isp_sbus.c revision 165061
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 165061 2006-12-10 03:41:48Z 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_reset1(ispsoftc_t *); 67static void isp_sbus_dumpregs(ispsoftc_t *, const char *); 68 69static struct ispmdvec mdvec = { 70 isp_sbus_rd_isr, 71 isp_sbus_rd_reg, 72 isp_sbus_wr_reg, 73 isp_sbus_mbxdma, 74 isp_sbus_dmasetup, 75 isp_sbus_dmateardown, 76 NULL, 77 isp_sbus_reset1, 78 isp_sbus_dumpregs, 79 NULL, 80 BIU_BURST_ENABLE|BIU_PCI_CONF1_FIFO_64 81}; 82 83static int isp_sbus_probe (device_t); 84static int isp_sbus_attach (device_t); 85 86 87struct isp_sbussoftc { 88 ispsoftc_t sbus_isp; 89 device_t sbus_dev; 90 struct resource * sbus_reg; 91 bus_space_tag_t sbus_st; 92 bus_space_handle_t sbus_sh; 93 void * ih; 94 int16_t sbus_poff[_NREG_BLKS]; 95 bus_dma_tag_t dmat; 96 bus_dmamap_t *dmaps; 97 sdparam sbus_param; 98 struct ispmdvec sbus_mdvec; 99 struct resource * sbus_ires; 100}; 101 102 103static device_method_t isp_sbus_methods[] = { 104 /* Device interface */ 105 DEVMETHOD(device_probe, isp_sbus_probe), 106 DEVMETHOD(device_attach, isp_sbus_attach), 107 { 0, 0 } 108}; 109static void isp_sbus_intr(void *); 110 111static driver_t isp_sbus_driver = { 112 "isp", isp_sbus_methods, sizeof (struct isp_sbussoftc) 113}; 114static devclass_t isp_devclass; 115DRIVER_MODULE(isp, sbus, isp_sbus_driver, isp_devclass, 0, 0); 116#if __FreeBSD_version < 700000 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 int ints_setup = 0; 153 154 /* 155 * Figure out if we're supposed to skip this one. 156 * If we are, we actually go to ISP_ROLE_NONE. 157 */ 158 159 tval = 0; 160 if (resource_int_value(device_get_name(dev), device_get_unit(dev), 161 "disable", &tval) == 0 && tval) { 162 device_printf(dev, "device is disabled\n"); 163 /* but return 0 so the !$)$)*!$*) unit isn't reused */ 164 return (0); 165 } 166 167 role = 0; 168 if (resource_int_value(device_get_name(dev), device_get_unit(dev), 169 "role", &role) == 0 && 170 ((role & ~(ISP_ROLE_INITIATOR|ISP_ROLE_TARGET)) == 0)) { 171 device_printf(dev, "setting role to 0x%x\n", role); 172 } else { 173#ifdef ISP_TARGET_MODE 174 role = ISP_ROLE_INITIATOR|ISP_ROLE_TARGET; 175#else 176 role = ISP_DEFAULT_ROLES; 177#endif 178 } 179 180 sbs = malloc(sizeof (*sbs), M_DEVBUF, M_NOWAIT | M_ZERO); 181 if (sbs == NULL) { 182 device_printf(dev, "cannot allocate softc\n"); 183 return (ENOMEM); 184 } 185 186 regs = NULL; 187 iqd = 0; 188 rid = 0; 189 regs = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); 190 if (regs == 0) { 191 device_printf(dev, "unable to map registers\n"); 192 goto bad; 193 } 194 sbs->sbus_dev = dev; 195 sbs->sbus_reg = regs; 196 sbs->sbus_st = rman_get_bustag(regs); 197 sbs->sbus_sh = rman_get_bushandle(regs); 198 sbs->sbus_mdvec = mdvec; 199 200 sbs->sbus_poff[BIU_BLOCK >> _BLK_REG_SHFT] = BIU_REGS_OFF; 201 sbs->sbus_poff[MBOX_BLOCK >> _BLK_REG_SHFT] = SBUS_MBOX_REGS_OFF; 202 sbs->sbus_poff[SXP_BLOCK >> _BLK_REG_SHFT] = SBUS_SXP_REGS_OFF; 203 sbs->sbus_poff[RISC_BLOCK >> _BLK_REG_SHFT] = SBUS_RISC_REGS_OFF; 204 sbs->sbus_poff[DMA_BLOCK >> _BLK_REG_SHFT] = DMA_REGS_OFF; 205 isp = &sbs->sbus_isp; 206 isp->isp_mdvec = &sbs->sbus_mdvec; 207 isp->isp_bustype = ISP_BT_SBUS; 208 isp->isp_type = ISP_HA_SCSI_UNKNOWN; 209 isp->isp_param = &sbs->sbus_param; 210 isp->isp_revision = 0; /* XXX */ 211 isp->isp_role = role; 212 isp->isp_dev = dev; 213 214 /* 215 * Get the clock frequency and convert it from HZ to MHz, 216 * rounding up. This defaults to 25MHz if there isn't a 217 * device specific one in the OFW device tree. 218 */ 219 sbs->sbus_mdvec.dv_clock = (sbus_get_clockfreq(dev) + 500000)/1000000; 220 221 /* 222 * Now figure out what the proper burst sizes, etc., to use. 223 * Unfortunately, there is no ddi_dma_burstsizes here which 224 * walks up the tree finding the limiting burst size node (if 225 * any). We just use what's here for isp. 226 */ 227 ispburst = sbus_get_burstsz(dev); 228 if (ispburst == 0) { 229 ispburst = SBUS_BURST_32 - 1; 230 } 231 sbs->sbus_mdvec.dv_conf1 = 0; 232 if (ispburst & (1 << 5)) { 233 sbs->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_32; 234 } else if (ispburst & (1 << 4)) { 235 sbs->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_16; 236 } else if (ispburst & (1 << 3)) { 237 sbs->sbus_mdvec.dv_conf1 = 238 BIU_SBUS_CONF1_BURST8 | BIU_SBUS_CONF1_FIFO_8; 239 } 240 if (sbs->sbus_mdvec.dv_conf1) { 241 sbs->sbus_mdvec.dv_conf1 |= BIU_BURST_ENABLE; 242 } 243 244 /* 245 * We don't trust NVRAM on SBus cards 246 */ 247 isp->isp_confopts |= ISP_CFG_NONVRAM; 248 249 /* 250 * Mark things if we're a PTI SBus adapter. 251 */ 252 if (strcmp("PTI,ptisp", ofw_bus_get_name(dev)) == 0 || 253 strcmp("ptisp", ofw_bus_get_name(dev)) == 0) { 254 SDPARAM(isp)->isp_ptisp = 1; 255 } 256 257 258#if __FreeBSD_version >= 700000 259 isp->isp_osinfo.fw = firmware_get("isp_1000"); 260 if (isp->isp_osinfo.fw) { 261 union { 262 const void *cp; 263 uint16_t *sp; 264 } stupid; 265 stupid.cp = isp->isp_osinfo.fw->data; 266 isp->isp_mdvec->dv_ispfw = stupid.sp; 267 } 268#else 269 /* 270 * Try and find firmware for this device. 271 */ 272 if (isp_get_firmware_p) { 273 (*isp_get_firmware_p)(0, 0, 0x1000, &sbs->sbus_mdvec.dv_ispfw); 274 } 275#endif 276 277 tval = 0; 278 if (resource_int_value(device_get_name(dev), device_get_unit(dev), 279 "fwload_disable", &tval) == 0 && tval != 0) { 280 isp->isp_confopts |= ISP_CFG_NORELOAD; 281 } 282 283 isp->isp_osinfo.default_id = -1; 284 if (resource_int_value(device_get_name(dev), device_get_unit(dev), 285 "iid", &tval) == 0) { 286 isp->isp_osinfo.default_id = tval; 287 isp->isp_confopts |= ISP_CFG_OWNLOOPID; 288 } 289 if (isp->isp_osinfo.default_id == -1) { 290 /* 291 * XXX: should be a way to get properties w/o having 292 * XXX: to call OF_xxx functions 293 */ 294 isp->isp_osinfo.default_id = 7; 295 } 296 297 isp_debug = 0; 298 (void) resource_int_value(device_get_name(dev), device_get_unit(dev), 299 "debug", &isp_debug); 300 301 /* Make sure the lock is set up. */ 302 mtx_init(&isp->isp_osinfo.lock, "isp", NULL, MTX_DEF); 303 locksetup++; 304 305 iqd = 0; 306 sbs->sbus_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ, &iqd, 307 RF_ACTIVE | RF_SHAREABLE); 308 if (sbs->sbus_ires == NULL) { 309 device_printf(dev, "could not allocate interrupt\n"); 310 goto bad; 311 } 312 313 if (bus_setup_intr(dev, sbs->sbus_ires, ISP_IFLAGS, 314 isp_sbus_intr, isp, &sbs->ih)) { 315 device_printf(dev, "could not setup interrupt\n"); 316 goto bad; 317 } 318 ints_setup++; 319 320 /* 321 * Set up logging levels. 322 */ 323 if (isp_debug) { 324 isp->isp_dblev = isp_debug; 325 } else { 326 isp->isp_dblev = ISP_LOGWARN|ISP_LOGERR; 327 } 328 if (bootverbose) { 329 isp->isp_dblev |= ISP_LOGCONFIG|ISP_LOGINFO; 330 } 331 332 /* 333 * Make sure we're in reset state. 334 */ 335 ISP_LOCK(isp); 336 isp_reset(isp); 337 if (isp->isp_state != ISP_RESETSTATE) { 338 isp_uninit(isp); 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 ISP_UNLOCK(isp); 355 return (0); 356 357bad: 358 359 if (sbs && ints_setup) { 360 (void) bus_teardown_intr(dev, sbs->sbus_ires, sbs->ih); 361 } 362 363 if (sbs && sbs->sbus_ires) { 364 bus_release_resource(dev, SYS_RES_IRQ, iqd, sbs->sbus_ires); 365 } 366 367 if (locksetup && isp) { 368 mtx_destroy(&isp->isp_osinfo.lock); 369 } 370 371 if (regs) { 372 (void) bus_release_resource(dev, 0, 0, regs); 373 } 374 375 if (sbs) { 376 if (sbs->sbus_isp.isp_param) { 377 free(sbs->sbus_isp.isp_param, M_DEVBUF); 378 } 379 free(sbs, M_DEVBUF); 380 } 381 return (ENXIO); 382} 383 384static void 385isp_sbus_intr(void *arg) 386{ 387 ispsoftc_t *isp = arg; 388 uint32_t isr; 389 uint16_t sema, mbox; 390 391 ISP_LOCK(isp); 392 isp->isp_intcnt++; 393 if (ISP_READ_ISR(isp, &isr, &sema, &mbox) == 0) { 394 isp->isp_intbogus++; 395 } else { 396 isp_intr(isp, isr, sema, mbox); 397 } 398 ISP_UNLOCK(isp); 399} 400 401#define IspVirt2Off(a, x) \ 402 (((struct isp_sbussoftc *)a)->sbus_poff[((x) & _BLK_REG_MASK) >> \ 403 _BLK_REG_SHFT] + ((x) & 0xff)) 404 405#define BXR2(sbc, off) \ 406 bus_space_read_2(sbc->sbus_st, sbc->sbus_sh, off) 407 408static int 409isp_sbus_rd_isr(ispsoftc_t *isp, uint32_t *isrp, uint16_t *semap, uint16_t *mbp) 410{ 411 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 412 uint16_t isr, sema; 413 414 isr = BXR2(sbc, IspVirt2Off(isp, BIU_ISR)); 415 sema = BXR2(sbc, IspVirt2Off(isp, BIU_SEMA)); 416 isp_prt(isp, ISP_LOGDEBUG3, "ISR 0x%x SEMA 0x%x", isr, sema); 417 isr &= INT_PENDING_MASK(isp); 418 sema &= BIU_SEMA_LOCK; 419 if (isr == 0 && sema == 0) { 420 return (0); 421 } 422 *isrp = isr; 423 if ((*semap = sema) != 0) { 424 *mbp = BXR2(sbc, IspVirt2Off(isp, OUTMAILBOX0)); 425 } 426 return (1); 427} 428 429static uint32_t 430isp_sbus_rd_reg(ispsoftc_t *isp, int regoff) 431{ 432 uint16_t rval; 433 struct isp_sbussoftc *sbs = (struct isp_sbussoftc *) isp; 434 int offset = sbs->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 435 offset += (regoff & 0xff); 436 rval = bus_space_read_2(sbs->sbus_st, sbs->sbus_sh, offset); 437 isp_prt(isp, ISP_LOGDEBUG3, 438 "isp_sbus_rd_reg(off %x) = %x", regoff, rval); 439 return (rval); 440} 441 442static void 443isp_sbus_wr_reg(ispsoftc_t *isp, int regoff, uint32_t val) 444{ 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 isp_prt(isp, ISP_LOGDEBUG3, 449 "isp_sbus_wr_reg(off %x) = %x", regoff, val); 450 bus_space_write_2(sbs->sbus_st, sbs->sbus_sh, offset, val); 451} 452 453struct imush { 454 ispsoftc_t *isp; 455 int error; 456}; 457 458static void imc(void *, bus_dma_segment_t *, int, int); 459 460static void 461imc(void *arg, bus_dma_segment_t *segs, int nseg, int error) 462{ 463 struct imush *imushp = (struct imush *) arg; 464 if (error) { 465 imushp->error = error; 466 } else { 467 ispsoftc_t *isp =imushp->isp; 468 bus_addr_t addr = segs->ds_addr; 469 470 isp->isp_rquest_dma = addr; 471 addr += ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); 472 isp->isp_result_dma = addr; 473 } 474} 475 476/* 477 * Should be BUS_SPACE_MAXSIZE, but MAXPHYS is larger than BUS_SPACE_MAXSIZE 478 */ 479#define ISP_NSEGS ((MAXPHYS / PAGE_SIZE) + 1) 480 481static int 482isp_sbus_mbxdma(ispsoftc_t *isp) 483{ 484 struct isp_sbussoftc *sbs = (struct isp_sbussoftc *)isp; 485 caddr_t base; 486 uint32_t len; 487 int i, error, ns; 488 struct imush im; 489 490 /* 491 * Already been here? If so, leave... 492 */ 493 if (isp->isp_rquest) { 494 return (0); 495 } 496 497 ISP_UNLOCK(isp); 498 499 if (bus_dma_tag_create(NULL, 1, BUS_SPACE_MAXADDR_24BIT+1, 500 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR_32BIT, 501 NULL, NULL, BUS_SPACE_MAXSIZE_32BIT, ISP_NSEGS, 502 BUS_SPACE_MAXADDR_24BIT, 0, busdma_lock_mutex, &Giant, 503 &sbs->dmat)) { 504 isp_prt(isp, ISP_LOGERR, "could not create master dma tag"); 505 ISP_LOCK(isp); 506 return(1); 507 } 508 509 len = sizeof (XS_T **) * isp->isp_maxcmds; 510 isp->isp_xflist = (XS_T **) malloc(len, M_DEVBUF, M_WAITOK | M_ZERO); 511 if (isp->isp_xflist == NULL) { 512 isp_prt(isp, ISP_LOGERR, "cannot alloc xflist array"); 513 ISP_LOCK(isp); 514 return (1); 515 } 516 len = sizeof (bus_dmamap_t) * isp->isp_maxcmds; 517 sbs->dmaps = (bus_dmamap_t *) malloc(len, M_DEVBUF, M_WAITOK); 518 if (sbs->dmaps == NULL) { 519 isp_prt(isp, ISP_LOGERR, "can't alloc dma map storage"); 520 free(isp->isp_xflist, M_DEVBUF); 521 ISP_LOCK(isp); 522 return (1); 523 } 524 525 /* 526 * Allocate and map the request, result queues, plus FC scratch area. 527 */ 528 len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); 529 len += ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp)); 530 531 ns = (len / PAGE_SIZE) + 1; 532 if (bus_dma_tag_create(sbs->dmat, QENTRY_LEN, BUS_SPACE_MAXADDR_24BIT+1, 533 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR_32BIT, NULL, NULL, 534 len, ns, BUS_SPACE_MAXADDR_24BIT, 0, busdma_lock_mutex, &Giant, 535 &isp->isp_cdmat)) { 536 isp_prt(isp, ISP_LOGERR, 537 "cannot create a dma tag for control spaces"); 538 free(sbs->dmaps, M_DEVBUF); 539 free(isp->isp_xflist, M_DEVBUF); 540 ISP_LOCK(isp); 541 return (1); 542 } 543 544 if (bus_dmamem_alloc(isp->isp_cdmat, (void **)&base, BUS_DMA_NOWAIT, 545 &isp->isp_cdmap) != 0) { 546 isp_prt(isp, ISP_LOGERR, 547 "cannot allocate %d bytes of CCB memory", len); 548 bus_dma_tag_destroy(isp->isp_cdmat); 549 free(isp->isp_xflist, M_DEVBUF); 550 free(sbs->dmaps, M_DEVBUF); 551 ISP_LOCK(isp); 552 return (1); 553 } 554 555 for (i = 0; i < isp->isp_maxcmds; i++) { 556 error = bus_dmamap_create(sbs->dmat, 0, &sbs->dmaps[i]); 557 if (error) { 558 isp_prt(isp, ISP_LOGERR, 559 "error %d creating per-cmd DMA maps", error); 560 while (--i >= 0) { 561 bus_dmamap_destroy(sbs->dmat, sbs->dmaps[i]); 562 } 563 goto bad; 564 } 565 } 566 567 im.isp = isp; 568 im.error = 0; 569 bus_dmamap_load(isp->isp_cdmat, isp->isp_cdmap, base, len, imc, &im, 0); 570 if (im.error) { 571 isp_prt(isp, ISP_LOGERR, 572 "error %d loading dma map for control areas", im.error); 573 goto bad; 574 } 575 576 isp->isp_rquest = base; 577 base += ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); 578 ISP_LOCK(isp); 579 isp->isp_result = base; 580 return (0); 581 582bad: 583 bus_dmamem_free(isp->isp_cdmat, base, isp->isp_cdmap); 584 bus_dma_tag_destroy(isp->isp_cdmat); 585 free(isp->isp_xflist, M_DEVBUF); 586 free(sbs->dmaps, M_DEVBUF); 587 ISP_LOCK(isp); 588 isp->isp_rquest = NULL; 589 return (1); 590} 591 592typedef struct { 593 ispsoftc_t *isp; 594 void *cmd_token; 595 void *rq; 596 uint32_t *nxtip; 597 uint32_t optr; 598 int error; 599} mush_t; 600 601#define MUSHERR_NOQENTRIES -2 602 603 604static void dma2(void *, bus_dma_segment_t *, int, int); 605 606static void 607dma2(void *arg, bus_dma_segment_t *dm_segs, int nseg, int error) 608{ 609 mush_t *mp; 610 ispsoftc_t *isp; 611 struct ccb_scsiio *csio; 612 struct isp_sbussoftc *sbs; 613 bus_dmamap_t *dp; 614 bus_dma_segment_t *eseg; 615 ispreq_t *rq; 616 int seglim, datalen; 617 uint16_t nxti; 618 619 mp = (mush_t *) arg; 620 if (error) { 621 mp->error = error; 622 return; 623 } 624 625 if (nseg < 1) { 626 isp_prt(mp->isp, ISP_LOGERR, "bad segment count (%d)", nseg); 627 mp->error = EFAULT; 628 return; 629 } 630 csio = mp->cmd_token; 631 isp = mp->isp; 632 rq = mp->rq; 633 sbs = (struct isp_sbussoftc *)mp->isp; 634 dp = &sbs->dmaps[isp_handle_index(rq->req_handle)]; 635 nxti = *mp->nxtip; 636 637 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 638 bus_dmamap_sync(sbs->dmat, *dp, BUS_DMASYNC_PREREAD); 639 } else { 640 bus_dmamap_sync(sbs->dmat, *dp, BUS_DMASYNC_PREWRITE); 641 } 642 643 datalen = XS_XFRLEN(csio); 644 645 /* 646 * We're passed an initial partially filled in entry that 647 * has most fields filled in except for data transfer 648 * related values. 649 * 650 * Our job is to fill in the initial request queue entry and 651 * then to start allocating and filling in continuation entries 652 * until we've covered the entire transfer. 653 */ 654 655 if (csio->cdb_len > 12) { 656 seglim = 0; 657 } else { 658 seglim = ISP_RQDSEG; 659 } 660 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 661 rq->req_flags |= REQFLAG_DATA_IN; 662 } else { 663 rq->req_flags |= REQFLAG_DATA_OUT; 664 } 665 666 eseg = dm_segs + nseg; 667 668 while (datalen != 0 && rq->req_seg_count < seglim && dm_segs != eseg) { 669 rq->req_dataseg[rq->req_seg_count].ds_base = dm_segs->ds_addr; 670 rq->req_dataseg[rq->req_seg_count].ds_count = dm_segs->ds_len; 671 datalen -= dm_segs->ds_len; 672 rq->req_seg_count++; 673 dm_segs++; 674 } 675 676 while (datalen > 0 && dm_segs != eseg) { 677 uint16_t onxti; 678 ispcontreq_t local, *crq = &local, *cqe; 679 680 cqe = (ispcontreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, nxti); 681 onxti = nxti; 682 nxti = ISP_NXT_QENTRY(onxti, RQUEST_QUEUE_LEN(isp)); 683 if (nxti == mp->optr) { 684 isp_prt(isp, ISP_LOGDEBUG0, "Request Queue Overflow++"); 685 mp->error = MUSHERR_NOQENTRIES; 686 return; 687 } 688 rq->req_header.rqs_entry_count++; 689 MEMZERO((void *)crq, sizeof (*crq)); 690 crq->req_header.rqs_entry_count = 1; 691 crq->req_header.rqs_entry_type = RQSTYPE_DATASEG; 692 693 seglim = 0; 694 while (datalen > 0 && seglim < ISP_CDSEG && dm_segs != eseg) { 695 crq->req_dataseg[seglim].ds_base = 696 dm_segs->ds_addr; 697 crq->req_dataseg[seglim].ds_count = 698 dm_segs->ds_len; 699 rq->req_seg_count++; 700 dm_segs++; 701 seglim++; 702 datalen -= dm_segs->ds_len; 703 } 704 isp_put_cont_req(isp, crq, cqe); 705 MEMORYBARRIER(isp, SYNC_REQUEST, onxti, QENTRY_LEN); 706 } 707 *mp->nxtip = nxti; 708} 709 710static int 711isp_sbus_dmasetup(ispsoftc_t *isp, struct ccb_scsiio *csio, ispreq_t *rq, 712 uint32_t *nxtip, uint32_t optr) 713{ 714 struct isp_sbussoftc *sbs = (struct isp_sbussoftc *)isp; 715 ispreq_t *qep; 716 bus_dmamap_t *dp = NULL; 717 mush_t mush, *mp; 718 void (*eptr)(void *, bus_dma_segment_t *, int, int); 719 720 qep = (ispreq_t *) ISP_QUEUE_ENTRY(isp->isp_rquest, isp->isp_reqidx); 721 eptr = dma2; 722 723 724 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_NONE || 725 (csio->dxfer_len == 0)) { 726 rq->req_seg_count = 1; 727 goto mbxsync; 728 } 729 730 /* 731 * Do a virtual grapevine step to collect info for 732 * the callback dma allocation that we have to use... 733 */ 734 mp = &mush; 735 mp->isp = isp; 736 mp->cmd_token = csio; 737 mp->rq = rq; 738 mp->nxtip = nxtip; 739 mp->optr = optr; 740 mp->error = 0; 741 742 if ((csio->ccb_h.flags & CAM_SCATTER_VALID) == 0) { 743 if ((csio->ccb_h.flags & CAM_DATA_PHYS) == 0) { 744 int error, s; 745 dp = &sbs->dmaps[isp_handle_index(rq->req_handle)]; 746 s = splsoftvm(); 747 error = bus_dmamap_load(sbs->dmat, *dp, 748 csio->data_ptr, csio->dxfer_len, eptr, mp, 0); 749 if (error == EINPROGRESS) { 750 bus_dmamap_unload(sbs->dmat, *dp); 751 mp->error = EINVAL; 752 isp_prt(isp, ISP_LOGERR, 753 "deferred dma allocation not supported"); 754 } else if (error && mp->error == 0) { 755#ifdef DIAGNOSTIC 756 isp_prt(isp, ISP_LOGERR, 757 "error %d in dma mapping code", error); 758#endif 759 mp->error = error; 760 } 761 splx(s); 762 } else { 763 /* Pointer to physical buffer */ 764 struct bus_dma_segment seg; 765 seg.ds_addr = (bus_addr_t)csio->data_ptr; 766 seg.ds_len = csio->dxfer_len; 767 (*eptr)(mp, &seg, 1, 0); 768 } 769 } else { 770 struct bus_dma_segment *segs; 771 772 if ((csio->ccb_h.flags & CAM_DATA_PHYS) != 0) { 773 isp_prt(isp, ISP_LOGERR, 774 "Physical segment pointers unsupported"); 775 mp->error = EINVAL; 776 } else if ((csio->ccb_h.flags & CAM_SG_LIST_PHYS) == 0) { 777 isp_prt(isp, ISP_LOGERR, 778 "Virtual segment addresses unsupported"); 779 mp->error = EINVAL; 780 } else { 781 /* Just use the segments provided */ 782 segs = (struct bus_dma_segment *) csio->data_ptr; 783 (*eptr)(mp, segs, csio->sglist_cnt, 0); 784 } 785 } 786 if (mp->error) { 787 int retval = CMD_COMPLETE; 788 if (mp->error == MUSHERR_NOQENTRIES) { 789 retval = CMD_EAGAIN; 790 } else if (mp->error == EFBIG) { 791 XS_SETERR(csio, CAM_REQ_TOO_BIG); 792 } else if (mp->error == EINVAL) { 793 XS_SETERR(csio, CAM_REQ_INVALID); 794 } else { 795 XS_SETERR(csio, CAM_UNREC_HBA_ERROR); 796 } 797 return (retval); 798 } 799mbxsync: 800 if (isp->isp_dblev & ISP_LOGDEBUG1) { 801 isp_print_bytes(isp, "Request Queue Entry", QENTRY_LEN, rq); 802 } 803 switch (rq->req_header.rqs_entry_type) { 804 case RQSTYPE_REQUEST: 805 isp_put_request(isp, rq, qep); 806 break; 807 case RQSTYPE_CMDONLY: 808 isp_put_extended_request(isp, (ispextreq_t *)rq, 809 (ispextreq_t *)qep); 810 break; 811 } 812 return (CMD_QUEUED); 813} 814 815static void 816isp_sbus_dmateardown(ispsoftc_t *isp, XS_T *xs, uint32_t handle) 817{ 818 struct isp_sbussoftc *sbs = (struct isp_sbussoftc *)isp; 819 bus_dmamap_t *dp = &sbs->dmaps[isp_handle_index(handle)]; 820 if ((xs->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 821 bus_dmamap_sync(sbs->dmat, *dp, BUS_DMASYNC_POSTREAD); 822 } else { 823 bus_dmamap_sync(sbs->dmat, *dp, BUS_DMASYNC_POSTWRITE); 824 } 825 bus_dmamap_unload(sbs->dmat, *dp); 826} 827 828static void 829isp_sbus_reset1(ispsoftc_t *isp) 830{ 831 ISP_ENABLE_INTS(isp); 832} 833 834static void 835isp_sbus_dumpregs(ispsoftc_t *isp, const char *msg) 836{ 837 if (msg) 838 printf("%s: %s\n", device_get_nameunit(isp->isp_dev), msg); 839 else 840 printf("%s:\n", device_get_nameunit(isp->isp_dev)); 841 printf(" biu_conf1=%x", ISP_READ(isp, BIU_CONF1)); 842 printf(" biu_icr=%x biu_isr=%x biu_sema=%x ", ISP_READ(isp, BIU_ICR), 843 ISP_READ(isp, BIU_ISR), ISP_READ(isp, BIU_SEMA)); 844 printf("risc_hccr=%x\n", ISP_READ(isp, HCCR)); 845 846 847 ISP_WRITE(isp, HCCR, HCCR_CMD_PAUSE); 848 printf(" cdma_conf=%x cdma_sts=%x cdma_fifostat=%x\n", 849 ISP_READ(isp, CDMA_CONF), ISP_READ(isp, CDMA_STATUS), 850 ISP_READ(isp, CDMA_FIFO_STS)); 851 printf(" ddma_conf=%x ddma_sts=%x ddma_fifostat=%x\n", 852 ISP_READ(isp, DDMA_CONF), ISP_READ(isp, DDMA_STATUS), 853 ISP_READ(isp, DDMA_FIFO_STS)); 854 printf(" sxp_int=%x sxp_gross=%x sxp(scsi_ctrl)=%x\n", 855 ISP_READ(isp, SXP_INTERRUPT), 856 ISP_READ(isp, SXP_GROSS_ERR), 857 ISP_READ(isp, SXP_PINS_CTRL)); 858 ISP_WRITE(isp, HCCR, HCCR_CMD_RELEASE); 859 printf(" mbox regs: %x %x %x %x %x\n", 860 ISP_READ(isp, OUTMAILBOX0), ISP_READ(isp, OUTMAILBOX1), 861 ISP_READ(isp, OUTMAILBOX2), ISP_READ(isp, OUTMAILBOX3), 862 ISP_READ(isp, OUTMAILBOX4)); 863} 864