isp_sbus.c revision 165269
1/*- 2 * Copyright (c) 1997-2006 by Matthew Jacob 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice immediately at the beginning of the file, without modification, 10 * this list of conditions, and the following disclaimer. 11 * 2. The name of the author may not be used to endorse or promote products 12 * derived from this software without specific prior written permission. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 18 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26/* 27 * SBus specific probe and attach routines for Qlogic ISP SCSI adapters. 28 * FreeBSD Version. 29 */ 30 31#include <sys/cdefs.h> 32__FBSDID("$FreeBSD: head/sys/dev/isp/isp_sbus.c 165269 2006-12-16 05:54:29Z mjacob $"); 33 34#include <sys/param.h> 35#include <sys/systm.h> 36#if __FreeBSD_version >= 700000 37#include <sys/linker.h> 38#include <sys/firmware.h> 39#endif 40#include <sys/bus.h> 41#include <sys/kernel.h> 42#include <sys/module.h> 43#include <sys/resource.h> 44 45#include <dev/ofw/ofw_bus.h> 46 47#include <machine/bus.h> 48#include <machine/resource.h> 49#include <sys/rman.h> 50#include <sparc64/sbus/sbusvar.h> 51 52#include <dev/isp/isp_freebsd.h> 53 54static uint32_t 55isp_sbus_rd_reg(ispsoftc_t *, int); 56static void 57isp_sbus_wr_reg(ispsoftc_t *, int, uint32_t); 58static int 59isp_sbus_rd_isr(ispsoftc_t *, uint32_t *, uint16_t *, uint16_t *); 60static int isp_sbus_mbxdma(ispsoftc_t *); 61static int 62isp_sbus_dmasetup(ispsoftc_t *, XS_T *, ispreq_t *, uint32_t *, uint32_t); 63static void 64isp_sbus_dmateardown(ispsoftc_t *, XS_T *, uint32_t); 65 66static void isp_sbus_reset0(ispsoftc_t *); 67static void isp_sbus_reset1(ispsoftc_t *); 68static void isp_sbus_dumpregs(ispsoftc_t *, const char *); 69 70static struct ispmdvec mdvec = { 71 isp_sbus_rd_isr, 72 isp_sbus_rd_reg, 73 isp_sbus_wr_reg, 74 isp_sbus_mbxdma, 75 isp_sbus_dmasetup, 76 isp_sbus_dmateardown, 77 isp_sbus_reset0, 78 isp_sbus_reset1, 79 isp_sbus_dumpregs, 80 NULL, 81 BIU_BURST_ENABLE|BIU_PCI_CONF1_FIFO_64 82}; 83 84static int isp_sbus_probe (device_t); 85static int isp_sbus_attach (device_t); 86 87 88struct isp_sbussoftc { 89 ispsoftc_t sbus_isp; 90 device_t sbus_dev; 91 struct resource * sbus_reg; 92 bus_space_tag_t sbus_st; 93 bus_space_handle_t sbus_sh; 94 void * ih; 95 int16_t sbus_poff[_NREG_BLKS]; 96 bus_dma_tag_t dmat; 97 bus_dmamap_t *dmaps; 98 sdparam sbus_param; 99 struct ispmdvec sbus_mdvec; 100 struct resource * sbus_ires; 101}; 102 103 104static device_method_t isp_sbus_methods[] = { 105 /* Device interface */ 106 DEVMETHOD(device_probe, isp_sbus_probe), 107 DEVMETHOD(device_attach, isp_sbus_attach), 108 { 0, 0 } 109}; 110static void isp_sbus_intr(void *); 111 112static driver_t isp_sbus_driver = { 113 "isp", isp_sbus_methods, sizeof (struct isp_sbussoftc) 114}; 115static devclass_t isp_devclass; 116DRIVER_MODULE(isp, sbus, isp_sbus_driver, isp_devclass, 0, 0); 117#if __FreeBSD_version < 700000 118extern ispfwfunc *isp_get_firmware_p; 119#endif 120 121static int 122isp_sbus_probe(device_t dev) 123{ 124 int found = 0; 125 const char *name = ofw_bus_get_name(dev); 126 if (strcmp(name, "SUNW,isp") == 0 || 127 strcmp(name, "QLGC,isp") == 0 || 128 strcmp(name, "ptisp") == 0 || 129 strcmp(name, "PTI,ptisp") == 0) { 130 found++; 131 } 132 if (!found) 133 return (ENXIO); 134 135 if (isp_announced == 0 && bootverbose) { 136 printf("Qlogic ISP Driver, FreeBSD Version %d.%d, " 137 "Core Version %d.%d\n", 138 ISP_PLATFORM_VERSION_MAJOR, ISP_PLATFORM_VERSION_MINOR, 139 ISP_CORE_VERSION_MAJOR, ISP_CORE_VERSION_MINOR); 140 isp_announced++; 141 } 142 return (0); 143} 144 145static int 146isp_sbus_attach(device_t dev) 147{ 148 struct resource *regs; 149 int tval, iqd, isp_debug, role, rid, ispburst; 150 struct isp_sbussoftc *sbs; 151 ispsoftc_t *isp = NULL; 152 int locksetup = 0; 153 int ints_setup = 0; 154 155 /* 156 * Figure out if we're supposed to skip this one. 157 * If we are, we actually go to ISP_ROLE_NONE. 158 */ 159 160 tval = 0; 161 if (resource_int_value(device_get_name(dev), device_get_unit(dev), 162 "disable", &tval) == 0 && tval) { 163 device_printf(dev, "device is disabled\n"); 164 /* but return 0 so the !$)$)*!$*) unit isn't reused */ 165 return (0); 166 } 167 168 role = 0; 169 if (resource_int_value(device_get_name(dev), device_get_unit(dev), 170 "role", &role) == 0 && 171 ((role & ~(ISP_ROLE_INITIATOR|ISP_ROLE_TARGET)) == 0)) { 172 device_printf(dev, "setting role to 0x%x\n", role); 173 } else { 174#ifdef ISP_TARGET_MODE 175 role = ISP_ROLE_INITIATOR|ISP_ROLE_TARGET; 176#else 177 role = ISP_DEFAULT_ROLES; 178#endif 179 } 180 181 sbs = malloc(sizeof (*sbs), M_DEVBUF, M_NOWAIT | M_ZERO); 182 if (sbs == NULL) { 183 device_printf(dev, "cannot allocate softc\n"); 184 return (ENOMEM); 185 } 186 187 regs = NULL; 188 iqd = 0; 189 rid = 0; 190 regs = 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 * We don't trust NVRAM on SBus cards 247 */ 248 isp->isp_confopts |= ISP_CFG_NONVRAM; 249 250 /* 251 * Mark things if we're a PTI SBus adapter. 252 */ 253 if (strcmp("PTI,ptisp", ofw_bus_get_name(dev)) == 0 || 254 strcmp("ptisp", ofw_bus_get_name(dev)) == 0) { 255 SDPARAM(isp)->isp_ptisp = 1; 256 } 257 258 259#if __FreeBSD_version >= 700000 260 isp->isp_osinfo.fw = firmware_get("isp_1000"); 261 if (isp->isp_osinfo.fw) { 262 union { 263 const void *cp; 264 uint16_t *sp; 265 } stupid; 266 stupid.cp = isp->isp_osinfo.fw->data; 267 isp->isp_mdvec->dv_ispfw = stupid.sp; 268 } 269#else 270 /* 271 * Try and find firmware for this device. 272 */ 273 if (isp_get_firmware_p) { 274 (*isp_get_firmware_p)(0, 0, 0x1000, &sbs->sbus_mdvec.dv_ispfw); 275 } 276#endif 277 278 tval = 0; 279 if (resource_int_value(device_get_name(dev), device_get_unit(dev), 280 "fwload_disable", &tval) == 0 && tval != 0) { 281 isp->isp_confopts |= ISP_CFG_NORELOAD; 282 } 283 284 isp->isp_osinfo.default_id = -1; 285 if (resource_int_value(device_get_name(dev), device_get_unit(dev), 286 "iid", &tval) == 0) { 287 isp->isp_osinfo.default_id = tval; 288 isp->isp_confopts |= ISP_CFG_OWNLOOPID; 289 } 290 if (isp->isp_osinfo.default_id == -1) { 291 /* 292 * XXX: should be a way to get properties w/o having 293 * XXX: to call OF_xxx functions 294 */ 295 isp->isp_osinfo.default_id = 7; 296 } 297 298 isp_debug = 0; 299 (void) resource_int_value(device_get_name(dev), device_get_unit(dev), 300 "debug", &isp_debug); 301 302 /* Make sure the lock is set up. */ 303 mtx_init(&isp->isp_osinfo.lock, "isp", NULL, MTX_DEF); 304 locksetup++; 305 306 iqd = 0; 307 sbs->sbus_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ, &iqd, 308 RF_ACTIVE | RF_SHAREABLE); 309 if (sbs->sbus_ires == NULL) { 310 device_printf(dev, "could not allocate interrupt\n"); 311 goto bad; 312 } 313 314 if (bus_setup_intr(dev, sbs->sbus_ires, ISP_IFLAGS, 315 isp_sbus_intr, isp, &sbs->ih)) { 316 device_printf(dev, "could not setup interrupt\n"); 317 goto bad; 318 } 319 ints_setup++; 320 321 /* 322 * Set up logging levels. 323 */ 324 if (isp_debug) { 325 isp->isp_dblev = isp_debug; 326 } else { 327 isp->isp_dblev = ISP_LOGWARN|ISP_LOGERR; 328 } 329 if (bootverbose) { 330 isp->isp_dblev |= ISP_LOGCONFIG|ISP_LOGINFO; 331 } 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_uninit(isp); 340 ISP_UNLOCK(isp); 341 goto bad; 342 } 343 isp_init(isp); 344 if (isp->isp_role != ISP_ROLE_NONE && isp->isp_state != ISP_INITSTATE) { 345 isp_uninit(isp); 346 ISP_UNLOCK(isp); 347 goto bad; 348 } 349 isp_attach(isp); 350 if (isp->isp_role != ISP_ROLE_NONE && isp->isp_state != ISP_RUNSTATE) { 351 isp_uninit(isp); 352 ISP_UNLOCK(isp); 353 goto bad; 354 } 355 ISP_UNLOCK(isp); 356 return (0); 357 358bad: 359 360 if (sbs && ints_setup) { 361 (void) bus_teardown_intr(dev, sbs->sbus_ires, sbs->ih); 362 } 363 364 if (sbs && sbs->sbus_ires) { 365 bus_release_resource(dev, SYS_RES_IRQ, iqd, sbs->sbus_ires); 366 } 367 368 if (locksetup && isp) { 369 mtx_destroy(&isp->isp_osinfo.lock); 370 } 371 372 if (regs) { 373 (void) bus_release_resource(dev, 0, 0, regs); 374 } 375 376 if (sbs) { 377 if (sbs->sbus_isp.isp_param) { 378 free(sbs->sbus_isp.isp_param, M_DEVBUF); 379 } 380 free(sbs, M_DEVBUF); 381 } 382 return (ENXIO); 383} 384 385static void 386isp_sbus_intr(void *arg) 387{ 388 ispsoftc_t *isp = arg; 389 uint32_t isr; 390 uint16_t sema, mbox; 391 392 ISP_LOCK(isp); 393 isp->isp_intcnt++; 394 if (ISP_READ_ISR(isp, &isr, &sema, &mbox) == 0) { 395 isp->isp_intbogus++; 396 } else { 397 isp_intr(isp, isr, sema, mbox); 398 } 399 ISP_UNLOCK(isp); 400} 401 402#define IspVirt2Off(a, x) \ 403 (((struct isp_sbussoftc *)a)->sbus_poff[((x) & _BLK_REG_MASK) >> \ 404 _BLK_REG_SHFT] + ((x) & 0xff)) 405 406#define BXR2(sbc, off) \ 407 bus_space_read_2(sbc->sbus_st, sbc->sbus_sh, off) 408 409static int 410isp_sbus_rd_isr(ispsoftc_t *isp, uint32_t *isrp, uint16_t *semap, uint16_t *mbp) 411{ 412 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 413 uint16_t isr, sema; 414 415 isr = BXR2(sbc, IspVirt2Off(isp, BIU_ISR)); 416 sema = BXR2(sbc, IspVirt2Off(isp, BIU_SEMA)); 417 isp_prt(isp, ISP_LOGDEBUG3, "ISR 0x%x SEMA 0x%x", isr, sema); 418 isr &= INT_PENDING_MASK(isp); 419 sema &= BIU_SEMA_LOCK; 420 if (isr == 0 && sema == 0) { 421 return (0); 422 } 423 *isrp = isr; 424 if ((*semap = sema) != 0) { 425 *mbp = BXR2(sbc, IspVirt2Off(isp, OUTMAILBOX0)); 426 } 427 return (1); 428} 429 430static uint32_t 431isp_sbus_rd_reg(ispsoftc_t *isp, int regoff) 432{ 433 uint16_t rval; 434 struct isp_sbussoftc *sbs = (struct isp_sbussoftc *) isp; 435 int offset = sbs->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 436 offset += (regoff & 0xff); 437 rval = bus_space_read_2(sbs->sbus_st, sbs->sbus_sh, offset); 438 isp_prt(isp, ISP_LOGDEBUG3, 439 "isp_sbus_rd_reg(off %x) = %x", regoff, rval); 440 return (rval); 441} 442 443static void 444isp_sbus_wr_reg(ispsoftc_t *isp, int regoff, uint32_t val) 445{ 446 struct isp_sbussoftc *sbs = (struct isp_sbussoftc *) isp; 447 int offset = sbs->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 448 offset += (regoff & 0xff); 449 isp_prt(isp, ISP_LOGDEBUG3, 450 "isp_sbus_wr_reg(off %x) = %x", regoff, val); 451 bus_space_write_2(sbs->sbus_st, sbs->sbus_sh, offset, val); 452} 453 454struct imush { 455 ispsoftc_t *isp; 456 int error; 457}; 458 459static void imc(void *, bus_dma_segment_t *, int, int); 460 461static void 462imc(void *arg, bus_dma_segment_t *segs, int nseg, int error) 463{ 464 struct imush *imushp = (struct imush *) arg; 465 if (error) { 466 imushp->error = error; 467 } else { 468 ispsoftc_t *isp =imushp->isp; 469 bus_addr_t addr = segs->ds_addr; 470 471 isp->isp_rquest_dma = addr; 472 addr += ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); 473 isp->isp_result_dma = addr; 474 } 475} 476 477/* 478 * Should be BUS_SPACE_MAXSIZE, but MAXPHYS is larger than BUS_SPACE_MAXSIZE 479 */ 480#define ISP_NSEGS ((MAXPHYS / PAGE_SIZE) + 1) 481 482static int 483isp_sbus_mbxdma(ispsoftc_t *isp) 484{ 485 struct isp_sbussoftc *sbs = (struct isp_sbussoftc *)isp; 486 caddr_t base; 487 uint32_t len; 488 int i, error, ns; 489 struct imush im; 490 491 /* 492 * Already been here? If so, leave... 493 */ 494 if (isp->isp_rquest) { 495 return (0); 496 } 497 498 ISP_UNLOCK(isp); 499 500 if (bus_dma_tag_create(NULL, 1, BUS_SPACE_MAXADDR_24BIT+1, 501 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR_32BIT, 502 NULL, NULL, BUS_SPACE_MAXSIZE_32BIT, ISP_NSEGS, 503 BUS_SPACE_MAXADDR_24BIT, 0, busdma_lock_mutex, &Giant, 504 &sbs->dmat)) { 505 isp_prt(isp, ISP_LOGERR, "could not create master dma tag"); 506 ISP_LOCK(isp); 507 return(1); 508 } 509 510 len = sizeof (XS_T **) * isp->isp_maxcmds; 511 isp->isp_xflist = (XS_T **) malloc(len, M_DEVBUF, M_WAITOK | M_ZERO); 512 if (isp->isp_xflist == NULL) { 513 isp_prt(isp, ISP_LOGERR, "cannot alloc xflist array"); 514 ISP_LOCK(isp); 515 return (1); 516 } 517 len = sizeof (bus_dmamap_t) * isp->isp_maxcmds; 518 sbs->dmaps = (bus_dmamap_t *) malloc(len, M_DEVBUF, M_WAITOK); 519 if (sbs->dmaps == NULL) { 520 isp_prt(isp, ISP_LOGERR, "can't alloc dma map storage"); 521 free(isp->isp_xflist, M_DEVBUF); 522 ISP_LOCK(isp); 523 return (1); 524 } 525 526 /* 527 * Allocate and map the request, result queues, plus FC scratch area. 528 */ 529 len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); 530 len += ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp)); 531 532 ns = (len / PAGE_SIZE) + 1; 533 if (bus_dma_tag_create(sbs->dmat, QENTRY_LEN, BUS_SPACE_MAXADDR_24BIT+1, 534 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR_32BIT, NULL, NULL, 535 len, ns, BUS_SPACE_MAXADDR_24BIT, 0, busdma_lock_mutex, &Giant, 536 &isp->isp_cdmat)) { 537 isp_prt(isp, ISP_LOGERR, 538 "cannot create a dma tag for control spaces"); 539 free(sbs->dmaps, M_DEVBUF); 540 free(isp->isp_xflist, M_DEVBUF); 541 ISP_LOCK(isp); 542 return (1); 543 } 544 545 if (bus_dmamem_alloc(isp->isp_cdmat, (void **)&base, BUS_DMA_NOWAIT, 546 &isp->isp_cdmap) != 0) { 547 isp_prt(isp, ISP_LOGERR, 548 "cannot allocate %d bytes of CCB memory", len); 549 bus_dma_tag_destroy(isp->isp_cdmat); 550 free(isp->isp_xflist, M_DEVBUF); 551 free(sbs->dmaps, M_DEVBUF); 552 ISP_LOCK(isp); 553 return (1); 554 } 555 556 for (i = 0; i < isp->isp_maxcmds; i++) { 557 error = bus_dmamap_create(sbs->dmat, 0, &sbs->dmaps[i]); 558 if (error) { 559 isp_prt(isp, ISP_LOGERR, 560 "error %d creating per-cmd DMA maps", error); 561 while (--i >= 0) { 562 bus_dmamap_destroy(sbs->dmat, sbs->dmaps[i]); 563 } 564 goto bad; 565 } 566 } 567 568 im.isp = isp; 569 im.error = 0; 570 bus_dmamap_load(isp->isp_cdmat, isp->isp_cdmap, base, len, imc, &im, 0); 571 if (im.error) { 572 isp_prt(isp, ISP_LOGERR, 573 "error %d loading dma map for control areas", im.error); 574 goto bad; 575 } 576 577 isp->isp_rquest = base; 578 base += ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); 579 ISP_LOCK(isp); 580 isp->isp_result = base; 581 return (0); 582 583bad: 584 bus_dmamem_free(isp->isp_cdmat, base, isp->isp_cdmap); 585 bus_dma_tag_destroy(isp->isp_cdmat); 586 free(isp->isp_xflist, M_DEVBUF); 587 free(sbs->dmaps, M_DEVBUF); 588 ISP_LOCK(isp); 589 isp->isp_rquest = NULL; 590 return (1); 591} 592 593typedef struct { 594 ispsoftc_t *isp; 595 void *cmd_token; 596 void *rq; 597 uint32_t *nxtip; 598 uint32_t optr; 599 int error; 600} mush_t; 601 602#define MUSHERR_NOQENTRIES -2 603 604 605static void dma2(void *, bus_dma_segment_t *, int, int); 606 607static void 608dma2(void *arg, bus_dma_segment_t *dm_segs, int nseg, int error) 609{ 610 mush_t *mp; 611 ispsoftc_t *isp; 612 struct ccb_scsiio *csio; 613 struct isp_sbussoftc *sbs; 614 bus_dmamap_t *dp; 615 bus_dma_segment_t *eseg; 616 ispreq_t *rq; 617 int seglim, datalen; 618 uint16_t nxti; 619 620 mp = (mush_t *) arg; 621 if (error) { 622 mp->error = error; 623 return; 624 } 625 626 if (nseg < 1) { 627 isp_prt(mp->isp, ISP_LOGERR, "bad segment count (%d)", nseg); 628 mp->error = EFAULT; 629 return; 630 } 631 csio = mp->cmd_token; 632 isp = mp->isp; 633 rq = mp->rq; 634 sbs = (struct isp_sbussoftc *)mp->isp; 635 dp = &sbs->dmaps[isp_handle_index(rq->req_handle)]; 636 nxti = *mp->nxtip; 637 638 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 639 bus_dmamap_sync(sbs->dmat, *dp, BUS_DMASYNC_PREREAD); 640 } else { 641 bus_dmamap_sync(sbs->dmat, *dp, BUS_DMASYNC_PREWRITE); 642 } 643 644 datalen = XS_XFRLEN(csio); 645 646 /* 647 * We're passed an initial partially filled in entry that 648 * has most fields filled in except for data transfer 649 * related values. 650 * 651 * Our job is to fill in the initial request queue entry and 652 * then to start allocating and filling in continuation entries 653 * until we've covered the entire transfer. 654 */ 655 656 if (csio->cdb_len > 12) { 657 seglim = 0; 658 } else { 659 seglim = ISP_RQDSEG; 660 } 661 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 662 rq->req_flags |= REQFLAG_DATA_IN; 663 } else { 664 rq->req_flags |= REQFLAG_DATA_OUT; 665 } 666 667 eseg = dm_segs + nseg; 668 669 while (datalen != 0 && rq->req_seg_count < seglim && dm_segs != eseg) { 670 rq->req_dataseg[rq->req_seg_count].ds_base = dm_segs->ds_addr; 671 rq->req_dataseg[rq->req_seg_count].ds_count = dm_segs->ds_len; 672 datalen -= dm_segs->ds_len; 673 rq->req_seg_count++; 674 dm_segs++; 675 } 676 677 while (datalen > 0 && dm_segs != eseg) { 678 uint16_t onxti; 679 ispcontreq_t local, *crq = &local, *cqe; 680 681 cqe = (ispcontreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, nxti); 682 onxti = nxti; 683 nxti = ISP_NXT_QENTRY(onxti, RQUEST_QUEUE_LEN(isp)); 684 if (nxti == mp->optr) { 685 isp_prt(isp, ISP_LOGDEBUG0, "Request Queue Overflow++"); 686 mp->error = MUSHERR_NOQENTRIES; 687 return; 688 } 689 rq->req_header.rqs_entry_count++; 690 MEMZERO((void *)crq, sizeof (*crq)); 691 crq->req_header.rqs_entry_count = 1; 692 crq->req_header.rqs_entry_type = RQSTYPE_DATASEG; 693 694 seglim = 0; 695 while (datalen > 0 && seglim < ISP_CDSEG && dm_segs != eseg) { 696 crq->req_dataseg[seglim].ds_base = 697 dm_segs->ds_addr; 698 crq->req_dataseg[seglim].ds_count = 699 dm_segs->ds_len; 700 rq->req_seg_count++; 701 dm_segs++; 702 seglim++; 703 datalen -= dm_segs->ds_len; 704 } 705 isp_put_cont_req(isp, crq, cqe); 706 MEMORYBARRIER(isp, SYNC_REQUEST, onxti, QENTRY_LEN); 707 } 708 *mp->nxtip = nxti; 709} 710 711static int 712isp_sbus_dmasetup(ispsoftc_t *isp, struct ccb_scsiio *csio, ispreq_t *rq, 713 uint32_t *nxtip, uint32_t optr) 714{ 715 struct isp_sbussoftc *sbs = (struct isp_sbussoftc *)isp; 716 ispreq_t *qep; 717 bus_dmamap_t *dp = NULL; 718 mush_t mush, *mp; 719 void (*eptr)(void *, bus_dma_segment_t *, int, int); 720 721 qep = (ispreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, isp->isp_reqidx); 722 eptr = dma2; 723 724 725 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_NONE || 726 (csio->dxfer_len == 0)) { 727 rq->req_seg_count = 1; 728 goto mbxsync; 729 } 730 731 /* 732 * Do a virtual grapevine step to collect info for 733 * the callback dma allocation that we have to use... 734 */ 735 mp = &mush; 736 mp->isp = isp; 737 mp->cmd_token = csio; 738 mp->rq = rq; 739 mp->nxtip = nxtip; 740 mp->optr = optr; 741 mp->error = 0; 742 743 if ((csio->ccb_h.flags & CAM_SCATTER_VALID) == 0) { 744 if ((csio->ccb_h.flags & CAM_DATA_PHYS) == 0) { 745 int error, s; 746 dp = &sbs->dmaps[isp_handle_index(rq->req_handle)]; 747 s = splsoftvm(); 748 error = bus_dmamap_load(sbs->dmat, *dp, 749 csio->data_ptr, csio->dxfer_len, eptr, mp, 0); 750 if (error == EINPROGRESS) { 751 bus_dmamap_unload(sbs->dmat, *dp); 752 mp->error = EINVAL; 753 isp_prt(isp, ISP_LOGERR, 754 "deferred dma allocation not supported"); 755 } else if (error && mp->error == 0) { 756#ifdef DIAGNOSTIC 757 isp_prt(isp, ISP_LOGERR, 758 "error %d in dma mapping code", error); 759#endif 760 mp->error = error; 761 } 762 splx(s); 763 } else { 764 /* Pointer to physical buffer */ 765 struct bus_dma_segment seg; 766 seg.ds_addr = (bus_addr_t)csio->data_ptr; 767 seg.ds_len = csio->dxfer_len; 768 (*eptr)(mp, &seg, 1, 0); 769 } 770 } else { 771 struct bus_dma_segment *segs; 772 773 if ((csio->ccb_h.flags & CAM_DATA_PHYS) != 0) { 774 isp_prt(isp, ISP_LOGERR, 775 "Physical segment pointers unsupported"); 776 mp->error = EINVAL; 777 } else if ((csio->ccb_h.flags & CAM_SG_LIST_PHYS) == 0) { 778 isp_prt(isp, ISP_LOGERR, 779 "Virtual segment addresses unsupported"); 780 mp->error = EINVAL; 781 } else { 782 /* Just use the segments provided */ 783 segs = (struct bus_dma_segment *) csio->data_ptr; 784 (*eptr)(mp, segs, csio->sglist_cnt, 0); 785 } 786 } 787 if (mp->error) { 788 int retval = CMD_COMPLETE; 789 if (mp->error == MUSHERR_NOQENTRIES) { 790 retval = CMD_EAGAIN; 791 } else if (mp->error == EFBIG) { 792 XS_SETERR(csio, CAM_REQ_TOO_BIG); 793 } else if (mp->error == EINVAL) { 794 XS_SETERR(csio, CAM_REQ_INVALID); 795 } else { 796 XS_SETERR(csio, CAM_UNREC_HBA_ERROR); 797 } 798 return (retval); 799 } 800mbxsync: 801 if (isp->isp_dblev & ISP_LOGDEBUG1) { 802 isp_print_bytes(isp, "Request Queue Entry", QENTRY_LEN, rq); 803 } 804 switch (rq->req_header.rqs_entry_type) { 805 case RQSTYPE_REQUEST: 806 isp_put_request(isp, rq, qep); 807 break; 808 case RQSTYPE_CMDONLY: 809 isp_put_extended_request(isp, (ispextreq_t *)rq, 810 (ispextreq_t *)qep); 811 break; 812 } 813 return (CMD_QUEUED); 814} 815 816static void 817isp_sbus_dmateardown(ispsoftc_t *isp, XS_T *xs, uint32_t handle) 818{ 819 struct isp_sbussoftc *sbs = (struct isp_sbussoftc *)isp; 820 bus_dmamap_t *dp = &sbs->dmaps[isp_handle_index(handle)]; 821 if ((xs->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 822 bus_dmamap_sync(sbs->dmat, *dp, BUS_DMASYNC_POSTREAD); 823 } else { 824 bus_dmamap_sync(sbs->dmat, *dp, BUS_DMASYNC_POSTWRITE); 825 } 826 bus_dmamap_unload(sbs->dmat, *dp); 827} 828 829static void 830isp_sbus_reset0(ispsoftc_t *isp) 831{ 832 ISP_DISABLE_INTS(isp); 833} 834 835static void 836isp_sbus_reset1(ispsoftc_t *isp) 837{ 838 ISP_ENABLE_INTS(isp); 839} 840 841static void 842isp_sbus_dumpregs(ispsoftc_t *isp, const char *msg) 843{ 844 if (msg) 845 printf("%s: %s\n", device_get_nameunit(isp->isp_dev), msg); 846 else 847 printf("%s:\n", device_get_nameunit(isp->isp_dev)); 848 printf(" biu_conf1=%x", ISP_READ(isp, BIU_CONF1)); 849 printf(" biu_icr=%x biu_isr=%x biu_sema=%x ", ISP_READ(isp, BIU_ICR), 850 ISP_READ(isp, BIU_ISR), ISP_READ(isp, BIU_SEMA)); 851 printf("risc_hccr=%x\n", ISP_READ(isp, HCCR)); 852 853 854 ISP_WRITE(isp, HCCR, HCCR_CMD_PAUSE); 855 printf(" cdma_conf=%x cdma_sts=%x cdma_fifostat=%x\n", 856 ISP_READ(isp, CDMA_CONF), ISP_READ(isp, CDMA_STATUS), 857 ISP_READ(isp, CDMA_FIFO_STS)); 858 printf(" ddma_conf=%x ddma_sts=%x ddma_fifostat=%x\n", 859 ISP_READ(isp, DDMA_CONF), ISP_READ(isp, DDMA_STATUS), 860 ISP_READ(isp, DDMA_FIFO_STS)); 861 printf(" sxp_int=%x sxp_gross=%x sxp(scsi_ctrl)=%x\n", 862 ISP_READ(isp, SXP_INTERRUPT), 863 ISP_READ(isp, SXP_GROSS_ERR), 864 ISP_READ(isp, SXP_PINS_CTRL)); 865 ISP_WRITE(isp, HCCR, HCCR_CMD_RELEASE); 866 printf(" mbox regs: %x %x %x %x %x\n", 867 ISP_READ(isp, OUTMAILBOX0), ISP_READ(isp, OUTMAILBOX1), 868 ISP_READ(isp, OUTMAILBOX2), ISP_READ(isp, OUTMAILBOX3), 869 ISP_READ(isp, OUTMAILBOX4)); 870} 871