twe.c revision 1.84.16.1
1 /* $NetBSD: twe.c,v 1.84.16.1 2008/04/05 23:33:22 mjf 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /*- 40 * Copyright (c) 2000 Michael Smith 41 * Copyright (c) 2000 BSDi 42 * All rights reserved. 43 * 44 * Redistribution and use in source and binary forms, with or without 45 * modification, are permitted provided that the following conditions 46 * are met: 47 * 1. Redistributions of source code must retain the above copyright 48 * notice, this list of conditions and the following disclaimer. 49 * 2. Redistributions in binary form must reproduce the above copyright 50 * notice, this list of conditions and the following disclaimer in the 51 * documentation and/or other materials provided with the distribution. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 56 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 * 65 * from FreeBSD: twe.c,v 1.1 2000/05/24 23:35:23 msmith Exp 66 */ 67 68 /* 69 * Driver for the 3ware Escalade family of RAID controllers. 70 */ 71 72 #include <sys/cdefs.h> 73 __KERNEL_RCSID(0, "$NetBSD: twe.c,v 1.84.16.1 2008/04/05 23:33:22 mjf Exp $"); 74 75 #include <sys/param.h> 76 #include <sys/systm.h> 77 #include <sys/kernel.h> 78 #include <sys/device.h> 79 #include <sys/queue.h> 80 #include <sys/proc.h> 81 #include <sys/buf.h> 82 #include <sys/endian.h> 83 #include <sys/malloc.h> 84 #include <sys/conf.h> 85 #include <sys/disk.h> 86 #include <sys/sysctl.h> 87 #include <sys/syslog.h> 88 #include <sys/kauth.h> 89 90 #include <uvm/uvm_extern.h> 91 92 #include <sys/bswap.h> 93 #include <sys/bus.h> 94 95 #include <dev/pci/pcireg.h> 96 #include <dev/pci/pcivar.h> 97 #include <dev/pci/pcidevs.h> 98 #include <dev/pci/twereg.h> 99 #include <dev/pci/twevar.h> 100 #include <dev/pci/tweio.h> 101 102 #include "locators.h" 103 104 #define PCI_CBIO 0x10 105 106 static int twe_aen_get(struct twe_softc *, uint16_t *); 107 static void twe_aen_handler(struct twe_ccb *, int); 108 static void twe_aen_enqueue(struct twe_softc *sc, uint16_t, int); 109 static uint16_t twe_aen_dequeue(struct twe_softc *); 110 111 static void twe_attach(struct device *, struct device *, void *); 112 static int twe_init_connection(struct twe_softc *); 113 static int twe_intr(void *); 114 static int twe_match(struct device *, struct cfdata *, void *); 115 static int twe_param_set(struct twe_softc *, int, int, size_t, void *); 116 static void twe_poll(struct twe_softc *); 117 static int twe_print(void *, const char *); 118 static int twe_reset(struct twe_softc *); 119 static int twe_status_check(struct twe_softc *, u_int); 120 static int twe_status_wait(struct twe_softc *, u_int, int); 121 static void twe_describe_controller(struct twe_softc *); 122 static void twe_clear_pci_abort(struct twe_softc *sc); 123 static void twe_clear_pci_parity_error(struct twe_softc *sc); 124 125 static int twe_add_unit(struct twe_softc *, int); 126 static int twe_del_unit(struct twe_softc *, int); 127 static int twe_init_connection(struct twe_softc *); 128 129 static inline u_int32_t twe_inl(struct twe_softc *, int); 130 static inline void twe_outl(struct twe_softc *, int, u_int32_t); 131 132 static int tweopen(dev_t, int, int, struct lwp *); 133 static int tweclose(dev_t, int, int, struct lwp *); 134 static int tweioctl(dev_t, u_long, void *, int, struct lwp *); 135 136 extern struct cfdriver twe_cd; 137 138 CFATTACH_DECL(twe, sizeof(struct twe_softc), 139 twe_match, twe_attach, NULL, NULL); 140 141 const struct cdevsw twe_cdevsw = { 142 tweopen, tweclose, noread, nowrite, tweioctl, 143 nostop, notty, nopoll, nommap, nokqfilter, D_OTHER, 144 }; 145 146 /* FreeBSD driver revision for sysctl expected by the 3ware cli */ 147 const char twever[] = "1.50.01.002"; 148 149 /* 150 * Tables to convert numeric codes to strings. 151 */ 152 const struct twe_code_table twe_table_status[] = { 153 { 0x00, "successful completion" }, 154 155 /* info */ 156 { 0x42, "command in progress" }, 157 { 0x6c, "retrying interface CRC error from UDMA command" }, 158 159 /* warning */ 160 { 0x81, "redundant/inconsequential request ignored" }, 161 { 0x8e, "failed to write zeroes to LBA 0" }, 162 { 0x8f, "failed to profile TwinStor zones" }, 163 164 /* fatal */ 165 { 0xc1, "aborted due to system command or reconfiguration" }, 166 { 0xc4, "aborted" }, 167 { 0xc5, "access error" }, 168 { 0xc6, "access violation" }, 169 { 0xc7, "device failure" }, /* high byte may be port # */ 170 { 0xc8, "controller error" }, 171 { 0xc9, "timed out" }, 172 { 0xcb, "invalid unit number" }, 173 { 0xcf, "unit not available" }, 174 { 0xd2, "undefined opcode" }, 175 { 0xdb, "request incompatible with unit" }, 176 { 0xdc, "invalid request" }, 177 { 0xff, "firmware error, reset requested" }, 178 179 { 0, NULL } 180 }; 181 182 const struct twe_code_table twe_table_unitstate[] = { 183 { TWE_PARAM_UNITSTATUS_Normal, "Normal" }, 184 { TWE_PARAM_UNITSTATUS_Initialising, "Initializing" }, 185 { TWE_PARAM_UNITSTATUS_Degraded, "Degraded" }, 186 { TWE_PARAM_UNITSTATUS_Rebuilding, "Rebuilding" }, 187 { TWE_PARAM_UNITSTATUS_Verifying, "Verifying" }, 188 { TWE_PARAM_UNITSTATUS_Corrupt, "Corrupt" }, 189 { TWE_PARAM_UNITSTATUS_Missing, "Missing" }, 190 191 { 0, NULL } 192 }; 193 194 const struct twe_code_table twe_table_unittype[] = { 195 /* array descriptor configuration */ 196 { TWE_AD_CONFIG_RAID0, "RAID0" }, 197 { TWE_AD_CONFIG_RAID1, "RAID1" }, 198 { TWE_AD_CONFIG_TwinStor, "TwinStor" }, 199 { TWE_AD_CONFIG_RAID5, "RAID5" }, 200 { TWE_AD_CONFIG_RAID10, "RAID10" }, 201 { TWE_UD_CONFIG_JBOD, "JBOD" }, 202 203 { 0, NULL } 204 }; 205 206 const struct twe_code_table twe_table_stripedepth[] = { 207 { TWE_AD_STRIPE_4k, "4K" }, 208 { TWE_AD_STRIPE_8k, "8K" }, 209 { TWE_AD_STRIPE_16k, "16K" }, 210 { TWE_AD_STRIPE_32k, "32K" }, 211 { TWE_AD_STRIPE_64k, "64K" }, 212 { TWE_AD_STRIPE_128k, "128K" }, 213 { TWE_AD_STRIPE_256k, "256K" }, 214 { TWE_AD_STRIPE_512k, "512K" }, 215 { TWE_AD_STRIPE_1024k, "1024K" }, 216 217 { 0, NULL } 218 }; 219 220 /* 221 * Asynchronous event notification messages are qualified: 222 * a - not unit/port specific 223 * u - unit specific 224 * p - port specific 225 * 226 * They are further qualified with a severity: 227 * E - LOG_EMERG 228 * a - LOG_ALERT 229 * c - LOG_CRIT 230 * e - LOG_ERR 231 * w - LOG_WARNING 232 * n - LOG_NOTICE 233 * i - LOG_INFO 234 * d - LOG_DEBUG 235 * blank - just use printf 236 */ 237 const struct twe_code_table twe_table_aen[] = { 238 { 0x00, "a queue empty" }, 239 { 0x01, "a soft reset" }, 240 { 0x02, "uc degraded mode" }, 241 { 0x03, "aa controller error" }, 242 { 0x04, "uE rebuild fail" }, 243 { 0x05, "un rebuild done" }, 244 { 0x06, "ue incomplete unit" }, 245 { 0x07, "un initialization done" }, 246 { 0x08, "uw unclean shutdown detected" }, 247 { 0x09, "pe drive timeout" }, 248 { 0x0a, "pc drive error" }, 249 { 0x0b, "un rebuild started" }, 250 { 0x0c, "un initialization started" }, 251 { 0x0d, "ui logical unit deleted" }, 252 { 0x0f, "pc SMART threshold exceeded" }, 253 { 0x15, "a table undefined" }, /* XXX: Not in FreeBSD's table */ 254 { 0x21, "pe ATA UDMA downgrade" }, 255 { 0x22, "pi ATA UDMA upgrade" }, 256 { 0x23, "pw sector repair occurred" }, 257 { 0x24, "aa SBUF integrity check failure" }, 258 { 0x25, "pa lost cached write" }, 259 { 0x26, "pa drive ECC error detected" }, 260 { 0x27, "pe DCB checksum error" }, 261 { 0x28, "pn DCB unsupported version" }, 262 { 0x29, "ui verify started" }, 263 { 0x2a, "ua verify failed" }, 264 { 0x2b, "ui verify complete" }, 265 { 0x2c, "pw overwrote bad sector during rebuild" }, 266 { 0x2d, "pa encountered bad sector during rebuild" }, 267 { 0x2e, "pe replacement drive too small" }, 268 { 0x2f, "ue array not previously initialized" }, 269 { 0x30, "p drive not supported" }, 270 { 0xff, "a aen queue full" }, 271 272 { 0, NULL }, 273 }; 274 275 const char * 276 twe_describe_code(const struct twe_code_table *table, uint32_t code) 277 { 278 279 for (; table->string != NULL; table++) { 280 if (table->code == code) 281 return (table->string); 282 } 283 return (NULL); 284 } 285 286 static inline u_int32_t 287 twe_inl(struct twe_softc *sc, int off) 288 { 289 290 bus_space_barrier(sc->sc_iot, sc->sc_ioh, off, 4, 291 BUS_SPACE_BARRIER_WRITE | BUS_SPACE_BARRIER_READ); 292 return (bus_space_read_4(sc->sc_iot, sc->sc_ioh, off)); 293 } 294 295 static inline void 296 twe_outl(struct twe_softc *sc, int off, u_int32_t val) 297 { 298 299 bus_space_write_4(sc->sc_iot, sc->sc_ioh, off, val); 300 bus_space_barrier(sc->sc_iot, sc->sc_ioh, off, 4, 301 BUS_SPACE_BARRIER_WRITE); 302 } 303 304 /* 305 * Match a supported board. 306 */ 307 static int 308 twe_match(struct device *parent, struct cfdata *cfdata, 309 void *aux) 310 { 311 struct pci_attach_args *pa; 312 313 pa = aux; 314 315 return (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_3WARE && 316 (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_3WARE_ESCALADE || 317 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_3WARE_ESCALADE_ASIC)); 318 } 319 320 /* 321 * Attach a supported board. 322 * 323 * XXX This doesn't fail gracefully. 324 */ 325 static void 326 twe_attach(struct device *parent, struct device *self, void *aux) 327 { 328 struct pci_attach_args *pa; 329 struct twe_softc *sc; 330 pci_chipset_tag_t pc; 331 pci_intr_handle_t ih; 332 pcireg_t csr; 333 const char *intrstr; 334 int s, size, i, rv, rseg; 335 size_t max_segs, max_xfer; 336 bus_dma_segment_t seg; 337 struct ctlname ctlnames[] = CTL_NAMES; 338 const struct sysctlnode *node; 339 struct twe_cmd *tc; 340 struct twe_ccb *ccb; 341 int maj; 342 343 sc = (struct twe_softc *)self; 344 pa = aux; 345 pc = pa->pa_pc; 346 sc->sc_dmat = pa->pa_dmat; 347 SIMPLEQ_INIT(&sc->sc_ccb_queue); 348 SLIST_INIT(&sc->sc_ccb_freelist); 349 350 aprint_naive(": RAID controller\n"); 351 aprint_normal(": 3ware Escalade\n"); 352 353 354 if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0, 355 &sc->sc_iot, &sc->sc_ioh, NULL, NULL)) { 356 aprint_error("%s: can't map i/o space\n", sc->sc_dv.dv_xname); 357 return; 358 } 359 360 /* Enable the device. */ 361 csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 362 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 363 csr | PCI_COMMAND_MASTER_ENABLE); 364 365 /* Map and establish the interrupt. */ 366 if (pci_intr_map(pa, &ih)) { 367 aprint_error("%s: can't map interrupt\n", sc->sc_dv.dv_xname); 368 return; 369 } 370 371 intrstr = pci_intr_string(pc, ih); 372 sc->sc_ih = pci_intr_establish(pc, ih, IPL_BIO, twe_intr, sc); 373 if (sc->sc_ih == NULL) { 374 aprint_error("%s: can't establish interrupt%s%s\n", 375 sc->sc_dv.dv_xname, 376 (intrstr) ? " at " : "", 377 (intrstr) ? intrstr : ""); 378 return; 379 } 380 381 if (intrstr != NULL) 382 aprint_normal("%s: interrupting at %s\n", 383 sc->sc_dv.dv_xname, intrstr); 384 385 /* 386 * Allocate and initialise the command blocks and CCBs. 387 */ 388 size = sizeof(struct twe_cmd) * TWE_MAX_QUEUECNT; 389 390 if ((rv = bus_dmamem_alloc(sc->sc_dmat, size, PAGE_SIZE, 0, &seg, 1, 391 &rseg, BUS_DMA_NOWAIT)) != 0) { 392 aprint_error("%s: unable to allocate commands, rv = %d\n", 393 sc->sc_dv.dv_xname, rv); 394 return; 395 } 396 397 if ((rv = bus_dmamem_map(sc->sc_dmat, &seg, rseg, size, 398 (void **)&sc->sc_cmds, 399 BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) { 400 aprint_error("%s: unable to map commands, rv = %d\n", 401 sc->sc_dv.dv_xname, rv); 402 return; 403 } 404 405 if ((rv = bus_dmamap_create(sc->sc_dmat, size, size, 1, 0, 406 BUS_DMA_NOWAIT, &sc->sc_dmamap)) != 0) { 407 aprint_error("%s: unable to create command DMA map, rv = %d\n", 408 sc->sc_dv.dv_xname, rv); 409 return; 410 } 411 412 if ((rv = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap, sc->sc_cmds, 413 size, NULL, BUS_DMA_NOWAIT)) != 0) { 414 aprint_error("%s: unable to load command DMA map, rv = %d\n", 415 sc->sc_dv.dv_xname, rv); 416 return; 417 } 418 419 ccb = malloc(sizeof(*ccb) * TWE_MAX_QUEUECNT, M_DEVBUF, M_NOWAIT); 420 if (ccb == NULL) { 421 aprint_error("%s: unable to allocate memory for ccbs\n", 422 sc->sc_dv.dv_xname); 423 return; 424 } 425 426 sc->sc_cmds_paddr = sc->sc_dmamap->dm_segs[0].ds_addr; 427 memset(sc->sc_cmds, 0, size); 428 429 sc->sc_ccbs = ccb; 430 tc = (struct twe_cmd *)sc->sc_cmds; 431 max_segs = twe_get_maxsegs(); 432 max_xfer = twe_get_maxxfer(max_segs); 433 434 for (i = 0; i < TWE_MAX_QUEUECNT; i++, tc++, ccb++) { 435 ccb->ccb_cmd = tc; 436 ccb->ccb_cmdid = i; 437 ccb->ccb_flags = 0; 438 rv = bus_dmamap_create(sc->sc_dmat, max_xfer, 439 max_segs, PAGE_SIZE, 0, 440 BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, 441 &ccb->ccb_dmamap_xfer); 442 if (rv != 0) { 443 aprint_error("%s: can't create dmamap, rv = %d\n", 444 sc->sc_dv.dv_xname, rv); 445 return; 446 } 447 448 /* Save the first CCB for AEN retrieval. */ 449 if (i != 0) 450 SLIST_INSERT_HEAD(&sc->sc_ccb_freelist, ccb, 451 ccb_chain.slist); 452 } 453 454 /* Wait for the controller to become ready. */ 455 if (twe_status_wait(sc, TWE_STS_MICROCONTROLLER_READY, 6)) { 456 aprint_error("%s: microcontroller not ready\n", 457 sc->sc_dv.dv_xname); 458 return; 459 } 460 461 twe_outl(sc, TWE_REG_CTL, TWE_CTL_DISABLE_INTRS); 462 463 /* Reset the controller. */ 464 s = splbio(); 465 rv = twe_reset(sc); 466 splx(s); 467 if (rv) { 468 aprint_error("%s: reset failed\n", sc->sc_dv.dv_xname); 469 return; 470 } 471 472 /* Initialise connection with controller. */ 473 twe_init_connection(sc); 474 475 twe_describe_controller(sc); 476 477 /* Find and attach RAID array units. */ 478 sc->sc_nunits = 0; 479 for (i = 0; i < TWE_MAX_UNITS; i++) 480 (void) twe_add_unit(sc, i); 481 482 /* ...and finally, enable interrupts. */ 483 twe_outl(sc, TWE_REG_CTL, TWE_CTL_CLEAR_ATTN_INTR | 484 TWE_CTL_UNMASK_RESP_INTR | 485 TWE_CTL_ENABLE_INTRS); 486 487 /* sysctl set-up for 3ware cli */ 488 if (sysctl_createv(NULL, 0, NULL, NULL, 489 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", 490 NULL, NULL, 0, NULL, 0, 491 CTL_HW, CTL_EOL) != 0) { 492 printf("%s: could not create %s sysctl node\n", 493 sc->sc_dv.dv_xname, ctlnames[CTL_HW].ctl_name); 494 return; 495 } 496 if (sysctl_createv(NULL, 0, NULL, &node, 497 0, CTLTYPE_NODE, sc->sc_dv.dv_xname, 498 SYSCTL_DESCR("twe driver information"), 499 NULL, 0, NULL, 0, 500 CTL_HW, CTL_CREATE, CTL_EOL) != 0) { 501 printf("%s: could not create %s.%s sysctl node\n", 502 sc->sc_dv.dv_xname, ctlnames[CTL_HW].ctl_name, 503 sc->sc_dv.dv_xname); 504 return; 505 } 506 if ((i = sysctl_createv(NULL, 0, NULL, NULL, 507 0, CTLTYPE_STRING, "driver_version", 508 SYSCTL_DESCR("twe0 driver version"), 509 NULL, 0, &twever, 0, 510 CTL_HW, node->sysctl_num, CTL_CREATE, CTL_EOL)) 511 != 0) { 512 printf("%s: could not create %s.%s.driver_version sysctl\n", 513 sc->sc_dv.dv_xname, ctlnames[CTL_HW].ctl_name, 514 sc->sc_dv.dv_xname); 515 return; 516 } 517 518 maj = cdevsw_lookup_major(&twe_cdevsw); 519 device_register_name(makedev(maj, device_unit(self)), self, true, 520 DEV_OTHER, device_xname(self)); 521 } 522 523 void 524 twe_register_callbacks(struct twe_softc *sc, int unit, 525 const struct twe_callbacks *tcb) 526 { 527 528 sc->sc_units[unit].td_callbacks = tcb; 529 } 530 531 static void 532 twe_recompute_openings(struct twe_softc *sc) 533 { 534 struct twe_drive *td; 535 int unit, openings; 536 537 if (sc->sc_nunits != 0) 538 openings = (TWE_MAX_QUEUECNT - 1) / sc->sc_nunits; 539 else 540 openings = 0; 541 if (openings == sc->sc_openings) 542 return; 543 sc->sc_openings = openings; 544 545 #ifdef TWE_DEBUG 546 printf("%s: %d array%s, %d openings per array\n", 547 sc->sc_dv.dv_xname, sc->sc_nunits, 548 sc->sc_nunits == 1 ? "" : "s", sc->sc_openings); 549 #endif 550 551 for (unit = 0; unit < TWE_MAX_UNITS; unit++) { 552 td = &sc->sc_units[unit]; 553 if (td->td_dev != NULL) 554 (*td->td_callbacks->tcb_openings)(td->td_dev, 555 sc->sc_openings); 556 } 557 } 558 559 static int 560 twe_add_unit(struct twe_softc *sc, int unit) 561 { 562 struct twe_param *dtp, *atp; 563 struct twe_array_descriptor *ad; 564 struct twe_drive *td; 565 struct twe_attach_args twea; 566 uint32_t newsize; 567 int rv; 568 uint16_t dsize; 569 uint8_t newtype, newstripe; 570 int locs[TWECF_NLOCS]; 571 572 if (unit < 0 || unit >= TWE_MAX_UNITS) 573 return (EINVAL); 574 575 /* Find attached units. */ 576 rv = twe_param_get(sc, TWE_PARAM_UNITSUMMARY, 577 TWE_PARAM_UNITSUMMARY_Status, TWE_MAX_UNITS, NULL, &dtp); 578 if (rv != 0) { 579 aprint_error("%s: error %d fetching unit summary\n", 580 sc->sc_dv.dv_xname, rv); 581 return (rv); 582 } 583 584 /* For each detected unit, collect size and store in an array. */ 585 td = &sc->sc_units[unit]; 586 587 /* Unit present? */ 588 if ((dtp->tp_data[unit] & TWE_PARAM_UNITSTATUS_Online) == 0) { 589 /* 590 * XXX Should we check to see if a device has been 591 * XXX attached at this index and detach it if it 592 * XXX has? ("rescan" semantics) 593 */ 594 rv = 0; 595 goto out; 596 } 597 598 rv = twe_param_get_2(sc, TWE_PARAM_UNITINFO + unit, 599 TWE_PARAM_UNITINFO_DescriptorSize, &dsize); 600 if (rv != 0) { 601 aprint_error("%s: error %d fetching descriptor size " 602 "for unit %d\n", sc->sc_dv.dv_xname, rv, unit); 603 goto out; 604 } 605 606 rv = twe_param_get(sc, TWE_PARAM_UNITINFO + unit, 607 TWE_PARAM_UNITINFO_Descriptor, dsize - 3, NULL, &atp); 608 if (rv != 0) { 609 aprint_error("%s: error %d fetching array descriptor " 610 "for unit %d\n", sc->sc_dv.dv_xname, rv, unit); 611 goto out; 612 } 613 614 ad = (struct twe_array_descriptor *)atp->tp_data; 615 newtype = ad->configuration; 616 newstripe = ad->stripe_size; 617 free(atp, M_DEVBUF); 618 619 rv = twe_param_get_4(sc, TWE_PARAM_UNITINFO + unit, 620 TWE_PARAM_UNITINFO_Capacity, &newsize); 621 if (rv != 0) { 622 aprint_error( 623 "%s: error %d fetching capacity for unit %d\n", 624 sc->sc_dv.dv_xname, rv, unit); 625 goto out; 626 } 627 628 /* 629 * Have a device, so we need to attach it. If there is currently 630 * something sitting at the slot, and the parameters are different, 631 * then we detach the old device before attaching the new one. 632 */ 633 if (td->td_dev != NULL && 634 td->td_size == newsize && 635 td->td_type == newtype && 636 td->td_stripe == newstripe) { 637 /* Same as the old device; just keep using it. */ 638 rv = 0; 639 goto out; 640 } else if (td->td_dev != NULL) { 641 /* Detach the old device first. */ 642 (void) config_detach(td->td_dev, DETACH_FORCE); 643 td->td_dev = NULL; 644 } else if (td->td_size == 0) 645 sc->sc_nunits++; 646 647 /* 648 * Committed to the new array unit; assign its parameters and 649 * recompute the number of available command openings. 650 */ 651 td->td_size = newsize; 652 td->td_type = newtype; 653 td->td_stripe = newstripe; 654 twe_recompute_openings(sc); 655 656 twea.twea_unit = unit; 657 658 locs[TWECF_UNIT] = unit; 659 660 td->td_dev = config_found_sm_loc(&sc->sc_dv, "twe", locs, &twea, 661 twe_print, config_stdsubmatch); 662 663 rv = 0; 664 out: 665 free(dtp, M_DEVBUF); 666 return (rv); 667 } 668 669 static int 670 twe_del_unit(struct twe_softc *sc, int unit) 671 { 672 struct twe_drive *td; 673 674 if (unit < 0 || unit >= TWE_MAX_UNITS) 675 return (EINVAL); 676 677 td = &sc->sc_units[unit]; 678 if (td->td_size != 0) 679 sc->sc_nunits--; 680 td->td_size = 0; 681 td->td_type = 0; 682 td->td_stripe = 0; 683 if (td->td_dev != NULL) { 684 (void) config_detach(td->td_dev, DETACH_FORCE); 685 td->td_dev = NULL; 686 } 687 twe_recompute_openings(sc); 688 return (0); 689 } 690 691 /* 692 * Reset the controller. 693 * MUST BE CALLED AT splbio()! 694 */ 695 static int 696 twe_reset(struct twe_softc *sc) 697 { 698 uint16_t aen; 699 u_int status; 700 volatile u_int32_t junk; 701 int got, rv; 702 703 /* Issue a soft reset. */ 704 twe_outl(sc, TWE_REG_CTL, TWE_CTL_ISSUE_SOFT_RESET | 705 TWE_CTL_CLEAR_HOST_INTR | 706 TWE_CTL_CLEAR_ATTN_INTR | 707 TWE_CTL_MASK_CMD_INTR | 708 TWE_CTL_MASK_RESP_INTR | 709 TWE_CTL_CLEAR_ERROR_STS | 710 TWE_CTL_DISABLE_INTRS); 711 712 /* Wait for attention... */ 713 if (twe_status_wait(sc, TWE_STS_ATTN_INTR, 30)) { 714 printf("%s: timeout waiting for attention interrupt\n", 715 sc->sc_dv.dv_xname); 716 return (-1); 717 } 718 719 /* ...and ACK it. */ 720 twe_outl(sc, TWE_REG_CTL, TWE_CTL_CLEAR_ATTN_INTR); 721 722 /* 723 * Pull AENs out of the controller; look for a soft reset AEN. 724 * Open code this, since we want to detect reset even if the 725 * queue for management tools is full. 726 * 727 * Note that since: 728 * - interrupts are blocked 729 * - we have reset the controller 730 * - acknowledged the pending ATTENTION 731 * that there is no way a pending asynchronous AEN fetch would 732 * finish, so clear the flag. 733 */ 734 sc->sc_flags &= ~TWEF_AEN; 735 for (got = 0;;) { 736 rv = twe_aen_get(sc, &aen); 737 if (rv != 0) 738 printf("%s: error %d while draining event queue\n", 739 sc->sc_dv.dv_xname, rv); 740 if (TWE_AEN_CODE(aen) == TWE_AEN_QUEUE_EMPTY) 741 break; 742 if (TWE_AEN_CODE(aen) == TWE_AEN_SOFT_RESET) 743 got = 1; 744 twe_aen_enqueue(sc, aen, 1); 745 } 746 747 if (!got) { 748 printf("%s: reset not reported\n", sc->sc_dv.dv_xname); 749 return (-1); 750 } 751 752 /* Check controller status. */ 753 status = twe_inl(sc, TWE_REG_STS); 754 if (twe_status_check(sc, status)) { 755 printf("%s: controller errors detected\n", 756 sc->sc_dv.dv_xname); 757 return (-1); 758 } 759 760 /* Drain the response queue. */ 761 for (;;) { 762 status = twe_inl(sc, TWE_REG_STS); 763 if (twe_status_check(sc, status) != 0) { 764 printf("%s: can't drain response queue\n", 765 sc->sc_dv.dv_xname); 766 return (-1); 767 } 768 if ((status & TWE_STS_RESP_QUEUE_EMPTY) != 0) 769 break; 770 junk = twe_inl(sc, TWE_REG_RESP_QUEUE); 771 } 772 773 return (0); 774 } 775 776 /* 777 * Print autoconfiguration message for a sub-device. 778 */ 779 static int 780 twe_print(void *aux, const char *pnp) 781 { 782 struct twe_attach_args *twea; 783 784 twea = aux; 785 786 if (pnp != NULL) 787 aprint_normal("block device at %s", pnp); 788 aprint_normal(" unit %d", twea->twea_unit); 789 return (UNCONF); 790 } 791 792 /* 793 * Interrupt service routine. 794 */ 795 static int 796 twe_intr(void *arg) 797 { 798 struct twe_softc *sc; 799 u_int status; 800 int caught, rv; 801 802 sc = arg; 803 caught = 0; 804 status = twe_inl(sc, TWE_REG_STS); 805 twe_status_check(sc, status); 806 807 /* Host interrupts - purpose unknown. */ 808 if ((status & TWE_STS_HOST_INTR) != 0) { 809 #ifdef DEBUG 810 printf("%s: host interrupt\n", sc->sc_dv.dv_xname); 811 #endif 812 twe_outl(sc, TWE_REG_CTL, TWE_CTL_CLEAR_HOST_INTR); 813 caught = 1; 814 } 815 816 /* 817 * Attention interrupts, signalled when a controller or child device 818 * state change has occurred. 819 */ 820 if ((status & TWE_STS_ATTN_INTR) != 0) { 821 rv = twe_aen_get(sc, NULL); 822 if (rv != 0) 823 printf("%s: unable to retrieve AEN (%d)\n", 824 sc->sc_dv.dv_xname, rv); 825 else 826 twe_outl(sc, TWE_REG_CTL, TWE_CTL_CLEAR_ATTN_INTR); 827 caught = 1; 828 } 829 830 /* 831 * Command interrupts, signalled when the controller can accept more 832 * commands. We don't use this; instead, we try to submit commands 833 * when we receive them, and when other commands have completed. 834 * Mask it so we don't get another one. 835 */ 836 if ((status & TWE_STS_CMD_INTR) != 0) { 837 #ifdef DEBUG 838 printf("%s: command interrupt\n", sc->sc_dv.dv_xname); 839 #endif 840 twe_outl(sc, TWE_REG_CTL, TWE_CTL_MASK_CMD_INTR); 841 caught = 1; 842 } 843 844 if ((status & TWE_STS_RESP_INTR) != 0) { 845 twe_poll(sc); 846 caught = 1; 847 } 848 849 return (caught); 850 } 851 852 /* 853 * Fetch an AEN. Even though this is really like parameter 854 * retrieval, we handle this specially, because we issue this 855 * AEN retrieval command from interrupt context, and thus 856 * reserve a CCB for it to avoid resource shortage. 857 * 858 * XXX There are still potential resource shortages we could 859 * XXX encounter. Consider pre-allocating all AEN-related 860 * XXX resources. 861 * 862 * MUST BE CALLED AT splbio()! 863 */ 864 static int 865 twe_aen_get(struct twe_softc *sc, uint16_t *aenp) 866 { 867 struct twe_ccb *ccb; 868 struct twe_cmd *tc; 869 struct twe_param *tp; 870 int rv; 871 872 /* 873 * If we're already retrieving an AEN, just wait; another 874 * retrieval will be chained after the current one completes. 875 */ 876 if (sc->sc_flags & TWEF_AEN) { 877 /* 878 * It is a fatal software programming error to attempt 879 * to fetch an AEN synchronously when an AEN fetch is 880 * already pending. 881 */ 882 KASSERT(aenp == NULL); 883 return (0); 884 } 885 886 tp = malloc(TWE_SECTOR_SIZE, M_DEVBUF, M_NOWAIT); 887 if (tp == NULL) 888 return (ENOMEM); 889 890 ccb = twe_ccb_alloc(sc, 891 TWE_CCB_AEN | TWE_CCB_DATA_IN | TWE_CCB_DATA_OUT); 892 KASSERT(ccb != NULL); 893 894 ccb->ccb_data = tp; 895 ccb->ccb_datasize = TWE_SECTOR_SIZE; 896 ccb->ccb_tx.tx_handler = (aenp == NULL) ? twe_aen_handler : NULL; 897 ccb->ccb_tx.tx_context = tp; 898 ccb->ccb_tx.tx_dv = &sc->sc_dv; 899 900 tc = ccb->ccb_cmd; 901 tc->tc_size = 2; 902 tc->tc_opcode = TWE_OP_GET_PARAM | (tc->tc_size << 5); 903 tc->tc_unit = 0; 904 tc->tc_count = htole16(1); 905 906 /* Fill in the outbound parameter data. */ 907 tp->tp_table_id = htole16(TWE_PARAM_AEN); 908 tp->tp_param_id = TWE_PARAM_AEN_UnitCode; 909 tp->tp_param_size = 2; 910 911 /* Map the transfer. */ 912 if ((rv = twe_ccb_map(sc, ccb)) != 0) { 913 twe_ccb_free(sc, ccb); 914 goto done; 915 } 916 917 /* Enqueue the command and wait. */ 918 if (aenp != NULL) { 919 rv = twe_ccb_poll(sc, ccb, 5); 920 twe_ccb_unmap(sc, ccb); 921 twe_ccb_free(sc, ccb); 922 if (rv == 0) 923 *aenp = le16toh(*(uint16_t *)tp->tp_data); 924 free(tp, M_DEVBUF); 925 } else { 926 sc->sc_flags |= TWEF_AEN; 927 twe_ccb_enqueue(sc, ccb); 928 rv = 0; 929 } 930 931 done: 932 return (rv); 933 } 934 935 /* 936 * Handle an AEN returned by the controller. 937 * MUST BE CALLED AT splbio()! 938 */ 939 static void 940 twe_aen_handler(struct twe_ccb *ccb, int error) 941 { 942 struct twe_softc *sc; 943 struct twe_param *tp; 944 uint16_t aen; 945 int rv; 946 947 sc = (struct twe_softc *)ccb->ccb_tx.tx_dv; 948 tp = ccb->ccb_tx.tx_context; 949 twe_ccb_unmap(sc, ccb); 950 951 sc->sc_flags &= ~TWEF_AEN; 952 953 if (error) { 954 printf("%s: error retrieving AEN\n", sc->sc_dv.dv_xname); 955 aen = TWE_AEN_QUEUE_EMPTY; 956 } else 957 aen = le16toh(*(u_int16_t *)tp->tp_data); 958 free(tp, M_DEVBUF); 959 twe_ccb_free(sc, ccb); 960 961 if (TWE_AEN_CODE(aen) == TWE_AEN_QUEUE_EMPTY) { 962 twe_outl(sc, TWE_REG_CTL, TWE_CTL_CLEAR_ATTN_INTR); 963 return; 964 } 965 966 twe_aen_enqueue(sc, aen, 0); 967 968 /* 969 * Chain another retrieval in case interrupts have been 970 * coalesced. 971 */ 972 rv = twe_aen_get(sc, NULL); 973 if (rv != 0) 974 printf("%s: unable to retrieve AEN (%d)\n", 975 sc->sc_dv.dv_xname, rv); 976 } 977 978 static void 979 twe_aen_enqueue(struct twe_softc *sc, uint16_t aen, int quiet) 980 { 981 const char *str, *msg; 982 int s, next, nextnext, level; 983 984 /* 985 * First report the AEN on the console. Maybe. 986 */ 987 if (! quiet) { 988 str = twe_describe_code(twe_table_aen, TWE_AEN_CODE(aen)); 989 if (str == NULL) { 990 printf("%s: unknown AEN 0x%04x\n", 991 sc->sc_dv.dv_xname, aen); 992 } else { 993 msg = str + 3; 994 switch (str[1]) { 995 case 'E': level = LOG_EMERG; break; 996 case 'a': level = LOG_ALERT; break; 997 case 'c': level = LOG_CRIT; break; 998 case 'e': level = LOG_ERR; break; 999 case 'w': level = LOG_WARNING; break; 1000 case 'n': level = LOG_NOTICE; break; 1001 case 'i': level = LOG_INFO; break; 1002 case 'd': level = LOG_DEBUG; break; 1003 default: 1004 /* Don't use syslog. */ 1005 level = -1; 1006 } 1007 1008 if (level < 0) { 1009 switch (str[0]) { 1010 case 'u': 1011 case 'p': 1012 printf("%s: %s %d: %s\n", 1013 sc->sc_dv.dv_xname, 1014 str[0] == 'u' ? "unit" : "port", 1015 TWE_AEN_UNIT(aen), msg); 1016 break; 1017 1018 default: 1019 printf("%s: %s\n", 1020 sc->sc_dv.dv_xname, msg); 1021 } 1022 } else { 1023 switch (str[0]) { 1024 case 'u': 1025 case 'p': 1026 log(level, "%s: %s %d: %s\n", 1027 sc->sc_dv.dv_xname, 1028 str[0] == 'u' ? "unit" : "port", 1029 TWE_AEN_UNIT(aen), msg); 1030 break; 1031 1032 default: 1033 log(level, "%s: %s\n", 1034 sc->sc_dv.dv_xname, msg); 1035 } 1036 } 1037 } 1038 } 1039 1040 /* Now enqueue the AEN for mangement tools. */ 1041 s = splbio(); 1042 1043 next = (sc->sc_aen_head + 1) % TWE_AEN_Q_LENGTH; 1044 nextnext = (sc->sc_aen_head + 2) % TWE_AEN_Q_LENGTH; 1045 1046 /* 1047 * If this is the last free slot, then queue up a "queue 1048 * full" message. 1049 */ 1050 if (nextnext == sc->sc_aen_tail) 1051 aen = TWE_AEN_QUEUE_FULL; 1052 1053 if (next != sc->sc_aen_tail) { 1054 sc->sc_aen_queue[sc->sc_aen_head] = aen; 1055 sc->sc_aen_head = next; 1056 } 1057 1058 if (sc->sc_flags & TWEF_AENQ_WAIT) { 1059 sc->sc_flags &= ~TWEF_AENQ_WAIT; 1060 wakeup(&sc->sc_aen_queue); 1061 } 1062 1063 splx(s); 1064 } 1065 1066 /* NOTE: Must be called at splbio(). */ 1067 static uint16_t 1068 twe_aen_dequeue(struct twe_softc *sc) 1069 { 1070 uint16_t aen; 1071 1072 if (sc->sc_aen_tail == sc->sc_aen_head) 1073 aen = TWE_AEN_QUEUE_EMPTY; 1074 else { 1075 aen = sc->sc_aen_queue[sc->sc_aen_tail]; 1076 sc->sc_aen_tail = (sc->sc_aen_tail + 1) % TWE_AEN_Q_LENGTH; 1077 } 1078 1079 return (aen); 1080 } 1081 1082 /* 1083 * These are short-hand functions that execute TWE_OP_GET_PARAM to 1084 * fetch 1, 2, and 4 byte parameter values, respectively. 1085 */ 1086 int 1087 twe_param_get_1(struct twe_softc *sc, int table_id, int param_id, 1088 uint8_t *valp) 1089 { 1090 struct twe_param *tp; 1091 int rv; 1092 1093 rv = twe_param_get(sc, table_id, param_id, 1, NULL, &tp); 1094 if (rv != 0) 1095 return (rv); 1096 *valp = *(uint8_t *)tp->tp_data; 1097 free(tp, M_DEVBUF); 1098 return (0); 1099 } 1100 1101 int 1102 twe_param_get_2(struct twe_softc *sc, int table_id, int param_id, 1103 uint16_t *valp) 1104 { 1105 struct twe_param *tp; 1106 int rv; 1107 1108 rv = twe_param_get(sc, table_id, param_id, 2, NULL, &tp); 1109 if (rv != 0) 1110 return (rv); 1111 *valp = le16toh(*(uint16_t *)tp->tp_data); 1112 free(tp, M_DEVBUF); 1113 return (0); 1114 } 1115 1116 int 1117 twe_param_get_4(struct twe_softc *sc, int table_id, int param_id, 1118 uint32_t *valp) 1119 { 1120 struct twe_param *tp; 1121 int rv; 1122 1123 rv = twe_param_get(sc, table_id, param_id, 4, NULL, &tp); 1124 if (rv != 0) 1125 return (rv); 1126 *valp = le32toh(*(uint32_t *)tp->tp_data); 1127 free(tp, M_DEVBUF); 1128 return (0); 1129 } 1130 1131 /* 1132 * Execute a TWE_OP_GET_PARAM command. If a callback function is provided, 1133 * it will be called with generated context when the command has completed. 1134 * If no callback is provided, the command will be executed synchronously 1135 * and a pointer to a buffer containing the data returned. 1136 * 1137 * The caller or callback is responsible for freeing the buffer. 1138 * 1139 * NOTE: We assume we can sleep here to wait for a CCB to become available. 1140 */ 1141 int 1142 twe_param_get(struct twe_softc *sc, int table_id, int param_id, size_t size, 1143 void (*func)(struct twe_ccb *, int), struct twe_param **pbuf) 1144 { 1145 struct twe_ccb *ccb; 1146 struct twe_cmd *tc; 1147 struct twe_param *tp; 1148 int rv, s; 1149 1150 tp = malloc(TWE_SECTOR_SIZE, M_DEVBUF, M_NOWAIT); 1151 if (tp == NULL) 1152 return ENOMEM; 1153 1154 ccb = twe_ccb_alloc_wait(sc, TWE_CCB_DATA_IN | TWE_CCB_DATA_OUT); 1155 KASSERT(ccb != NULL); 1156 1157 ccb->ccb_data = tp; 1158 ccb->ccb_datasize = TWE_SECTOR_SIZE; 1159 ccb->ccb_tx.tx_handler = func; 1160 ccb->ccb_tx.tx_context = tp; 1161 ccb->ccb_tx.tx_dv = &sc->sc_dv; 1162 1163 tc = ccb->ccb_cmd; 1164 tc->tc_size = 2; 1165 tc->tc_opcode = TWE_OP_GET_PARAM | (tc->tc_size << 5); 1166 tc->tc_unit = 0; 1167 tc->tc_count = htole16(1); 1168 1169 /* Fill in the outbound parameter data. */ 1170 tp->tp_table_id = htole16(table_id); 1171 tp->tp_param_id = param_id; 1172 tp->tp_param_size = size; 1173 1174 /* Map the transfer. */ 1175 if ((rv = twe_ccb_map(sc, ccb)) != 0) { 1176 twe_ccb_free(sc, ccb); 1177 goto done; 1178 } 1179 1180 /* Submit the command and either wait or let the callback handle it. */ 1181 if (func == NULL) { 1182 s = splbio(); 1183 rv = twe_ccb_poll(sc, ccb, 5); 1184 twe_ccb_unmap(sc, ccb); 1185 twe_ccb_free(sc, ccb); 1186 splx(s); 1187 } else { 1188 #ifdef DEBUG 1189 if (pbuf != NULL) 1190 panic("both func and pbuf defined"); 1191 #endif 1192 twe_ccb_enqueue(sc, ccb); 1193 return 0; 1194 } 1195 1196 done: 1197 if (pbuf == NULL || rv != 0) 1198 free(tp, M_DEVBUF); 1199 else if (pbuf != NULL && rv == 0) 1200 *pbuf = tp; 1201 return rv; 1202 } 1203 1204 /* 1205 * Execute a TWE_OP_SET_PARAM command. 1206 * 1207 * NOTE: We assume we can sleep here to wait for a CCB to become available. 1208 */ 1209 static int 1210 twe_param_set(struct twe_softc *sc, int table_id, int param_id, size_t size, 1211 void *sbuf) 1212 { 1213 struct twe_ccb *ccb; 1214 struct twe_cmd *tc; 1215 struct twe_param *tp; 1216 int rv, s; 1217 1218 tp = malloc(TWE_SECTOR_SIZE, M_DEVBUF, M_NOWAIT); 1219 if (tp == NULL) 1220 return ENOMEM; 1221 1222 ccb = twe_ccb_alloc_wait(sc, TWE_CCB_DATA_IN | TWE_CCB_DATA_OUT); 1223 KASSERT(ccb != NULL); 1224 1225 ccb->ccb_data = tp; 1226 ccb->ccb_datasize = TWE_SECTOR_SIZE; 1227 ccb->ccb_tx.tx_handler = 0; 1228 ccb->ccb_tx.tx_context = tp; 1229 ccb->ccb_tx.tx_dv = &sc->sc_dv; 1230 1231 tc = ccb->ccb_cmd; 1232 tc->tc_size = 2; 1233 tc->tc_opcode = TWE_OP_SET_PARAM | (tc->tc_size << 5); 1234 tc->tc_unit = 0; 1235 tc->tc_count = htole16(1); 1236 1237 /* Fill in the outbound parameter data. */ 1238 tp->tp_table_id = htole16(table_id); 1239 tp->tp_param_id = param_id; 1240 tp->tp_param_size = size; 1241 memcpy(tp->tp_data, sbuf, size); 1242 1243 /* Map the transfer. */ 1244 if ((rv = twe_ccb_map(sc, ccb)) != 0) { 1245 twe_ccb_free(sc, ccb); 1246 goto done; 1247 } 1248 1249 /* Submit the command and wait. */ 1250 s = splbio(); 1251 rv = twe_ccb_poll(sc, ccb, 5); 1252 twe_ccb_unmap(sc, ccb); 1253 twe_ccb_free(sc, ccb); 1254 splx(s); 1255 done: 1256 free(tp, M_DEVBUF); 1257 return (rv); 1258 } 1259 1260 /* 1261 * Execute a TWE_OP_INIT_CONNECTION command. Return non-zero on error. 1262 * Must be called with interrupts blocked. 1263 */ 1264 static int 1265 twe_init_connection(struct twe_softc *sc) 1266 { 1267 struct twe_ccb *ccb; 1268 struct twe_cmd *tc; 1269 int rv; 1270 1271 if ((ccb = twe_ccb_alloc(sc, 0)) == NULL) 1272 return (EAGAIN); 1273 1274 /* Build the command. */ 1275 tc = ccb->ccb_cmd; 1276 tc->tc_size = 3; 1277 tc->tc_opcode = TWE_OP_INIT_CONNECTION; 1278 tc->tc_unit = 0; 1279 tc->tc_count = htole16(TWE_MAX_CMDS); 1280 tc->tc_args.init_connection.response_queue_pointer = 0; 1281 1282 /* Submit the command for immediate execution. */ 1283 rv = twe_ccb_poll(sc, ccb, 5); 1284 twe_ccb_free(sc, ccb); 1285 return (rv); 1286 } 1287 1288 /* 1289 * Poll the controller for completed commands. Must be called with 1290 * interrupts blocked. 1291 */ 1292 static void 1293 twe_poll(struct twe_softc *sc) 1294 { 1295 struct twe_ccb *ccb; 1296 int found; 1297 u_int status, cmdid; 1298 1299 found = 0; 1300 1301 for (;;) { 1302 status = twe_inl(sc, TWE_REG_STS); 1303 twe_status_check(sc, status); 1304 1305 if ((status & TWE_STS_RESP_QUEUE_EMPTY)) 1306 break; 1307 1308 found = 1; 1309 cmdid = twe_inl(sc, TWE_REG_RESP_QUEUE); 1310 cmdid = (cmdid & TWE_RESP_MASK) >> TWE_RESP_SHIFT; 1311 if (cmdid >= TWE_MAX_QUEUECNT) { 1312 printf("%s: bad cmdid %d\n", sc->sc_dv.dv_xname, cmdid); 1313 continue; 1314 } 1315 1316 ccb = sc->sc_ccbs + cmdid; 1317 if ((ccb->ccb_flags & TWE_CCB_ACTIVE) == 0) { 1318 printf("%s: CCB for cmdid %d not active\n", 1319 sc->sc_dv.dv_xname, cmdid); 1320 continue; 1321 } 1322 ccb->ccb_flags ^= TWE_CCB_COMPLETE | TWE_CCB_ACTIVE; 1323 1324 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, 1325 (char *)ccb->ccb_cmd - (char *)sc->sc_cmds, 1326 sizeof(struct twe_cmd), 1327 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1328 1329 /* Pass notification to upper layers. */ 1330 if (ccb->ccb_tx.tx_handler != NULL) 1331 (*ccb->ccb_tx.tx_handler)(ccb, 1332 ccb->ccb_cmd->tc_status != 0 ? EIO : 0); 1333 } 1334 1335 /* If any commands have completed, run the software queue. */ 1336 if (found) 1337 twe_ccb_enqueue(sc, NULL); 1338 } 1339 1340 /* 1341 * Wait for `status' to be set in the controller status register. Return 1342 * zero if found, non-zero if the operation timed out. 1343 */ 1344 static int 1345 twe_status_wait(struct twe_softc *sc, u_int32_t status, int timo) 1346 { 1347 1348 for (timo *= 10; timo != 0; timo--) { 1349 if ((twe_inl(sc, TWE_REG_STS) & status) == status) 1350 break; 1351 delay(100000); 1352 } 1353 1354 return (timo == 0); 1355 } 1356 1357 /* 1358 * Clear a PCI parity error. 1359 */ 1360 static void 1361 twe_clear_pci_parity_error(struct twe_softc *sc) 1362 { 1363 bus_space_write_4(sc->sc_iot, sc->sc_ioh, 0x0, TWE_CTL_CLEAR_PARITY_ERROR); 1364 1365 //FreeBSD: pci_write_config(sc->twe_dev, PCIR_STATUS, TWE_PCI_CLEAR_PARITY_ERROR, 2); 1366 } 1367 1368 1369 /* 1370 * Clear a PCI abort. 1371 */ 1372 static void 1373 twe_clear_pci_abort(struct twe_softc *sc) 1374 { 1375 bus_space_write_4(sc->sc_iot, sc->sc_ioh, 0x0, TWE_CTL_CLEAR_PCI_ABORT); 1376 1377 //FreeBSD: pci_write_config(sc->twe_dev, PCIR_STATUS, TWE_PCI_CLEAR_PCI_ABORT, 2); 1378 } 1379 1380 /* 1381 * Complain if the status bits aren't what we expect. 1382 */ 1383 static int 1384 twe_status_check(struct twe_softc *sc, u_int status) 1385 { 1386 int rv; 1387 1388 rv = 0; 1389 1390 if ((status & TWE_STS_EXPECTED_BITS) != TWE_STS_EXPECTED_BITS) { 1391 printf("%s: missing status bits: 0x%08x\n", sc->sc_dv.dv_xname, 1392 status & ~TWE_STS_EXPECTED_BITS); 1393 rv = -1; 1394 } 1395 1396 if ((status & TWE_STS_UNEXPECTED_BITS) != 0) { 1397 printf("%s: unexpected status bits: 0x%08x\n", 1398 sc->sc_dv.dv_xname, status & TWE_STS_UNEXPECTED_BITS); 1399 rv = -1; 1400 if (status & TWE_STS_PCI_PARITY_ERROR) { 1401 printf("%s: PCI parity error: Reseat card, move card " 1402 "or buggy device present.\n", 1403 sc->sc_dv.dv_xname); 1404 twe_clear_pci_parity_error(sc); 1405 } 1406 if (status & TWE_STS_PCI_ABORT) { 1407 printf("%s: PCI abort, clearing.\n", 1408 sc->sc_dv.dv_xname); 1409 twe_clear_pci_abort(sc); 1410 } 1411 } 1412 1413 return (rv); 1414 } 1415 1416 /* 1417 * Allocate and initialise a CCB. 1418 */ 1419 static inline void 1420 twe_ccb_init(struct twe_softc *sc, struct twe_ccb *ccb, int flags) 1421 { 1422 struct twe_cmd *tc; 1423 1424 ccb->ccb_tx.tx_handler = NULL; 1425 ccb->ccb_flags = flags; 1426 tc = ccb->ccb_cmd; 1427 tc->tc_status = 0; 1428 tc->tc_flags = 0; 1429 tc->tc_cmdid = ccb->ccb_cmdid; 1430 } 1431 1432 struct twe_ccb * 1433 twe_ccb_alloc(struct twe_softc *sc, int flags) 1434 { 1435 struct twe_ccb *ccb; 1436 int s; 1437 1438 s = splbio(); 1439 if (__predict_false((flags & TWE_CCB_AEN) != 0)) { 1440 /* Use the reserved CCB. */ 1441 ccb = sc->sc_ccbs; 1442 } else { 1443 /* Allocate a CCB and command block. */ 1444 if (__predict_false((ccb = 1445 SLIST_FIRST(&sc->sc_ccb_freelist)) == NULL)) { 1446 splx(s); 1447 return (NULL); 1448 } 1449 SLIST_REMOVE_HEAD(&sc->sc_ccb_freelist, ccb_chain.slist); 1450 } 1451 #ifdef DIAGNOSTIC 1452 if ((long)(ccb - sc->sc_ccbs) == 0 && (flags & TWE_CCB_AEN) == 0) 1453 panic("twe_ccb_alloc: got reserved CCB for non-AEN"); 1454 if ((ccb->ccb_flags & TWE_CCB_ALLOCED) != 0) 1455 panic("twe_ccb_alloc: CCB %ld already allocated", 1456 (long)(ccb - sc->sc_ccbs)); 1457 flags |= TWE_CCB_ALLOCED; 1458 #endif 1459 splx(s); 1460 1461 twe_ccb_init(sc, ccb, flags); 1462 return (ccb); 1463 } 1464 1465 struct twe_ccb * 1466 twe_ccb_alloc_wait(struct twe_softc *sc, int flags) 1467 { 1468 struct twe_ccb *ccb; 1469 int s; 1470 1471 KASSERT((flags & TWE_CCB_AEN) == 0); 1472 1473 s = splbio(); 1474 while (__predict_false((ccb = 1475 SLIST_FIRST(&sc->sc_ccb_freelist)) == NULL)) { 1476 sc->sc_flags |= TWEF_WAIT_CCB; 1477 (void) tsleep(&sc->sc_ccb_freelist, PRIBIO, "tweccb", 0); 1478 } 1479 SLIST_REMOVE_HEAD(&sc->sc_ccb_freelist, ccb_chain.slist); 1480 #ifdef DIAGNOSTIC 1481 if ((ccb->ccb_flags & TWE_CCB_ALLOCED) != 0) 1482 panic("twe_ccb_alloc_wait: CCB %ld already allocated", 1483 (long)(ccb - sc->sc_ccbs)); 1484 flags |= TWE_CCB_ALLOCED; 1485 #endif 1486 splx(s); 1487 1488 twe_ccb_init(sc, ccb, flags); 1489 return (ccb); 1490 } 1491 1492 /* 1493 * Free a CCB. 1494 */ 1495 void 1496 twe_ccb_free(struct twe_softc *sc, struct twe_ccb *ccb) 1497 { 1498 int s; 1499 1500 s = splbio(); 1501 if ((ccb->ccb_flags & TWE_CCB_AEN) == 0) { 1502 SLIST_INSERT_HEAD(&sc->sc_ccb_freelist, ccb, ccb_chain.slist); 1503 if (__predict_false((sc->sc_flags & TWEF_WAIT_CCB) != 0)) { 1504 sc->sc_flags &= ~TWEF_WAIT_CCB; 1505 wakeup(&sc->sc_ccb_freelist); 1506 } 1507 } 1508 ccb->ccb_flags = 0; 1509 splx(s); 1510 } 1511 1512 /* 1513 * Map the specified CCB's command block and data buffer (if any) into 1514 * controller visible space. Perform DMA synchronisation. 1515 */ 1516 int 1517 twe_ccb_map(struct twe_softc *sc, struct twe_ccb *ccb) 1518 { 1519 struct twe_cmd *tc; 1520 int flags, nsegs, i, s, rv; 1521 void *data; 1522 1523 /* 1524 * The data as a whole must be 512-byte aligned. 1525 */ 1526 if (((u_long)ccb->ccb_data & (TWE_ALIGNMENT - 1)) != 0) { 1527 s = splvm(); 1528 /* XXX */ 1529 ccb->ccb_abuf = uvm_km_alloc(kmem_map, 1530 ccb->ccb_datasize, 0, UVM_KMF_NOWAIT|UVM_KMF_WIRED); 1531 splx(s); 1532 data = (void *)ccb->ccb_abuf; 1533 if ((ccb->ccb_flags & TWE_CCB_DATA_OUT) != 0) 1534 memcpy(data, ccb->ccb_data, ccb->ccb_datasize); 1535 } else { 1536 ccb->ccb_abuf = (vaddr_t)0; 1537 data = ccb->ccb_data; 1538 } 1539 1540 /* 1541 * Map the data buffer into bus space and build the S/G list. 1542 */ 1543 rv = bus_dmamap_load(sc->sc_dmat, ccb->ccb_dmamap_xfer, data, 1544 ccb->ccb_datasize, NULL, BUS_DMA_NOWAIT | BUS_DMA_STREAMING | 1545 ((ccb->ccb_flags & TWE_CCB_DATA_IN) ? 1546 BUS_DMA_READ : BUS_DMA_WRITE)); 1547 if (rv != 0) { 1548 if (ccb->ccb_abuf != (vaddr_t)0) { 1549 s = splvm(); 1550 /* XXX */ 1551 uvm_km_free(kmem_map, ccb->ccb_abuf, 1552 ccb->ccb_datasize, UVM_KMF_WIRED); 1553 splx(s); 1554 } 1555 return (rv); 1556 } 1557 1558 nsegs = ccb->ccb_dmamap_xfer->dm_nsegs; 1559 tc = ccb->ccb_cmd; 1560 tc->tc_size += 2 * nsegs; 1561 1562 /* The location of the S/G list is dependant upon command type. */ 1563 switch (tc->tc_opcode >> 5) { 1564 case 2: 1565 for (i = 0; i < nsegs; i++) { 1566 tc->tc_args.param.sgl[i].tsg_address = 1567 htole32(ccb->ccb_dmamap_xfer->dm_segs[i].ds_addr); 1568 tc->tc_args.param.sgl[i].tsg_length = 1569 htole32(ccb->ccb_dmamap_xfer->dm_segs[i].ds_len); 1570 } 1571 /* XXX Needed? */ 1572 for (; i < TWE_SG_SIZE; i++) { 1573 tc->tc_args.param.sgl[i].tsg_address = 0; 1574 tc->tc_args.param.sgl[i].tsg_length = 0; 1575 } 1576 break; 1577 case 3: 1578 for (i = 0; i < nsegs; i++) { 1579 tc->tc_args.io.sgl[i].tsg_address = 1580 htole32(ccb->ccb_dmamap_xfer->dm_segs[i].ds_addr); 1581 tc->tc_args.io.sgl[i].tsg_length = 1582 htole32(ccb->ccb_dmamap_xfer->dm_segs[i].ds_len); 1583 } 1584 /* XXX Needed? */ 1585 for (; i < TWE_SG_SIZE; i++) { 1586 tc->tc_args.io.sgl[i].tsg_address = 0; 1587 tc->tc_args.io.sgl[i].tsg_length = 0; 1588 } 1589 break; 1590 default: 1591 /* 1592 * In all likelihood, this is a command passed from 1593 * management tools in userspace where no S/G list is 1594 * necessary because no data is being passed. 1595 */ 1596 break; 1597 } 1598 1599 if ((ccb->ccb_flags & TWE_CCB_DATA_IN) != 0) 1600 flags = BUS_DMASYNC_PREREAD; 1601 else 1602 flags = 0; 1603 if ((ccb->ccb_flags & TWE_CCB_DATA_OUT) != 0) 1604 flags |= BUS_DMASYNC_PREWRITE; 1605 1606 bus_dmamap_sync(sc->sc_dmat, ccb->ccb_dmamap_xfer, 0, 1607 ccb->ccb_datasize, flags); 1608 return (0); 1609 } 1610 1611 /* 1612 * Unmap the specified CCB's command block and data buffer (if any) and 1613 * perform DMA synchronisation. 1614 */ 1615 void 1616 twe_ccb_unmap(struct twe_softc *sc, struct twe_ccb *ccb) 1617 { 1618 int flags, s; 1619 1620 if ((ccb->ccb_flags & TWE_CCB_DATA_IN) != 0) 1621 flags = BUS_DMASYNC_POSTREAD; 1622 else 1623 flags = 0; 1624 if ((ccb->ccb_flags & TWE_CCB_DATA_OUT) != 0) 1625 flags |= BUS_DMASYNC_POSTWRITE; 1626 1627 bus_dmamap_sync(sc->sc_dmat, ccb->ccb_dmamap_xfer, 0, 1628 ccb->ccb_datasize, flags); 1629 bus_dmamap_unload(sc->sc_dmat, ccb->ccb_dmamap_xfer); 1630 1631 if (ccb->ccb_abuf != (vaddr_t)0) { 1632 if ((ccb->ccb_flags & TWE_CCB_DATA_IN) != 0) 1633 memcpy(ccb->ccb_data, (void *)ccb->ccb_abuf, 1634 ccb->ccb_datasize); 1635 s = splvm(); 1636 /* XXX */ 1637 uvm_km_free(kmem_map, ccb->ccb_abuf, ccb->ccb_datasize, 1638 UVM_KMF_WIRED); 1639 splx(s); 1640 } 1641 } 1642 1643 /* 1644 * Submit a command to the controller and poll on completion. Return 1645 * non-zero on timeout (but don't check status, as some command types don't 1646 * return status). Must be called with interrupts blocked. 1647 */ 1648 int 1649 twe_ccb_poll(struct twe_softc *sc, struct twe_ccb *ccb, int timo) 1650 { 1651 int rv; 1652 1653 if ((rv = twe_ccb_submit(sc, ccb)) != 0) 1654 return (rv); 1655 1656 for (timo *= 1000; timo != 0; timo--) { 1657 twe_poll(sc); 1658 if ((ccb->ccb_flags & TWE_CCB_COMPLETE) != 0) 1659 break; 1660 DELAY(100); 1661 } 1662 1663 return (timo == 0); 1664 } 1665 1666 /* 1667 * If a CCB is specified, enqueue it. Pull CCBs off the software queue in 1668 * the order that they were enqueued and try to submit their command blocks 1669 * to the controller for execution. 1670 */ 1671 void 1672 twe_ccb_enqueue(struct twe_softc *sc, struct twe_ccb *ccb) 1673 { 1674 int s; 1675 1676 s = splbio(); 1677 1678 if (ccb != NULL) 1679 SIMPLEQ_INSERT_TAIL(&sc->sc_ccb_queue, ccb, ccb_chain.simpleq); 1680 1681 while ((ccb = SIMPLEQ_FIRST(&sc->sc_ccb_queue)) != NULL) { 1682 if (twe_ccb_submit(sc, ccb)) 1683 break; 1684 SIMPLEQ_REMOVE_HEAD(&sc->sc_ccb_queue, ccb_chain.simpleq); 1685 } 1686 1687 splx(s); 1688 } 1689 1690 /* 1691 * Submit the command block associated with the specified CCB to the 1692 * controller for execution. Must be called with interrupts blocked. 1693 */ 1694 int 1695 twe_ccb_submit(struct twe_softc *sc, struct twe_ccb *ccb) 1696 { 1697 bus_addr_t pa; 1698 int rv; 1699 u_int status; 1700 1701 /* Check to see if we can post a command. */ 1702 status = twe_inl(sc, TWE_REG_STS); 1703 twe_status_check(sc, status); 1704 1705 if ((status & TWE_STS_CMD_QUEUE_FULL) == 0) { 1706 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, 1707 (char *)ccb->ccb_cmd - (char *)sc->sc_cmds, 1708 sizeof(struct twe_cmd), 1709 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 1710 #ifdef DIAGNOSTIC 1711 if ((ccb->ccb_flags & TWE_CCB_ALLOCED) == 0) 1712 panic("%s: CCB %ld not ALLOCED\n", 1713 sc->sc_dv.dv_xname, (long)(ccb - sc->sc_ccbs)); 1714 #endif 1715 ccb->ccb_flags |= TWE_CCB_ACTIVE; 1716 pa = sc->sc_cmds_paddr + 1717 ccb->ccb_cmdid * sizeof(struct twe_cmd); 1718 twe_outl(sc, TWE_REG_CMD_QUEUE, (u_int32_t)pa); 1719 rv = 0; 1720 } else 1721 rv = EBUSY; 1722 1723 return (rv); 1724 } 1725 1726 1727 /* 1728 * Accept an open operation on the control device. 1729 */ 1730 static int 1731 tweopen(dev_t dev, int flag, int mode, struct lwp *l) 1732 { 1733 struct twe_softc *twe; 1734 1735 if ((twe = device_lookup(&twe_cd, minor(dev))) == NULL) 1736 return (ENXIO); 1737 if ((twe->sc_flags & TWEF_OPEN) != 0) 1738 return (EBUSY); 1739 1740 twe->sc_flags |= TWEF_OPEN; 1741 return (0); 1742 } 1743 1744 /* 1745 * Accept the last close on the control device. 1746 */ 1747 static int 1748 tweclose(dev_t dev, int flag, int mode, 1749 struct lwp *l) 1750 { 1751 struct twe_softc *twe; 1752 1753 twe = device_lookup(&twe_cd, minor(dev)); 1754 twe->sc_flags &= ~TWEF_OPEN; 1755 return (0); 1756 } 1757 1758 void 1759 twe_ccb_wait_handler(struct twe_ccb *ccb, int error) 1760 { 1761 1762 /* Just wake up the sleeper. */ 1763 wakeup(ccb); 1764 } 1765 1766 /* 1767 * Handle control operations. 1768 */ 1769 static int 1770 tweioctl(dev_t dev, u_long cmd, void *data, int flag, 1771 struct lwp *l) 1772 { 1773 struct twe_softc *twe; 1774 struct twe_ccb *ccb; 1775 struct twe_param *param; 1776 struct twe_usercommand *tu; 1777 struct twe_paramcommand *tp; 1778 struct twe_drivecommand *td; 1779 void *pdata = NULL; 1780 int s, error = 0; 1781 u_int8_t cmdid; 1782 1783 twe = device_lookup(&twe_cd, minor(dev)); 1784 tu = (struct twe_usercommand *)data; 1785 tp = (struct twe_paramcommand *)data; 1786 td = (struct twe_drivecommand *)data; 1787 1788 /* This is intended to be compatible with the FreeBSD interface. */ 1789 switch (cmd) { 1790 case TWEIO_COMMAND: 1791 error = kauth_authorize_device_passthru(l->l_cred, dev, 1792 KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_ALL, data); 1793 if (error) 1794 return (error); 1795 1796 /* XXX mutex */ 1797 if (tu->tu_size > 0) { 1798 /* 1799 * XXX Handle > TWE_SECTOR_SIZE? Let's see if 1800 * it's really necessary, first. 1801 */ 1802 if (tu->tu_size > TWE_SECTOR_SIZE) { 1803 #ifdef TWE_DEBUG 1804 printf("%s: TWEIO_COMMAND: tu_size = %d\n", 1805 twe->sc_dv.dv_xname, tu->tu_size); 1806 #endif 1807 return EINVAL; 1808 } 1809 pdata = malloc(TWE_SECTOR_SIZE, M_DEVBUF, M_WAITOK); 1810 error = copyin(tu->tu_data, pdata, tu->tu_size); 1811 if (error != 0) 1812 goto done; 1813 ccb = twe_ccb_alloc_wait(twe, 1814 TWE_CCB_DATA_IN | TWE_CCB_DATA_OUT); 1815 KASSERT(ccb != NULL); 1816 ccb->ccb_data = pdata; 1817 ccb->ccb_datasize = TWE_SECTOR_SIZE; 1818 } else { 1819 ccb = twe_ccb_alloc_wait(twe, 0); 1820 KASSERT(ccb != NULL); 1821 } 1822 1823 ccb->ccb_tx.tx_handler = twe_ccb_wait_handler; 1824 ccb->ccb_tx.tx_context = NULL; 1825 ccb->ccb_tx.tx_dv = &twe->sc_dv; 1826 1827 cmdid = ccb->ccb_cmdid; 1828 memcpy(ccb->ccb_cmd, &tu->tu_cmd, sizeof(struct twe_cmd)); 1829 ccb->ccb_cmd->tc_cmdid = cmdid; 1830 1831 /* Map the transfer. */ 1832 if ((error = twe_ccb_map(twe, ccb)) != 0) { 1833 twe_ccb_free(twe, ccb); 1834 goto done; 1835 } 1836 1837 /* Submit the command and wait up to 1 minute. */ 1838 error = 0; 1839 twe_ccb_enqueue(twe, ccb); 1840 s = splbio(); 1841 while ((ccb->ccb_flags & TWE_CCB_COMPLETE) == 0) 1842 if ((error = tsleep(ccb, PRIBIO, "tweioctl", 1843 60 * hz)) != 0) 1844 break; 1845 splx(s); 1846 1847 /* Copy the command back to the ioctl argument. */ 1848 memcpy(&tu->tu_cmd, ccb->ccb_cmd, sizeof(struct twe_cmd)); 1849 #ifdef TWE_DEBUG 1850 printf("%s: TWEIO_COMMAND: tc_opcode = 0x%02x, " 1851 "tc_status = 0x%02x\n", twe->sc_dv.dv_xname, 1852 tu->tu_cmd.tc_opcode, tu->tu_cmd.tc_status); 1853 #endif 1854 1855 s = splbio(); 1856 twe_ccb_free(twe, ccb); 1857 splx(s); 1858 1859 if (tu->tu_size > 0) 1860 error = copyout(pdata, tu->tu_data, tu->tu_size); 1861 goto done; 1862 1863 case TWEIO_STATS: 1864 return (ENOENT); 1865 1866 case TWEIO_AEN_POLL: 1867 s = splbio(); 1868 *(u_int *)data = twe_aen_dequeue(twe); 1869 splx(s); 1870 return (0); 1871 1872 case TWEIO_AEN_WAIT: 1873 s = splbio(); 1874 while ((*(u_int *)data = 1875 twe_aen_dequeue(twe)) == TWE_AEN_QUEUE_EMPTY) { 1876 twe->sc_flags |= TWEF_AENQ_WAIT; 1877 error = tsleep(&twe->sc_aen_queue, PRIBIO | PCATCH, 1878 "tweaen", 0); 1879 if (error == EINTR) { 1880 splx(s); 1881 return (error); 1882 } 1883 } 1884 splx(s); 1885 return (0); 1886 1887 case TWEIO_GET_PARAM: 1888 error = twe_param_get(twe, tp->tp_table_id, tp->tp_param_id, 1889 tp->tp_size, 0, ¶m); 1890 if (error != 0) 1891 return (error); 1892 if (param->tp_param_size > tp->tp_size) { 1893 error = EFAULT; 1894 goto done; 1895 } 1896 error = copyout(param->tp_data, tp->tp_data, 1897 param->tp_param_size); 1898 free(param, M_DEVBUF); 1899 goto done; 1900 1901 case TWEIO_SET_PARAM: 1902 pdata = malloc(tp->tp_size, M_DEVBUF, M_WAITOK); 1903 if ((error = copyin(tp->tp_data, pdata, tp->tp_size)) != 0) 1904 goto done; 1905 error = twe_param_set(twe, tp->tp_table_id, tp->tp_param_id, 1906 tp->tp_size, pdata); 1907 goto done; 1908 1909 case TWEIO_RESET: 1910 s = splbio(); 1911 twe_reset(twe); 1912 splx(s); 1913 return (0); 1914 1915 case TWEIO_ADD_UNIT: 1916 /* XXX mutex */ 1917 return (twe_add_unit(twe, td->td_unit)); 1918 1919 case TWEIO_DEL_UNIT: 1920 /* XXX mutex */ 1921 return (twe_del_unit(twe, td->td_unit)); 1922 1923 default: 1924 return EINVAL; 1925 } 1926 done: 1927 if (pdata) 1928 free(pdata, M_DEVBUF); 1929 return error; 1930 } 1931 1932 /* 1933 * Print some information about the controller 1934 */ 1935 static void 1936 twe_describe_controller(struct twe_softc *sc) 1937 { 1938 struct twe_param *p[6]; 1939 int i, rv = 0; 1940 uint32_t dsize; 1941 uint8_t ports; 1942 1943 ports = 0; 1944 1945 /* get the port count */ 1946 rv |= twe_param_get_1(sc, TWE_PARAM_CONTROLLER, 1947 TWE_PARAM_CONTROLLER_PortCount, &ports); 1948 1949 /* get version strings */ 1950 rv |= twe_param_get(sc, TWE_PARAM_VERSION, TWE_PARAM_VERSION_Mon, 1951 16, NULL, &p[0]); 1952 rv |= twe_param_get(sc, TWE_PARAM_VERSION, TWE_PARAM_VERSION_FW, 1953 16, NULL, &p[1]); 1954 rv |= twe_param_get(sc, TWE_PARAM_VERSION, TWE_PARAM_VERSION_BIOS, 1955 16, NULL, &p[2]); 1956 rv |= twe_param_get(sc, TWE_PARAM_VERSION, TWE_PARAM_VERSION_PCB, 1957 8, NULL, &p[3]); 1958 rv |= twe_param_get(sc, TWE_PARAM_VERSION, TWE_PARAM_VERSION_ATA, 1959 8, NULL, &p[4]); 1960 rv |= twe_param_get(sc, TWE_PARAM_VERSION, TWE_PARAM_VERSION_PCI, 1961 8, NULL, &p[5]); 1962 1963 if (rv) { 1964 /* some error occurred */ 1965 aprint_error("%s: failed to fetch version information\n", 1966 sc->sc_dv.dv_xname); 1967 return; 1968 } 1969 1970 aprint_normal("%s: %d ports, Firmware %.16s, BIOS %.16s\n", 1971 sc->sc_dv.dv_xname, ports, 1972 p[1]->tp_data, p[2]->tp_data); 1973 1974 aprint_verbose("%s: Monitor %.16s, PCB %.8s, Achip %.8s, Pchip %.8s\n", 1975 sc->sc_dv.dv_xname, 1976 p[0]->tp_data, p[3]->tp_data, 1977 p[4]->tp_data, p[5]->tp_data); 1978 1979 free(p[0], M_DEVBUF); 1980 free(p[1], M_DEVBUF); 1981 free(p[2], M_DEVBUF); 1982 free(p[3], M_DEVBUF); 1983 free(p[4], M_DEVBUF); 1984 free(p[5], M_DEVBUF); 1985 1986 rv = twe_param_get(sc, TWE_PARAM_DRIVESUMMARY, 1987 TWE_PARAM_DRIVESUMMARY_Status, 16, NULL, &p[0]); 1988 if (rv) { 1989 aprint_error("%s: failed to get drive status summary\n", 1990 sc->sc_dv.dv_xname); 1991 return; 1992 } 1993 for (i = 0; i < ports; i++) { 1994 if (p[0]->tp_data[i] != TWE_PARAM_DRIVESTATUS_Present) 1995 continue; 1996 rv = twe_param_get_4(sc, TWE_PARAM_DRIVEINFO + i, 1997 TWE_PARAM_DRIVEINFO_Size, &dsize); 1998 if (rv) { 1999 aprint_error( 2000 "%s: unable to get drive size for port %d\n", 2001 sc->sc_dv.dv_xname, i); 2002 continue; 2003 } 2004 rv = twe_param_get(sc, TWE_PARAM_DRIVEINFO + i, 2005 TWE_PARAM_DRIVEINFO_Model, 40, NULL, &p[1]); 2006 if (rv) { 2007 aprint_error( 2008 "%s: unable to get drive model for port %d\n", 2009 sc->sc_dv.dv_xname, i); 2010 continue; 2011 } 2012 aprint_verbose("%s: port %d: %.40s %d MB\n", sc->sc_dv.dv_xname, 2013 i, p[1]->tp_data, dsize / 2048); 2014 free(p[1], M_DEVBUF); 2015 } 2016 free(p[0], M_DEVBUF); 2017 } 2018
Indexes created Wed Oct 01 07:09:59 GMT 2025