isp_sbus.c revision 127346
1/*- 2 * PCI specific probe and attach routines for Qlogic ISP SCSI adapters. 3 * FreeBSD Version. 4 * 5 * Copyright (c) 1997, 1998, 1999, 2000, 2001 by Matthew Jacob 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice immediately at the beginning of the file, without modification, 12 * this list of conditions, and the following disclaimer. 13 * 2. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29#include <sys/cdefs.h> 30__FBSDID("$FreeBSD: head/sys/dev/isp/isp_sbus.c 127346 2004-03-23 23:41:39Z tmm $"); 31 32#include <sys/param.h> 33#include <sys/systm.h> 34#include <sys/bus.h> 35#include <sys/kernel.h> 36#include <sys/resource.h> 37#include <machine/bus.h> 38#include <machine/resource.h> 39#include <sys/rman.h> 40#include <dev/ofw/openfirm.h> 41#include <machine/ofw_machdep.h> 42#include <sparc64/sbus/sbusvar.h> 43 44#include <dev/isp/isp_freebsd.h> 45 46static u_int16_t isp_sbus_rd_reg(struct ispsoftc *, int); 47static void isp_sbus_wr_reg(struct ispsoftc *, int, u_int16_t); 48static int 49isp_sbus_rd_isr(struct ispsoftc *, u_int16_t *, u_int16_t *, u_int16_t *); 50static int isp_sbus_mbxdma(struct ispsoftc *); 51static int 52isp_sbus_dmasetup(struct ispsoftc *, XS_T *, ispreq_t *, u_int16_t *, u_int16_t); 53static void 54isp_sbus_dmateardown(struct ispsoftc *, XS_T *, u_int16_t); 55 56static void isp_sbus_reset1(struct ispsoftc *); 57static void isp_sbus_dumpregs(struct ispsoftc *, const char *); 58 59static struct ispmdvec mdvec = { 60 isp_sbus_rd_isr, 61 isp_sbus_rd_reg, 62 isp_sbus_wr_reg, 63 isp_sbus_mbxdma, 64 isp_sbus_dmasetup, 65 isp_sbus_dmateardown, 66 NULL, 67 isp_sbus_reset1, 68 isp_sbus_dumpregs, 69 NULL, 70 BIU_BURST_ENABLE|BIU_PCI_CONF1_FIFO_64 71}; 72 73static int isp_sbus_probe (device_t); 74static int isp_sbus_attach (device_t); 75 76 77struct isp_sbussoftc { 78 struct ispsoftc sbus_isp; 79 device_t sbus_dev; 80 struct resource * sbus_reg; 81 bus_space_tag_t sbus_st; 82 bus_space_handle_t sbus_sh; 83 void * ih; 84 int16_t sbus_poff[_NREG_BLKS]; 85 bus_dma_tag_t dmat; 86 bus_dmamap_t *dmaps; 87 sdparam sbus_param; 88 struct ispmdvec sbus_mdvec; 89 struct resource * sbus_ires; 90}; 91 92extern ispfwfunc *isp_get_firmware_p; 93 94static device_method_t isp_sbus_methods[] = { 95 /* Device interface */ 96 DEVMETHOD(device_probe, isp_sbus_probe), 97 DEVMETHOD(device_attach, isp_sbus_attach), 98 { 0, 0 } 99}; 100static void isp_sbus_intr(void *); 101 102static driver_t isp_sbus_driver = { 103 "isp", isp_sbus_methods, sizeof (struct isp_sbussoftc) 104}; 105static devclass_t isp_devclass; 106DRIVER_MODULE(isp, sbus, isp_sbus_driver, isp_devclass, 0, 0); 107 108static int 109isp_sbus_probe(device_t dev) 110{ 111 int found = 0; 112 char *name = sbus_get_name(dev); 113 if (strcmp(name, "SUNW,isp") == 0 || 114 strcmp(name, "QLGC,isp") == 0 || 115 strcmp(name, "ptisp") == 0 || 116 strcmp(name, "PTI,ptisp") == 0) { 117 found++; 118 } 119 if (!found) 120 return (ENXIO); 121 122 if (isp_announced == 0 && bootverbose) { 123 printf("Qlogic ISP Driver, FreeBSD Version %d.%d, " 124 "Core Version %d.%d\n", 125 ISP_PLATFORM_VERSION_MAJOR, ISP_PLATFORM_VERSION_MINOR, 126 ISP_CORE_VERSION_MAJOR, ISP_CORE_VERSION_MINOR); 127 isp_announced++; 128 } 129 return (0); 130} 131 132static int 133isp_sbus_attach(device_t dev) 134{ 135 struct resource *regs; 136 int tval, iqd, isp_debug, role, rid, ispburst, freq; 137 struct isp_sbussoftc *sbs; 138 struct ispsoftc *isp = NULL; 139 int locksetup = 0; 140 141 /* 142 * Figure out if we're supposed to skip this one. 143 * If we are, we actually go to ISP_ROLE_NONE. 144 */ 145 146 tval = 0; 147 if (resource_int_value(device_get_name(dev), device_get_unit(dev), 148 "disable", &tval) == 0 && tval) { 149 device_printf(dev, "device is disabled\n"); 150 /* but return 0 so the !$)$)*!$*) unit isn't reused */ 151 return (0); 152 } 153 154 role = 0; 155 if (resource_int_value(device_get_name(dev), device_get_unit(dev), 156 "role", &role) == 0 && 157 ((role & ~(ISP_ROLE_INITIATOR|ISP_ROLE_TARGET)) == 0)) { 158 device_printf(dev, "setting role to 0x%x\n", role); 159 } else { 160#ifdef ISP_TARGET_MODE 161 role = ISP_ROLE_INITIATOR|ISP_ROLE_TARGET; 162#else 163 role = ISP_DEFAULT_ROLES; 164#endif 165 } 166 167 sbs = malloc(sizeof (*sbs), M_DEVBUF, M_NOWAIT | M_ZERO); 168 if (sbs == NULL) { 169 device_printf(dev, "cannot allocate softc\n"); 170 return (ENOMEM); 171 } 172 173 regs = NULL; 174 iqd = 0; 175 176 rid = 0; 177 regs = 178 bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); 179 if (regs == 0) { 180 device_printf(dev, "unable to map registers\n"); 181 goto bad; 182 } 183 sbs->sbus_dev = dev; 184 sbs->sbus_reg = regs; 185 sbs->sbus_st = rman_get_bustag(regs); 186 sbs->sbus_sh = rman_get_bushandle(regs); 187 sbs->sbus_mdvec = mdvec; 188 189 sbs->sbus_poff[BIU_BLOCK >> _BLK_REG_SHFT] = BIU_REGS_OFF; 190 sbs->sbus_poff[MBOX_BLOCK >> _BLK_REG_SHFT] = SBUS_MBOX_REGS_OFF; 191 sbs->sbus_poff[SXP_BLOCK >> _BLK_REG_SHFT] = SBUS_SXP_REGS_OFF; 192 sbs->sbus_poff[RISC_BLOCK >> _BLK_REG_SHFT] = SBUS_RISC_REGS_OFF; 193 sbs->sbus_poff[DMA_BLOCK >> _BLK_REG_SHFT] = DMA_REGS_OFF; 194 isp = &sbs->sbus_isp; 195 isp->isp_mdvec = &sbs->sbus_mdvec; 196 isp->isp_bustype = ISP_BT_SBUS; 197 isp->isp_type = ISP_HA_SCSI_UNKNOWN; 198 isp->isp_param = &sbs->sbus_param; 199 isp->isp_revision = 0; /* XXX */ 200 isp->isp_role = role; 201 isp->isp_dev = dev; 202 203 freq = sbus_get_clockfreq(dev); 204 if (freq) { 205 /* 206 * Convert from HZ to MHz, rounding up. 207 */ 208 freq = (freq + 500000)/1000000; 209 } else { 210 freq = 25; 211 } 212 sbs->sbus_mdvec.dv_clock = freq << 8; 213 214 /* 215 * Now figure out what the proper burst sizes, etc., to use. 216 * Unfortunately, there is no ddi_dma_burstsizes here which 217 * walks up the tree finding the limiting burst size node (if 218 * any). We just use what's here for isp. 219 */ 220 ispburst = sbus_get_burstsz(dev); 221 if (ispburst == 0) { 222 ispburst = SBUS_BURST_32 - 1; 223 } 224 sbs->sbus_mdvec.dv_conf1 = 0; 225 if (ispburst & (1 << 5)) { 226 sbs->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_32; 227 } else if (ispburst & (1 << 4)) { 228 sbs->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_16; 229 } else if (ispburst & (1 << 3)) { 230 sbs->sbus_mdvec.dv_conf1 = 231 BIU_SBUS_CONF1_BURST8 | BIU_SBUS_CONF1_FIFO_8; 232 } 233 if (sbs->sbus_mdvec.dv_conf1) { 234 sbs->sbus_mdvec.dv_conf1 |= BIU_BURST_ENABLE; 235 } 236 237 /* 238 * Some early versions of the PTI SBus adapter 239 * would fail in trying to download (via poking) 240 * FW. We give up on them. 241 */ 242 if (strcmp("PTI,ptisp", sbus_get_name(dev)) == 0 || 243 strcmp("ptisp", sbus_get_name(dev)) == 0) { 244 isp->isp_confopts |= ISP_CFG_NORELOAD; 245 } 246 247 /* 248 * We don't trust NVRAM on SBus cards 249 */ 250 isp->isp_confopts |= ISP_CFG_NONVRAM; 251 252 253 /* 254 * Try and find firmware for this device. 255 */ 256 257 if (isp_get_firmware_p) { 258 (*isp_get_firmware_p)(0, 0, 0x1000, &sbs->sbus_mdvec.dv_ispfw); 259 } 260 261 iqd = 0; 262 sbs->sbus_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ, &iqd, 263 RF_ACTIVE | RF_SHAREABLE); 264 if (sbs->sbus_ires == NULL) { 265 device_printf(dev, "could not allocate interrupt\n"); 266 goto bad; 267 } 268 269 tval = 0; 270 if (resource_int_value(device_get_name(dev), device_get_unit(dev), 271 "fwload_disable", &tval) == 0 && tval != 0) { 272 isp->isp_confopts |= ISP_CFG_NORELOAD; 273 } 274 275 isp->isp_osinfo.default_id = -1; 276 if (resource_int_value(device_get_name(dev), device_get_unit(dev), 277 "iid", &tval) == 0) { 278 isp->isp_osinfo.default_id = tval; 279 isp->isp_confopts |= ISP_CFG_OWNLOOPID; 280 } 281 if (isp->isp_osinfo.default_id == -1) { 282 /* 283 * XXX: should be a way to get properties w/o having 284 * XXX: to call OF_xxx functions 285 */ 286 isp->isp_osinfo.default_id = 7; 287 } 288 289 isp_debug = 0; 290 (void) resource_int_value(device_get_name(dev), device_get_unit(dev), 291 "debug", &isp_debug); 292 293 /* Make sure the lock is set up. */ 294 mtx_init(&isp->isp_osinfo.lock, "isp", NULL, MTX_DEF); 295 locksetup++; 296 297 if (bus_setup_intr(dev, sbs->sbus_ires, ISP_IFLAGS, 298 isp_sbus_intr, isp, &sbs->ih)) { 299 device_printf(dev, "could not setup interrupt\n"); 300 goto bad; 301 } 302 303 /* 304 * Set up logging levels. 305 */ 306 if (isp_debug) { 307 isp->isp_dblev = isp_debug; 308 } else { 309 isp->isp_dblev = ISP_LOGWARN|ISP_LOGERR; 310 } 311 if (bootverbose) 312 isp->isp_dblev |= ISP_LOGCONFIG|ISP_LOGINFO; 313 314 /* 315 * Make sure we're in reset state. 316 */ 317 ISP_LOCK(isp); 318 isp_reset(isp); 319 if (isp->isp_state != ISP_RESETSTATE) { 320 ISP_UNLOCK(isp); 321 goto bad; 322 } 323 isp_init(isp); 324 if (isp->isp_role != ISP_ROLE_NONE && isp->isp_state != ISP_INITSTATE) { 325 isp_uninit(isp); 326 ISP_UNLOCK(isp); 327 goto bad; 328 } 329 isp_attach(isp); 330 if (isp->isp_role != ISP_ROLE_NONE && isp->isp_state != ISP_RUNSTATE) { 331 isp_uninit(isp); 332 ISP_UNLOCK(isp); 333 goto bad; 334 } 335 /* 336 * XXXX: Here is where we might unload the f/w module 337 * XXXX: (or decrease the reference count to it). 338 */ 339 ISP_UNLOCK(isp); 340 return (0); 341 342bad: 343 344 if (sbs && sbs->ih) { 345 (void) bus_teardown_intr(dev, sbs->sbus_ires, sbs->ih); 346 } 347 348 if (locksetup && isp) { 349 mtx_destroy(&isp->isp_osinfo.lock); 350 } 351 352 if (sbs && sbs->sbus_ires) { 353 bus_release_resource(dev, SYS_RES_IRQ, iqd, sbs->sbus_ires); 354 } 355 356 357 if (regs) { 358 (void) bus_release_resource(dev, 0, 0, regs); 359 } 360 361 if (sbs) { 362 if (sbs->sbus_isp.isp_param) 363 free(sbs->sbus_isp.isp_param, M_DEVBUF); 364 free(sbs, M_DEVBUF); 365 } 366 367 /* 368 * XXXX: Here is where we might unload the f/w module 369 * XXXX: (or decrease the reference count to it). 370 */ 371 return (ENXIO); 372} 373 374static void 375isp_sbus_intr(void *arg) 376{ 377 struct ispsoftc *isp = arg; 378 u_int16_t isr, sema, mbox; 379 380 ISP_LOCK(isp); 381 isp->isp_intcnt++; 382 if (ISP_READ_ISR(isp, &isr, &sema, &mbox) == 0) { 383 isp->isp_intbogus++; 384 } else { 385 int iok = isp->isp_osinfo.intsok; 386 isp->isp_osinfo.intsok = 0; 387 isp_intr(isp, isr, sema, mbox); 388 isp->isp_osinfo.intsok = iok; 389 } 390 ISP_UNLOCK(isp); 391} 392 393#define IspVirt2Off(a, x) \ 394 (((struct isp_sbussoftc *)a)->sbus_poff[((x) & _BLK_REG_MASK) >> \ 395 _BLK_REG_SHFT] + ((x) & 0xff)) 396 397#define BXR2(sbc, off) \ 398 bus_space_read_2(sbc->sbus_st, sbc->sbus_sh, off) 399 400static int 401isp_sbus_rd_isr(struct ispsoftc *isp, u_int16_t *isrp, 402 u_int16_t *semap, u_int16_t *mbp) 403{ 404 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 405 u_int16_t isr, sema; 406 407 isr = BXR2(sbc, IspVirt2Off(isp, BIU_ISR)); 408 sema = BXR2(sbc, IspVirt2Off(isp, BIU_SEMA)); 409 isp_prt(isp, ISP_LOGDEBUG3, "ISR 0x%x SEMA 0x%x", isr, sema); 410 isr &= INT_PENDING_MASK(isp); 411 sema &= BIU_SEMA_LOCK; 412 if (isr == 0 && sema == 0) { 413 return (0); 414 } 415 *isrp = isr; 416 if ((*semap = sema) != 0) { 417 *mbp = BXR2(sbc, IspVirt2Off(isp, OUTMAILBOX0)); 418 } 419 return (1); 420} 421 422static u_int16_t 423isp_sbus_rd_reg(struct ispsoftc *isp, int regoff) 424{ 425 u_int16_t rval; 426 struct isp_sbussoftc *sbs = (struct isp_sbussoftc *) isp; 427 int offset = sbs->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 428 offset += (regoff & 0xff); 429 rval = bus_space_read_2(sbs->sbus_st, sbs->sbus_sh, offset); 430 isp_prt(isp, ISP_LOGDEBUG3, 431 "isp_sbus_rd_reg(off %x) = %x", regoff, rval); 432 return (rval); 433} 434 435static void 436isp_sbus_wr_reg(struct ispsoftc *isp, int regoff, u_int16_t val) 437{ 438 struct isp_sbussoftc *sbs = (struct isp_sbussoftc *) isp; 439 int offset = sbs->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 440 offset += (regoff & 0xff); 441 isp_prt(isp, ISP_LOGDEBUG3, 442 "isp_sbus_wr_reg(off %x) = %x", regoff, val); 443 bus_space_write_2(sbs->sbus_st, sbs->sbus_sh, offset, val); 444} 445 446struct imush { 447 struct ispsoftc *isp; 448 int error; 449}; 450 451static void imc(void *, bus_dma_segment_t *, int, int); 452 453static void 454imc(void *arg, bus_dma_segment_t *segs, int nseg, int error) 455{ 456 struct imush *imushp = (struct imush *) arg; 457 if (error) { 458 imushp->error = error; 459 } else { 460 struct ispsoftc *isp =imushp->isp; 461 bus_addr_t addr = segs->ds_addr; 462 463 isp->isp_rquest_dma = addr; 464 addr += ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); 465 isp->isp_result_dma = addr; 466 } 467} 468 469/* 470 * Should be BUS_SPACE_MAXSIZE, but MAXPHYS is larger than BUS_SPACE_MAXSIZE 471 */ 472#define ISP_NSEGS ((MAXPHYS / PAGE_SIZE) + 1) 473 474static int 475isp_sbus_mbxdma(struct ispsoftc *isp) 476{ 477 struct isp_sbussoftc *sbs = (struct isp_sbussoftc *)isp; 478 caddr_t base; 479 u_int32_t len; 480 int i, error, ns; 481 struct imush im; 482 483 /* 484 * Already been here? If so, leave... 485 */ 486 if (isp->isp_rquest) { 487 return (0); 488 } 489 490 ISP_UNLOCK(isp); 491 492 if (bus_dma_tag_create(NULL, 1, BUS_SPACE_MAXADDR_24BIT+1, 493 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR_32BIT, 494 NULL, NULL, BUS_SPACE_MAXSIZE_32BIT, ISP_NSEGS, 495 BUS_SPACE_MAXADDR_24BIT, 0, busdma_lock_mutex, &Giant, 496 &sbs->dmat)) { 497 isp_prt(isp, ISP_LOGERR, "could not create master dma tag"); 498 ISP_LOCK(isp); 499 return(1); 500 } 501 502 len = sizeof (XS_T **) * isp->isp_maxcmds; 503 isp->isp_xflist = (XS_T **) malloc(len, M_DEVBUF, M_WAITOK | M_ZERO); 504 if (isp->isp_xflist == NULL) { 505 isp_prt(isp, ISP_LOGERR, "cannot alloc xflist array"); 506 ISP_LOCK(isp); 507 return (1); 508 } 509 len = sizeof (bus_dmamap_t) * isp->isp_maxcmds; 510 sbs->dmaps = (bus_dmamap_t *) malloc(len, M_DEVBUF, M_WAITOK); 511 if (sbs->dmaps == NULL) { 512 isp_prt(isp, ISP_LOGERR, "can't alloc dma map storage"); 513 free(isp->isp_xflist, M_DEVBUF); 514 ISP_LOCK(isp); 515 return (1); 516 } 517 518 /* 519 * Allocate and map the request, result queues, plus FC scratch area. 520 */ 521 len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); 522 len += ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp)); 523 524 ns = (len / PAGE_SIZE) + 1; 525 if (bus_dma_tag_create(sbs->dmat, QENTRY_LEN, BUS_SPACE_MAXADDR_24BIT+1, 526 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR_32BIT, NULL, NULL, 527 len, ns, BUS_SPACE_MAXADDR_24BIT, 0, busdma_lock_mutex, &Giant, 528 &isp->isp_cdmat)) { 529 isp_prt(isp, ISP_LOGERR, 530 "cannot create a dma tag for control spaces"); 531 free(sbs->dmaps, M_DEVBUF); 532 free(isp->isp_xflist, M_DEVBUF); 533 ISP_LOCK(isp); 534 return (1); 535 } 536 537 if (bus_dmamem_alloc(isp->isp_cdmat, (void **)&base, BUS_DMA_NOWAIT, 538 &isp->isp_cdmap) != 0) { 539 isp_prt(isp, ISP_LOGERR, 540 "cannot allocate %d bytes of CCB memory", len); 541 bus_dma_tag_destroy(isp->isp_cdmat); 542 free(isp->isp_xflist, M_DEVBUF); 543 free(sbs->dmaps, M_DEVBUF); 544 ISP_LOCK(isp); 545 return (1); 546 } 547 548 for (i = 0; i < isp->isp_maxcmds; i++) { 549 error = bus_dmamap_create(sbs->dmat, 0, &sbs->dmaps[i]); 550 if (error) { 551 isp_prt(isp, ISP_LOGERR, 552 "error %d creating per-cmd DMA maps", error); 553 while (--i >= 0) { 554 bus_dmamap_destroy(sbs->dmat, sbs->dmaps[i]); 555 } 556 goto bad; 557 } 558 } 559 560 im.isp = isp; 561 im.error = 0; 562 bus_dmamap_load(isp->isp_cdmat, isp->isp_cdmap, base, len, imc, &im, 0); 563 if (im.error) { 564 isp_prt(isp, ISP_LOGERR, 565 "error %d loading dma map for control areas", im.error); 566 goto bad; 567 } 568 569 isp->isp_rquest = base; 570 base += ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); 571 ISP_LOCK(isp); 572 isp->isp_result = base; 573 return (0); 574 575bad: 576 bus_dmamem_free(isp->isp_cdmat, base, isp->isp_cdmap); 577 bus_dma_tag_destroy(isp->isp_cdmat); 578 free(isp->isp_xflist, M_DEVBUF); 579 free(sbs->dmaps, M_DEVBUF); 580 ISP_LOCK(isp); 581 isp->isp_rquest = NULL; 582 return (1); 583} 584 585typedef struct { 586 struct ispsoftc *isp; 587 void *cmd_token; 588 void *rq; 589 u_int16_t *nxtip; 590 u_int16_t optr; 591 u_int error; 592} mush_t; 593 594#define MUSHERR_NOQENTRIES -2 595 596 597static void dma2(void *, bus_dma_segment_t *, int, int); 598 599static void 600dma2(void *arg, bus_dma_segment_t *dm_segs, int nseg, int error) 601{ 602 mush_t *mp; 603 struct ispsoftc *isp; 604 struct ccb_scsiio *csio; 605 struct isp_sbussoftc *sbs; 606 bus_dmamap_t *dp; 607 bus_dma_segment_t *eseg; 608 ispreq_t *rq; 609 int seglim, datalen; 610 u_int16_t nxti; 611 612 mp = (mush_t *) arg; 613 if (error) { 614 mp->error = error; 615 return; 616 } 617 618 if (nseg < 1) { 619 isp_prt(mp->isp, ISP_LOGERR, "bad segment count (%d)", nseg); 620 mp->error = EFAULT; 621 return; 622 } 623 csio = mp->cmd_token; 624 isp = mp->isp; 625 rq = mp->rq; 626 sbs = (struct isp_sbussoftc *)mp->isp; 627 dp = &sbs->dmaps[isp_handle_index(rq->req_handle)]; 628 nxti = *mp->nxtip; 629 630 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 631 bus_dmamap_sync(sbs->dmat, *dp, BUS_DMASYNC_PREREAD); 632 } else { 633 bus_dmamap_sync(sbs->dmat, *dp, BUS_DMASYNC_PREWRITE); 634 } 635 636 datalen = XS_XFRLEN(csio); 637 638 /* 639 * We're passed an initial partially filled in entry that 640 * has most fields filled in except for data transfer 641 * related values. 642 * 643 * Our job is to fill in the initial request queue entry and 644 * then to start allocating and filling in continuation entries 645 * until we've covered the entire transfer. 646 */ 647 648 if (csio->cdb_len > 12) { 649 seglim = 0; 650 } else { 651 seglim = ISP_RQDSEG; 652 } 653 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 654 rq->req_flags |= REQFLAG_DATA_IN; 655 } else { 656 rq->req_flags |= REQFLAG_DATA_OUT; 657 } 658 659 eseg = dm_segs + nseg; 660 661 while (datalen != 0 && rq->req_seg_count < seglim && dm_segs != eseg) { 662 rq->req_dataseg[rq->req_seg_count].ds_base = dm_segs->ds_addr; 663 rq->req_dataseg[rq->req_seg_count].ds_count = dm_segs->ds_len; 664 datalen -= dm_segs->ds_len; 665 rq->req_seg_count++; 666 dm_segs++; 667 } 668 669 while (datalen > 0 && dm_segs != eseg) { 670 u_int16_t onxti; 671 ispcontreq_t local, *crq = &local, *cqe; 672 673 cqe = (ispcontreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, nxti); 674 onxti = nxti; 675 nxti = ISP_NXT_QENTRY(onxti, RQUEST_QUEUE_LEN(isp)); 676 if (nxti == mp->optr) { 677 isp_prt(isp, ISP_LOGDEBUG0, "Request Queue Overflow++"); 678 mp->error = MUSHERR_NOQENTRIES; 679 return; 680 } 681 rq->req_header.rqs_entry_count++; 682 MEMZERO((void *)crq, sizeof (*crq)); 683 crq->req_header.rqs_entry_count = 1; 684 crq->req_header.rqs_entry_type = RQSTYPE_DATASEG; 685 686 seglim = 0; 687 while (datalen > 0 && seglim < ISP_CDSEG && dm_segs != eseg) { 688 crq->req_dataseg[seglim].ds_base = 689 dm_segs->ds_addr; 690 crq->req_dataseg[seglim].ds_count = 691 dm_segs->ds_len; 692 rq->req_seg_count++; 693 dm_segs++; 694 seglim++; 695 datalen -= dm_segs->ds_len; 696 } 697 isp_put_cont_req(isp, crq, cqe); 698 MEMORYBARRIER(isp, SYNC_REQUEST, onxti, QENTRY_LEN); 699 } 700 *mp->nxtip = nxti; 701} 702 703static int 704isp_sbus_dmasetup(struct ispsoftc *isp, struct ccb_scsiio *csio, ispreq_t *rq, 705 u_int16_t *nxtip, u_int16_t optr) 706{ 707 struct isp_sbussoftc *sbs = (struct isp_sbussoftc *)isp; 708 ispreq_t *qep; 709 bus_dmamap_t *dp = NULL; 710 mush_t mush, *mp; 711 void (*eptr)(void *, bus_dma_segment_t *, int, int); 712 713 qep = (ispreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, isp->isp_reqidx); 714 eptr = dma2; 715 716 717 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_NONE || 718 (csio->dxfer_len == 0)) { 719 rq->req_seg_count = 1; 720 goto mbxsync; 721 } 722 723 /* 724 * Do a virtual grapevine step to collect info for 725 * the callback dma allocation that we have to use... 726 */ 727 mp = &mush; 728 mp->isp = isp; 729 mp->cmd_token = csio; 730 mp->rq = rq; 731 mp->nxtip = nxtip; 732 mp->optr = optr; 733 mp->error = 0; 734 735 if ((csio->ccb_h.flags & CAM_SCATTER_VALID) == 0) { 736 if ((csio->ccb_h.flags & CAM_DATA_PHYS) == 0) { 737 int error, s; 738 dp = &sbs->dmaps[isp_handle_index(rq->req_handle)]; 739 s = splsoftvm(); 740 error = bus_dmamap_load(sbs->dmat, *dp, 741 csio->data_ptr, csio->dxfer_len, eptr, mp, 0); 742 if (error == EINPROGRESS) { 743 bus_dmamap_unload(sbs->dmat, *dp); 744 mp->error = EINVAL; 745 isp_prt(isp, ISP_LOGERR, 746 "deferred dma allocation not supported"); 747 } else if (error && mp->error == 0) { 748#ifdef DIAGNOSTIC 749 isp_prt(isp, ISP_LOGERR, 750 "error %d in dma mapping code", error); 751#endif 752 mp->error = error; 753 } 754 splx(s); 755 } else { 756 /* Pointer to physical buffer */ 757 struct bus_dma_segment seg; 758 seg.ds_addr = (bus_addr_t)csio->data_ptr; 759 seg.ds_len = csio->dxfer_len; 760 (*eptr)(mp, &seg, 1, 0); 761 } 762 } else { 763 struct bus_dma_segment *segs; 764 765 if ((csio->ccb_h.flags & CAM_DATA_PHYS) != 0) { 766 isp_prt(isp, ISP_LOGERR, 767 "Physical segment pointers unsupported"); 768 mp->error = EINVAL; 769 } else if ((csio->ccb_h.flags & CAM_SG_LIST_PHYS) == 0) { 770 isp_prt(isp, ISP_LOGERR, 771 "Virtual segment addresses unsupported"); 772 mp->error = EINVAL; 773 } else { 774 /* Just use the segments provided */ 775 segs = (struct bus_dma_segment *) csio->data_ptr; 776 (*eptr)(mp, segs, csio->sglist_cnt, 0); 777 } 778 } 779 if (mp->error) { 780 int retval = CMD_COMPLETE; 781 if (mp->error == MUSHERR_NOQENTRIES) { 782 retval = CMD_EAGAIN; 783 } else if (mp->error == EFBIG) { 784 XS_SETERR(csio, CAM_REQ_TOO_BIG); 785 } else if (mp->error == EINVAL) { 786 XS_SETERR(csio, CAM_REQ_INVALID); 787 } else { 788 XS_SETERR(csio, CAM_UNREC_HBA_ERROR); 789 } 790 return (retval); 791 } 792mbxsync: 793 switch (rq->req_header.rqs_entry_type) { 794 case RQSTYPE_REQUEST: 795 isp_put_request(isp, rq, qep); 796 break; 797 case RQSTYPE_CMDONLY: 798 isp_put_extended_request(isp, (ispextreq_t *)rq, 799 (ispextreq_t *)qep); 800 break; 801 } 802 return (CMD_QUEUED); 803} 804 805static void 806isp_sbus_dmateardown(struct ispsoftc *isp, XS_T *xs, u_int16_t handle) 807{ 808 struct isp_sbussoftc *sbs = (struct isp_sbussoftc *)isp; 809 bus_dmamap_t *dp = &sbs->dmaps[isp_handle_index(handle)]; 810 if ((xs->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 811 bus_dmamap_sync(sbs->dmat, *dp, BUS_DMASYNC_POSTREAD); 812 } else { 813 bus_dmamap_sync(sbs->dmat, *dp, BUS_DMASYNC_POSTWRITE); 814 } 815 bus_dmamap_unload(sbs->dmat, *dp); 816} 817 818 819static void 820isp_sbus_reset1(struct ispsoftc *isp) 821{ 822 /* enable interrupts */ 823 ENABLE_INTS(isp); 824} 825 826static void 827isp_sbus_dumpregs(struct ispsoftc *isp, const char *msg) 828{ 829 if (msg) 830 printf("%s: %s\n", device_get_nameunit(isp->isp_dev), msg); 831 else 832 printf("%s:\n", device_get_nameunit(isp->isp_dev)); 833 printf(" biu_conf1=%x", ISP_READ(isp, BIU_CONF1)); 834 printf(" biu_icr=%x biu_isr=%x biu_sema=%x ", ISP_READ(isp, BIU_ICR), 835 ISP_READ(isp, BIU_ISR), ISP_READ(isp, BIU_SEMA)); 836 printf("risc_hccr=%x\n", ISP_READ(isp, HCCR)); 837 838 839 ISP_WRITE(isp, HCCR, HCCR_CMD_PAUSE); 840 printf(" cdma_conf=%x cdma_sts=%x cdma_fifostat=%x\n", 841 ISP_READ(isp, CDMA_CONF), ISP_READ(isp, CDMA_STATUS), 842 ISP_READ(isp, CDMA_FIFO_STS)); 843 printf(" ddma_conf=%x ddma_sts=%x ddma_fifostat=%x\n", 844 ISP_READ(isp, DDMA_CONF), ISP_READ(isp, DDMA_STATUS), 845 ISP_READ(isp, DDMA_FIFO_STS)); 846 printf(" sxp_int=%x sxp_gross=%x sxp(scsi_ctrl)=%x\n", 847 ISP_READ(isp, SXP_INTERRUPT), 848 ISP_READ(isp, SXP_GROSS_ERR), 849 ISP_READ(isp, SXP_PINS_CTRL)); 850 ISP_WRITE(isp, HCCR, HCCR_CMD_RELEASE); 851 printf(" mbox regs: %x %x %x %x %x\n", 852 ISP_READ(isp, OUTMAILBOX0), ISP_READ(isp, OUTMAILBOX1), 853 ISP_READ(isp, OUTMAILBOX2), ISP_READ(isp, OUTMAILBOX3), 854 ISP_READ(isp, OUTMAILBOX4)); 855} 856