isp_sbus.c revision 160212
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: head/sys/dev/isp/isp_sbus.c 160212 2006-07-09 17:50:20Z mjacob $"); 32 33#include <sys/param.h> 34#include <sys/systm.h> 35#if __FreeBSD_version >= 700000 36#include <sys/linker.h> 37#include <sys/firmware.h> 38#endif 39#include <sys/bus.h> 40#include <sys/kernel.h> 41#include <sys/module.h> 42#include <sys/resource.h> 43 44#include <dev/ofw/ofw_bus.h> 45 46#include <machine/bus.h> 47#include <machine/resource.h> 48#include <sys/rman.h> 49#include <sparc64/sbus/sbusvar.h> 50 51#include <dev/isp/isp_freebsd.h> 52 53static uint16_t isp_sbus_rd_reg(ispsoftc_t *, int); 54static void isp_sbus_wr_reg(ispsoftc_t *, int, uint16_t); 55static int 56isp_sbus_rd_isr(ispsoftc_t *, uint16_t *, uint16_t *, uint16_t *); 57static int isp_sbus_mbxdma(ispsoftc_t *); 58static int 59isp_sbus_dmasetup(ispsoftc_t *, XS_T *, ispreq_t *, uint16_t *, uint16_t); 60static void 61isp_sbus_dmateardown(ispsoftc_t *, XS_T *, uint16_t); 62 63static void isp_sbus_reset1(ispsoftc_t *); 64static void isp_sbus_dumpregs(ispsoftc_t *, const char *); 65 66static struct ispmdvec mdvec = { 67 isp_sbus_rd_isr, 68 isp_sbus_rd_reg, 69 isp_sbus_wr_reg, 70 isp_sbus_mbxdma, 71 isp_sbus_dmasetup, 72 isp_sbus_dmateardown, 73 NULL, 74 isp_sbus_reset1, 75 isp_sbus_dumpregs, 76 NULL, 77 BIU_BURST_ENABLE|BIU_PCI_CONF1_FIFO_64 78}; 79 80static int isp_sbus_probe (device_t); 81static int isp_sbus_attach (device_t); 82 83 84struct isp_sbussoftc { 85 ispsoftc_t sbus_isp; 86 device_t sbus_dev; 87 struct resource * sbus_reg; 88 bus_space_tag_t sbus_st; 89 bus_space_handle_t sbus_sh; 90 void * ih; 91 int16_t sbus_poff[_NREG_BLKS]; 92 bus_dma_tag_t dmat; 93 bus_dmamap_t *dmaps; 94 sdparam sbus_param; 95 struct ispmdvec sbus_mdvec; 96 struct resource * sbus_ires; 97}; 98 99 100static device_method_t isp_sbus_methods[] = { 101 /* Device interface */ 102 DEVMETHOD(device_probe, isp_sbus_probe), 103 DEVMETHOD(device_attach, isp_sbus_attach), 104 { 0, 0 } 105}; 106static void isp_sbus_intr(void *); 107 108static driver_t isp_sbus_driver = { 109 "isp", isp_sbus_methods, sizeof (struct isp_sbussoftc) 110}; 111static devclass_t isp_devclass; 112DRIVER_MODULE(isp, sbus, isp_sbus_driver, isp_devclass, 0, 0); 113#if __FreeBSD_version >= 700000 114MODULE_DEPEND(isp, firmware, 1, 1, 1); 115#else 116typedef void ispfwfunc(int, int, int, uint16_t **); 117extern ispfwfunc *isp_get_firmware_p; 118#endif 119 120static int 121isp_sbus_probe(device_t dev) 122{ 123 int found = 0; 124 const char *name = ofw_bus_get_name(dev); 125 if (strcmp(name, "SUNW,isp") == 0 || 126 strcmp(name, "QLGC,isp") == 0 || 127 strcmp(name, "ptisp") == 0 || 128 strcmp(name, "PTI,ptisp") == 0) { 129 found++; 130 } 131 if (!found) 132 return (ENXIO); 133 134 if (isp_announced == 0 && bootverbose) { 135 printf("Qlogic ISP Driver, FreeBSD Version %d.%d, " 136 "Core Version %d.%d\n", 137 ISP_PLATFORM_VERSION_MAJOR, ISP_PLATFORM_VERSION_MINOR, 138 ISP_CORE_VERSION_MAJOR, ISP_CORE_VERSION_MINOR); 139 isp_announced++; 140 } 141 return (0); 142} 143 144static int 145isp_sbus_attach(device_t dev) 146{ 147 struct resource *regs; 148 int tval, iqd, isp_debug, role, rid, ispburst; 149 struct isp_sbussoftc *sbs; 150 ispsoftc_t *isp = NULL; 151 int locksetup = 0; 152 153 /* 154 * Figure out if we're supposed to skip this one. 155 * If we are, we actually go to ISP_ROLE_NONE. 156 */ 157 158 tval = 0; 159 if (resource_int_value(device_get_name(dev), device_get_unit(dev), 160 "disable", &tval) == 0 && tval) { 161 device_printf(dev, "device is disabled\n"); 162 /* but return 0 so the !$)$)*!$*) unit isn't reused */ 163 return (0); 164 } 165 166 role = 0; 167 if (resource_int_value(device_get_name(dev), device_get_unit(dev), 168 "role", &role) == 0 && 169 ((role & ~(ISP_ROLE_INITIATOR|ISP_ROLE_TARGET)) == 0)) { 170 device_printf(dev, "setting role to 0x%x\n", role); 171 } else { 172#ifdef ISP_TARGET_MODE 173 role = ISP_ROLE_INITIATOR|ISP_ROLE_TARGET; 174#else 175 role = ISP_DEFAULT_ROLES; 176#endif 177 } 178 179 sbs = malloc(sizeof (*sbs), M_DEVBUF, M_NOWAIT | M_ZERO); 180 if (sbs == NULL) { 181 device_printf(dev, "cannot allocate softc\n"); 182 return (ENOMEM); 183 } 184 185 regs = NULL; 186 iqd = 0; 187 188 rid = 0; 189 regs = 190 bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); 191 if (regs == 0) { 192 device_printf(dev, "unable to map registers\n"); 193 goto bad; 194 } 195 sbs->sbus_dev = dev; 196 sbs->sbus_reg = regs; 197 sbs->sbus_st = rman_get_bustag(regs); 198 sbs->sbus_sh = rman_get_bushandle(regs); 199 sbs->sbus_mdvec = mdvec; 200 201 sbs->sbus_poff[BIU_BLOCK >> _BLK_REG_SHFT] = BIU_REGS_OFF; 202 sbs->sbus_poff[MBOX_BLOCK >> _BLK_REG_SHFT] = SBUS_MBOX_REGS_OFF; 203 sbs->sbus_poff[SXP_BLOCK >> _BLK_REG_SHFT] = SBUS_SXP_REGS_OFF; 204 sbs->sbus_poff[RISC_BLOCK >> _BLK_REG_SHFT] = SBUS_RISC_REGS_OFF; 205 sbs->sbus_poff[DMA_BLOCK >> _BLK_REG_SHFT] = DMA_REGS_OFF; 206 isp = &sbs->sbus_isp; 207 isp->isp_mdvec = &sbs->sbus_mdvec; 208 isp->isp_bustype = ISP_BT_SBUS; 209 isp->isp_type = ISP_HA_SCSI_UNKNOWN; 210 isp->isp_param = &sbs->sbus_param; 211 isp->isp_revision = 0; /* XXX */ 212 isp->isp_role = role; 213 isp->isp_dev = dev; 214 215 /* 216 * Get the clock frequency and convert it from HZ to MHz, 217 * rounding up. This defaults to 25MHz if there isn't a 218 * device specific one in the OFW device tree. 219 */ 220 sbs->sbus_mdvec.dv_clock = (sbus_get_clockfreq(dev) + 500000)/1000000; 221 222 /* 223 * Now figure out what the proper burst sizes, etc., to use. 224 * Unfortunately, there is no ddi_dma_burstsizes here which 225 * walks up the tree finding the limiting burst size node (if 226 * any). We just use what's here for isp. 227 */ 228 ispburst = sbus_get_burstsz(dev); 229 if (ispburst == 0) { 230 ispburst = SBUS_BURST_32 - 1; 231 } 232 sbs->sbus_mdvec.dv_conf1 = 0; 233 if (ispburst & (1 << 5)) { 234 sbs->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_32; 235 } else if (ispburst & (1 << 4)) { 236 sbs->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_16; 237 } else if (ispburst & (1 << 3)) { 238 sbs->sbus_mdvec.dv_conf1 = 239 BIU_SBUS_CONF1_BURST8 | BIU_SBUS_CONF1_FIFO_8; 240 } 241 if (sbs->sbus_mdvec.dv_conf1) { 242 sbs->sbus_mdvec.dv_conf1 |= BIU_BURST_ENABLE; 243 } 244 245 /* 246 * Some early versions of the PTI SBus adapter 247 * would fail in trying to download (via poking) 248 * FW. We give up on them. 249 */ 250 if (strcmp("PTI,ptisp", ofw_bus_get_name(dev)) == 0 || 251 strcmp("ptisp", ofw_bus_get_name(dev)) == 0) { 252 isp->isp_confopts |= ISP_CFG_NORELOAD; 253 } 254 255 /* 256 * We don't trust NVRAM on SBus cards 257 */ 258 isp->isp_confopts |= ISP_CFG_NONVRAM; 259 260 261#if __FreeBSD_version >= 700000 262 isp->isp_osinfo.fw = firmware_get("isp_1000"); 263 if (isp->isp_osinfo.fw) { 264 union { 265 const void *cp; 266 uint16_t *sp; 267 } stupid; 268 stupid.cp = isp->isp_osinfo.fw->data; 269 isp->isp_mdvec->dv_ispfw = stupid.sp; 270 } 271#else 272 /* 273 * Try and find firmware for this device. 274 */ 275 if (isp_get_firmware_p) { 276 (*isp_get_firmware_p)(0, 0, 0x1000, &sbs->sbus_mdvec.dv_ispfw); 277 } 278#endif 279 280 iqd = 0; 281 sbs->sbus_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ, &iqd, 282 RF_ACTIVE | RF_SHAREABLE); 283 if (sbs->sbus_ires == NULL) { 284 device_printf(dev, "could not allocate interrupt\n"); 285 goto bad; 286 } 287 288 tval = 0; 289 if (resource_int_value(device_get_name(dev), device_get_unit(dev), 290 "fwload_disable", &tval) == 0 && tval != 0) { 291 isp->isp_confopts |= ISP_CFG_NORELOAD; 292 } 293 294 isp->isp_osinfo.default_id = -1; 295 if (resource_int_value(device_get_name(dev), device_get_unit(dev), 296 "iid", &tval) == 0) { 297 isp->isp_osinfo.default_id = tval; 298 isp->isp_confopts |= ISP_CFG_OWNLOOPID; 299 } 300 if (isp->isp_osinfo.default_id == -1) { 301 /* 302 * XXX: should be a way to get properties w/o having 303 * XXX: to call OF_xxx functions 304 */ 305 isp->isp_osinfo.default_id = 7; 306 } 307 308 isp_debug = 0; 309 (void) resource_int_value(device_get_name(dev), device_get_unit(dev), 310 "debug", &isp_debug); 311 312 /* Make sure the lock is set up. */ 313 mtx_init(&isp->isp_osinfo.lock, "isp", NULL, MTX_DEF); 314 locksetup++; 315 316 if (bus_setup_intr(dev, sbs->sbus_ires, ISP_IFLAGS, 317 isp_sbus_intr, isp, &sbs->ih)) { 318 device_printf(dev, "could not setup interrupt\n"); 319 goto bad; 320 } 321 322 /* 323 * Set up logging levels. 324 */ 325 if (isp_debug) { 326 isp->isp_dblev = isp_debug; 327 } else { 328 isp->isp_dblev = ISP_LOGWARN|ISP_LOGERR; 329 } 330 if (bootverbose) 331 isp->isp_dblev |= ISP_LOGCONFIG|ISP_LOGINFO; 332 333 /* 334 * Make sure we're in reset state. 335 */ 336 ISP_LOCK(isp); 337 isp_reset(isp); 338 if (isp->isp_state != ISP_RESETSTATE) { 339 ISP_UNLOCK(isp); 340 goto bad; 341 } 342 isp_init(isp); 343 if (isp->isp_role != ISP_ROLE_NONE && isp->isp_state != ISP_INITSTATE) { 344 isp_uninit(isp); 345 ISP_UNLOCK(isp); 346 goto bad; 347 } 348 isp_attach(isp); 349 if (isp->isp_role != ISP_ROLE_NONE && isp->isp_state != ISP_RUNSTATE) { 350 isp_uninit(isp); 351 ISP_UNLOCK(isp); 352 goto bad; 353 } 354 /* 355 * XXXX: Here is where we might unload the f/w module 356 * XXXX: (or decrease the reference count to it). 357 */ 358 ISP_UNLOCK(isp); 359 return (0); 360 361bad: 362 363 if (sbs && sbs->ih) { 364 (void) bus_teardown_intr(dev, sbs->sbus_ires, sbs->ih); 365 } 366 367 if (locksetup && isp) { 368 mtx_destroy(&isp->isp_osinfo.lock); 369 } 370 371 if (sbs && sbs->sbus_ires) { 372 bus_release_resource(dev, SYS_RES_IRQ, iqd, sbs->sbus_ires); 373 } 374 375 376 if (regs) { 377 (void) bus_release_resource(dev, 0, 0, regs); 378 } 379 380 if (sbs) { 381 if (sbs->sbus_isp.isp_param) 382 free(sbs->sbus_isp.isp_param, M_DEVBUF); 383 free(sbs, M_DEVBUF); 384 } 385 386 /* 387 * XXXX: Here is where we might unload the f/w module 388 * XXXX: (or decrease the reference count to it). 389 */ 390 return (ENXIO); 391} 392 393static void 394isp_sbus_intr(void *arg) 395{ 396 ispsoftc_t *isp = arg; 397 uint16_t isr, sema, mbox; 398 399 ISP_LOCK(isp); 400 isp->isp_intcnt++; 401 if (ISP_READ_ISR(isp, &isr, &sema, &mbox) == 0) { 402 isp->isp_intbogus++; 403 } else { 404 int iok = isp->isp_osinfo.intsok; 405 isp->isp_osinfo.intsok = 0; 406 isp_intr(isp, isr, sema, mbox); 407 isp->isp_osinfo.intsok = iok; 408 } 409 ISP_UNLOCK(isp); 410} 411 412#define IspVirt2Off(a, x) \ 413 (((struct isp_sbussoftc *)a)->sbus_poff[((x) & _BLK_REG_MASK) >> \ 414 _BLK_REG_SHFT] + ((x) & 0xff)) 415 416#define BXR2(sbc, off) \ 417 bus_space_read_2(sbc->sbus_st, sbc->sbus_sh, off) 418 419static int 420isp_sbus_rd_isr(ispsoftc_t *isp, uint16_t *isrp, 421 uint16_t *semap, uint16_t *mbp) 422{ 423 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 424 uint16_t isr, sema; 425 426 isr = BXR2(sbc, IspVirt2Off(isp, BIU_ISR)); 427 sema = BXR2(sbc, IspVirt2Off(isp, BIU_SEMA)); 428 isp_prt(isp, ISP_LOGDEBUG3, "ISR 0x%x SEMA 0x%x", isr, sema); 429 isr &= INT_PENDING_MASK(isp); 430 sema &= BIU_SEMA_LOCK; 431 if (isr == 0 && sema == 0) { 432 return (0); 433 } 434 *isrp = isr; 435 if ((*semap = sema) != 0) { 436 *mbp = BXR2(sbc, IspVirt2Off(isp, OUTMAILBOX0)); 437 } 438 return (1); 439} 440 441static uint16_t 442isp_sbus_rd_reg(ispsoftc_t *isp, int regoff) 443{ 444 uint16_t rval; 445 struct isp_sbussoftc *sbs = (struct isp_sbussoftc *) isp; 446 int offset = sbs->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 447 offset += (regoff & 0xff); 448 rval = bus_space_read_2(sbs->sbus_st, sbs->sbus_sh, offset); 449 isp_prt(isp, ISP_LOGDEBUG3, 450 "isp_sbus_rd_reg(off %x) = %x", regoff, rval); 451 return (rval); 452} 453 454static void 455isp_sbus_wr_reg(ispsoftc_t *isp, int regoff, uint16_t val) 456{ 457 struct isp_sbussoftc *sbs = (struct isp_sbussoftc *) isp; 458 int offset = sbs->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 459 offset += (regoff & 0xff); 460 isp_prt(isp, ISP_LOGDEBUG3, 461 "isp_sbus_wr_reg(off %x) = %x", regoff, val); 462 bus_space_write_2(sbs->sbus_st, sbs->sbus_sh, offset, val); 463} 464 465struct imush { 466 ispsoftc_t *isp; 467 int error; 468}; 469 470static void imc(void *, bus_dma_segment_t *, int, int); 471 472static void 473imc(void *arg, bus_dma_segment_t *segs, int nseg, int error) 474{ 475 struct imush *imushp = (struct imush *) arg; 476 if (error) { 477 imushp->error = error; 478 } else { 479 ispsoftc_t *isp =imushp->isp; 480 bus_addr_t addr = segs->ds_addr; 481 482 isp->isp_rquest_dma = addr; 483 addr += ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); 484 isp->isp_result_dma = addr; 485 } 486} 487 488/* 489 * Should be BUS_SPACE_MAXSIZE, but MAXPHYS is larger than BUS_SPACE_MAXSIZE 490 */ 491#define ISP_NSEGS ((MAXPHYS / PAGE_SIZE) + 1) 492 493static int 494isp_sbus_mbxdma(ispsoftc_t *isp) 495{ 496 struct isp_sbussoftc *sbs = (struct isp_sbussoftc *)isp; 497 caddr_t base; 498 uint32_t len; 499 int i, error, ns; 500 struct imush im; 501 502 /* 503 * Already been here? If so, leave... 504 */ 505 if (isp->isp_rquest) { 506 return (0); 507 } 508 509 ISP_UNLOCK(isp); 510 511 if (bus_dma_tag_create(NULL, 1, BUS_SPACE_MAXADDR_24BIT+1, 512 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR_32BIT, 513 NULL, NULL, BUS_SPACE_MAXSIZE_32BIT, ISP_NSEGS, 514 BUS_SPACE_MAXADDR_24BIT, 0, busdma_lock_mutex, &Giant, 515 &sbs->dmat)) { 516 isp_prt(isp, ISP_LOGERR, "could not create master dma tag"); 517 ISP_LOCK(isp); 518 return(1); 519 } 520 521 len = sizeof (XS_T **) * isp->isp_maxcmds; 522 isp->isp_xflist = (XS_T **) malloc(len, M_DEVBUF, M_WAITOK | M_ZERO); 523 if (isp->isp_xflist == NULL) { 524 isp_prt(isp, ISP_LOGERR, "cannot alloc xflist array"); 525 ISP_LOCK(isp); 526 return (1); 527 } 528 len = sizeof (bus_dmamap_t) * isp->isp_maxcmds; 529 sbs->dmaps = (bus_dmamap_t *) malloc(len, M_DEVBUF, M_WAITOK); 530 if (sbs->dmaps == NULL) { 531 isp_prt(isp, ISP_LOGERR, "can't alloc dma map storage"); 532 free(isp->isp_xflist, M_DEVBUF); 533 ISP_LOCK(isp); 534 return (1); 535 } 536 537 /* 538 * Allocate and map the request, result queues, plus FC scratch area. 539 */ 540 len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); 541 len += ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp)); 542 543 ns = (len / PAGE_SIZE) + 1; 544 if (bus_dma_tag_create(sbs->dmat, QENTRY_LEN, BUS_SPACE_MAXADDR_24BIT+1, 545 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR_32BIT, NULL, NULL, 546 len, ns, BUS_SPACE_MAXADDR_24BIT, 0, busdma_lock_mutex, &Giant, 547 &isp->isp_cdmat)) { 548 isp_prt(isp, ISP_LOGERR, 549 "cannot create a dma tag for control spaces"); 550 free(sbs->dmaps, M_DEVBUF); 551 free(isp->isp_xflist, M_DEVBUF); 552 ISP_LOCK(isp); 553 return (1); 554 } 555 556 if (bus_dmamem_alloc(isp->isp_cdmat, (void **)&base, BUS_DMA_NOWAIT, 557 &isp->isp_cdmap) != 0) { 558 isp_prt(isp, ISP_LOGERR, 559 "cannot allocate %d bytes of CCB memory", len); 560 bus_dma_tag_destroy(isp->isp_cdmat); 561 free(isp->isp_xflist, M_DEVBUF); 562 free(sbs->dmaps, M_DEVBUF); 563 ISP_LOCK(isp); 564 return (1); 565 } 566 567 for (i = 0; i < isp->isp_maxcmds; i++) { 568 error = bus_dmamap_create(sbs->dmat, 0, &sbs->dmaps[i]); 569 if (error) { 570 isp_prt(isp, ISP_LOGERR, 571 "error %d creating per-cmd DMA maps", error); 572 while (--i >= 0) { 573 bus_dmamap_destroy(sbs->dmat, sbs->dmaps[i]); 574 } 575 goto bad; 576 } 577 } 578 579 im.isp = isp; 580 im.error = 0; 581 bus_dmamap_load(isp->isp_cdmat, isp->isp_cdmap, base, len, imc, &im, 0); 582 if (im.error) { 583 isp_prt(isp, ISP_LOGERR, 584 "error %d loading dma map for control areas", im.error); 585 goto bad; 586 } 587 588 isp->isp_rquest = base; 589 base += ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); 590 ISP_LOCK(isp); 591 isp->isp_result = base; 592 return (0); 593 594bad: 595 bus_dmamem_free(isp->isp_cdmat, base, isp->isp_cdmap); 596 bus_dma_tag_destroy(isp->isp_cdmat); 597 free(isp->isp_xflist, M_DEVBUF); 598 free(sbs->dmaps, M_DEVBUF); 599 ISP_LOCK(isp); 600 isp->isp_rquest = NULL; 601 return (1); 602} 603 604typedef struct { 605 ispsoftc_t *isp; 606 void *cmd_token; 607 void *rq; 608 uint16_t *nxtip; 609 uint16_t optr; 610 int error; 611} mush_t; 612 613#define MUSHERR_NOQENTRIES -2 614 615 616static void dma2(void *, bus_dma_segment_t *, int, int); 617 618static void 619dma2(void *arg, bus_dma_segment_t *dm_segs, int nseg, int error) 620{ 621 mush_t *mp; 622 ispsoftc_t *isp; 623 struct ccb_scsiio *csio; 624 struct isp_sbussoftc *sbs; 625 bus_dmamap_t *dp; 626 bus_dma_segment_t *eseg; 627 ispreq_t *rq; 628 int seglim, datalen; 629 uint16_t nxti; 630 631 mp = (mush_t *) arg; 632 if (error) { 633 mp->error = error; 634 return; 635 } 636 637 if (nseg < 1) { 638 isp_prt(mp->isp, ISP_LOGERR, "bad segment count (%d)", nseg); 639 mp->error = EFAULT; 640 return; 641 } 642 csio = mp->cmd_token; 643 isp = mp->isp; 644 rq = mp->rq; 645 sbs = (struct isp_sbussoftc *)mp->isp; 646 dp = &sbs->dmaps[isp_handle_index(rq->req_handle)]; 647 nxti = *mp->nxtip; 648 649 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 650 bus_dmamap_sync(sbs->dmat, *dp, BUS_DMASYNC_PREREAD); 651 } else { 652 bus_dmamap_sync(sbs->dmat, *dp, BUS_DMASYNC_PREWRITE); 653 } 654 655 datalen = XS_XFRLEN(csio); 656 657 /* 658 * We're passed an initial partially filled in entry that 659 * has most fields filled in except for data transfer 660 * related values. 661 * 662 * Our job is to fill in the initial request queue entry and 663 * then to start allocating and filling in continuation entries 664 * until we've covered the entire transfer. 665 */ 666 667 if (csio->cdb_len > 12) { 668 seglim = 0; 669 } else { 670 seglim = ISP_RQDSEG; 671 } 672 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 673 rq->req_flags |= REQFLAG_DATA_IN; 674 } else { 675 rq->req_flags |= REQFLAG_DATA_OUT; 676 } 677 678 eseg = dm_segs + nseg; 679 680 while (datalen != 0 && rq->req_seg_count < seglim && dm_segs != eseg) { 681 rq->req_dataseg[rq->req_seg_count].ds_base = dm_segs->ds_addr; 682 rq->req_dataseg[rq->req_seg_count].ds_count = dm_segs->ds_len; 683 datalen -= dm_segs->ds_len; 684 rq->req_seg_count++; 685 dm_segs++; 686 } 687 688 while (datalen > 0 && dm_segs != eseg) { 689 uint16_t onxti; 690 ispcontreq_t local, *crq = &local, *cqe; 691 692 cqe = (ispcontreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, nxti); 693 onxti = nxti; 694 nxti = ISP_NXT_QENTRY(onxti, RQUEST_QUEUE_LEN(isp)); 695 if (nxti == mp->optr) { 696 isp_prt(isp, ISP_LOGDEBUG0, "Request Queue Overflow++"); 697 mp->error = MUSHERR_NOQENTRIES; 698 return; 699 } 700 rq->req_header.rqs_entry_count++; 701 MEMZERO((void *)crq, sizeof (*crq)); 702 crq->req_header.rqs_entry_count = 1; 703 crq->req_header.rqs_entry_type = RQSTYPE_DATASEG; 704 705 seglim = 0; 706 while (datalen > 0 && seglim < ISP_CDSEG && dm_segs != eseg) { 707 crq->req_dataseg[seglim].ds_base = 708 dm_segs->ds_addr; 709 crq->req_dataseg[seglim].ds_count = 710 dm_segs->ds_len; 711 rq->req_seg_count++; 712 dm_segs++; 713 seglim++; 714 datalen -= dm_segs->ds_len; 715 } 716 isp_put_cont_req(isp, crq, cqe); 717 MEMORYBARRIER(isp, SYNC_REQUEST, onxti, QENTRY_LEN); 718 } 719 *mp->nxtip = nxti; 720} 721 722static int 723isp_sbus_dmasetup(ispsoftc_t *isp, struct ccb_scsiio *csio, ispreq_t *rq, 724 uint16_t *nxtip, uint16_t optr) 725{ 726 struct isp_sbussoftc *sbs = (struct isp_sbussoftc *)isp; 727 ispreq_t *qep; 728 bus_dmamap_t *dp = NULL; 729 mush_t mush, *mp; 730 void (*eptr)(void *, bus_dma_segment_t *, int, int); 731 732 qep = (ispreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, isp->isp_reqidx); 733 eptr = dma2; 734 735 736 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_NONE || 737 (csio->dxfer_len == 0)) { 738 rq->req_seg_count = 1; 739 goto mbxsync; 740 } 741 742 /* 743 * Do a virtual grapevine step to collect info for 744 * the callback dma allocation that we have to use... 745 */ 746 mp = &mush; 747 mp->isp = isp; 748 mp->cmd_token = csio; 749 mp->rq = rq; 750 mp->nxtip = nxtip; 751 mp->optr = optr; 752 mp->error = 0; 753 754 if ((csio->ccb_h.flags & CAM_SCATTER_VALID) == 0) { 755 if ((csio->ccb_h.flags & CAM_DATA_PHYS) == 0) { 756 int error, s; 757 dp = &sbs->dmaps[isp_handle_index(rq->req_handle)]; 758 s = splsoftvm(); 759 error = bus_dmamap_load(sbs->dmat, *dp, 760 csio->data_ptr, csio->dxfer_len, eptr, mp, 0); 761 if (error == EINPROGRESS) { 762 bus_dmamap_unload(sbs->dmat, *dp); 763 mp->error = EINVAL; 764 isp_prt(isp, ISP_LOGERR, 765 "deferred dma allocation not supported"); 766 } else if (error && mp->error == 0) { 767#ifdef DIAGNOSTIC 768 isp_prt(isp, ISP_LOGERR, 769 "error %d in dma mapping code", error); 770#endif 771 mp->error = error; 772 } 773 splx(s); 774 } else { 775 /* Pointer to physical buffer */ 776 struct bus_dma_segment seg; 777 seg.ds_addr = (bus_addr_t)csio->data_ptr; 778 seg.ds_len = csio->dxfer_len; 779 (*eptr)(mp, &seg, 1, 0); 780 } 781 } else { 782 struct bus_dma_segment *segs; 783 784 if ((csio->ccb_h.flags & CAM_DATA_PHYS) != 0) { 785 isp_prt(isp, ISP_LOGERR, 786 "Physical segment pointers unsupported"); 787 mp->error = EINVAL; 788 } else if ((csio->ccb_h.flags & CAM_SG_LIST_PHYS) == 0) { 789 isp_prt(isp, ISP_LOGERR, 790 "Virtual segment addresses unsupported"); 791 mp->error = EINVAL; 792 } else { 793 /* Just use the segments provided */ 794 segs = (struct bus_dma_segment *) csio->data_ptr; 795 (*eptr)(mp, segs, csio->sglist_cnt, 0); 796 } 797 } 798 if (mp->error) { 799 int retval = CMD_COMPLETE; 800 if (mp->error == MUSHERR_NOQENTRIES) { 801 retval = CMD_EAGAIN; 802 } else if (mp->error == EFBIG) { 803 XS_SETERR(csio, CAM_REQ_TOO_BIG); 804 } else if (mp->error == EINVAL) { 805 XS_SETERR(csio, CAM_REQ_INVALID); 806 } else { 807 XS_SETERR(csio, CAM_UNREC_HBA_ERROR); 808 } 809 return (retval); 810 } 811mbxsync: 812 switch (rq->req_header.rqs_entry_type) { 813 case RQSTYPE_REQUEST: 814 isp_put_request(isp, rq, qep); 815 break; 816 case RQSTYPE_CMDONLY: 817 isp_put_extended_request(isp, (ispextreq_t *)rq, 818 (ispextreq_t *)qep); 819 break; 820 } 821 return (CMD_QUEUED); 822} 823 824static void 825isp_sbus_dmateardown(ispsoftc_t *isp, XS_T *xs, uint16_t handle) 826{ 827 struct isp_sbussoftc *sbs = (struct isp_sbussoftc *)isp; 828 bus_dmamap_t *dp = &sbs->dmaps[isp_handle_index(handle)]; 829 if ((xs->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 830 bus_dmamap_sync(sbs->dmat, *dp, BUS_DMASYNC_POSTREAD); 831 } else { 832 bus_dmamap_sync(sbs->dmat, *dp, BUS_DMASYNC_POSTWRITE); 833 } 834 bus_dmamap_unload(sbs->dmat, *dp); 835} 836 837 838static void 839isp_sbus_reset1(ispsoftc_t *isp) 840{ 841 /* enable interrupts */ 842 ENABLE_INTS(isp); 843} 844 845static void 846isp_sbus_dumpregs(ispsoftc_t *isp, const char *msg) 847{ 848 if (msg) 849 printf("%s: %s\n", device_get_nameunit(isp->isp_dev), msg); 850 else 851 printf("%s:\n", device_get_nameunit(isp->isp_dev)); 852 printf(" biu_conf1=%x", ISP_READ(isp, BIU_CONF1)); 853 printf(" biu_icr=%x biu_isr=%x biu_sema=%x ", ISP_READ(isp, BIU_ICR), 854 ISP_READ(isp, BIU_ISR), ISP_READ(isp, BIU_SEMA)); 855 printf("risc_hccr=%x\n", ISP_READ(isp, HCCR)); 856 857 858 ISP_WRITE(isp, HCCR, HCCR_CMD_PAUSE); 859 printf(" cdma_conf=%x cdma_sts=%x cdma_fifostat=%x\n", 860 ISP_READ(isp, CDMA_CONF), ISP_READ(isp, CDMA_STATUS), 861 ISP_READ(isp, CDMA_FIFO_STS)); 862 printf(" ddma_conf=%x ddma_sts=%x ddma_fifostat=%x\n", 863 ISP_READ(isp, DDMA_CONF), ISP_READ(isp, DDMA_STATUS), 864 ISP_READ(isp, DDMA_FIFO_STS)); 865 printf(" sxp_int=%x sxp_gross=%x sxp(scsi_ctrl)=%x\n", 866 ISP_READ(isp, SXP_INTERRUPT), 867 ISP_READ(isp, SXP_GROSS_ERR), 868 ISP_READ(isp, SXP_PINS_CTRL)); 869 ISP_WRITE(isp, HCCR, HCCR_CMD_RELEASE); 870 printf(" mbox regs: %x %x %x %x %x\n", 871 ISP_READ(isp, OUTMAILBOX0), ISP_READ(isp, OUTMAILBOX1), 872 ISP_READ(isp, OUTMAILBOX2), ISP_READ(isp, OUTMAILBOX3), 873 ISP_READ(isp, OUTMAILBOX4)); 874} 875