATOR|ISP_ROLE_TARGET)) == 0)) { 161 device_printf(dev, "setting role to 0x%x\n", role); 162 } else { 163 #ifdef ISP_TARGET_MODE 164 role = ISP_ROLE_INITIATOR|ISP_ROLE_TARGET; 165 #else 166 role = ISP_DEFAULT_ROLES; 167 #endif 168 } 169 170 sbs = malloc(sizeof (*sbs), M_DEVBUF, M_NOWAIT | M_ZERO); 171 if (sbs == NULL) { 172 device_printf(dev, "cannot allocate softc\n"); 173 return (ENOMEM); 174 } 175 176 regs = NULL; 177 iqd = 0; 178 179 rid = 0; 180 regs = 181 bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); 182 if (regs == 0) { 183 device_printf(dev, "unable to map registers\n"); 184 goto bad; 185 } 186 sbs->sbus_dev = dev; 187 sbs->sbus_reg = regs; 188 sbs->sbus_st = rman_get_bustag(regs); 189 sbs->sbus_sh = rman_get_bushandle(regs); 190 sbs->sbus_mdvec = mdvec; 191 192 sbs->sbus_poff[BIU_BLOCK >> _BLK_REG_SHFT] = BIU_REGS_OFF; 193 sbs->sbus_poff[MBOX_BLOCK >> _BLK_REG_SHFT] = SBUS_MBOX_REGS_OFF; 194 sbs->sbus_poff[SXP_BLOCK >> _BLK_REG_SHFT] = SBUS_SXP_REGS_OFF; 195 sbs->sbus_poff[RISC_BLOCK >> _BLK_REG_SHFT] = SBUS_RISC_REGS_OFF; 196 sbs->sbus_poff[DMA_BLOCK >> _BLK_REG_SHFT] = DMA_REGS_OFF; 197 isp = &sbs->sbus_isp; 198 isp->isp_mdvec = &sbs->sbus_mdvec; 199 isp->isp_bustype = ISP_BT_SBUS; 200 isp->isp_type = ISP_HA_SCSI_UNKNOWN; 201 isp->isp_param = &sbs->sbus_param; 202 isp->isp_revision = 0; /* XXX */ 203 isp->isp_role = role; 204 isp->isp_dev = dev; 205 206 freq = sbus_get_clockfreq(dev); 207 if (freq) { 208 /* 209 * Convert from HZ to MHz, rounding up. 210 */ 211 freq = (freq + 500000)/1000000; 212 } else { 213 freq = 25; 214 } 215 sbs->sbus_mdvec.dv_clock = freq << 8; 216 217 /* 218 * Now figure out what the proper burst sizes, etc., to use. 219 * Unfortunately, there is no ddi_dma_burstsizes here which 220 * walks up the tree finding the limiting burst size node (if 221 * any). We just use what's here for isp. 222 */ 223 ispburst = sbus_get_burstsz(dev); 224 if (ispburst == 0) { 225 ispburst = SBUS_BURST_32 - 1; 226 } 227 sbs->sbus_mdvec.dv_conf1 = 0; 228 if (ispburst & (1 << 5)) { 229 sbs->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_32; 230 } else if (ispburst & (1 << 4)) { 231 sbs->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_16; 232 } else if (ispburst & (1 << 3)) { 233 sbs->sbus_mdvec.dv_conf1 = 234 BIU_SBUS_CONF1_BURST8 | BIU_SBUS_CONF1_FIFO_8; 235 } 236 if (sbs->sbus_mdvec.dv_conf1) { 237 sbs->sbus_mdvec.dv_conf1 |= BIU_BURST_ENABLE; 238 } 239 240 /* 241 * Some early versions of the PTI SBus adapter 242 * would fail in trying to download (via poking) 243 * FW. We give up on them. 244 */ 245 if (strcmp("PTI,ptisp", ofw_bus_get_name(dev)) == 0 || 246 strcmp("ptisp", ofw_bus_get_name(dev)) == 0) { 247 isp->isp_confopts |= ISP_CFG_NORELOAD; 248 } 249 250 /* 251 * We don't trust NVRAM on SBus cards 252 */ 253 isp->isp_confopts |= ISP_CFG_NONVRAM; 254 255 256 /* 257 * Try and find firmware for this device. 258 */ 259 260 if (isp_get_firmware_p) { 261 (*isp_get_firmware_p)(0, 0, 0x1000, &sbs->sbus_mdvec.dv_ispfw); 262 } 263 264 iqd = 0; 265 sbs->sbus_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ, &iqd, 266 RF_ACTIVE | RF_SHAREABLE); 267 if (sbs->sbus_ires == NULL) { 268 device_printf(dev, "could not allocate interrupt\n"); 269 goto bad; 270 } 271 272 tval = 0; 273 if (resource_int_value(device_get_name(dev), device_get_unit(dev), 274 "fwload_disable", &tval) == 0 && tval != 0) { 275 isp->isp_confopts |= ISP_CFG_NORELOAD; 276 } 277 278 isp->isp_osinfo.default_id = -1; 279 if (resource_int_value(device_get_name(dev), device_get_unit(dev), 280 "iid", &tval) == 0) { 281 isp->isp_osinfo.default_id = tval; 282 isp->isp_confopts |= ISP_CFG_OWNLOOPID; 283 } 284 if (isp->isp_osinfo.default_id == -1) { 285 /* 286 * XXX: should be a way to get properties w/o having 287 * XXX: to call OF_xxx functions 288 */ 289 isp->isp_osinfo.default_id = 7; 290 } 291 292 isp_debug = 0; 293 (void) resource_int_value(device_get_name(dev), device_get_unit(dev), 294 "debug", &isp_debug); 295 296 /* Make sure the lock is set up. */ 297 mtx_init(&isp->isp_osinfo.lock, "isp", NULL, MTX_DEF); 298 locksetup++; 299 300 if (bus_setup_intr(dev, sbs->sbus_ires, ISP_IFLAGS, 301 isp_sbus_intr, isp, &sbs->ih)) { 302 device_printf(dev, "could not setup interrupt\n"); 303 goto bad; 304 } 305 306 /* 307 * Set up logging levels. 308 */ 309 if (isp_debug) { 310 isp->isp_dblev = isp_debug; 311 } else { 312 isp->isp_dblev = ISP_LOGWARN|ISP_LOGERR; 313 } 314 if (bootverbose) 315 isp->isp_dblev |= ISP_LOGCONFIG|ISP_LOGINFO; 316 317 /* 318 * Make sure we're in reset state. 319 */ 320 ISP_LOCK(isp); 321 isp_reset(isp); 322 if (isp->isp_state != ISP_RESETSTATE) { 323 ISP_UNLOCK(isp); 324 goto bad; 325 } 326 isp_init(isp); 327 if (isp->isp_role != ISP_ROLE_NONE && isp->isp_state != ISP_INITSTATE) { 328 isp_uninit(isp); 329 ISP_UNLOCK(isp); 330 goto bad; 331 } 332 isp_attach(isp); 333 if (isp->isp_role != ISP_ROLE_NONE && isp->isp_state != ISP_RUNSTATE) { 334 isp_uninit(isp); 335 ISP_UNLOCK(isp); 336 goto bad; 337 } 338 /* 339 * XXXX: Here is where we might unload the f/w module 340 * XXXX: (or decrease the reference count to it). 341 */ 342 ISP_UNLOCK(isp); 343 return (0); 344 345 bad: 346 347 if (sbs && sbs->ih) { 348 (void) bus_teardown_intr(dev, sbs->sbus_ires, sbs->ih); 349 } 350 351 if (locksetup && isp) { 352 mtx_destroy(&isp->isp_osinfo.lock); 353 } 354 355 if (sbs && sbs->sbus_ires) { 356 bus_release_resource(dev, SYS_RES_IRQ, iqd, sbs->sbus_ires); 357 } 358 359 360 if (regs) { 361 (void) bus_release_resource(dev, 0, 0, regs); 362 } 363 364 if (sbs) { 365 if (sbs->sbus_isp.isp_param) 366 free(sbs->sbus_isp.isp_param, M_DEVBUF); 367 free(sbs, M_DEVBUF); 368 } 369 370 /* 371 * XXXX: Here is where we might unload the f/w module 372 * XXXX: (or decrease the reference count to it). 373 */ 374 return (ENXIO); 375 } 376 377 static void 378 isp_sbus_intr(void *arg) 379 { 380 struct ispsoftc *isp = arg; 381 u_int16_t isr, sema, mbox; 382 383 ISP_LOCK(isp); 384 isp->isp_intcnt++; 385 if (ISP_READ_ISR(isp, &isr, &sema, &mbox) == 0) { 386 isp->isp_intbogus++; 387 } else { 388 int iok = isp->isp_osinfo.intsok; 389 isp->isp_osinfo.intsok = 0; 390 isp_intr(isp, isr, sema, mbox); 391 isp->isp_osinfo.intsok = iok; 392 } 393 ISP_UNLOCK(isp); 394 } 395 396 #define IspVirt2Off(a, x) \ 397 (((struct isp_sbussoftc *)a)->sbus_poff[((x) & _BLK_REG_MASK) >> \ 398 _BLK_REG_SHFT] + ((x) & 0xff)) 399 400 #define BXR2(sbc, off) \ 401 bus_space_read_2(sbc->sbus_st, sbc->sbus_sh, off) 402 403 static int 404 isp_sbus_rd_isr(struct ispsoftc *isp, u_int16_t *isrp, 405 u_int16_t *semap, u_int16_t *mbp) 406 { 407 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 408 u_int16_t isr, sema; 409 410 isr = BXR2(sbc, IspVirt2Off(isp, BIU_ISR)); 411 sema = BXR2(sbc, IspVirt2Off(isp, BIU_SEMA)); 412 isp_prt(isp, ISP_LOGDEBUG3, "ISR 0x%x SEMA 0x%x", isr, sema); 413 isr &= INT_PENDING_MASK(isp); 414 sema &= BIU_SEMA_LOCK; 415 if (isr == 0 && sema == 0) { 416 return (0); 417 } 418 *isrp = isr; 419 if ((*semap = sema) != 0) { 420 *mbp = BXR2(sbc, IspVirt2Off(isp, OUTMAILBOX0)); 421 } 422 return (1); 423 } 424 425 static u_int16_t 426 isp_sbus_rd_reg(struct ispsoftc *isp, int regoff) 427 { 428 u_int16_t rval; 429 struct isp_sbussoftc *sbs = (struct isp_sbussoftc *) isp; 430 int offset = sbs->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 431 offset += (regoff & 0xff); 432 rval = bus_space_read_2(sbs->sbus_st, sbs->sbus_sh, offset); 433 isp_prt(isp, ISP_LOGDEBUG3, 434 "isp_sbus_rd_reg(off %x) = %x", regoff, rval); 435 return (rval); 436 } 437 438 static void 439 isp_sbus_wr_reg(struct ispsoftc *isp, int regoff, u_int16_t val) 440 { 441 struct isp_sbussoftc *sbs = (struct isp_sbussoftc *) isp; 442 int offset = sbs->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 443 offset += (regoff & 0xff); 444 isp_prt(isp, ISP_LOGDEBUG3, 445 "isp_sbus_wr_reg(off %x) = %x", regoff, val); 446 bus_space_write_2(sbs->sbus_st, sbs->sbus_sh, offset, val); 447 } 448 449 struct imush { 450 struct ispsoftc *isp; 451 int error; 452 }; 453 454 static void imc(void *, bus_dma_segment_t *, int, int); 455 456 static void 457 imc(void *arg, bus_dma_segment_t *segs, int nseg, int error) 458 { 459 struct imush *imushp = (struct imush *) arg; 460 if (error) { 461 imushp->error = error; 462 } else { 463 struct ispsoftc *isp =imushp->isp; 464 bus_addr_t addr = segs->ds_addr; 465 466 isp->isp_rquest_dma = addr; 467 addr += ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); 468 isp->isp_result_dma = addr; 469 } 470 } 471 472 /* 473 * Should be BUS_SPACE_MAXSIZE, but MAXPHYS is larger than BUS_SPACE_MAXSIZE 474 */ 475 #define ISP_NSEGS ((MAXPHYS / PAGE_SIZE) + 1) 476 477 static int 478 isp_sbus_mbxdma(struct ispsoftc *isp) 479 { 480 struct isp_sbussoftc *sbs = (struct isp_sbussoftc *)isp; 481 caddr_t base; 482 u_int32_t len; 483 int i, error, ns; 484 struct imush im; 485 486 /* 487 * Already been here? If so, leave... 488 */ 489 if (isp->isp_rquest) { 490 return (0); 491 } 492 493 ISP_UNLOCK(isp); 494 495 if (bus_dma_tag_create(NULL, 1, BUS_SPACE_MAXADDR_24BIT+1, 496 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR_32BIT, 497 NULL, NULL, BUS_SPACE_MAXSIZE_32BIT, ISP_NSEGS, 498 BUS_SPACE_MAXADDR_24BIT, 0, busdma_lock_mutex, &Giant, 499 &sbs->dmat)) { 500 isp_prt(isp, ISP_LOGERR, "could not create master dma tag"); 501 ISP_LOCK(isp); 502 return(1); 503 } 504 505 len = sizeof (XS_T **) * isp->isp_maxcmds; 506 isp->isp_xflist = (XS_T **) malloc(len, M_DEVBUF, M_WAITOK | M_ZERO); 507 if (isp->isp_xflist == NULL) { 508 isp_prt(isp, ISP_LOGERR, "cannot alloc xflist array"); 509 ISP_LOCK(isp); 510 return (1); 511 } 512 len = sizeof (bus_dmamap_t) * isp->isp_maxcmds; 513 sbs->dmaps = (bus_dmamap_t *) malloc(len, M_DEVBUF, M_WAITOK); 514 if (sbs->dmaps == NULL) { 515 isp_prt(isp, ISP_LOGERR, "can't alloc dma map storage"); 516 free(isp->isp_xflist, M_DEVBUF); 517 ISP_LOCK(isp); 518 return (1); 519 } 520 521 /* 522 * Allocate and map the request, result queues, plus FC scratch area. 523 */ 524 len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); 525 len += ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp)); 526 527 ns = (len / PAGE_SIZE) + 1; 528 if (bus_dma_tag_create(sbs->dmat, QENTRY_LEN, BUS_SPACE_MAXADDR_24BIT+1, 529 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR_32BIT, NULL, NULL, 530 len, ns, BUS_SPACE_MAXADDR_24BIT, 0, busdma_lock_mutex, &Giant, 531 &isp->isp_cdmat)) { 532 isp_prt(isp, ISP_LOGERR, 533 "cannot create a dma tag for control spaces"); 534 free(sbs->dmaps, M_DEVBUF); 535 free(isp->isp_xflist, M_DEVBUF); 536 ISP_LOCK(isp); 537 return (1); 538 } 539 540 if (bus_dmamem_alloc(isp->isp_cdmat, (void **)&base, BUS_DMA_NOWAIT, 541 &isp->isp_cdmap) != 0) { 542 isp_prt(isp, ISP_LOGERR, 543 "cannot allocate %d bytes of CCB memory", len); 544 bus_dma_tag_destroy(isp->isp_cdmat); 545 free(isp->isp_xflist, M_DEVBUF); 546 free(sbs->dmaps, M_DEVBUF); 547 ISP_LOCK(isp); 548 return (1); 549 } 550 551 for (i = 0; i < isp->isp_maxcmds; i++) { 552 error = bus_dmamap_create(sbs->dmat, 0, &sbs->dmaps[i]); 553 if (error) { 554 isp_prt(isp, ISP_LOGERR, 555 "error %d creating per-cmd DMA maps", error); 556 while (--i >= 0) { 557 bus_dmamap_destroy(sbs->dmat, sbs->dmaps[i]); 558 } 559 goto bad; 560 } 561 } 562 563 im.isp = isp; 564 im.error = 0; 565 bus_dmamap_load(isp->isp_cdmat, isp->isp_cdmap, base, len, imc, &im, 0); 566 if (im.error) { 567 isp_prt(isp, ISP_LOGERR, 568 "error %d loading dma map for control areas", im.error); 569 goto bad; 570 } 571 572 isp->isp_rquest = base; 573 base += ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); 574 ISP_LOCK(isp); 575 isp->isp_result = base; 576 return (0); 577 578 bad: 579 bus_dmamem_free(isp->isp_cdmat, base, isp->isp_cdmap); 580 bus_dma_tag_destroy(isp->isp_cdmat); 581 free(isp->isp_xflist, M_DEVBUF); 582 free(sbs->dmaps, M_DEVBUF); 583 ISP_LOCK(isp); 584 isp->isp_rquest = NULL; 585 return (1); 586 } 587 588 typedef struct { 589 struct ispsoftc *isp; 590 void *cmd_token; 591 void *rq; 592 u_int16_t *nxtip; 593 u_int16_t optr; 594 u_int error; 595 } mush_t; 596 597 #define MUSHERR_NOQENTRIES -2 598 599 600 static void dma2(void *, bus_dma_segment_t *, int, int); 601 602 static void 603 dma2(void *arg, bus_dma_segment_t *dm_segs, int nseg, int error) 604 { 605 mush_t *mp; 606 struct ispsoftc *isp; 607 struct ccb_scsiio *csio; 608 struct isp_sbussoftc *sbs; 609 bus_dmamap_t *dp; 610 bus_dma_segment_t *eseg; 611 ispreq_t *rq; 612 int seglim, datalen; 613 u_int16_t nxti; 614 615 mp = (mush_t *) arg; 616 if (error) { 617 mp->error = error; 618 return; 619 } 620 621 if (nseg < 1) { 622 isp_prt(mp->isp, ISP_LOGERR, "bad segment count (%d)", nseg); 623 mp->error = EFAULT; 624 return; 625 } 626 csio = mp->cmd_token; 627 isp = mp->isp; 628 rq = mp->rq; 629 sbs = (struct isp_sbussoftc *)mp->isp; 630 dp = &sbs->dmaps[isp_handle_index(rq->req_handle)]; 631 nxti = *mp->nxtip; 632 633 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 634 bus_dmamap_sync(sbs->dmat, *dp, BUS_DMASYNC_PREREAD); 635 } else { 636 bus_dmamap_sync(sbs->dmat, *dp, BUS_DMASYNC_PREWRITE); 637 } 638 639 datalen = XS_XFRLEN(csio); 640 641 /* 642 * We're passed an initial partially filled in entry that 643 * has most fields filled in except for data transfer 644 * related values. 645 * 646 * Our job is to fill in the initial request queue entry and 647 * then to start allocating and filling in continuation entries 648 * until we've covered the entire transfer. 649 */ 650 651 if (csio->cdb_len > 12) { 652 seglim = 0; 653 } else { 654 seglim = ISP_RQDSEG; 655 } 656 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 657 rq->req_flags |= REQFLAG_DATA_IN; 658 } else { 659 rq->req_flags |= REQFLAG_DATA_OUT; 660 } 661 662 eseg = dm_segs + nseg; 663 664 while (datalen != 0 && rq->req_seg_count < seglim && dm_segs != eseg) { 665 rq->req_dataseg[rq->req_seg_count].ds_base = dm_segs->ds_addr; 666 rq->req_dataseg[rq->req_seg_count].ds_count = dm_segs->ds_len; 667 datalen -= dm_segs->ds_len; 668 rq->req_seg_count++; 669 dm_segs++; 670 } 671 672 while (datalen > 0 && dm_segs != eseg) { 673 u_int16_t onxti; 674 ispcontreq_t local, *crq = &local, *cqe; 675 676 cqe = (ispcontreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, nxti); 677 onxti = nxti; 678 nxti = ISP_NXT_QENTRY(onxti, RQUEST_QUEUE_LEN(isp)); 679 if (nxti == mp->optr) { 680 isp_prt(isp, ISP_LOGDEBUG0, "Request Queue Overflow++"); 681 mp->error = MUSHERR_NOQENTRIES; 682 return; 683 } 684 rq->req_header.rqs_entry_count++; 685 MEMZERO((void *)crq, sizeof (*crq)); 686 crq->req_header.rqs_entry_count = 1; 687 crq->req_header.rqs_entry_type = RQSTYPE_DATASEG; 688 689 seglim = 0; 690 while (datalen > 0 && seglim < ISP_CDSEG && dm_segs != eseg) { 691 crq->req_dataseg[seglim].ds_base = 692 dm_segs->ds_addr; 693 crq->req_dataseg[seglim].ds_count = 694 dm_segs->ds_len; 695 rq->req_seg_count++; 696 dm_segs++; 697 seglim++; 698 datalen -= dm_segs->ds_len; 699 } 700 isp_put_cont_req(isp, crq, cqe); 701 MEMORYBARRIER(isp, SYNC_REQUEST, onxti, QENTRY_LEN); 702 } 703 *mp->nxtip = nxti; 704 } 705 706 static int 707 isp_sbus_dmasetup(struct ispsoftc *isp, struct ccb_scsiio *csio, ispreq_t *rq, 708 u_int16_t *nxtip, u_int16_t optr) 709 { 710 struct isp_sbussoftc *sbs = (struct isp_sbussoftc *)isp; 711 ispreq_t *qep; 712 bus_dmamap_t *dp = NULL; 713 mush_t mush, *mp; 714 void (*eptr)(void *, bus_dma_segment_t *, int, int); 715 716 qep = (ispreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, isp->isp_reqidx); 717 eptr = dma2; 718 719 720 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_NONE || 721 (csio->dxfer_len == 0)) { 722 rq->req_seg_count = 1; 723 goto mbxsync; 724 } 725 726 /* 727 * Do a virtual grapevine step to collect info for 728 * the callback dma allocation that we have to use... 729 */ 730 mp = &mush; 731 mp->isp = isp; 732 mp->cmd_token = csio; 733 mp->rq = rq; 734 mp->nxtip = nxtip; 735 mp->optr = optr; 736 mp->error = 0; 737 738 if ((csio->ccb_h.flags & CAM_SCATTER_VALID) == 0) { 739 if ((csio->ccb_h.flags & CAM_DATA_PHYS) == 0) { 740 int error, s; 741 dp = &sbs->dmaps[isp_handle_index(rq->req_handle)]; 742 s = splsoftvm(); 743 error = bus_dmamap_load(sbs->dmat, *dp, 744 csio->data_ptr, csio->dxfer_len, eptr, mp, 0); 745 if (error == EINPROGRESS) { 746 bus_dmamap_unload(sbs->dmat, *dp); 747 mp->error = EINVAL; 748 isp_prt(isp, ISP_LOGERR, 749 "deferred dma allocation not supported"); 750 } else if (error && mp->error == 0) { 751 #ifdef DIAGNOSTIC 752 isp_prt(isp, ISP_LOGERR, 753 "error %d in dma mapping code", error); 754 #endif 755 mp->error = error; 756 } 757 splx(s); 758 } else { 759 /* Pointer to physical buffer */ 760 struct bus_dma_segment seg; 761 seg.ds_addr = (bus_addr_t)csio->data_ptr; 762 seg.ds_len = csio->dxfer_len; 763 (*eptr)(mp, &seg, 1, 0); 764 } 765 } else { 766 struct bus_dma_segment *segs; 767 768 if ((csio->ccb_h.flags & CAM_DATA_PHYS) != 0) { 769 isp_prt(isp, ISP_LOGERR, 770 "Physical segment pointers unsupported"); 771 mp->error = EINVAL; 772 } else if ((csio->ccb_h.flags & CAM_SG_LIST_PHYS) == 0) { 773 isp_prt(isp, ISP_LOGERR, 774 "Virtual segment addresses unsupported"); 775 mp->error = EINVAL; 776 } else { 777 /* Just use the segments provided */ 778 segs = (struct bus_dma_segment *) csio->data_ptr; 779 (*eptr)(mp, segs, csio->sglist_cnt, 0); 780 } 781 } 782 if (mp->error) { 783 int retval = CMD_COMPLETE; 784 if (mp->error == MUSHERR_NOQENTRIES) { 785 retval = CMD_EAGAIN; 786 } else if (mp->error == EFBIG) { 787 XS_SETERR(csio, CAM_REQ_TOO_BIG); 788 } else if (mp->error == EINVAL) { 789 XS_SETERR(csio, CAM_REQ_INVALID); 790 } else { 791 XS_SETERR(csio, CAM_UNREC_HBA_ERROR); 792 } 793 return (retval); 794 } 795 mbxsync: 796 switch (rq->req_header.rqs_entry_type) { 797 case RQSTYPE_REQUEST: 798 isp_put_request(isp, rq, qep); 799 break; 800 case RQSTYPE_CMDONLY: 801 isp_put_extended_request(isp, (ispextreq_t *)rq, 802 (ispextreq_t *)qep); 803 break; 804 } 805 return (CMD_QUEUED); 806 } 807 808 static void 809 isp_sbus_dmateardown(struct ispsoftc *isp, XS_T *xs, u_int16_t handle) 810 { 811 struct isp_sbussoftc *sbs = (struct isp_sbussoftc *)isp; 812 bus_dmamap_t *dp = &sbs->dmaps[isp_handle_index(handle)]; 813 if ((xs->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 814 bus_dmamap_sync(sbs->dmat, *dp, BUS_DMASYNC_POSTREAD); 815 } else { 816 bus_dmamap_sync(sbs->dmat, *dp, BUS_DMASYNC_POSTWRITE); 817 } 818 bus_dmamap_unload(sbs->dmat, *dp); 819 } 820 821 822 static void 823 isp_sbus_reset1(struct ispsoftc *isp) 824 { 825 /* enable interrupts */ 826 ENABLE_INTS(isp); 827 } 828 829 static void 830 isp_sbus_dumpregs(struct ispsoftc *isp, const char *msg) 831 { 832 if (msg) 833 printf("%s: %s\n", device_get_nameunit(isp->isp_dev), msg); 834 else 835 printf("%s:\n", device_get_nameunit(isp->isp_dev)); 836 printf(" biu_conf1=%x", ISP_READ(isp, BIU_CONF1)); 837 printf(" biu_icr=%x biu_isr=%x biu_sema=%x ", ISP_READ(isp, BIU_ICR), 838 ISP_READ(isp, BIU_ISR), ISP_READ(isp, BIU_SEMA)); 839 printf("risc_hccr=%x\n", ISP_READ(isp, HCCR)); 840 841 842 ISP_WRITE(isp, HCCR, HCCR_CMD_PAUSE); 843 printf(" cdma_conf=%x cdma_sts=%x cdma_fifostat=%x\n", 844 ISP_READ(isp, CDMA_CONF), ISP_READ(isp, CDMA_STATUS), 845 ISP_READ(isp, CDMA_FIFO_STS)); 846 printf(" ddma_conf=%x ddma_sts=%x ddma_fifostat=%x\n", 847 ISP_READ(isp, DDMA_CONF), ISP_READ(isp, DDMA_STATUS), 848 ISP_READ(isp, DDMA_FIFO_STS)); 849 printf(" sxp_int=%x sxp_gross=%x sxp(scsi_ctrl)=%x\n", 850 ISP_READ(isp, SXP_INTERRUPT), 851 ISP_READ(isp, SXP_GROSS_ERR), 852 ISP_READ(isp, SXP_PINS_CTRL)); 853 ISP_WRITE(isp, HCCR, HCCR_CMD_RELEASE); 854 printf(" mbox regs: %x %x %x %x %x\n", 855 ISP_READ(isp, OUTMAILBOX0), ISP_READ(isp, OUTMAILBOX1), 856 ISP_READ(isp, OUTMAILBOX2), ISP_READ(isp, OUTMAILBOX3), 857 ISP_READ(isp, OUTMAILBOX4)); 858 } 859