1 /* $NetBSD: twe.c,v 1.96 2012/01/27 19:48:39 para Exp $ */ 2 3 /*- 4 * Copyright (c) 2000, 2001, 2002, 2003, 2004 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Andrew Doran; and by Jason R. Thorpe of Wasabi Systems, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /*- 33 * Copyright (c) 2000 Michael Smith 34 * Copyright (c) 2000 BSDi 35 * All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 47 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 48 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 49 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 50 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 51 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 52 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 53 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 54 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 55 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 56 * SUCH DAMAGE. 57 * 58 * from FreeBSD: twe.c,v 1.1 2000/05/24 23:35:23 msmith Exp 59 */ 60 61 /* 62 * Driver for the 3ware Escalade family of RAID controllers. 63 */ 64 65 #include <sys/cdefs.h> 66 __KERNEL_RCSID(0, "$NetBSD: twe.c,v 1.96 2012/01/27 19:48:39 para Exp $"); 67 68 #include <sys/param.h> 69 #include <sys/systm.h> 70 #include <sys/kernel.h> 71 #include <sys/device.h> 72 #include <sys/queue.h> 73 #include <sys/proc.h> 74 #include <sys/buf.h> 75 #include <sys/endian.h> 76 #include <sys/malloc.h> 77 #include <sys/conf.h> 78 #include <sys/disk.h> 79 #include <sys/sysctl.h> 80 #include <sys/syslog.h> 81 #include <sys/kauth.h> 82 83 #include <sys/bswap.h> 84 #include <sys/bus.h> 85 86 #include <dev/pci/pcireg.h> 87 #include <dev/pci/pcivar.h> 88 #include <dev/pci/pcidevs.h> 89 #include <dev/pci/twereg.h> 90 #include <dev/pci/twevar.h> 91 #include <dev/pci/tweio.h> 92 93 #include "locators.h" 94 95 #define PCI_CBIO 0x10 96 97 static int twe_aen_get(struct twe_softc *, uint16_t *); 98 static void twe_aen_handler(struct twe_ccb *, int); 99 static void twe_aen_enqueue(struct twe_softc *sc, uint16_t, int); 100 static uint16_t twe_aen_dequeue(struct twe_softc *); 101 102 static void twe_attach(device_t, device_t, void *); 103 static int twe_init_connection(struct twe_softc *); 104 static int twe_intr(void *); 105 static int twe_match(device_t, cfdata_t, void *); 106 static int twe_param_set(struct twe_softc *, int, int, size_t, void *); 107 static void twe_poll(struct twe_softc *); 108 static int twe_print(void *, const char *); 109 static int twe_reset(struct twe_softc *); 110 static int twe_status_check(struct twe_softc *, u_int); 111 static int twe_status_wait(struct twe_softc *, u_int, int); 112 static void twe_describe_controller(struct twe_softc *); 113 static void twe_clear_pci_abort(struct twe_softc *sc); 114 static void twe_clear_pci_parity_error(struct twe_softc *sc); 115 116 static int twe_add_unit(struct twe_softc *, int); 117 static int twe_del_unit(struct twe_softc *, int); 118 static int twe_init_connection(struct twe_softc *); 119 120 static inline u_int32_t twe_inl(struct twe_softc *, int); 121 static inline void twe_outl(struct twe_softc *, int, u_int32_t); 122 123 extern struct cfdriver twe_cd; 124 125 CFATTACH_DECL(twe, sizeof(struct twe_softc), 126 twe_match, twe_attach, NULL, NULL); 127 128 /* FreeBSD driver revision for sysctl expected by the 3ware cli */ 129 const char twever[] = "1.50.01.002"; 130 131 /* 132 * Tables to convert numeric codes to strings. 133 */ 134 const struct twe_code_table twe_table_status[] = { 135 { 0x00, "successful completion" }, 136 137 /* info */ 138 { 0x42, "command in progress" }, 139 { 0x6c, "retrying interface CRC error from UDMA command" }, 140 141 /* warning */ 142 { 0x81, "redundant/inconsequential request ignored" }, 143 { 0x8e, "failed to write zeroes to LBA 0" }, 144 { 0x8f, "failed to profile TwinStor zones" }, 145 146 /* fatal */ 147 { 0xc1, "aborted due to system command or reconfiguration" }, 148 { 0xc4, "aborted" }, 149 { 0xc5, "access error" }, 150 { 0xc6, "access violation" }, 151 { 0xc7, "device failure" }, /* high byte may be port # */ 152 { 0xc8, "controller error" }, 153 { 0xc9, "timed out" }, 154 { 0xcb, "invalid unit number" }, 155 { 0xcf, "unit not available" }, 156 { 0xd2, "undefined opcode" }, 157 { 0xdb, "request incompatible with unit" }, 158 { 0xdc, "invalid request" }, 159 { 0xff, "firmware error, reset requested" }, 160 161 { 0, NULL } 162 }; 163 164 const struct twe_code_table twe_table_unitstate[] = { 165 { TWE_PARAM_UNITSTATUS_Normal, "Normal" }, 166 { TWE_PARAM_UNITSTATUS_Initialising, "Initializing" }, 167 { TWE_PARAM_UNITSTATUS_Degraded, "Degraded" }, 168 { TWE_PARAM_UNITSTATUS_Rebuilding, "Rebuilding" }, 169 { TWE_PARAM_UNITSTATUS_Verifying, "Verifying" }, 170 { TWE_PARAM_UNITSTATUS_Corrupt, "Corrupt" }, 171 { TWE_PARAM_UNITSTATUS_Missing, "Missing" }, 172 173 { 0, NULL } 174 }; 175 176 const struct twe_code_table twe_table_unittype[] = { 177 /* array descriptor configuration */ 178 { TWE_AD_CONFIG_RAID0, "RAID0" }, 179 { TWE_AD_CONFIG_RAID1, "RAID1" }, 180 { TWE_AD_CONFIG_TwinStor, "TwinStor" }, 181 { TWE_AD_CONFIG_RAID5, "RAID5" }, 182 { TWE_AD_CONFIG_RAID10, "RAID10" }, 183 { TWE_UD_CONFIG_JBOD, "JBOD" }, 184 185 { 0, NULL } 186 }; 187 188 const struct twe_code_table twe_table_stripedepth[] = { 189 { TWE_AD_STRIPE_4k, "4K" }, 190 { TWE_AD_STRIPE_8k, "8K" }, 191 { TWE_AD_STRIPE_16k, "16K" }, 192 { TWE_AD_STRIPE_32k, "32K" }, 193 { TWE_AD_STRIPE_64k, "64K" }, 194 { TWE_AD_STRIPE_128k, "128K" }, 195 { TWE_AD_STRIPE_256k, "256K" }, 196 { TWE_AD_STRIPE_512k, "512K" }, 197 { TWE_AD_STRIPE_1024k, "1024K" }, 198 199 { 0, NULL } 200 }; 201 202 /* 203 * Asynchronous event notification messages are qualified: 204 * a - not unit/port specific 205 * u - unit specific 206 * p - port specific 207 * 208 * They are further qualified with a severity: 209 * E - LOG_EMERG 210 * a - LOG_ALERT 211 * c - LOG_CRIT 212 * e - LOG_ERR 213 * w - LOG_WARNING 214 * n - LOG_NOTICE 215 * i - LOG_INFO 216 * d - LOG_DEBUG 217 * blank - just use printf 218 */ 219 const struct twe_code_table twe_table_aen[] = { 220 { 0x00, "a queue empty" }, 221 { 0x01, "a soft reset" }, 222 { 0x02, "uc degraded mode" }, 223 { 0x03, "aa controller error" }, 224 { 0x04, "uE rebuild fail" }, 225 { 0x05, "un rebuild done" }, 226 { 0x06, "ue incomplete unit" }, 227 { 0x07, "un initialization done" }, 228 { 0x08, "uw unclean shutdown detected" }, 229 { 0x09, "pe drive timeout" }, 230 { 0x0a, "pc drive error" }, 231 { 0x0b, "un rebuild started" }, 232 { 0x0c, "un initialization started" }, 233 { 0x0d, "ui logical unit deleted" }, 234 { 0x0f, "pc SMART threshold exceeded" }, 235 { 0x15, "a table undefined" }, /* XXX: Not in FreeBSD's table */ 236 { 0x21, "pe ATA UDMA downgrade" }, 237 { 0x22, "pi ATA UDMA upgrade" }, 238 { 0x23, "pw sector repair occurred" }, 239 { 0x24, "aa SBUF integrity check failure" }, 240 { 0x25, "pa lost cached write" }, 241 { 0x26, "pa drive ECC error detected" }, 242 { 0x27, "pe DCB checksum error" }, 243 { 0x28, "pn DCB unsupported version" }, 244 { 0x29, "ui verify started" }, 245 { 0x2a, "ua verify failed" }, 246 { 0x2b, "ui verify complete" }, 247 { 0x2c, "pw overwrote bad sector during rebuild" }, 248 { 0x2d, "pa encountered bad sector during rebuild" }, 249 { 0x2e, "pe replacement drive too small" }, 250 { 0x2f, "ue array not previously initialized" }, 251 { 0x30, "p drive not supported" }, 252 { 0xff, "a aen queue full" }, 253 254 { 0, NULL }, 255 }; 256 257 const char * 258 twe_describe_code(const struct twe_code_table *table, uint32_t code) 259 { 260 261 for (; table->string != NULL; table++) { 262 if (table->code == code) 263 return (table->string); 264 } 265 return (NULL); 266 } 267 268 static inline u_int32_t 269 twe_inl(struct twe_softc *sc, int off) 270 { 271 272 bus_space_barrier(sc->sc_iot, sc->sc_ioh, off, 4, 273 BUS_SPACE_BARRIER_WRITE | BUS_SPACE_BARRIER_READ); 274 return (bus_space_read_4(sc->sc_iot, sc->sc_ioh, off)); 275 } 276 277 static inline void 278 twe_outl(struct twe_softc *sc, int off, u_int32_t val) 279 { 280 281 bus_space_write_4(sc->sc_iot, sc->sc_ioh, off, val); 282 bus_space_barrier(sc->sc_iot, sc->sc_ioh, off, 4, 283 BUS_SPACE_BARRIER_WRITE); 284 } 285 286 /* 287 * Match a supported board. 288 */ 289 static int 290 twe_match(device_t parent, cfdata_t cfdata, void *aux) 291 { 292 struct pci_attach_args *pa; 293 294 pa = aux; 295 296 return (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_3WARE && 297 (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_3WARE_ESCALADE || 298 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_3WARE_ESCALADE_ASIC)); 299 } 300 301 /* 302 * Attach a supported board. 303 * 304 * XXX This doesn't fail gracefully. 305 */ 306 static void 307 twe_attach(device_t parent, device_t self, void *aux) 308 { 309 struct pci_attach_args *pa; 310 struct twe_softc *sc; 311 pci_chipset_tag_t pc; 312 pci_intr_handle_t ih; 313 pcireg_t csr; 314 const char *intrstr; 315 int s, size, i, rv, rseg; 316 size_t max_segs, max_xfer; 317 bus_dma_segment_t seg; 318 const struct sysctlnode *node; 319 struct twe_cmd *tc; 320 struct twe_ccb *ccb; 321 322 sc = device_private(self); 323 pa = aux; 324 pc = pa->pa_pc; 325 sc->sc_dmat = pa->pa_dmat; 326 SIMPLEQ_INIT(&sc->sc_ccb_queue); 327 SLIST_INIT(&sc->sc_ccb_freelist); 328 329 aprint_naive(": RAID controller\n"); 330 aprint_normal(": 3ware Escalade\n"); 331 332 333 if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0, 334 &sc->sc_iot, &sc->sc_ioh, NULL, NULL)) { 335 aprint_error_dev(&sc->sc_dv, "can't map i/o space\n"); 336 return; 337 } 338 339 /* Enable the device. */ 340 csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 341 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 342 csr | PCI_COMMAND_MASTER_ENABLE); 343 344 /* Map and establish the interrupt. */ 345 if (pci_intr_map(pa, &ih)) { 346 aprint_error_dev(&sc->sc_dv, "can't map interrupt\n"); 347 return; 348 } 349 350 intrstr = pci_intr_string(pc, ih); 351 sc->sc_ih = pci_intr_establish(pc, ih, IPL_BIO, twe_intr, sc); 352 if (sc->sc_ih == NULL) { 353 aprint_error_dev(&sc->sc_dv, "can't establish interrupt%s%s\n", 354 (intrstr) ? " at " : "", 355 (intrstr) ? intrstr : ""); 356 return; 357 } 358 359 if (intrstr != NULL) 360 aprint_normal_dev(&sc->sc_dv, "interrupting at %s\n", 361 intrstr); 362 363 /* 364 * Allocate and initialise the command blocks and CCBs. 365 */ 366 size = sizeof(struct twe_cmd) * TWE_MAX_QUEUECNT; 367 368 if ((rv = bus_dmamem_alloc(sc->sc_dmat, size, PAGE_SIZE, 0, &seg, 1, 369 &rseg, BUS_DMA_NOWAIT)) != 0) { 370 aprint_error_dev(&sc->sc_dv, "unable to allocate commands, rv = %d\n", rv); 371 return; 372 } 373 374 if ((rv = bus_dmamem_map(sc->sc_dmat, &seg, rseg, size, 375 (void **)&sc->sc_cmds, 376 BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { 377 aprint_error_dev(&sc->sc_dv, "unable to map commands, rv = %d\n", rv); 378 return; 379 } 380 381 if ((rv = bus_dmamap_create(sc->sc_dmat, size, size, 1, 0, 382 BUS_DMA_NOWAIT, &sc->sc_dmamap)) != 0) { 383 aprint_error_dev(&sc->sc_dv, "unable to create command DMA map, rv = %d\n", rv); 384 return; 385 } 386 387 if ((rv = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap, sc->sc_cmds, 388 size, NULL, BUS_DMA_NOWAIT)) != 0) { 389 aprint_error_dev(&sc->sc_dv, "unable to load command DMA map, rv = %d\n", rv); 390 return; 391 } 392 393 ccb = malloc(sizeof(*ccb) * TWE_MAX_QUEUECNT, M_DEVBUF, M_NOWAIT); 394 if (ccb == NULL) { 395 aprint_error_dev(&sc->sc_dv, "unable to allocate memory for ccbs\n"); 396 return; 397 } 398 399 sc->sc_cmds_paddr = sc->sc_dmamap->dm_segs[0].ds_addr; 400 memset(sc->sc_cmds, 0, size); 401 402 sc->sc_ccbs = ccb; 403 tc = (struct twe_cmd *)sc->sc_cmds; 404 max_segs = twe_get_maxsegs(); 405 max_xfer = twe_get_maxxfer(max_segs); 406 407 for (i = 0; i < TWE_MAX_QUEUECNT; i++, tc++, ccb++) { 408 ccb->ccb_cmd = tc; 409 ccb->ccb_cmdid = i; 410 ccb->ccb_flags = 0; 411 rv = bus_dmamap_create(sc->sc_dmat, max_xfer, 412 max_segs, PAGE_SIZE, 0, 413 BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, 414 &ccb->ccb_dmamap_xfer); 415 if (rv != 0) { 416 aprint_error_dev(&sc->sc_dv, "can't create dmamap, rv = %d\n", rv); 417 return; 418 } 419 420 /* Save the first CCB for AEN retrieval. */ 421 if (i != 0) 422 SLIST_INSERT_HEAD(&sc->sc_ccb_freelist, ccb, 423 ccb_chain.slist); 424 } 425 426 /* Wait for the controller to become ready. */ 427 if (twe_status_wait(sc, TWE_STS_MICROCONTROLLER_READY, 6)) { 428 aprint_error_dev(&sc->sc_dv, "microcontroller not ready\n"); 429 return; 430 } 431 432 twe_outl(sc, TWE_REG_CTL, TWE_CTL_DISABLE_INTRS); 433 434 /* Reset the controller. */ 435 s = splbio(); 436 rv = twe_reset(sc); 437 splx(s); 438 if (rv) { 439 aprint_error_dev(&sc->sc_dv, "reset failed\n"); 440 return; 441 } 442 443 /* Initialise connection with controller. */ 444 twe_init_connection(sc); 445 446 twe_describe_controller(sc); 447 448 /* Find and attach RAID array units. */ 449 sc->sc_nunits = 0; 450 for (i = 0; i < TWE_MAX_UNITS; i++) 451 (void) twe_add_unit(sc, i); 452 453 /* ...and finally, enable interrupts. */ 454 twe_outl(sc, TWE_REG_CTL, TWE_CTL_CLEAR_ATTN_INTR | 455 TWE_CTL_UNMASK_RESP_INTR | 456 TWE_CTL_ENABLE_INTRS); 457 458 /* sysctl set-up for 3ware cli */ 459 if (sysctl_createv(NULL, 0, NULL, NULL, 460 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", 461 NULL, NULL, 0, NULL, 0, 462 CTL_HW, CTL_EOL) != 0) { 463 aprint_error_dev(&sc->sc_dv, "could not create %s sysctl node\n", 464 "hw"); 465 return; 466 } 467 if (sysctl_createv(NULL, 0, NULL, &node, 468 0, CTLTYPE_NODE, device_xname(&sc->sc_dv), 469 SYSCTL_DESCR("twe driver information"), 470 NULL, 0, NULL, 0, 471 CTL_HW, CTL_CREATE, CTL_EOL) != 0) { 472 aprint_error_dev(&sc->sc_dv, "could not create %s.%s sysctl node\n", 473 "hw", device_xname(&sc->sc_dv)); 474 return; 475 } 476 if ((i = sysctl_createv(NULL, 0, NULL, NULL, 477 0, CTLTYPE_STRING, "driver_version", 478 SYSCTL_DESCR("twe0 driver version"), 479 NULL, 0, __UNCONST(&twever), 0, 480 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL)) 481 != 0) { 482 aprint_error_dev(&sc->sc_dv, "could not create %s.%s.driver_version sysctl\n", 483 "hw", device_xname(&sc->sc_dv)); 484 return; 485 } 486 } 487 488 void 489 twe_register_callbacks(struct twe_softc *sc, int unit, 490 const struct twe_callbacks *tcb) 491 { 492 493 sc->sc_units[unit].td_callbacks = tcb; 494 } 495 496 static void 497 twe_recompute_openings(struct twe_softc *sc) 498 { 499 struct twe_drive *td; 500 int unit, openings; 501 502 if (sc->sc_nunits != 0) 503 openings = (TWE_MAX_QUEUECNT - 1) / sc->sc_nunits; 504 else 505 openings = 0; 506 if (openings == sc->sc_openings) 507 return; 508 sc->sc_openings = openings; 509 510 #ifdef TWE_DEBUG 511 printf("%s: %d array%s, %d openings per array\n", 512 device_xname(&sc->sc_dv), sc->sc_nunits, 513 sc->sc_nunits == 1 ? "" : "s", sc->sc_openings); 514 #endif 515 516 for (unit = 0; unit < TWE_MAX_UNITS; unit++) { 517 td = &sc->sc_units[unit]; 518 if (td->td_dev != NULL) 519 (*td->td_callbacks->tcb_openings)(td->td_dev, 520 sc->sc_openings); 521 } 522 } 523 524 static int 525 twe_add_unit(struct twe_softc *sc, int unit) 526 { 527 struct twe_param *dtp, *atp; 528 struct twe_array_descriptor *ad; 529 struct twe_drive *td; 530 struct twe_attach_args twea; 531 uint32_t newsize; 532 int rv; 533 uint16_t dsize; 534 uint8_t newtype, newstripe; 535 int locs[TWECF_NLOCS]; 536 537 if (unit < 0 || unit >= TWE_MAX_UNITS) 538 return (EINVAL); 539 540 /* Find attached units. */ 541 rv = twe_param_get(sc, TWE_PARAM_UNITSUMMARY, 542 TWE_PARAM_UNITSUMMARY_Status, TWE_MAX_UNITS, NULL, &dtp); 543 if (rv != 0) { 544 aprint_error_dev(&sc->sc_dv, "error %d fetching unit summary\n", 545 rv); 546 return (rv); 547 } 548 549 /* For each detected unit, collect size and store in an array. */ 550 td = &sc->sc_units[unit]; 551 552 /* Unit present? */ 553 if ((dtp->tp_data[unit] & TWE_PARAM_UNITSTATUS_Online) == 0) { 554 /* 555 * XXX Should we check to see if a device has been 556 * XXX attached at this index and detach it if it 557 * XXX has? ("rescan" semantics) 558 */ 559 rv = 0; 560 goto out; 561 } 562 563 rv = twe_param_get_2(sc, TWE_PARAM_UNITINFO + unit, 564 TWE_PARAM_UNITINFO_DescriptorSize, &dsize); 565 if (rv != 0) { 566 aprint_error_dev(&sc->sc_dv, "error %d fetching descriptor size " 567 "for unit %d\n", rv, unit); 568 goto out; 569 } 570 571 rv = twe_param_get(sc, TWE_PARAM_UNITINFO + unit, 572 TWE_PARAM_UNITINFO_Descriptor, dsize - 3, NULL, &atp); 573 if (rv != 0) { 574 aprint_error_dev(&sc->sc_dv, "error %d fetching array descriptor " 575 "for unit %d\n", rv, unit); 576 goto out; 577 } 578 579 ad = (struct twe_array_descriptor *)atp->tp_data; 580 newtype = ad->configuration; 581 newstripe = ad->stripe_size; 582 free(atp, M_DEVBUF); 583 584 rv = twe_param_get_4(sc, TWE_PARAM_UNITINFO + unit, 585 TWE_PARAM_UNITINFO_Capacity, &newsize); 586 if (rv != 0) { 587 aprint_error_dev(&sc->sc_dv, 588 "error %d fetching capacity for unit %d\n", 589 rv, unit); 590 goto out; 591 } 592 593 /* 594 * Have a device, so we need to attach it. If there is currently 595 * something sitting at the slot, and the parameters are different, 596 * then we detach the old device before attaching the new one. 597 */ 598 if (td->td_dev != NULL && 599 td->td_size == newsize && 600 td->td_type == newtype && 601 td->td_stripe == newstripe) { 602 /* Same as the old device; just keep using it. */ 603 rv = 0; 604 goto out; 605 } else if (td->td_dev != NULL) { 606 /* Detach the old device first. */ 607 (void) config_detach(td->td_dev, DETACH_FORCE); 608 td->td_dev = NULL; 609 } else if (td->td_size == 0) 610 sc->sc_nunits++; 611 612 /* 613 * Committed to the new array unit; assign its parameters and 614 * recompute the number of available command openings. 615 */ 616 td->td_size = newsize; 617 td->td_type = newtype; 618 td->td_stripe = newstripe; 619 twe_recompute_openings(sc); 620 621 twea.twea_unit = unit; 622 623 locs[TWECF_UNIT] = unit; 624 625 td->td_dev = config_found_sm_loc(&sc->sc_dv, "twe", locs, &twea, 626 twe_print, config_stdsubmatch); 627 628 rv = 0; 629 out: 630 free(dtp, M_DEVBUF); 631 return (rv); 632 } 633 634 static int 635 twe_del_unit(struct twe_softc *sc, int unit) 636 { 637 struct twe_drive *td; 638 639 if (unit < 0 || unit >= TWE_MAX_UNITS) 640 return (EINVAL); 641 642 td = &sc->sc_units[unit]; 643 if (td->td_size != 0) 644 sc->sc_nunits--; 645 td->td_size = 0; 646 td->td_type = 0; 647 td->td_stripe = 0; 648 if (td->td_dev != NULL) { 649 (void) config_detach(td->td_dev, DETACH_FORCE); 650 td->td_dev = NULL; 651 } 652 twe_recompute_openings(sc); 653 return (0); 654 } 655 656 /* 657 * Reset the controller. 658 * MUST BE CALLED AT splbio()! 659 */ 660 static int 661 twe_reset(struct twe_softc *sc) 662 { 663 uint16_t aen; 664 u_int status; 665 volatile u_int32_t junk; 666 int got, rv; 667 668 /* Issue a soft reset. */ 669 twe_outl(sc, TWE_REG_CTL, TWE_CTL_ISSUE_SOFT_RESET | 670 TWE_CTL_CLEAR_HOST_INTR | 671 TWE_CTL_CLEAR_ATTN_INTR | 672 TWE_CTL_MASK_CMD_INTR | 673 TWE_CTL_MASK_RESP_INTR | 674 TWE_CTL_CLEAR_ERROR_STS | 675 TWE_CTL_DISABLE_INTRS); 676 677 /* Wait for attention... */ 678 if (twe_status_wait(sc, TWE_STS_ATTN_INTR, 30)) { 679 aprint_error_dev(&sc->sc_dv, "timeout waiting for attention interrupt\n"); 680 return (-1); 681 } 682 683 /* ...and ACK it. */ 684 twe_outl(sc, TWE_REG_CTL, TWE_CTL_CLEAR_ATTN_INTR); 685 686 /* 687 * Pull AENs out of the controller; look for a soft reset AEN. 688 * Open code this, since we want to detect reset even if the 689 * queue for management tools is full. 690 * 691 * Note that since: 692 * - interrupts are blocked 693 * - we have reset the controller 694 * - acknowledged the pending ATTENTION 695 * that there is no way a pending asynchronous AEN fetch would 696 * finish, so clear the flag. 697 */ 698 sc->sc_flags &= ~TWEF_AEN; 699 for (got = 0;;) { 700 rv = twe_aen_get(sc, &aen); 701 if (rv != 0) 702 printf("%s: error %d while draining event queue\n", 703 device_xname(&sc->sc_dv), rv); 704 if (TWE_AEN_CODE(aen) == TWE_AEN_QUEUE_EMPTY) 705 break; 706 if (TWE_AEN_CODE(aen) == TWE_AEN_SOFT_RESET) 707 got = 1; 708 twe_aen_enqueue(sc, aen, 1); 709 } 710 711 if (!got) { 712 printf("%s: reset not reported\n", device_xname(&sc->sc_dv)); 713 return (-1); 714 } 715 716 /* Check controller status. */ 717 status = twe_inl(sc, TWE_REG_STS); 718 if (twe_status_check(sc, status)) { 719 printf("%s: controller errors detected\n", 720 device_xname(&sc->sc_dv)); 721 return (-1); 722 } 723 724 /* Drain the response queue. */ 725 for (;;) { 726 status = twe_inl(sc, TWE_REG_STS); 727 if (twe_status_check(sc, status) != 0) { 728 aprint_error_dev(&sc->sc_dv, "can't drain response queue\n"); 729 return (-1); 730 } 731 if ((status & TWE_STS_RESP_QUEUE_EMPTY) != 0) 732 break; 733 junk = twe_inl(sc, TWE_REG_RESP_QUEUE); 734 } 735 736 return (0); 737 } 738 739 /* 740 * Print autoconfiguration message for a sub-device. 741 */ 742 static int 743 twe_print(void *aux, const char *pnp) 744 { 745 struct twe_attach_args *twea; 746 747 twea = aux; 748 749 if (pnp != NULL) 750 aprint_normal("block device at %s", pnp); 751 aprint_normal(" unit %d", twea->twea_unit); 752 return (UNCONF); 753 } 754 755 /* 756 * Interrupt service routine. 757 */ 758 static int 759 twe_intr(void *arg) 760 { 761 struct twe_softc *sc; 762 u_int status; 763 int caught, rv; 764 765 sc = arg; 766 caught = 0; 767 status = twe_inl(sc, TWE_REG_STS); 768 twe_status_check(sc, status); 769 770 /* Host interrupts - purpose unknown. */ 771 if ((status & TWE_STS_HOST_INTR) != 0) { 772 #ifdef DEBUG 773 printf("%s: host interrupt\n", device_xname(&sc->sc_dv)); 774 #endif 775 twe_outl(sc, TWE_REG_CTL, TWE_CTL_CLEAR_HOST_INTR); 776 caught = 1; 777 } 778 779 /* 780 * Attention interrupts, signalled when a controller or child device 781 * state change has occurred. 782 */ 783 if ((status & TWE_STS_ATTN_INTR) != 0) { 784 rv = twe_aen_get(sc, NULL); 785 if (rv != 0) 786 aprint_error_dev(&sc->sc_dv, "unable to retrieve AEN (%d)\n", rv); 787 else 788 twe_outl(sc, TWE_REG_CTL, TWE_CTL_CLEAR_ATTN_INTR); 789 caught = 1; 790 } 791 792 /* 793 * Command interrupts, signalled when the controller can accept more 794 * commands. We don't use this; instead, we try to submit commands 795 * when we receive them, and when other commands have completed. 796 * Mask it so we don't get another one. 797 */ 798 if ((status & TWE_STS_CMD_INTR) != 0) { 799 #ifdef DEBUG 800 printf("%s: command interrupt\n", device_xname(&sc->sc_dv)); 801 #endif 802 twe_outl(sc, TWE_REG_CTL, TWE_CTL_MASK_CMD_INTR); 803 caught = 1; 804 } 805 806 if ((status & TWE_STS_RESP_INTR) != 0) { 807 twe_poll(sc); 808 caught = 1; 809 } 810 811 return (caught); 812 } 813 814 /* 815 * Fetch an AEN. Even though this is really like parameter 816 * retrieval, we handle this specially, because we issue this 817 * AEN retrieval command from interrupt context, and thus 818 * reserve a CCB for it to avoid resource shortage. 819 * 820 * XXX There are still potential resource shortages we could 821 * XXX encounter. Consider pre-allocating all AEN-related 822 * XXX resources. 823 * 824 * MUST BE CALLED AT splbio()! 825 */ 826 static int 827 twe_aen_get(struct twe_softc *sc, uint16_t *aenp) 828 { 829 struct twe_ccb *ccb; 830 struct twe_cmd *tc; 831 struct twe_param *tp; 832 int rv; 833 834 /* 835 * If we're already retrieving an AEN, just wait; another 836 * retrieval will be chained after the current one completes. 837 */ 838 if (sc->sc_flags & TWEF_AEN) { 839 /* 840 * It is a fatal software programming error to attempt 841 * to fetch an AEN synchronously when an AEN fetch is 842 * already pending. 843 */ 844 KASSERT(aenp == NULL); 845 return (0); 846 } 847 848 tp = malloc(TWE_SECTOR_SIZE, M_DEVBUF, M_NOWAIT); 849 if (tp == NULL) 850 return (ENOMEM); 851 852 ccb = twe_ccb_alloc(sc, 853 TWE_CCB_AEN | TWE_CCB_DATA_IN | TWE_CCB_DATA_OUT); 854 KASSERT(ccb != NULL); 855 856 ccb->ccb_data = tp; 857 ccb->ccb_datasize = TWE_SECTOR_SIZE; 858 ccb->ccb_tx.tx_handler = (aenp == NULL) ? twe_aen_handler : NULL; 859 ccb->ccb_tx.tx_context = tp; 860 ccb->ccb_tx.tx_dv = &sc->sc_dv; 861 862 tc = ccb->ccb_cmd; 863 tc->tc_size = 2; 864 tc->tc_opcode = TWE_OP_GET_PARAM | (tc->tc_size << 5); 865 tc->tc_unit = 0; 866 tc->tc_count = htole16(1); 867 868 /* Fill in the outbound parameter data. */ 869 tp->tp_table_id = htole16(TWE_PARAM_AEN); 870 tp->tp_param_id = TWE_PARAM_AEN_UnitCode; 871 tp->tp_param_size = 2; 872 873 /* Map the transfer. */ 874 if ((rv = twe_ccb_map(sc, ccb)) != 0) { 875 twe_ccb_free(sc, ccb); 876 goto done; 877 } 878 879 /* Enqueue the command and wait. */ 880 if (aenp != NULL) { 881 rv = twe_ccb_poll(sc, ccb, 5); 882 twe_ccb_unmap(sc, ccb); 883 twe_ccb_free(sc, ccb); 884 if (rv == 0) 885 *aenp = le16toh(*(uint16_t *)tp->tp_data); 886 free(tp, M_DEVBUF); 887 } else { 888 sc->sc_flags |= TWEF_AEN; 889 twe_ccb_enqueue(sc, ccb); 890 rv = 0; 891 } 892 893 done: 894 return (rv); 895 } 896 897 /* 898 * Handle an AEN returned by the controller. 899 * MUST BE CALLED AT splbio()! 900 */ 901 static void 902 twe_aen_handler(struct twe_ccb *ccb, int error) 903 { 904 struct twe_softc *sc; 905 struct twe_param *tp; 906 uint16_t aen; 907 int rv; 908 909 sc = device_private(ccb->ccb_tx.tx_dv); 910 tp = ccb->ccb_tx.tx_context; 911 twe_ccb_unmap(sc, ccb); 912 913 sc->sc_flags &= ~TWEF_AEN; 914 915 if (error) { 916 aprint_error_dev(&sc->sc_dv, "error retrieving AEN\n"); 917 aen = TWE_AEN_QUEUE_EMPTY; 918 } else 919 aen = le16toh(*(u_int16_t *)tp->tp_data); 920 free(tp, M_DEVBUF); 921 twe_ccb_free(sc, ccb); 922 923 if (TWE_AEN_CODE(aen) == TWE_AEN_QUEUE_EMPTY) { 924 twe_outl(sc, TWE_REG_CTL, TWE_CTL_CLEAR_ATTN_INTR); 925 return; 926 } 927 928 twe_aen_enqueue(sc, aen, 0); 929 930 /* 931 * Chain another retrieval in case interrupts have been 932 * coalesced. 933 */ 934 rv = twe_aen_get(sc, NULL); 935 if (rv != 0) 936 aprint_error_dev(&sc->sc_dv, "unable to retrieve AEN (%d)\n", rv); 937 } 938 939 static void 940 twe_aen_enqueue(struct twe_softc *sc, uint16_t aen, int quiet) 941 { 942 const char *str, *msg; 943 int s, next, nextnext, level; 944 945 /* 946 * First report the AEN on the console. Maybe. 947 */ 948 if (! quiet) { 949 str = twe_describe_code(twe_table_aen, TWE_AEN_CODE(aen)); 950 if (str == NULL) { 951 aprint_error_dev(&sc->sc_dv, "unknown AEN 0x%04x\n", aen); 952 } else { 953 msg = str + 3; 954 switch (str[1]) { 955 case 'E': level = LOG_EMERG; break; 956 case 'a': level = LOG_ALERT; break; 957 case 'c': level = LOG_CRIT; break; 958 case 'e': level = LOG_ERR; break; 959 case 'w': level = LOG_WARNING; break; 960 case 'n': level = LOG_NOTICE; break; 961 case 'i': level = LOG_INFO; break; 962 case 'd': level = LOG_DEBUG; break; 963 default: 964 /* Don't use syslog. */ 965 level = -1; 966 } 967 968 if (level < 0) { 969 switch (str[0]) { 970 case 'u': 971 case 'p': 972 printf("%s: %s %d: %s\n", 973 device_xname(&sc->sc_dv), 974 str[0] == 'u' ? "unit" : "port", 975 TWE_AEN_UNIT(aen), msg); 976 break; 977 978 default: 979 printf("%s: %s\n", 980 device_xname(&sc->sc_dv), msg); 981 } 982 } else { 983 switch (str[0]) { 984 case 'u': 985 case 'p': 986 log(level, "%s: %s %d: %s\n", 987 device_xname(&sc->sc_dv), 988 str[0] == 'u' ? "unit" : "port", 989 TWE_AEN_UNIT(aen), msg); 990 break; 991 992 default: 993 log(level, "%s: %s\n", 994 device_xname(&sc->sc_dv), msg); 995 } 996 } 997 } 998 } 999 1000 /* Now enqueue the AEN for mangement tools. */ 1001 s = splbio(); 1002 1003 next = (sc->sc_aen_head + 1) % TWE_AEN_Q_LENGTH; 1004 nextnext = (sc->sc_aen_head + 2) % TWE_AEN_Q_LENGTH; 1005 1006 /* 1007 * If this is the last free slot, then queue up a "queue 1008 * full" message. 1009 */ 1010 if (nextnext == sc->sc_aen_tail) 1011 aen = TWE_AEN_QUEUE_FULL; 1012 1013 if (next != sc->sc_aen_tail) { 1014 sc->sc_aen_queue[sc->sc_aen_head] = aen; 1015 sc->sc_aen_head = next; 1016 } 1017 1018 if (sc->sc_flags & TWEF_AENQ_WAIT) { 1019 sc->sc_flags &= ~TWEF_AENQ_WAIT; 1020 wakeup(&sc->sc_aen_queue); 1021 } 1022 1023 splx(s); 1024 } 1025 1026 /* NOTE: Must be called at splbio(). */ 1027 static uint16_t 1028 twe_aen_dequeue(struct twe_softc *sc) 1029 { 1030 uint16_t aen; 1031 1032 if (sc->sc_aen_tail == sc->sc_aen_head) 1033 aen = TWE_AEN_QUEUE_EMPTY; 1034 else { 1035 aen = sc->sc_aen_queue[sc->sc_aen_tail]; 1036 sc->sc_aen_tail = (sc->sc_aen_tail + 1) % TWE_AEN_Q_LENGTH; 1037 } 1038 1039 return (aen); 1040 } 1041 1042 /* 1043 * These are short-hand functions that execute TWE_OP_GET_PARAM to 1044 * fetch 1, 2, and 4 byte parameter values, respectively. 1045 */ 1046 int 1047 twe_param_get_1(struct twe_softc *sc, int table_id, int param_id, 1048 uint8_t *valp) 1049 { 1050 struct twe_param *tp; 1051 int rv; 1052 1053 rv = twe_param_get(sc, table_id, param_id, 1, NULL, &tp); 1054 if (rv != 0) 1055 return (rv); 1056 *valp = *(uint8_t *)tp->tp_data; 1057 free(tp, M_DEVBUF); 1058 return (0); 1059 } 1060 1061 int 1062 twe_param_get_2(struct twe_softc *sc, int table_id, int param_id, 1063 uint16_t *valp) 1064 { 1065 struct twe_param *tp; 1066 int rv; 1067 1068 rv = twe_param_get(sc, table_id, param_id, 2, NULL, &tp); 1069 if (rv != 0) 1070 return (rv); 1071 *valp = le16toh(*(uint16_t *)tp->tp_data); 1072 free(tp, M_DEVBUF); 1073 return (0); 1074 } 1075 1076 int 1077 twe_param_get_4(struct twe_softc *sc, int table_id, int param_id, 1078 uint32_t *valp) 1079 { 1080 struct twe_param *tp; 1081 int rv; 1082 1083 rv = twe_param_get(sc, table_id, param_id, 4, NULL, &tp); 1084 if (rv != 0) 1085 return (rv); 1086 *valp = le32toh(*(uint32_t *)tp->tp_data); 1087 free(tp, M_DEVBUF); 1088 return (0); 1089 } 1090 1091 /* 1092 * Execute a TWE_OP_GET_PARAM command. If a callback function is provided, 1093 * it will be called with generated context when the command has completed. 1094 * If no callback is provided, the command will be executed synchronously 1095 * and a pointer to a buffer containing the data returned. 1096 * 1097 * The caller or callback is responsible for freeing the buffer. 1098 * 1099 * NOTE: We assume we can sleep here to wait for a CCB to become available. 1100 */ 1101 int 1102 twe_param_get(struct twe_softc *sc, int table_id, int param_id, size_t size, 1103 void (*func)(struct twe_ccb *, int), struct twe_param **pbuf) 1104 { 1105 struct twe_ccb *ccb; 1106 struct twe_cmd *tc; 1107 struct twe_param *tp; 1108 int rv, s; 1109 1110 tp = malloc(TWE_SECTOR_SIZE, M_DEVBUF, M_NOWAIT); 1111 if (tp == NULL) 1112 return ENOMEM; 1113 1114 ccb = twe_ccb_alloc_wait(sc, TWE_CCB_DATA_IN | TWE_CCB_DATA_OUT); 1115 KASSERT(ccb != NULL); 1116 1117 ccb->ccb_data = tp; 1118 ccb->ccb_datasize = TWE_SECTOR_SIZE; 1119 ccb->ccb_tx.tx_handler = func; 1120 ccb->ccb_tx.tx_context = tp; 1121 ccb->ccb_tx.tx_dv = &sc->sc_dv; 1122 1123 tc = ccb->ccb_cmd; 1124 tc->tc_size = 2; 1125 tc->tc_opcode = TWE_OP_GET_PARAM | (tc->tc_size << 5); 1126 tc->tc_unit = 0; 1127 tc->tc_count = htole16(1); 1128 1129 /* Fill in the outbound parameter data. */ 1130 tp->tp_table_id = htole16(table_id); 1131 tp->tp_param_id = param_id; 1132 tp->tp_param_size = size; 1133 1134 /* Map the transfer. */ 1135 if ((rv = twe_ccb_map(sc, ccb)) != 0) { 1136 twe_ccb_free(sc, ccb); 1137 goto done; 1138 } 1139 1140 /* Submit the command and either wait or let the callback handle it. */ 1141 if (func == NULL) { 1142 s = splbio(); 1143 rv = twe_ccb_poll(sc, ccb, 5); 1144 twe_ccb_unmap(sc, ccb); 1145 twe_ccb_free(sc, ccb); 1146 splx(s); 1147 } else { 1148 #ifdef DEBUG 1149 if (pbuf != NULL) 1150 panic("both func and pbuf defined"); 1151 #endif 1152 twe_ccb_enqueue(sc, ccb); 1153 return 0; 1154 } 1155 1156 done: 1157 if (pbuf == NULL || rv != 0) 1158 free(tp, M_DEVBUF); 1159 else if (pbuf != NULL && rv == 0) 1160 *pbuf = tp; 1161 return rv; 1162 } 1163 1164 /* 1165 * Execute a TWE_OP_SET_PARAM command. 1166 * 1167 * NOTE: We assume we can sleep here to wait for a CCB to become available. 1168 */ 1169 static int 1170 twe_param_set(struct twe_softc *sc, int table_id, int param_id, size_t size, 1171 void *sbuf) 1172 { 1173 struct twe_ccb *ccb; 1174 struct twe_cmd *tc; 1175 struct twe_param *tp; 1176 int rv, s; 1177 1178 tp = malloc(TWE_SECTOR_SIZE, M_DEVBUF, M_NOWAIT); 1179 if (tp == NULL) 1180 return ENOMEM; 1181 1182 ccb = twe_ccb_alloc_wait(sc, TWE_CCB_DATA_IN | TWE_CCB_DATA_OUT); 1183 KASSERT(ccb != NULL); 1184 1185 ccb->ccb_data = tp; 1186 ccb->ccb_datasize = TWE_SECTOR_SIZE; 1187 ccb->ccb_tx.tx_handler = 0; 1188 ccb->ccb_tx.tx_context = tp; 1189 ccb->ccb_tx.tx_dv = &sc->sc_dv; 1190 1191 tc = ccb->ccb_cmd; 1192 tc->tc_size = 2; 1193 tc->tc_opcode = TWE_OP_SET_PARAM | (tc->tc_size << 5); 1194 tc->tc_unit = 0; 1195 tc->tc_count = htole16(1); 1196 1197 /* Fill in the outbound parameter data. */ 1198 tp->tp_table_id = htole16(table_id); 1199 tp->tp_param_id = param_id; 1200 tp->tp_param_size = size; 1201 memcpy(tp->tp_data, sbuf, size); 1202 1203 /* Map the transfer. */ 1204 if ((rv = twe_ccb_map(sc, ccb)) != 0) { 1205 twe_ccb_free(sc, ccb); 1206 goto done; 1207 } 1208 1209 /* Submit the command and wait. */ 1210 s = splbio(); 1211 rv = twe_ccb_poll(sc, ccb, 5); 1212 twe_ccb_unmap(sc, ccb); 1213 twe_ccb_free(sc, ccb); 1214 splx(s); 1215 done: 1216 free(tp, M_DEVBUF); 1217 return (rv); 1218 } 1219 1220 /* 1221 * Execute a TWE_OP_INIT_CONNECTION command. Return non-zero on error. 1222 * Must be called with interrupts blocked. 1223 */ 1224 static int 1225 twe_init_connection(struct twe_softc *sc) 1226 { 1227 struct twe_ccb *ccb; 1228 struct twe_cmd *tc; 1229 int rv; 1230 1231 if ((ccb = twe_ccb_alloc(sc, 0)) == NULL) 1232 return (EAGAIN); 1233 1234 /* Build the command. */ 1235 tc = ccb->ccb_cmd; 1236 tc->tc_size = 3; 1237 tc->tc_opcode = TWE_OP_INIT_CONNECTION; 1238 tc->tc_unit = 0; 1239 tc->tc_count = htole16(TWE_MAX_CMDS); 1240 tc->tc_args.init_connection.response_queue_pointer = 0; 1241 1242 /* Submit the command for immediate execution. */ 1243 rv = twe_ccb_poll(sc, ccb, 5); 1244 twe_ccb_free(sc, ccb); 1245 return (rv); 1246 } 1247 1248 /* 1249 * Poll the controller for completed commands. Must be called with 1250 * interrupts blocked. 1251 */ 1252 static void 1253 twe_poll(struct twe_softc *sc) 1254 { 1255 struct twe_ccb *ccb; 1256 int found; 1257 u_int status, cmdid; 1258 1259 found = 0; 1260 1261 for (;;) { 1262 status = twe_inl(sc, TWE_REG_STS); 1263 twe_status_check(sc, status); 1264 1265 if ((status & TWE_STS_RESP_QUEUE_EMPTY)) 1266 break; 1267 1268 found = 1; 1269 cmdid = twe_inl(sc, TWE_REG_RESP_QUEUE); 1270 cmdid = (cmdid & TWE_RESP_MASK) >> TWE_RESP_SHIFT; 1271 if (cmdid >= TWE_MAX_QUEUECNT) { 1272 aprint_error_dev(&sc->sc_dv, "bad cmdid %d\n", cmdid); 1273 continue; 1274 } 1275 1276 ccb = sc->sc_ccbs + cmdid; 1277 if ((ccb->ccb_flags & TWE_CCB_ACTIVE) == 0) { 1278 printf("%s: CCB for cmdid %d not active\n", 1279 device_xname(&sc->sc_dv), cmdid); 1280 continue; 1281 } 1282 ccb->ccb_flags ^= TWE_CCB_COMPLETE | TWE_CCB_ACTIVE; 1283 1284 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, 1285 (char *)ccb->ccb_cmd - (char *)sc->sc_cmds, 1286 sizeof(struct twe_cmd), 1287 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1288 1289 /* Pass notification to upper layers. */ 1290 if (ccb->ccb_tx.tx_handler != NULL) 1291 (*ccb->ccb_tx.tx_handler)(ccb, 1292 ccb->ccb_cmd->tc_status != 0 ? EIO : 0); 1293 } 1294 1295 /* If any commands have completed, run the software queue. */ 1296 if (found) 1297 twe_ccb_enqueue(sc, NULL); 1298 } 1299 1300 /* 1301 * Wait for `status' to be set in the controller status register. Return 1302 * zero if found, non-zero if the operation timed out. 1303 */ 1304 static int 1305 twe_status_wait(struct twe_softc *sc, u_int32_t status, int timo) 1306 { 1307 1308 for (timo *= 10; timo != 0; timo--) { 1309 if ((twe_inl(sc, TWE_REG_STS) & status) == status) 1310 break; 1311 delay(100000); 1312 } 1313 1314 return (timo == 0); 1315 } 1316 1317 /* 1318 * Clear a PCI parity error. 1319 */ 1320 static void 1321 twe_clear_pci_parity_error(struct twe_softc *sc) 1322 { 1323 bus_space_write_4(sc->sc_iot, sc->sc_ioh, 0x0, TWE_CTL_CLEAR_PARITY_ERROR); 1324 1325 //FreeBSD: pci_write_config(sc->twe_dev, PCIR_STATUS, TWE_PCI_CLEAR_PARITY_ERROR, 2); 1326 } 1327 1328 1329 /* 1330 * Clear a PCI abort. 1331 */ 1332 static void 1333 twe_clear_pci_abort(struct twe_softc *sc) 1334 { 1335 bus_space_write_4(sc->sc_iot, sc->sc_ioh, 0x0, TWE_CTL_CLEAR_PCI_ABORT); 1336 1337 //FreeBSD: pci_write_config(sc->twe_dev, PCIR_STATUS, TWE_PCI_CLEAR_PCI_ABORT, 2); 1338 } 1339 1340 /* 1341 * Complain if the status bits aren't what we expect. 1342 */ 1343 static int 1344 twe_status_check(struct twe_softc *sc, u_int status) 1345 { 1346 int rv; 1347 1348 rv = 0; 1349 1350 if ((status & TWE_STS_EXPECTED_BITS) != TWE_STS_EXPECTED_BITS) { 1351 aprint_error_dev(&sc->sc_dv, "missing status bits: 0x%08x\n", 1352 status & ~TWE_STS_EXPECTED_BITS); 1353 rv = -1; 1354 } 1355 1356 if ((status & TWE_STS_UNEXPECTED_BITS) != 0) { 1357 aprint_error_dev(&sc->sc_dv, "unexpected status bits: 0x%08x\n", 1358 status & TWE_STS_UNEXPECTED_BITS); 1359 rv = -1; 1360 if (status & TWE_STS_PCI_PARITY_ERROR) { 1361 aprint_error_dev(&sc->sc_dv, "PCI parity error: Reseat card, move card " 1362 "or buggy device present.\n"); 1363 twe_clear_pci_parity_error(sc); 1364 } 1365 if (status & TWE_STS_PCI_ABORT) { 1366 aprint_error_dev(&sc->sc_dv, "PCI abort, clearing.\n"); 1367 twe_clear_pci_abort(sc); 1368 } 1369 } 1370 1371 return (rv); 1372 } 1373 1374 /* 1375 * Allocate and initialise a CCB. 1376 */ 1377 static inline void 1378 twe_ccb_init(struct twe_softc *sc, struct twe_ccb *ccb, int flags) 1379 { 1380 struct twe_cmd *tc; 1381 1382 ccb->ccb_tx.tx_handler = NULL; 1383 ccb->ccb_flags = flags; 1384 tc = ccb->ccb_cmd; 1385 tc->tc_status = 0; 1386 tc->tc_flags = 0; 1387 tc->tc_cmdid = ccb->ccb_cmdid; 1388 } 1389 1390 struct twe_ccb * 1391 twe_ccb_alloc(struct twe_softc *sc, int flags) 1392 { 1393 struct twe_ccb *ccb; 1394 int s; 1395 1396 s = splbio(); 1397 if (__predict_false((flags & TWE_CCB_AEN) != 0)) { 1398 /* Use the reserved CCB. */ 1399 ccb = sc->sc_ccbs; 1400 } else { 1401 /* Allocate a CCB and command block. */ 1402 if (__predict_false((ccb = 1403 SLIST_FIRST(&sc->sc_ccb_freelist)) == NULL)) { 1404 splx(s); 1405 return (NULL); 1406 } 1407 SLIST_REMOVE_HEAD(&sc->sc_ccb_freelist, ccb_chain.slist); 1408 } 1409 #ifdef DIAGNOSTIC 1410 if ((long)(ccb - sc->sc_ccbs) == 0 && (flags & TWE_CCB_AEN) == 0) 1411 panic("twe_ccb_alloc: got reserved CCB for non-AEN"); 1412 if ((ccb->ccb_flags & TWE_CCB_ALLOCED) != 0) 1413 panic("twe_ccb_alloc: CCB %ld already allocated", 1414 (long)(ccb - sc->sc_ccbs)); 1415 flags |= TWE_CCB_ALLOCED; 1416 #endif 1417 splx(s); 1418 1419 twe_ccb_init(sc, ccb, flags); 1420 return (ccb); 1421 } 1422 1423 struct twe_ccb * 1424 twe_ccb_alloc_wait(struct twe_softc *sc, int flags) 1425 { 1426 struct twe_ccb *ccb; 1427 int s; 1428 1429 KASSERT((flags & TWE_CCB_AEN) == 0); 1430 1431 s = splbio(); 1432 while (__predict_false((ccb = 1433 SLIST_FIRST(&sc->sc_ccb_freelist)) == NULL)) { 1434 sc->sc_flags |= TWEF_WAIT_CCB; 1435 (void) tsleep(&sc->sc_ccb_freelist, PRIBIO, "tweccb", 0); 1436 } 1437 SLIST_REMOVE_HEAD(&sc->sc_ccb_freelist, ccb_chain.slist); 1438 #ifdef DIAGNOSTIC 1439 if ((ccb->ccb_flags & TWE_CCB_ALLOCED) != 0) 1440 panic("twe_ccb_alloc_wait: CCB %ld already allocated", 1441 (long)(ccb - sc->sc_ccbs)); 1442 flags |= TWE_CCB_ALLOCED; 1443 #endif 1444 splx(s); 1445 1446 twe_ccb_init(sc, ccb, flags); 1447 return (ccb); 1448 } 1449 1450 /* 1451 * Free a CCB. 1452 */ 1453 void 1454 twe_ccb_free(struct twe_softc *sc, struct twe_ccb *ccb) 1455 { 1456 int s; 1457 1458 s = splbio(); 1459 if ((ccb->ccb_flags & TWE_CCB_AEN) == 0) { 1460 SLIST_INSERT_HEAD(&sc->sc_ccb_freelist, ccb, ccb_chain.slist); 1461 if (__predict_false((sc->sc_flags & TWEF_WAIT_CCB) != 0)) { 1462 sc->sc_flags &= ~TWEF_WAIT_CCB; 1463 wakeup(&sc->sc_ccb_freelist); 1464 } 1465 } 1466 ccb->ccb_flags = 0; 1467 splx(s); 1468 } 1469 1470 /* 1471 * Map the specified CCB's command block and data buffer (if any) into 1472 * controller visible space. Perform DMA synchronisation. 1473 */ 1474 int 1475 twe_ccb_map(struct twe_softc *sc, struct twe_ccb *ccb) 1476 { 1477 struct twe_cmd *tc; 1478 int flags, nsegs, i, s, rv, rc; 1479 void *data; 1480 1481 /* 1482 * The data as a whole must be 512-byte aligned. 1483 */ 1484 if (((u_long)ccb->ccb_data & (TWE_ALIGNMENT - 1)) != 0) { 1485 s = splvm(); 1486 /* XXX */ 1487 rc = uvm_km_kmem_alloc(kmem_va_arena, 1488 ccb->ccb_datasize, (VM_NOSLEEP | VM_INSTANTFIT), 1489 (vmem_addr_t *)&ccb->ccb_abuf); 1490 splx(s); 1491 data = (void *)ccb->ccb_abuf; 1492 if ((ccb->ccb_flags & TWE_CCB_DATA_OUT) != 0) 1493 memcpy(data, ccb->ccb_data, ccb->ccb_datasize); 1494 } else { 1495 ccb->ccb_abuf = (vaddr_t)0; 1496 data = ccb->ccb_data; 1497 } 1498 1499 /* 1500 * Map the data buffer into bus space and build the S/G list. 1501 */ 1502 rv = bus_dmamap_load(sc->sc_dmat, ccb->ccb_dmamap_xfer, data, 1503 ccb->ccb_datasize, NULL, BUS_DMA_NOWAIT | BUS_DMA_STREAMING | 1504 ((ccb->ccb_flags & TWE_CCB_DATA_IN) ? 1505 BUS_DMA_READ : BUS_DMA_WRITE)); 1506 if (rv != 0) { 1507 if (ccb->ccb_abuf != (vaddr_t)0) { 1508 s = splvm(); 1509 /* XXX */ 1510 uvm_km_kmem_free(kmem_va_arena, ccb->ccb_abuf, 1511 ccb->ccb_datasize); 1512 splx(s); 1513 } 1514 return (rv); 1515 } 1516 1517 nsegs = ccb->ccb_dmamap_xfer->dm_nsegs; 1518 tc = ccb->ccb_cmd; 1519 tc->tc_size += 2 * nsegs; 1520 1521 /* The location of the S/G list is dependent upon command type. */ 1522 switch (tc->tc_opcode >> 5) { 1523 case 2: 1524 for (i = 0; i < nsegs; i++) { 1525 tc->tc_args.param.sgl[i].tsg_address = 1526 htole32(ccb->ccb_dmamap_xfer->dm_segs[i].ds_addr); 1527 tc->tc_args.param.sgl[i].tsg_length = 1528 htole32(ccb->ccb_dmamap_xfer->dm_segs[i].ds_len); 1529 } 1530 /* XXX Needed? */ 1531 for (; i < TWE_SG_SIZE; i++) { 1532 tc->tc_args.param.sgl[i].tsg_address = 0; 1533 tc->tc_args.param.sgl[i].tsg_length = 0; 1534 } 1535 break; 1536 case 3: 1537 for (i = 0; i < nsegs; i++) { 1538 tc->tc_args.io.sgl[i].tsg_address = 1539 htole32(ccb->ccb_dmamap_xfer->dm_segs[i].ds_addr); 1540 tc->tc_args.io.sgl[i].tsg_length = 1541 htole32(ccb->ccb_dmamap_xfer->dm_segs[i].ds_len); 1542 } 1543 /* XXX Needed? */ 1544 for (; i < TWE_SG_SIZE; i++) { 1545 tc->tc_args.io.sgl[i].tsg_address = 0; 1546 tc->tc_args.io.sgl[i].tsg_length = 0; 1547 } 1548 break; 1549 default: 1550 /* 1551 * In all likelihood, this is a command passed from 1552 * management tools in userspace where no S/G list is 1553 * necessary because no data is being passed. 1554 */ 1555 break; 1556 } 1557 1558 if ((ccb->ccb_flags & TWE_CCB_DATA_IN) != 0) 1559 flags = BUS_DMASYNC_PREREAD; 1560 else 1561 flags = 0; 1562 if ((ccb->ccb_flags & TWE_CCB_DATA_OUT) != 0) 1563 flags |= BUS_DMASYNC_PREWRITE; 1564 1565 bus_dmamap_sync(sc->sc_dmat, ccb->ccb_dmamap_xfer, 0, 1566 ccb->ccb_datasize, flags); 1567 return (0); 1568 } 1569 1570 /* 1571 * Unmap the specified CCB's command block and data buffer (if any) and 1572 * perform DMA synchronisation. 1573 */ 1574 void 1575 twe_ccb_unmap(struct twe_softc *sc, struct twe_ccb *ccb) 1576 { 1577 int flags, s; 1578 1579 if ((ccb->ccb_flags & TWE_CCB_DATA_IN) != 0) 1580 flags = BUS_DMASYNC_POSTREAD; 1581 else 1582 flags = 0; 1583 if ((ccb->ccb_flags & TWE_CCB_DATA_OUT) != 0) 1584 flags |= BUS_DMASYNC_POSTWRITE; 1585 1586 bus_dmamap_sync(sc->sc_dmat, ccb->ccb_dmamap_xfer, 0, 1587 ccb->ccb_datasize, flags); 1588 bus_dmamap_unload(sc->sc_dmat, ccb->ccb_dmamap_xfer); 1589 1590 if (ccb->ccb_abuf != (vaddr_t)0) { 1591 if ((ccb->ccb_flags & TWE_CCB_DATA_IN) != 0) 1592 memcpy(ccb->ccb_data, (void *)ccb->ccb_abuf, 1593 ccb->ccb_datasize); 1594 s = splvm(); 1595 /* XXX */ 1596 uvm_km_kmem_free(kmem_va_arena, ccb->ccb_abuf, 1597 ccb->ccb_datasize); 1598 splx(s); 1599 } 1600 } 1601 1602 /* 1603 * Submit a command to the controller and poll on completion. Return 1604 * non-zero on timeout (but don't check status, as some command types don't 1605 * return status). Must be called with interrupts blocked. 1606 */ 1607 int 1608 twe_ccb_poll(struct twe_softc *sc, struct twe_ccb *ccb, int timo) 1609 { 1610 int rv; 1611 1612 if ((rv = twe_ccb_submit(sc, ccb)) != 0) 1613 return (rv); 1614 1615 for (timo *= 1000; timo != 0; timo--) { 1616 twe_poll(sc); 1617 if ((ccb->ccb_flags & TWE_CCB_COMPLETE) != 0) 1618 break; 1619 DELAY(100); 1620 } 1621 1622 return (timo == 0); 1623 } 1624 1625 /* 1626 * If a CCB is specified, enqueue it. Pull CCBs off the software queue in 1627 * the order that they were enqueued and try to submit their command blocks 1628 * to the controller for execution. 1629 */ 1630 void 1631 twe_ccb_enqueue(struct twe_softc *sc, struct twe_ccb *ccb) 1632 { 1633 int s; 1634 1635 s = splbio(); 1636 1637 if (ccb != NULL) 1638 SIMPLEQ_INSERT_TAIL(&sc->sc_ccb_queue, ccb, ccb_chain.simpleq); 1639 1640 while ((ccb = SIMPLEQ_FIRST(&sc->sc_ccb_queue)) != NULL) { 1641 if (twe_ccb_submit(sc, ccb)) 1642 break; 1643 SIMPLEQ_REMOVE_HEAD(&sc->sc_ccb_queue, ccb_chain.simpleq); 1644 } 1645 1646 splx(s); 1647 } 1648 1649 /* 1650 * Submit the command block associated with the specified CCB to the 1651 * controller for execution. Must be called with interrupts blocked. 1652 */ 1653 int 1654 twe_ccb_submit(struct twe_softc *sc, struct twe_ccb *ccb) 1655 { 1656 bus_addr_t pa; 1657 int rv; 1658 u_int status; 1659 1660 /* Check to see if we can post a command. */ 1661 status = twe_inl(sc, TWE_REG_STS); 1662 twe_status_check(sc, status); 1663 1664 if ((status & TWE_STS_CMD_QUEUE_FULL) == 0) { 1665 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, 1666 (char *)ccb->ccb_cmd - (char *)sc->sc_cmds, 1667 sizeof(struct twe_cmd), 1668 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 1669 #ifdef DIAGNOSTIC 1670 if ((ccb->ccb_flags & TWE_CCB_ALLOCED) == 0) 1671 panic("%s: CCB %ld not ALLOCED\n", 1672 device_xname(&sc->sc_dv), (long)(ccb - sc->sc_ccbs)); 1673 #endif 1674 ccb->ccb_flags |= TWE_CCB_ACTIVE; 1675 pa = sc->sc_cmds_paddr + 1676 ccb->ccb_cmdid * sizeof(struct twe_cmd); 1677 twe_outl(sc, TWE_REG_CMD_QUEUE, (u_int32_t)pa); 1678 rv = 0; 1679 } else 1680 rv = EBUSY; 1681 1682 return (rv); 1683 } 1684 1685 1686 /* 1687 * Accept an open operation on the control device. 1688 */ 1689 static int 1690 tweopen(dev_t dev, int flag, int mode, struct lwp *l) 1691 { 1692 struct twe_softc *twe; 1693 1694 if ((twe = device_lookup_private(&twe_cd, minor(dev))) == NULL) 1695 return (ENXIO); 1696 if ((twe->sc_flags & TWEF_OPEN) != 0) 1697 return (EBUSY); 1698 1699 twe->sc_flags |= TWEF_OPEN; 1700 return (0); 1701 } 1702 1703 /* 1704 * Accept the last close on the control device. 1705 */ 1706 static int 1707 tweclose(dev_t dev, int flag, int mode, 1708 struct lwp *l) 1709 { 1710 struct twe_softc *twe; 1711 1712 twe = device_lookup_private(&twe_cd, minor(dev)); 1713 twe->sc_flags &= ~TWEF_OPEN; 1714 return (0); 1715 } 1716 1717 void 1718 twe_ccb_wait_handler(struct twe_ccb *ccb, int error) 1719 { 1720 1721 /* Just wake up the sleeper. */ 1722 wakeup(ccb); 1723 } 1724 1725 /* 1726 * Handle control operations. 1727 */ 1728 static int 1729 tweioctl(dev_t dev, u_long cmd, void *data, int flag, 1730 struct lwp *l) 1731 { 1732 struct twe_softc *twe; 1733 struct twe_ccb *ccb; 1734 struct twe_param *param; 1735 struct twe_usercommand *tu; 1736 struct twe_paramcommand *tp; 1737 struct twe_drivecommand *td; 1738 void *pdata = NULL; 1739 int s, error = 0; 1740 u_int8_t cmdid; 1741 1742 twe = device_lookup_private(&twe_cd, minor(dev)); 1743 tu = (struct twe_usercommand *)data; 1744 tp = (struct twe_paramcommand *)data; 1745 td = (struct twe_drivecommand *)data; 1746 1747 /* This is intended to be compatible with the FreeBSD interface. */ 1748 switch (cmd) { 1749 case TWEIO_COMMAND: 1750 error = kauth_authorize_device_passthru(l->l_cred, dev, 1751 KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_ALL, data); 1752 if (error) 1753 return (error); 1754 1755 /* XXX mutex */ 1756 if (tu->tu_size > 0) { 1757 /* 1758 * XXX Handle > TWE_SECTOR_SIZE? Let's see if 1759 * it's really necessary, first. 1760 */ 1761 if (tu->tu_size > TWE_SECTOR_SIZE) { 1762 #ifdef TWE_DEBUG 1763 printf("%s: TWEIO_COMMAND: tu_size = %zu\n", 1764 device_xname(&twe->sc_dv), tu->tu_size); 1765 #endif 1766 return EINVAL; 1767 } 1768 pdata = malloc(TWE_SECTOR_SIZE, M_DEVBUF, M_WAITOK); 1769 error = copyin(tu->tu_data, pdata, tu->tu_size); 1770 if (error != 0) 1771 goto done; 1772 ccb = twe_ccb_alloc_wait(twe, 1773 TWE_CCB_DATA_IN | TWE_CCB_DATA_OUT); 1774 KASSERT(ccb != NULL); 1775 ccb->ccb_data = pdata; 1776 ccb->ccb_datasize = TWE_SECTOR_SIZE; 1777 } else { 1778 ccb = twe_ccb_alloc_wait(twe, 0); 1779 KASSERT(ccb != NULL); 1780 } 1781 1782 ccb->ccb_tx.tx_handler = twe_ccb_wait_handler; 1783 ccb->ccb_tx.tx_context = NULL; 1784 ccb->ccb_tx.tx_dv = &twe->sc_dv; 1785 1786 cmdid = ccb->ccb_cmdid; 1787 memcpy(ccb->ccb_cmd, &tu->tu_cmd, sizeof(struct twe_cmd)); 1788 ccb->ccb_cmd->tc_cmdid = cmdid; 1789 1790 /* Map the transfer. */ 1791 if ((error = twe_ccb_map(twe, ccb)) != 0) { 1792 twe_ccb_free(twe, ccb); 1793 goto done; 1794 } 1795 1796 /* Submit the command and wait up to 1 minute. */ 1797 error = 0; 1798 twe_ccb_enqueue(twe, ccb); 1799 s = splbio(); 1800 while ((ccb->ccb_flags & TWE_CCB_COMPLETE) == 0) 1801 if ((error = tsleep(ccb, PRIBIO, "tweioctl", 1802 60 * hz)) != 0) 1803 break; 1804 splx(s); 1805 1806 /* Copy the command back to the ioctl argument. */ 1807 memcpy(&tu->tu_cmd, ccb->ccb_cmd, sizeof(struct twe_cmd)); 1808 #ifdef TWE_DEBUG 1809 printf("%s: TWEIO_COMMAND: tc_opcode = 0x%02x, " 1810 "tc_status = 0x%02x\n", device_xname(&twe->sc_dv), 1811 tu->tu_cmd.tc_opcode, tu->tu_cmd.tc_status); 1812 #endif 1813 1814 s = splbio(); 1815 twe_ccb_free(twe, ccb); 1816 splx(s); 1817 1818 if (tu->tu_size > 0) 1819 error = copyout(pdata, tu->tu_data, tu->tu_size); 1820 goto done; 1821 1822 case TWEIO_STATS: 1823 return (ENOENT); 1824 1825 case TWEIO_AEN_POLL: 1826 s = splbio(); 1827 *(u_int *)data = twe_aen_dequeue(twe); 1828 splx(s); 1829 return (0); 1830 1831 case TWEIO_AEN_WAIT: 1832 s = splbio(); 1833 while ((*(u_int *)data = 1834 twe_aen_dequeue(twe)) == TWE_AEN_QUEUE_EMPTY) { 1835 twe->sc_flags |= TWEF_AENQ_WAIT; 1836 error = tsleep(&twe->sc_aen_queue, PRIBIO | PCATCH, 1837 "tweaen", 0); 1838 if (error == EINTR) { 1839 splx(s); 1840 return (error); 1841 } 1842 } 1843 splx(s); 1844 return (0); 1845 1846 case TWEIO_GET_PARAM: 1847 error = twe_param_get(twe, tp->tp_table_id, tp->tp_param_id, 1848 tp->tp_size, 0, ¶m); 1849 if (error != 0) 1850 return (error); 1851 if (param->tp_param_size > tp->tp_size) { 1852 error = EFAULT; 1853 goto done; 1854 } 1855 error = copyout(param->tp_data, tp->tp_data, 1856 param->tp_param_size); 1857 free(param, M_DEVBUF); 1858 goto done; 1859 1860 case TWEIO_SET_PARAM: 1861 pdata = malloc(tp->tp_size, M_DEVBUF, M_WAITOK); 1862 if ((error = copyin(tp->tp_data, pdata, tp->tp_size)) != 0) 1863 goto done; 1864 error = twe_param_set(twe, tp->tp_table_id, tp->tp_param_id, 1865 tp->tp_size, pdata); 1866 goto done; 1867 1868 case TWEIO_RESET: 1869 s = splbio(); 1870 twe_reset(twe); 1871 splx(s); 1872 return (0); 1873 1874 case TWEIO_ADD_UNIT: 1875 /* XXX mutex */ 1876 return (twe_add_unit(twe, td->td_unit)); 1877 1878 case TWEIO_DEL_UNIT: 1879 /* XXX mutex */ 1880 return (twe_del_unit(twe, td->td_unit)); 1881 1882 default: 1883 return EINVAL; 1884 } 1885 done: 1886 if (pdata) 1887 free(pdata, M_DEVBUF); 1888 return error; 1889 } 1890 1891 const struct cdevsw twe_cdevsw = { 1892 tweopen, tweclose, noread, nowrite, tweioctl, 1893 nostop, notty, nopoll, nommap, nokqfilter, D_OTHER, 1894 }; 1895 1896 /* 1897 * Print some information about the controller 1898 */ 1899 static void 1900 twe_describe_controller(struct twe_softc *sc) 1901 { 1902 struct twe_param *p[6]; 1903 int i, rv = 0; 1904 uint32_t dsize; 1905 uint8_t ports; 1906 1907 ports = 0; 1908 1909 /* get the port count */ 1910 rv |= twe_param_get_1(sc, TWE_PARAM_CONTROLLER, 1911 TWE_PARAM_CONTROLLER_PortCount, &ports); 1912 1913 /* get version strings */ 1914 rv |= twe_param_get(sc, TWE_PARAM_VERSION, TWE_PARAM_VERSION_Mon, 1915 16, NULL, &p[0]); 1916 rv |= twe_param_get(sc, TWE_PARAM_VERSION, TWE_PARAM_VERSION_FW, 1917 16, NULL, &p[1]); 1918 rv |= twe_param_get(sc, TWE_PARAM_VERSION, TWE_PARAM_VERSION_BIOS, 1919 16, NULL, &p[2]); 1920 rv |= twe_param_get(sc, TWE_PARAM_VERSION, TWE_PARAM_VERSION_PCB, 1921 8, NULL, &p[3]); 1922 rv |= twe_param_get(sc, TWE_PARAM_VERSION, TWE_PARAM_VERSION_ATA, 1923 8, NULL, &p[4]); 1924 rv |= twe_param_get(sc, TWE_PARAM_VERSION, TWE_PARAM_VERSION_PCI, 1925 8, NULL, &p[5]); 1926 1927 if (rv) { 1928 /* some error occurred */ 1929 aprint_error_dev(&sc->sc_dv, "failed to fetch version information\n"); 1930 return; 1931 } 1932 1933 aprint_normal_dev(&sc->sc_dv, "%d ports, Firmware %.16s, BIOS %.16s\n", 1934 ports, p[1]->tp_data, p[2]->tp_data); 1935 1936 aprint_verbose_dev(&sc->sc_dv, "Monitor %.16s, PCB %.8s, Achip %.8s, Pchip %.8s\n", 1937 p[0]->tp_data, p[3]->tp_data, 1938 p[4]->tp_data, p[5]->tp_data); 1939 1940 free(p[0], M_DEVBUF); 1941 free(p[1], M_DEVBUF); 1942 free(p[2], M_DEVBUF); 1943 free(p[3], M_DEVBUF); 1944 free(p[4], M_DEVBUF); 1945 free(p[5], M_DEVBUF); 1946 1947 rv = twe_param_get(sc, TWE_PARAM_DRIVESUMMARY, 1948 TWE_PARAM_DRIVESUMMARY_Status, 16, NULL, &p[0]); 1949 if (rv) { 1950 aprint_error_dev(&sc->sc_dv, "failed to get drive status summary\n"); 1951 return; 1952 } 1953 for (i = 0; i < ports; i++) { 1954 if (p[0]->tp_data[i] != TWE_PARAM_DRIVESTATUS_Present) 1955 continue; 1956 rv = twe_param_get_4(sc, TWE_PARAM_DRIVEINFO + i, 1957 TWE_PARAM_DRIVEINFO_Size, &dsize); 1958 if (rv) { 1959 aprint_error_dev(&sc->sc_dv, 1960 "unable to get drive size for port %d\n", i); 1961 continue; 1962 } 1963 rv = twe_param_get(sc, TWE_PARAM_DRIVEINFO + i, 1964 TWE_PARAM_DRIVEINFO_Model, 40, NULL, &p[1]); 1965 if (rv) { 1966 aprint_error_dev(&sc->sc_dv, 1967 "unable to get drive model for port %d\n", i); 1968 continue; 1969 } 1970 aprint_verbose_dev(&sc->sc_dv, "port %d: %.40s %d MB\n", 1971 i, p[1]->tp_data, dsize / 2048); 1972 free(p[1], M_DEVBUF); 1973 } 1974 free(p[0], M_DEVBUF); 1975 } 1976