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sys/dev/ipmi.c
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1 /* $OpenBSD: ipmi.c,v 1.118 2022/04/08 13:13:14 mbuhl Exp $ */ 2 3 /* 4 * Copyright (c) 2015 Masao Uebayashi 5 * Copyright (c) 2005 Jordan Hargrave 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR 21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/param.h> 31 #include <sys/systm.h> 32 #include <sys/kernel.h> 33 #include <sys/device.h> 34 #include <sys/ioctl.h> 35 #include <sys/extent.h> 36 #include <sys/sensors.h> 37 #include <sys/malloc.h> 38 #include <sys/kthread.h> 39 #include <sys/task.h> 40 41 #include <machine/bus.h> 42 #include <machine/smbiosvar.h> 43 44 #include <dev/ipmivar.h> 45 #include <dev/ipmi.h> 46 47 struct ipmi_sensor { 48 u_int8_t *i_sdr; 49 int i_num; 50 int stype; 51 int etype; 52 struct ksensor i_sensor; 53 SLIST_ENTRY(ipmi_sensor) list; 54 }; 55 56 int ipmi_enabled = 0; 57 58 #define SENSOR_REFRESH_RATE 5 /* seconds */ 59 60 #define DEVNAME(s) ((s)->sc_dev.dv_xname) 61 62 #define IPMI_BTMSG_LEN 0 63 #define IPMI_BTMSG_NFLN 1 64 #define IPMI_BTMSG_SEQ 2 65 #define IPMI_BTMSG_CMD 3 66 #define IPMI_BTMSG_CCODE 4 67 #define IPMI_BTMSG_DATASND 4 68 #define IPMI_BTMSG_DATARCV 5 69 70 /* IPMI 2.0, Table 42-3: Sensor Type Codes */ 71 #define IPMI_SENSOR_TYPE_TEMP 0x0101 72 #define IPMI_SENSOR_TYPE_VOLT 0x0102 73 #define IPMI_SENSOR_TYPE_CURRENT 0x0103 74 #define IPMI_SENSOR_TYPE_FAN 0x0104 75 #define IPMI_SENSOR_TYPE_INTRUSION 0x6F05 76 #define IPMI_SENSOR_TYPE_PWRSUPPLY 0x6F08 77 78 /* IPMI 2.0, Table 43-15: Sensor Unit Type Codes */ 79 #define IPMI_UNIT_TYPE_DEGREE_C 1 80 #define IPMI_UNIT_TYPE_DEGREE_F 2 81 #define IPMI_UNIT_TYPE_DEGREE_K 3 82 #define IPMI_UNIT_TYPE_VOLTS 4 83 #define IPMI_UNIT_TYPE_AMPS 5 84 #define IPMI_UNIT_TYPE_WATTS 6 85 #define IPMI_UNIT_TYPE_RPM 18 86 87 #define IPMI_NAME_UNICODE 0x00 88 #define IPMI_NAME_BCDPLUS 0x01 89 #define IPMI_NAME_ASCII6BIT 0x02 90 #define IPMI_NAME_ASCII8BIT 0x03 91 92 #define IPMI_ENTITY_PWRSUPPLY 0x0A 93 94 #define IPMI_INVALID_SENSOR (1L << 5) 95 #define IPMI_DISABLED_SENSOR (1L << 6) 96 97 #define IPMI_SDR_TYPEFULL 1 98 #define IPMI_SDR_TYPECOMPACT 2 99 100 #define byteof(x) ((x) >> 3) 101 #define bitof(x) (1L << ((x) & 0x7)) 102 #define TB(b,m) (data[2+byteof(b)] & bitof(b)) 103 104 #ifdef IPMI_DEBUG 105 int ipmi_dbg = 0; 106 #define dbg_printf(lvl, fmt...) \ 107 if (ipmi_dbg >= lvl) \ 108 printf(fmt); 109 #define dbg_dump(lvl, msg, len, buf) \ 110 if (len && ipmi_dbg >= lvl) \ 111 dumpb(msg, len, (const u_int8_t *)(buf)); 112 #else 113 #define dbg_printf(lvl, fmt...) 114 #define dbg_dump(lvl, msg, len, buf) 115 #endif 116 117 long signextend(unsigned long, int); 118 119 SLIST_HEAD(ipmi_sensors_head, ipmi_sensor); 120 struct ipmi_sensors_head ipmi_sensor_list = 121 SLIST_HEAD_INITIALIZER(ipmi_sensor_list); 122 123 void dumpb(const char *, int, const u_int8_t *); 124 125 int read_sensor(struct ipmi_softc *, struct ipmi_sensor *); 126 int add_sdr_sensor(struct ipmi_softc *, u_int8_t *, int); 127 int get_sdr_partial(struct ipmi_softc *, u_int16_t, u_int16_t, 128 u_int8_t, u_int8_t, void *, u_int16_t *); 129 int get_sdr(struct ipmi_softc *, u_int16_t, u_int16_t *); 130 131 int ipmi_sendcmd(struct ipmi_cmd *); 132 int ipmi_recvcmd(struct ipmi_cmd *); 133 void ipmi_cmd(struct ipmi_cmd *); 134 void ipmi_cmd_poll(struct ipmi_cmd *); 135 void ipmi_cmd_wait(struct ipmi_cmd *); 136 void ipmi_cmd_wait_cb(void *); 137 138 int ipmi_watchdog(void *, int); 139 void ipmi_watchdog_tickle(void *); 140 void ipmi_watchdog_set(void *); 141 142 struct ipmi_softc *ipmilookup(dev_t dev); 143 144 int ipmiopen(dev_t, int, int, struct proc *); 145 int ipmiclose(dev_t, int, int, struct proc *); 146 int ipmiioctl(dev_t, u_long, caddr_t, int, struct proc *); 147 148 long ipow(long, int); 149 long ipmi_convert(u_int8_t, struct sdrtype1 *, long); 150 int ipmi_sensor_name(char *, int, u_int8_t, u_int8_t *, int); 151 152 /* BMC Helper Functions */ 153 u_int8_t bmc_read(struct ipmi_softc *, int); 154 void bmc_write(struct ipmi_softc *, int, u_int8_t); 155 int bmc_io_wait(struct ipmi_softc *, struct ipmi_iowait *); 156 157 void bt_buildmsg(struct ipmi_cmd *); 158 void cmn_buildmsg(struct ipmi_cmd *); 159 160 int getbits(u_int8_t *, int, int); 161 int ipmi_sensor_type(int, int, int, int); 162 163 void ipmi_refresh_sensors(struct ipmi_softc *sc); 164 int ipmi_map_regs(struct ipmi_softc *sc, struct ipmi_attach_args *ia); 165 void ipmi_unmap_regs(struct ipmi_softc *); 166 167 int ipmi_sensor_status(struct ipmi_softc *, struct ipmi_sensor *, 168 u_int8_t *); 169 170 int add_child_sensors(struct ipmi_softc *, u_int8_t *, int, int, int, 171 int, int, int, const char *); 172 173 void ipmi_create_thread(void *); 174 void ipmi_poll_thread(void *); 175 176 int kcs_probe(struct ipmi_softc *); 177 int kcs_reset(struct ipmi_softc *); 178 int kcs_sendmsg(struct ipmi_cmd *); 179 int kcs_recvmsg(struct ipmi_cmd *); 180 181 int bt_probe(struct ipmi_softc *); 182 int bt_reset(struct ipmi_softc *); 183 int bt_sendmsg(struct ipmi_cmd *); 184 int bt_recvmsg(struct ipmi_cmd *); 185 186 int smic_probe(struct ipmi_softc *); 187 int smic_reset(struct ipmi_softc *); 188 int smic_sendmsg(struct ipmi_cmd *); 189 int smic_recvmsg(struct ipmi_cmd *); 190 191 struct ipmi_if kcs_if = { 192 "KCS", 193 IPMI_IF_KCS_NREGS, 194 cmn_buildmsg, 195 kcs_sendmsg, 196 kcs_recvmsg, 197 kcs_reset, 198 kcs_probe, 199 IPMI_MSG_DATASND, 200 IPMI_MSG_DATARCV, 201 }; 202 203 struct ipmi_if smic_if = { 204 "SMIC", 205 IPMI_IF_SMIC_NREGS, 206 cmn_buildmsg, 207 smic_sendmsg, 208 smic_recvmsg, 209 smic_reset, 210 smic_probe, 211 IPMI_MSG_DATASND, 212 IPMI_MSG_DATARCV, 213 }; 214 215 struct ipmi_if bt_if = { 216 "BT", 217 IPMI_IF_BT_NREGS, 218 bt_buildmsg, 219 bt_sendmsg, 220 bt_recvmsg, 221 bt_reset, 222 bt_probe, 223 IPMI_BTMSG_DATASND, 224 IPMI_BTMSG_DATARCV, 225 }; 226 227 struct ipmi_if *ipmi_get_if(int); 228 229 struct ipmi_if * 230 ipmi_get_if(int iftype) 231 { 232 switch (iftype) { 233 case IPMI_IF_KCS: 234 return (&kcs_if); 235 case IPMI_IF_SMIC: 236 return (&smic_if); 237 case IPMI_IF_BT: 238 return (&bt_if); 239 } 240 241 return (NULL); 242 } 243 244 /* 245 * BMC Helper Functions 246 */ 247 u_int8_t 248 bmc_read(struct ipmi_softc *sc, int offset) 249 { 250 if (sc->sc_if_iosize == 4) 251 return (bus_space_read_4(sc->sc_iot, sc->sc_ioh, 252 offset * sc->sc_if_iospacing)); 253 else 254 return (bus_space_read_1(sc->sc_iot, sc->sc_ioh, 255 offset * sc->sc_if_iospacing)); 256 } 257 258 void 259 bmc_write(struct ipmi_softc *sc, int offset, u_int8_t val) 260 { 261 if (sc->sc_if_iosize == 4) 262 bus_space_write_4(sc->sc_iot, sc->sc_ioh, 263 offset * sc->sc_if_iospacing, val); 264 else 265 bus_space_write_1(sc->sc_iot, sc->sc_ioh, 266 offset * sc->sc_if_iospacing, val); 267 } 268 269 int 270 bmc_io_wait(struct ipmi_softc *sc, struct ipmi_iowait *a) 271 { 272 volatile u_int8_t v; 273 int count = 5000000; /* == 5s XXX can be shorter */ 274 275 while (count--) { 276 v = bmc_read(sc, a->offset); 277 if ((v & a->mask) == a->value) 278 return v; 279 280 delay(1); 281 } 282 283 dbg_printf(1, "%s: bmc_io_wait fails : *v=%.2x m=%.2x b=%.2x %s\n", 284 DEVNAME(sc), v, a->mask, a->value, a->lbl); 285 return (-1); 286 287 } 288 289 #define RSSA_MASK 0xff 290 #define LUN_MASK 0x3 291 #define NETFN_LUN(nf,ln) (((nf) << 2) | ((ln) & LUN_MASK)) 292 293 /* 294 * BT interface 295 */ 296 #define _BT_CTRL_REG 0 297 #define BT_CLR_WR_PTR (1L << 0) 298 #define BT_CLR_RD_PTR (1L << 1) 299 #define BT_HOST2BMC_ATN (1L << 2) 300 #define BT_BMC2HOST_ATN (1L << 3) 301 #define BT_EVT_ATN (1L << 4) 302 #define BT_HOST_BUSY (1L << 6) 303 #define BT_BMC_BUSY (1L << 7) 304 305 #define BT_READY (BT_HOST_BUSY|BT_HOST2BMC_ATN|BT_BMC2HOST_ATN) 306 307 #define _BT_DATAIN_REG 1 308 #define _BT_DATAOUT_REG 1 309 310 #define _BT_INTMASK_REG 2 311 #define BT_IM_HIRQ_PEND (1L << 1) 312 #define BT_IM_SCI_EN (1L << 2) 313 #define BT_IM_SMI_EN (1L << 3) 314 #define BT_IM_NMI2SMI (1L << 4) 315 316 int bt_read(struct ipmi_softc *, int); 317 int bt_write(struct ipmi_softc *, int, uint8_t); 318 319 int 320 bt_read(struct ipmi_softc *sc, int reg) 321 { 322 return bmc_read(sc, reg); 323 } 324 325 int 326 bt_write(struct ipmi_softc *sc, int reg, uint8_t data) 327 { 328 struct ipmi_iowait a; 329 330 a.offset = _BT_CTRL_REG; 331 a.mask = BT_BMC_BUSY; 332 a.value = 0; 333 a.lbl = "bt_write"; 334 if (bmc_io_wait(sc, &a) < 0) 335 return (-1); 336 337 bmc_write(sc, reg, data); 338 return (0); 339 } 340 341 int 342 bt_sendmsg(struct ipmi_cmd *c) 343 { 344 struct ipmi_softc *sc = c->c_sc; 345 struct ipmi_iowait a; 346 int i; 347 348 bt_write(sc, _BT_CTRL_REG, BT_CLR_WR_PTR); 349 for (i = 0; i < c->c_txlen; i++) 350 bt_write(sc, _BT_DATAOUT_REG, sc->sc_buf[i]); 351 352 bt_write(sc, _BT_CTRL_REG, BT_HOST2BMC_ATN); 353 a.offset = _BT_CTRL_REG; 354 a.mask = BT_HOST2BMC_ATN | BT_BMC_BUSY; 355 a.value = 0; 356 a.lbl = "bt_sendwait"; 357 if (bmc_io_wait(sc, &a) < 0) 358 return (-1); 359 360 return (0); 361 } 362 363 int 364 bt_recvmsg(struct ipmi_cmd *c) 365 { 366 struct ipmi_softc *sc = c->c_sc; 367 struct ipmi_iowait a; 368 u_int8_t len, v, i, j; 369 370 a.offset = _BT_CTRL_REG; 371 a.mask = BT_BMC2HOST_ATN; 372 a.value = BT_BMC2HOST_ATN; 373 a.lbl = "bt_recvwait"; 374 if (bmc_io_wait(sc, &a) < 0) 375 return (-1); 376 377 bt_write(sc, _BT_CTRL_REG, BT_HOST_BUSY); 378 bt_write(sc, _BT_CTRL_REG, BT_BMC2HOST_ATN); 379 bt_write(sc, _BT_CTRL_REG, BT_CLR_RD_PTR); 380 len = bt_read(sc, _BT_DATAIN_REG); 381 for (i = IPMI_BTMSG_NFLN, j = 0; i <= len; i++) { 382 v = bt_read(sc, _BT_DATAIN_REG); 383 if (i != IPMI_BTMSG_SEQ) 384 *(sc->sc_buf + j++) = v; 385 } 386 bt_write(sc, _BT_CTRL_REG, BT_HOST_BUSY); 387 c->c_rxlen = len - 1; 388 389 return (0); 390 } 391 392 int 393 bt_reset(struct ipmi_softc *sc) 394 { 395 return (-1); 396 } 397 398 int 399 bt_probe(struct ipmi_softc *sc) 400 { 401 u_int8_t rv; 402 403 rv = bmc_read(sc, _BT_CTRL_REG); 404 rv &= BT_HOST_BUSY; 405 rv |= BT_CLR_WR_PTR|BT_CLR_RD_PTR|BT_BMC2HOST_ATN|BT_HOST2BMC_ATN; 406 bmc_write(sc, _BT_CTRL_REG, rv); 407 408 rv = bmc_read(sc, _BT_INTMASK_REG); 409 rv &= BT_IM_SCI_EN|BT_IM_SMI_EN|BT_IM_NMI2SMI; 410 rv |= BT_IM_HIRQ_PEND; 411 bmc_write(sc, _BT_INTMASK_REG, rv); 412 413 #if 0 414 printf("bt_probe: %2x\n", v); 415 printf(" WR : %2x\n", v & BT_CLR_WR_PTR); 416 printf(" RD : %2x\n", v & BT_CLR_RD_PTR); 417 printf(" H2B : %2x\n", v & BT_HOST2BMC_ATN); 418 printf(" B2H : %2x\n", v & BT_BMC2HOST_ATN); 419 printf(" EVT : %2x\n", v & BT_EVT_ATN); 420 printf(" HBSY : %2x\n", v & BT_HOST_BUSY); 421 printf(" BBSY : %2x\n", v & BT_BMC_BUSY); 422 #endif 423 return (0); 424 } 425 426 /* 427 * SMIC interface 428 */ 429 #define _SMIC_DATAIN_REG 0 430 #define _SMIC_DATAOUT_REG 0 431 432 #define _SMIC_CTRL_REG 1 433 #define SMS_CC_GET_STATUS 0x40 434 #define SMS_CC_START_TRANSFER 0x41 435 #define SMS_CC_NEXT_TRANSFER 0x42 436 #define SMS_CC_END_TRANSFER 0x43 437 #define SMS_CC_START_RECEIVE 0x44 438 #define SMS_CC_NEXT_RECEIVE 0x45 439 #define SMS_CC_END_RECEIVE 0x46 440 #define SMS_CC_TRANSFER_ABORT 0x47 441 442 #define SMS_SC_READY 0xc0 443 #define SMS_SC_WRITE_START 0xc1 444 #define SMS_SC_WRITE_NEXT 0xc2 445 #define SMS_SC_WRITE_END 0xc3 446 #define SMS_SC_READ_START 0xc4 447 #define SMS_SC_READ_NEXT 0xc5 448 #define SMS_SC_READ_END 0xc6 449 450 #define _SMIC_FLAG_REG 2 451 #define SMIC_BUSY (1L << 0) 452 #define SMIC_SMS_ATN (1L << 2) 453 #define SMIC_EVT_ATN (1L << 3) 454 #define SMIC_SMI (1L << 4) 455 #define SMIC_TX_DATA_RDY (1L << 6) 456 #define SMIC_RX_DATA_RDY (1L << 7) 457 458 int smic_wait(struct ipmi_softc *, u_int8_t, u_int8_t, const char *); 459 int smic_write_cmd_data(struct ipmi_softc *, u_int8_t, const u_int8_t *); 460 int smic_read_data(struct ipmi_softc *, u_int8_t *); 461 462 int 463 smic_wait(struct ipmi_softc *sc, u_int8_t mask, u_int8_t val, const char *lbl) 464 { 465 struct ipmi_iowait a; 466 int v; 467 468 /* Wait for expected flag bits */ 469 a.offset = _SMIC_FLAG_REG; 470 a.mask = mask; 471 a.value = val; 472 a.lbl = "smicwait"; 473 v = bmc_io_wait(sc, &a); 474 if (v < 0) 475 return (-1); 476 477 /* Return current status */ 478 v = bmc_read(sc, _SMIC_CTRL_REG); 479 dbg_printf(99, "smic_wait = %.2x\n", v); 480 return (v); 481 } 482 483 int 484 smic_write_cmd_data(struct ipmi_softc *sc, u_int8_t cmd, const u_int8_t *data) 485 { 486 int sts, v; 487 488 dbg_printf(50, "smic_wcd: %.2x %.2x\n", cmd, data ? *data : -1); 489 sts = smic_wait(sc, SMIC_TX_DATA_RDY | SMIC_BUSY, SMIC_TX_DATA_RDY, 490 "smic_write_cmd_data ready"); 491 if (sts < 0) 492 return (sts); 493 494 bmc_write(sc, _SMIC_CTRL_REG, cmd); 495 if (data) 496 bmc_write(sc, _SMIC_DATAOUT_REG, *data); 497 498 /* Toggle BUSY bit, then wait for busy bit to clear */ 499 v = bmc_read(sc, _SMIC_FLAG_REG); 500 bmc_write(sc, _SMIC_FLAG_REG, v | SMIC_BUSY); 501 502 return (smic_wait(sc, SMIC_BUSY, 0, "smic_write_cmd_data busy")); 503 } 504 505 int 506 smic_read_data(struct ipmi_softc *sc, u_int8_t *data) 507 { 508 int sts; 509 510 sts = smic_wait(sc, SMIC_RX_DATA_RDY | SMIC_BUSY, SMIC_RX_DATA_RDY, 511 "smic_read_data"); 512 if (sts >= 0) { 513 *data = bmc_read(sc, _SMIC_DATAIN_REG); 514 dbg_printf(50, "smic_readdata: %.2x\n", *data); 515 } 516 return (sts); 517 } 518 519 #define ErrStat(a,b) if (a) printf(b); 520 521 int 522 smic_sendmsg(struct ipmi_cmd *c) 523 { 524 struct ipmi_softc *sc = c->c_sc; 525 int sts, idx; 526 527 sts = smic_write_cmd_data(sc, SMS_CC_START_TRANSFER, &sc->sc_buf[0]); 528 ErrStat(sts != SMS_SC_WRITE_START, "wstart"); 529 for (idx = 1; idx < c->c_txlen - 1; idx++) { 530 sts = smic_write_cmd_data(sc, SMS_CC_NEXT_TRANSFER, 531 &sc->sc_buf[idx]); 532 ErrStat(sts != SMS_SC_WRITE_NEXT, "write"); 533 } 534 sts = smic_write_cmd_data(sc, SMS_CC_END_TRANSFER, &sc->sc_buf[idx]); 535 if (sts != SMS_SC_WRITE_END) { 536 dbg_printf(50, "smic_sendmsg %d/%d = %.2x\n", idx, c->c_txlen, sts); 537 return (-1); 538 } 539 540 return (0); 541 } 542 543 int 544 smic_recvmsg(struct ipmi_cmd *c) 545 { 546 struct ipmi_softc *sc = c->c_sc; 547 int sts, idx; 548 549 c->c_rxlen = 0; 550 sts = smic_wait(sc, SMIC_RX_DATA_RDY, SMIC_RX_DATA_RDY, "smic_recvmsg"); 551 if (sts < 0) 552 return (-1); 553 554 sts = smic_write_cmd_data(sc, SMS_CC_START_RECEIVE, NULL); 555 ErrStat(sts != SMS_SC_READ_START, "rstart"); 556 for (idx = 0;; ) { 557 sts = smic_read_data(sc, &sc->sc_buf[idx++]); 558 if (sts != SMS_SC_READ_START && sts != SMS_SC_READ_NEXT) 559 break; 560 smic_write_cmd_data(sc, SMS_CC_NEXT_RECEIVE, NULL); 561 } 562 ErrStat(sts != SMS_SC_READ_END, "rend"); 563 564 c->c_rxlen = idx; 565 566 sts = smic_write_cmd_data(sc, SMS_CC_END_RECEIVE, NULL); 567 if (sts != SMS_SC_READY) { 568 dbg_printf(50, "smic_recvmsg %d/%d = %.2x\n", idx, c->c_maxrxlen, sts); 569 return (-1); 570 } 571 572 return (0); 573 } 574 575 int 576 smic_reset(struct ipmi_softc *sc) 577 { 578 return (-1); 579 } 580 581 int 582 smic_probe(struct ipmi_softc *sc) 583 { 584 /* Flag register should not be 0xFF on a good system */ 585 if (bmc_read(sc, _SMIC_FLAG_REG) == 0xFF) 586 return (-1); 587 588 return (0); 589 } 590 591 /* 592 * KCS interface 593 */ 594 #define _KCS_DATAIN_REGISTER 0 595 #define _KCS_DATAOUT_REGISTER 0 596 #define KCS_READ_NEXT 0x68 597 598 #define _KCS_COMMAND_REGISTER 1 599 #define KCS_GET_STATUS 0x60 600 #define KCS_WRITE_START 0x61 601 #define KCS_WRITE_END 0x62 602 603 #define _KCS_STATUS_REGISTER 1 604 #define KCS_OBF (1L << 0) 605 #define KCS_IBF (1L << 1) 606 #define KCS_SMS_ATN (1L << 2) 607 #define KCS_CD (1L << 3) 608 #define KCS_OEM1 (1L << 4) 609 #define KCS_OEM2 (1L << 5) 610 #define KCS_STATE_MASK 0xc0 611 #define KCS_IDLE_STATE 0x00 612 #define KCS_READ_STATE 0x40 613 #define KCS_WRITE_STATE 0x80 614 #define KCS_ERROR_STATE 0xC0 615 616 int kcs_wait(struct ipmi_softc *, u_int8_t, u_int8_t, const char *); 617 int kcs_write_cmd(struct ipmi_softc *, u_int8_t); 618 int kcs_write_data(struct ipmi_softc *, u_int8_t); 619 int kcs_read_data(struct ipmi_softc *, u_int8_t *); 620 621 int 622 kcs_wait(struct ipmi_softc *sc, u_int8_t mask, u_int8_t value, const char *lbl) 623 { 624 struct ipmi_iowait a; 625 int v; 626 627 a.offset = _KCS_STATUS_REGISTER; 628 a.mask = mask; 629 a.value = value; 630 a.lbl = lbl; 631 v = bmc_io_wait(sc, &a); 632 if (v < 0) 633 return (v); 634 635 /* Check if output buffer full, read dummy byte */ 636 if ((v & (KCS_OBF | KCS_STATE_MASK)) == (KCS_OBF | KCS_WRITE_STATE)) 637 bmc_read(sc, _KCS_DATAIN_REGISTER); 638 639 /* Check for error state */ 640 if ((v & KCS_STATE_MASK) == KCS_ERROR_STATE) { 641 bmc_write(sc, _KCS_COMMAND_REGISTER, KCS_GET_STATUS); 642 while (bmc_read(sc, _KCS_STATUS_REGISTER) & KCS_IBF) 643 continue; 644 printf("%s: error code: %x\n", DEVNAME(sc), 645 bmc_read(sc, _KCS_DATAIN_REGISTER)); 646 } 647 648 return (v & KCS_STATE_MASK); 649 } 650 651 int 652 kcs_write_cmd(struct ipmi_softc *sc, u_int8_t cmd) 653 { 654 /* ASSERT: IBF and OBF are clear */ 655 dbg_printf(50, "kcswritecmd: %.2x\n", cmd); 656 bmc_write(sc, _KCS_COMMAND_REGISTER, cmd); 657 658 return (kcs_wait(sc, KCS_IBF, 0, "write_cmd")); 659 } 660 661 int 662 kcs_write_data(struct ipmi_softc *sc, u_int8_t data) 663 { 664 /* ASSERT: IBF and OBF are clear */ 665 dbg_printf(50, "kcswritedata: %.2x\n", data); 666 bmc_write(sc, _KCS_DATAOUT_REGISTER, data); 667 668 return (kcs_wait(sc, KCS_IBF, 0, "write_data")); 669 } 670 671 int 672 kcs_read_data(struct ipmi_softc *sc, u_int8_t * data) 673 { 674 int sts; 675 676 sts = kcs_wait(sc, KCS_IBF | KCS_OBF, KCS_OBF, "read_data"); 677 if (sts != KCS_READ_STATE) 678 return (sts); 679 680 /* ASSERT: OBF is set read data, request next byte */ 681 *data = bmc_read(sc, _KCS_DATAIN_REGISTER); 682 bmc_write(sc, _KCS_DATAOUT_REGISTER, KCS_READ_NEXT); 683 684 dbg_printf(50, "kcsreaddata: %.2x\n", *data); 685 686 return (sts); 687 } 688 689 /* Exported KCS functions */ 690 int 691 kcs_sendmsg(struct ipmi_cmd *c) 692 { 693 struct ipmi_softc *sc = c->c_sc; 694 int idx, sts; 695 696 /* ASSERT: IBF is clear */ 697 dbg_dump(50, "kcs sendmsg", c->c_txlen, sc->sc_buf); 698 sts = kcs_write_cmd(sc, KCS_WRITE_START); 699 for (idx = 0; idx < c->c_txlen; idx++) { 700 if (idx == c->c_txlen - 1) 701 sts = kcs_write_cmd(sc, KCS_WRITE_END); 702 703 if (sts != KCS_WRITE_STATE) 704 break; 705 706 sts = kcs_write_data(sc, sc->sc_buf[idx]); 707 } 708 if (sts != KCS_READ_STATE) { 709 dbg_printf(1, "kcs sendmsg = %d/%d <%.2x>\n", idx, c->c_txlen, sts); 710 dbg_dump(1, "kcs_sendmsg", c->c_txlen, sc->sc_buf); 711 return (-1); 712 } 713 714 return (0); 715 } 716 717 int 718 kcs_recvmsg(struct ipmi_cmd *c) 719 { 720 struct ipmi_softc *sc = c->c_sc; 721 int idx, sts; 722 723 for (idx = 0; idx < c->c_maxrxlen; idx++) { 724 sts = kcs_read_data(sc, &sc->sc_buf[idx]); 725 if (sts != KCS_READ_STATE) 726 break; 727 } 728 sts = kcs_wait(sc, KCS_IBF, 0, "recv"); 729 c->c_rxlen = idx; 730 if (sts != KCS_IDLE_STATE) { 731 dbg_printf(1, "kcs recvmsg = %d/%d <%.2x>\n", idx, c->c_maxrxlen, sts); 732 return (-1); 733 } 734 735 dbg_dump(50, "kcs recvmsg", idx, sc->sc_buf); 736 737 return (0); 738 } 739 740 int 741 kcs_reset(struct ipmi_softc *sc) 742 { 743 return (-1); 744 } 745 746 int 747 kcs_probe(struct ipmi_softc *sc) 748 { 749 u_int8_t v; 750 751 v = bmc_read(sc, _KCS_STATUS_REGISTER); 752 if ((v & KCS_STATE_MASK) == KCS_ERROR_STATE) 753 return (1); 754 #if 0 755 printf("kcs_probe: %2x\n", v); 756 printf(" STS: %2x\n", v & KCS_STATE_MASK); 757 printf(" ATN: %2x\n", v & KCS_SMS_ATN); 758 printf(" C/D: %2x\n", v & KCS_CD); 759 printf(" IBF: %2x\n", v & KCS_IBF); 760 printf(" OBF: %2x\n", v & KCS_OBF); 761 #endif 762 return (0); 763 } 764 765 /* 766 * IPMI code 767 */ 768 #define READ_SMS_BUFFER 0x37 769 #define WRITE_I2C 0x50 770 771 #define GET_MESSAGE_CMD 0x33 772 #define SEND_MESSAGE_CMD 0x34 773 774 #define IPMB_CHANNEL_NUMBER 0 775 776 #define PUBLIC_BUS 0 777 778 #define MIN_I2C_PACKET_SIZE 3 779 #define MIN_IMB_PACKET_SIZE 7 /* one byte for cksum */ 780 781 #define MIN_BTBMC_REQ_SIZE 4 782 #define MIN_BTBMC_RSP_SIZE 5 783 #define MIN_BMC_REQ_SIZE 2 784 #define MIN_BMC_RSP_SIZE 3 785 786 #define BMC_SA 0x20 /* BMC/ESM3 */ 787 #define FPC_SA 0x22 /* front panel */ 788 #define BP_SA 0xC0 /* Primary Backplane */ 789 #define BP2_SA 0xC2 /* Secondary Backplane */ 790 #define PBP_SA 0xC4 /* Peripheral Backplane */ 791 #define DRAC_SA 0x28 /* DRAC-III */ 792 #define DRAC3_SA 0x30 /* DRAC-III */ 793 #define BMC_LUN 0 794 #define SMS_LUN 2 795 796 struct ipmi_request { 797 u_int8_t rsSa; 798 u_int8_t rsLun; 799 u_int8_t netFn; 800 u_int8_t cmd; 801 u_int8_t data_len; 802 u_int8_t *data; 803 }; 804 805 struct ipmi_response { 806 u_int8_t cCode; 807 u_int8_t data_len; 808 u_int8_t *data; 809 }; 810 811 struct ipmi_bmc_request { 812 u_int8_t bmc_nfLn; 813 u_int8_t bmc_cmd; 814 u_int8_t bmc_data_len; 815 u_int8_t bmc_data[1]; 816 }; 817 818 struct ipmi_bmc_response { 819 u_int8_t bmc_nfLn; 820 u_int8_t bmc_cmd; 821 u_int8_t bmc_cCode; 822 u_int8_t bmc_data_len; 823 u_int8_t bmc_data[1]; 824 }; 825 826 struct cfdriver ipmi_cd = { 827 NULL, "ipmi", DV_DULL 828 }; 829 830 void 831 dumpb(const char *lbl, int len, const u_int8_t *data) 832 { 833 int idx; 834 835 printf("%s: ", lbl); 836 for (idx = 0; idx < len; idx++) 837 printf("%.2x ", data[idx]); 838 839 printf("\n"); 840 } 841 842 /* 843 * bt_buildmsg builds an IPMI message from a nfLun, cmd, and data 844 * This is used by BT protocol 845 */ 846 void 847 bt_buildmsg(struct ipmi_cmd *c) 848 { 849 struct ipmi_softc *sc = c->c_sc; 850 u_int8_t *buf = sc->sc_buf; 851 852 buf[IPMI_BTMSG_LEN] = c->c_txlen + (IPMI_BTMSG_DATASND - 1); 853 buf[IPMI_BTMSG_NFLN] = NETFN_LUN(c->c_netfn, c->c_rslun); 854 buf[IPMI_BTMSG_SEQ] = sc->sc_btseq++; 855 buf[IPMI_BTMSG_CMD] = c->c_cmd; 856 if (c->c_txlen && c->c_data) 857 memcpy(buf + IPMI_BTMSG_DATASND, c->c_data, c->c_txlen); 858 } 859 860 /* 861 * cmn_buildmsg builds an IPMI message from a nfLun, cmd, and data 862 * This is used by both SMIC and KCS protocols 863 */ 864 void 865 cmn_buildmsg(struct ipmi_cmd *c) 866 { 867 struct ipmi_softc *sc = c->c_sc; 868 u_int8_t *buf = sc->sc_buf; 869 870 buf[IPMI_MSG_NFLN] = NETFN_LUN(c->c_netfn, c->c_rslun); 871 buf[IPMI_MSG_CMD] = c->c_cmd; 872 if (c->c_txlen && c->c_data) 873 memcpy(buf + IPMI_MSG_DATASND, c->c_data, c->c_txlen); 874 } 875 876 /* Send an IPMI command */ 877 int 878 ipmi_sendcmd(struct ipmi_cmd *c) 879 { 880 struct ipmi_softc *sc = c->c_sc; 881 int rc = -1; 882 883 dbg_printf(50, "ipmi_sendcmd: rssa=%.2x nfln=%.2x cmd=%.2x len=%.2x\n", 884 c->c_rssa, NETFN_LUN(c->c_netfn, c->c_rslun), c->c_cmd, c->c_txlen); 885 dbg_dump(10, " send", c->c_txlen, c->c_data); 886 if (c->c_rssa != BMC_SA) { 887 #if 0 888 sc->sc_if->buildmsg(c); 889 pI2C->bus = (sc->if_ver == 0x09) ? 890 PUBLIC_BUS : 891 IPMB_CHANNEL_NUMBER; 892 893 imbreq->rsSa = rssa; 894 imbreq->nfLn = NETFN_LUN(netfn, rslun); 895 imbreq->cSum1 = -(imbreq->rsSa + imbreq->nfLn); 896 imbreq->rqSa = BMC_SA; 897 imbreq->seqLn = NETFN_LUN(sc->imb_seq++, SMS_LUN); 898 imbreq->cmd = cmd; 899 if (txlen) 900 memcpy(imbreq->data, data, txlen); 901 /* Set message checksum */ 902 imbreq->data[txlen] = cksum8(&imbreq->rqSa, txlen + 3); 903 #endif 904 goto done; 905 } else 906 sc->sc_if->buildmsg(c); 907 908 c->c_txlen += sc->sc_if->datasnd; 909 rc = sc->sc_if->sendmsg(c); 910 911 done: 912 return (rc); 913 } 914 915 /* Receive an IPMI command */ 916 int 917 ipmi_recvcmd(struct ipmi_cmd *c) 918 { 919 struct ipmi_softc *sc = c->c_sc; 920 u_int8_t *buf = sc->sc_buf, rc = 0; 921 922 /* Receive message from interface, copy out result data */ 923 c->c_maxrxlen += sc->sc_if->datarcv; 924 if (sc->sc_if->recvmsg(c) || 925 c->c_rxlen < sc->sc_if->datarcv) { 926 return (-1); 927 } 928 929 c->c_rxlen -= sc->sc_if->datarcv; 930 if (c->c_rxlen > 0 && c->c_data) 931 memcpy(c->c_data, buf + sc->sc_if->datarcv, c->c_rxlen); 932 933 rc = buf[IPMI_MSG_CCODE]; 934 #ifdef IPMI_DEBUG 935 if (rc != 0) 936 dbg_printf(1, "ipmi_recvcmd: nfln=%.2x cmd=%.2x err=%.2x\n", 937 buf[IPMI_MSG_NFLN], buf[IPMI_MSG_CMD], buf[IPMI_MSG_CCODE]); 938 #endif 939 940 dbg_printf(50, "ipmi_recvcmd: nfln=%.2x cmd=%.2x err=%.2x len=%.2x\n", 941 buf[IPMI_MSG_NFLN], buf[IPMI_MSG_CMD], buf[IPMI_MSG_CCODE], 942 c->c_rxlen); 943 dbg_dump(10, " recv", c->c_rxlen, c->c_data); 944 945 return (rc); 946 } 947 948 void 949 ipmi_cmd(struct ipmi_cmd *c) 950 { 951 if (cold || panicstr != NULL) 952 ipmi_cmd_poll(c); 953 else 954 ipmi_cmd_wait(c); 955 } 956 957 void 958 ipmi_cmd_poll(struct ipmi_cmd *c) 959 { 960 if ((c->c_ccode = ipmi_sendcmd(c))) 961 printf("%s: sendcmd fails\n", DEVNAME(c->c_sc)); 962 else 963 c->c_ccode = ipmi_recvcmd(c); 964 } 965 966 void 967 ipmi_cmd_wait(struct ipmi_cmd *c) 968 { 969 struct task t; 970 int res; 971 972 task_set(&t, ipmi_cmd_wait_cb, c); 973 res = task_add(c->c_sc->sc_cmd_taskq, &t); 974 KASSERT(res == 1); 975 976 tsleep_nsec(c, PWAIT, "ipmicmd", INFSLP); 977 978 res = task_del(c->c_sc->sc_cmd_taskq, &t); 979 KASSERT(res == 0); 980 } 981 982 void 983 ipmi_cmd_wait_cb(void *arg) 984 { 985 struct ipmi_cmd *c = arg; 986 987 ipmi_cmd_poll(c); 988 wakeup(c); 989 } 990 991 /* Read a partial SDR entry */ 992 int 993 get_sdr_partial(struct ipmi_softc *sc, u_int16_t recordId, u_int16_t reserveId, 994 u_int8_t offset, u_int8_t length, void *buffer, u_int16_t *nxtRecordId) 995 { 996 u_int8_t cmd[IPMI_GET_WDOG_MAX + 255]; /* 8 + max of length */ 997 int len; 998 999 ((u_int16_t *) cmd)[0] = reserveId; 1000 ((u_int16_t *) cmd)[1] = recordId; 1001 cmd[4] = offset; 1002 cmd[5] = length; 1003 1004 struct ipmi_cmd c; 1005 c.c_sc = sc; 1006 c.c_rssa = BMC_SA; 1007 c.c_rslun = BMC_LUN; 1008 c.c_netfn = STORAGE_NETFN; 1009 c.c_cmd = STORAGE_GET_SDR; 1010 c.c_txlen = IPMI_SET_WDOG_MAX; 1011 c.c_rxlen = 0; 1012 c.c_maxrxlen = 8 + length; 1013 c.c_data = cmd; 1014 ipmi_cmd(&c); 1015 len = c.c_rxlen; 1016 1017 if (nxtRecordId) 1018 *nxtRecordId = *(uint16_t *) cmd; 1019 if (len > 2) 1020 memcpy(buffer, cmd + 2, len - 2); 1021 else 1022 return (1); 1023 1024 return (0); 1025 } 1026 1027 int maxsdrlen = 0x10; 1028 1029 /* Read an entire SDR; pass to add sensor */ 1030 int 1031 get_sdr(struct ipmi_softc *sc, u_int16_t recid, u_int16_t *nxtrec) 1032 { 1033 u_int16_t resid = 0; 1034 int len, sdrlen, offset; 1035 u_int8_t *psdr; 1036 struct sdrhdr shdr; 1037 1038 /* Reserve SDR */ 1039 struct ipmi_cmd c; 1040 c.c_sc = sc; 1041 c.c_rssa = BMC_SA; 1042 c.c_rslun = BMC_LUN; 1043 c.c_netfn = STORAGE_NETFN; 1044 c.c_cmd = STORAGE_RESERVE_SDR; 1045 c.c_txlen = 0; 1046 c.c_maxrxlen = sizeof(resid); 1047 c.c_rxlen = 0; 1048 c.c_data = &resid; 1049 ipmi_cmd(&c); 1050 1051 /* Get SDR Header */ 1052 if (get_sdr_partial(sc, recid, resid, 0, sizeof shdr, &shdr, nxtrec)) { 1053 printf("%s: get header fails\n", DEVNAME(sc)); 1054 return (1); 1055 } 1056 /* Allocate space for entire SDR Length of SDR in header does not 1057 * include header length */ 1058 sdrlen = sizeof(shdr) + shdr.record_length; 1059 psdr = malloc(sdrlen, M_DEVBUF, M_NOWAIT); 1060 if (psdr == NULL) 1061 return (1); 1062 1063 memcpy(psdr, &shdr, sizeof(shdr)); 1064 1065 /* Read SDR Data maxsdrlen bytes at a time */ 1066 for (offset = sizeof(shdr); offset < sdrlen; offset += maxsdrlen) { 1067 len = sdrlen - offset; 1068 if (len > maxsdrlen) 1069 len = maxsdrlen; 1070 1071 if (get_sdr_partial(sc, recid, resid, offset, len, 1072 psdr + offset, NULL)) { 1073 printf("%s: get chunk: %d,%d fails\n", DEVNAME(sc), 1074 offset, len); 1075 free(psdr, M_DEVBUF, sdrlen); 1076 return (1); 1077 } 1078 } 1079 1080 /* Add SDR to sensor list, if not wanted, free buffer */ 1081 if (add_sdr_sensor(sc, psdr, sdrlen) == 0) 1082 free(psdr, M_DEVBUF, sdrlen); 1083 1084 return (0); 1085 } 1086 1087 int 1088 getbits(u_int8_t *bytes, int bitpos, int bitlen) 1089 { 1090 int v; 1091 int mask; 1092 1093 bitpos += bitlen - 1; 1094 for (v = 0; bitlen--;) { 1095 v <<= 1; 1096 mask = 1L << (bitpos & 7); 1097 if (bytes[bitpos >> 3] & mask) 1098 v |= 1; 1099 bitpos--; 1100 } 1101 1102 return (v); 1103 } 1104 1105 /* Decode IPMI sensor name */ 1106 int 1107 ipmi_sensor_name(char *name, int len, u_int8_t typelen, u_int8_t *bits, 1108 int bitslen) 1109 { 1110 int i, slen; 1111 char bcdplus[] = "0123456789 -.:,_"; 1112 1113 slen = typelen & 0x1F; 1114 switch (typelen >> 6) { 1115 case IPMI_NAME_UNICODE: 1116 //unicode 1117 break; 1118 1119 case IPMI_NAME_BCDPLUS: 1120 /* Characters are encoded in 4-bit BCDPLUS */ 1121 if (len < slen * 2 + 1) 1122 slen = (len >> 1) - 1; 1123 if (slen > bitslen) 1124 return (0); 1125 for (i = 0; i < slen; i++) { 1126 *(name++) = bcdplus[bits[i] >> 4]; 1127 *(name++) = bcdplus[bits[i] & 0xF]; 1128 } 1129 break; 1130 1131 case IPMI_NAME_ASCII6BIT: 1132 /* Characters are encoded in 6-bit ASCII 1133 * 0x00 - 0x3F maps to 0x20 - 0x5F */ 1134 /* XXX: need to calculate max len: slen = 3/4 * len */ 1135 if (len < slen + 1) 1136 slen = len - 1; 1137 if (slen * 6 / 8 > bitslen) 1138 return (0); 1139 for (i = 0; i < slen * 8; i += 6) { 1140 *(name++) = getbits(bits, i, 6) + ' '; 1141 } 1142 break; 1143 1144 case IPMI_NAME_ASCII8BIT: 1145 /* Characters are 8-bit ascii */ 1146 if (len < slen + 1) 1147 slen = len - 1; 1148 if (slen > bitslen) 1149 return (0); 1150 while (slen--) 1151 *(name++) = *(bits++); 1152 break; 1153 } 1154 *name = 0; 1155 1156 return (1); 1157 } 1158 1159 /* Calculate val * 10^exp */ 1160 long 1161 ipow(long val, int exp) 1162 { 1163 while (exp > 0) { 1164 val *= 10; 1165 exp--; 1166 } 1167 1168 while (exp < 0) { 1169 val /= 10; 1170 exp++; 1171 } 1172 1173 return (val); 1174 } 1175 1176 /* Sign extend a n-bit value */ 1177 long 1178 signextend(unsigned long val, int bits) 1179 { 1180 long msk = (1L << (bits-1))-1; 1181 1182 return (-(val & ~msk) | val); 1183 } 1184 1185 /* Convert IPMI reading from sensor factors */ 1186 long 1187 ipmi_convert(u_int8_t v, struct sdrtype1 *s1, long adj) 1188 { 1189 int16_t M, B; 1190 int8_t K1, K2; 1191 long val; 1192 1193 /* Calculate linear reading variables */ 1194 M = signextend((((short)(s1->m_tolerance & 0xC0)) << 2) + s1->m, 10); 1195 B = signextend((((short)(s1->b_accuracy & 0xC0)) << 2) + s1->b, 10); 1196 K1 = signextend(s1->rbexp & 0xF, 4); 1197 K2 = signextend(s1->rbexp >> 4, 4); 1198 1199 /* Calculate sensor reading: 1200 * y = L((M * v + (B * 10^K1)) * 10^(K2+adj) 1201 * 1202 * This commutes out to: 1203 * y = L(M*v * 10^(K2+adj) + B * 10^(K1+K2+adj)); */ 1204 val = ipow(M * v, K2 + adj) + ipow(B, K1 + K2 + adj); 1205 1206 /* Linearization function: y = f(x) 0 : y = x 1 : y = ln(x) 2 : y = 1207 * log10(x) 3 : y = log2(x) 4 : y = e^x 5 : y = 10^x 6 : y = 2^x 7 : y 1208 * = 1/x 8 : y = x^2 9 : y = x^3 10 : y = square root(x) 11 : y = cube 1209 * root(x) */ 1210 return (val); 1211 } 1212 1213 int 1214 ipmi_sensor_status(struct ipmi_softc *sc, struct ipmi_sensor *psensor, 1215 u_int8_t *reading) 1216 { 1217 struct sdrtype1 *s1 = (struct sdrtype1 *)psensor->i_sdr; 1218 int etype; 1219 1220 /* Get reading of sensor */ 1221 switch (psensor->i_sensor.type) { 1222 case SENSOR_TEMP: 1223 psensor->i_sensor.value = ipmi_convert(reading[0], s1, 6); 1224 psensor->i_sensor.value += 273150000; 1225 break; 1226 1227 case SENSOR_VOLTS_DC: 1228 case SENSOR_VOLTS_AC: 1229 case SENSOR_AMPS: 1230 case SENSOR_WATTS: 1231 psensor->i_sensor.value = ipmi_convert(reading[0], s1, 6); 1232 break; 1233 1234 case SENSOR_FANRPM: 1235 psensor->i_sensor.value = ipmi_convert(reading[0], s1, 0); 1236 if (((s1->units1>>3)&0x7) == 0x3) 1237 psensor->i_sensor.value *= 60; // RPS -> RPM 1238 break; 1239 default: 1240 break; 1241 } 1242 1243 /* Return Sensor Status */ 1244 etype = (psensor->etype << 8) + psensor->stype; 1245 switch (etype) { 1246 case IPMI_SENSOR_TYPE_TEMP: 1247 case IPMI_SENSOR_TYPE_VOLT: 1248 case IPMI_SENSOR_TYPE_CURRENT: 1249 case IPMI_SENSOR_TYPE_FAN: 1250 /* non-recoverable threshold */ 1251 if (reading[2] & ((1 << 5) | (1 << 2))) 1252 return (SENSOR_S_CRIT); 1253 /* critical threshold */ 1254 else if (reading[2] & ((1 << 4) | (1 << 1))) 1255 return (SENSOR_S_CRIT); 1256 /* non-critical threshold */ 1257 else if (reading[2] & ((1 << 3) | (1 << 0))) 1258 return (SENSOR_S_WARN); 1259 break; 1260 1261 case IPMI_SENSOR_TYPE_INTRUSION: 1262 psensor->i_sensor.value = (reading[2] & 1) ? 1 : 0; 1263 if (reading[2] & 0x1) 1264 return (SENSOR_S_CRIT); 1265 break; 1266 1267 case IPMI_SENSOR_TYPE_PWRSUPPLY: 1268 /* Reading: 1 = present+powered, 0 = otherwise */ 1269 psensor->i_sensor.value = (reading[2] & 1) ? 1 : 0; 1270 if (reading[2] & 0x10) { 1271 /* XXX: Need sysctl type for Power Supply types 1272 * ok: power supply installed && powered 1273 * warn: power supply installed && !powered 1274 * crit: power supply !installed 1275 */ 1276 return (SENSOR_S_CRIT); 1277 } 1278 if (reading[2] & 0x08) { 1279 /* Power supply AC lost */ 1280 return (SENSOR_S_WARN); 1281 } 1282 break; 1283 } 1284 1285 return (SENSOR_S_OK); 1286 } 1287 1288 int 1289 read_sensor(struct ipmi_softc *sc, struct ipmi_sensor *psensor) 1290 { 1291 struct sdrtype1 *s1 = (struct sdrtype1 *) psensor->i_sdr; 1292 u_int8_t data[8]; 1293 int rv = -1; 1294 1295 memset(data, 0, sizeof(data)); 1296 data[0] = psensor->i_num; 1297 1298 struct ipmi_cmd c; 1299 c.c_sc = sc; 1300 c.c_rssa = s1->owner_id; 1301 c.c_rslun = s1->owner_lun; 1302 c.c_netfn = SE_NETFN; 1303 c.c_cmd = SE_GET_SENSOR_READING; 1304 c.c_txlen = 1; 1305 c.c_maxrxlen = sizeof(data); 1306 c.c_rxlen = 0; 1307 c.c_data = data; 1308 ipmi_cmd(&c); 1309 1310 if (c.c_ccode != 0) { 1311 dbg_printf(1, "sensor reading command for %s failed: %.2x\n", 1312 psensor->i_sensor.desc, c.c_ccode); 1313 return (rv); 1314 } 1315 dbg_printf(10, "values=%.2x %.2x %.2x %.2x %s\n", 1316 data[0],data[1],data[2],data[3], psensor->i_sensor.desc); 1317 psensor->i_sensor.flags &= ~SENSOR_FINVALID; 1318 if ((data[1] & IPMI_INVALID_SENSOR) || 1319 ((data[1] & IPMI_DISABLED_SENSOR) == 0 && data[0] == 0)) 1320 psensor->i_sensor.flags |= SENSOR_FINVALID; 1321 psensor->i_sensor.status = ipmi_sensor_status(sc, psensor, data); 1322 rv = 0; 1323 return (rv); 1324 } 1325 1326 int 1327 ipmi_sensor_type(int type, int ext_type, int units2, int entity) 1328 { 1329 switch (units2) { 1330 case IPMI_UNIT_TYPE_AMPS: 1331 return (SENSOR_AMPS); 1332 1333 case IPMI_UNIT_TYPE_RPM: 1334 return (SENSOR_FANRPM); 1335 1336 /* XXX sensors framework distinguishes AC/DC but ipmi does not */ 1337 case IPMI_UNIT_TYPE_VOLTS: 1338 return (SENSOR_VOLTS_DC); 1339 1340 case IPMI_UNIT_TYPE_WATTS: 1341 return (SENSOR_WATTS); 1342 } 1343 1344 switch (ext_type << 8L | type) { 1345 case IPMI_SENSOR_TYPE_TEMP: 1346 return (SENSOR_TEMP); 1347 1348 case IPMI_SENSOR_TYPE_PWRSUPPLY: 1349 if (entity == IPMI_ENTITY_PWRSUPPLY) 1350 return (SENSOR_INDICATOR); 1351 break; 1352 1353 case IPMI_SENSOR_TYPE_INTRUSION: 1354 return (SENSOR_INDICATOR); 1355 } 1356 1357 return (-1); 1358 } 1359 1360 /* Add Sensor to BSD Sysctl interface */ 1361 int 1362 add_sdr_sensor(struct ipmi_softc *sc, u_int8_t *psdr, int sdrlen) 1363 { 1364 int rc; 1365 struct sdrtype1 *s1 = (struct sdrtype1 *)psdr; 1366 struct sdrtype2 *s2 = (struct sdrtype2 *)psdr; 1367 char name[64]; 1368 1369 switch (s1->sdrhdr.record_type) { 1370 case IPMI_SDR_TYPEFULL: 1371 rc = ipmi_sensor_name(name, sizeof(name), s1->typelen, 1372 s1->name, sdrlen - (int)offsetof(struct sdrtype1, name)); 1373 if (rc == 0) 1374 return (0); 1375 rc = add_child_sensors(sc, psdr, 1, s1->sensor_num, 1376 s1->sensor_type, s1->event_code, 0, s1->entity_id, name); 1377 break; 1378 1379 case IPMI_SDR_TYPECOMPACT: 1380 rc = ipmi_sensor_name(name, sizeof(name), s2->typelen, 1381 s2->name, sdrlen - (int)offsetof(struct sdrtype2, name)); 1382 if (rc == 0) 1383 return (0); 1384 rc = add_child_sensors(sc, psdr, s2->share1 & 0xF, 1385 s2->sensor_num, s2->sensor_type, s2->event_code, 1386 s2->share2 & 0x7F, s2->entity_id, name); 1387 break; 1388 1389 default: 1390 return (0); 1391 } 1392 1393 return rc; 1394 } 1395 1396 int 1397 add_child_sensors(struct ipmi_softc *sc, u_int8_t *psdr, int count, 1398 int sensor_num, int sensor_type, int ext_type, int sensor_base, 1399 int entity, const char *name) 1400 { 1401 int typ, idx, rc = 0; 1402 struct ipmi_sensor *psensor; 1403 struct sdrtype1 *s1 = (struct sdrtype1 *)psdr; 1404 1405 typ = ipmi_sensor_type(sensor_type, ext_type, s1->units2, entity); 1406 if (typ == -1) { 1407 dbg_printf(5, "Unknown sensor type:%.2x et:%.2x sn:%.2x " 1408 "units2:%u name:%s\n", sensor_type, ext_type, sensor_num, 1409 s1->units2, name); 1410 return 0; 1411 } 1412 for (idx = 0; idx < count; idx++) { 1413 psensor = malloc(sizeof(*psensor), M_DEVBUF, M_NOWAIT | M_ZERO); 1414 if (psensor == NULL) 1415 break; 1416 1417 /* Initialize BSD Sensor info */ 1418 psensor->i_sdr = psdr; 1419 psensor->i_num = sensor_num + idx; 1420 psensor->stype = sensor_type; 1421 psensor->etype = ext_type; 1422 psensor->i_sensor.type = typ; 1423 if (count > 1) 1424 snprintf(psensor->i_sensor.desc, 1425 sizeof(psensor->i_sensor.desc), 1426 "%s - %d", name, sensor_base + idx); 1427 else 1428 strlcpy(psensor->i_sensor.desc, name, 1429 sizeof(psensor->i_sensor.desc)); 1430 1431 dbg_printf(5, "add sensor:%.4x %.2x:%d ent:%.2x:%.2x %s\n", 1432 s1->sdrhdr.record_id, s1->sensor_type, 1433 typ, s1->entity_id, s1->entity_instance, 1434 psensor->i_sensor.desc); 1435 if (read_sensor(sc, psensor) == 0) { 1436 SLIST_INSERT_HEAD(&ipmi_sensor_list, psensor, list); 1437 sensor_attach(&sc->sc_sensordev, &psensor->i_sensor); 1438 dbg_printf(5, " reading: %lld [%s]\n", 1439 psensor->i_sensor.value, 1440 psensor->i_sensor.desc); 1441 rc = 1; 1442 } else 1443 free(psensor, M_DEVBUF, sizeof(*psensor)); 1444 } 1445 1446 return (rc); 1447 } 1448 1449 /* Handle IPMI Timer - reread sensor values */ 1450 void 1451 ipmi_refresh_sensors(struct ipmi_softc *sc) 1452 { 1453 if (SLIST_EMPTY(&ipmi_sensor_list)) 1454 return; 1455 1456 sc->current_sensor = SLIST_NEXT(sc->current_sensor, list); 1457 if (sc->current_sensor == NULL) 1458 sc->current_sensor = SLIST_FIRST(&ipmi_sensor_list); 1459 1460 if (read_sensor(sc, sc->current_sensor)) { 1461 dbg_printf(1, "%s: error reading: %s\n", DEVNAME(sc), 1462 sc->current_sensor->i_sensor.desc); 1463 return; 1464 } 1465 } 1466 1467 int 1468 ipmi_map_regs(struct ipmi_softc *sc, struct ipmi_attach_args *ia) 1469 { 1470 if (sc->sc_if && sc->sc_if->nregs == 0) 1471 return (0); 1472 1473 sc->sc_if = ipmi_get_if(ia->iaa_if_type); 1474 if (sc->sc_if == NULL) 1475 return (-1); 1476 1477 if (ia->iaa_if_iotype == 'i') 1478 sc->sc_iot = ia->iaa_iot; 1479 else 1480 sc->sc_iot = ia->iaa_memt; 1481 1482 sc->sc_if_rev = ia->iaa_if_rev; 1483 sc->sc_if_iosize = ia->iaa_if_iosize; 1484 sc->sc_if_iospacing = ia->iaa_if_iospacing; 1485 if (bus_space_map(sc->sc_iot, ia->iaa_if_iobase, 1486 sc->sc_if->nregs * sc->sc_if_iospacing, 1487 0, &sc->sc_ioh)) { 1488 printf("%s: bus_space_map(%lx %lx %x 0 %p) failed\n", 1489 DEVNAME(sc), 1490 (unsigned long)sc->sc_iot, ia->iaa_if_iobase, 1491 sc->sc_if->nregs * sc->sc_if_iospacing, &sc->sc_ioh); 1492 return (-1); 1493 } 1494 return (0); 1495 } 1496 1497 void 1498 ipmi_unmap_regs(struct ipmi_softc *sc) 1499 { 1500 if (sc->sc_if->nregs > 0) { 1501 bus_space_unmap(sc->sc_iot, sc->sc_ioh, 1502 sc->sc_if->nregs * sc->sc_if_iospacing); 1503 } 1504 } 1505 1506 void 1507 ipmi_poll_thread(void *arg) 1508 { 1509 struct ipmi_thread *thread = arg; 1510 struct ipmi_softc *sc = thread->sc; 1511 u_int16_t rec; 1512 1513 /* Scan SDRs, add sensors */ 1514 for (rec = 0; rec != 0xFFFF;) { 1515 if (get_sdr(sc, rec, &rec)) { 1516 ipmi_unmap_regs(sc); 1517 printf("%s: no SDRs IPMI disabled\n", DEVNAME(sc)); 1518 goto done; 1519 } 1520 tsleep_nsec(sc, PWAIT, "ipmirun", MSEC_TO_NSEC(1)); 1521 } 1522 1523 /* initialize sensor list for thread */ 1524 if (SLIST_EMPTY(&ipmi_sensor_list)) 1525 goto done; 1526 else 1527 sc->current_sensor = SLIST_FIRST(&ipmi_sensor_list); 1528 1529 strlcpy(sc->sc_sensordev.xname, sc->sc_dev.dv_xname, 1530 sizeof(sc->sc_sensordev.xname)); 1531 sensordev_install(&sc->sc_sensordev); 1532 1533 while (thread->running) { 1534 ipmi_refresh_sensors(sc); 1535 tsleep_nsec(thread, PWAIT, "ipmi_poll", 1536 SEC_TO_NSEC(SENSOR_REFRESH_RATE)); 1537 } 1538 1539 done: 1540 kthread_exit(0); 1541 } 1542 1543 void 1544 ipmi_create_thread(void *arg) 1545 { 1546 struct ipmi_softc *sc = arg; 1547 1548 if (kthread_create(ipmi_poll_thread, sc->sc_thread, NULL, 1549 DEVNAME(sc)) != 0) { 1550 printf("%s: unable to create run thread, ipmi disabled\n", 1551 DEVNAME(sc)); 1552 return; 1553 } 1554 } 1555 1556 void 1557 ipmi_attach_common(struct ipmi_softc *sc, struct ipmi_attach_args *ia) 1558 { 1559 struct ipmi_cmd *c = &sc->sc_ioctl.cmd; 1560 1561 /* Map registers */ 1562 ipmi_map_regs(sc, ia); 1563 1564 sc->sc_thread = malloc(sizeof(struct ipmi_thread), M_DEVBUF, M_NOWAIT); 1565 if (sc->sc_thread == NULL) { 1566 printf(": unable to allocate thread\n"); 1567 return; 1568 } 1569 sc->sc_thread->sc = sc; 1570 sc->sc_thread->running = 1; 1571 1572 /* Setup threads */ 1573 kthread_create_deferred(ipmi_create_thread, sc); 1574 1575 printf(": version %d.%d interface %s", 1576 ia->iaa_if_rev >> 4, ia->iaa_if_rev & 0xF, sc->sc_if->name); 1577 if (sc->sc_if->nregs > 0) 1578 printf(" %sbase 0x%lx/%x spacing %d", 1579 ia->iaa_if_iotype == 'i' ? "io" : "mem", ia->iaa_if_iobase, 1580 ia->iaa_if_iospacing * sc->sc_if->nregs, 1581 ia->iaa_if_iospacing); 1582 if (ia->iaa_if_irq != -1) 1583 printf(" irq %d", ia->iaa_if_irq); 1584 printf("\n"); 1585 1586 /* setup flag to exclude iic */ 1587 ipmi_enabled = 1; 1588 1589 /* Setup Watchdog timer */ 1590 sc->sc_wdog_period = 0; 1591 task_set(&sc->sc_wdog_tickle_task, ipmi_watchdog_tickle, sc); 1592 wdog_register(ipmi_watchdog, sc); 1593 1594 rw_init(&sc->sc_ioctl.lock, DEVNAME(sc)); 1595 sc->sc_ioctl.req.msgid = -1; 1596 c->c_sc = sc; 1597 c->c_ccode = -1; 1598 1599 sc->sc_cmd_taskq = taskq_create("ipmicmd", 1, IPL_NONE, TASKQ_MPSAFE); 1600 } 1601 1602 int 1603 ipmi_activate(struct device *self, int act) 1604 { 1605 switch (act) { 1606 case DVACT_POWERDOWN: 1607 wdog_shutdown(self); 1608 break; 1609 } 1610 1611 return (0); 1612 } 1613 1614 struct ipmi_softc * 1615 ipmilookup(dev_t dev) 1616 { 1617 return (struct ipmi_softc *)device_lookup(&ipmi_cd, minor(dev)); 1618 } 1619 1620 int 1621 ipmiopen(dev_t dev, int flags, int mode, struct proc *p) 1622 { 1623 struct ipmi_softc *sc = ipmilookup(dev); 1624 1625 if (sc == NULL) 1626 return (ENXIO); 1627 return (0); 1628 } 1629 1630 int 1631 ipmiclose(dev_t dev, int flags, int mode, struct proc *p) 1632 { 1633 struct ipmi_softc *sc = ipmilookup(dev); 1634 1635 if (sc == NULL) 1636 return (ENXIO); 1637 return (0); 1638 } 1639 1640 int 1641 ipmiioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *proc) 1642 { 1643 struct ipmi_softc *sc = ipmilookup(dev); 1644 struct ipmi_req *req = (struct ipmi_req *)data; 1645 struct ipmi_recv *recv = (struct ipmi_recv *)data; 1646 struct ipmi_cmd *c = &sc->sc_ioctl.cmd; 1647 int iv; 1648 int len; 1649 u_char ccode; 1650 int rc = 0; 1651 1652 if (sc == NULL) 1653 return (ENXIO); 1654 1655 rw_enter_write(&sc->sc_ioctl.lock); 1656 1657 c->c_maxrxlen = sizeof(sc->sc_ioctl.buf); 1658 c->c_data = sc->sc_ioctl.buf; 1659 1660 switch (cmd) { 1661 case IPMICTL_SEND_COMMAND: 1662 if (req->msgid == -1) { 1663 rc = EINVAL; 1664 goto reset; 1665 } 1666 if (sc->sc_ioctl.req.msgid != -1) { 1667 rc = EBUSY; 1668 goto reset; 1669 } 1670 len = req->msg.data_len; 1671 if (len < 0) { 1672 rc = EINVAL; 1673 goto reset; 1674 } 1675 if (len > c->c_maxrxlen) { 1676 rc = E2BIG; 1677 goto reset; 1678 } 1679 sc->sc_ioctl.req = *req; 1680 c->c_ccode = -1; 1681 rc = copyin(req->msg.data, c->c_data, len); 1682 if (rc != 0) 1683 goto reset; 1684 KASSERT(c->c_ccode == -1); 1685 1686 /* Execute a command synchronously. */ 1687 c->c_netfn = req->msg.netfn; 1688 c->c_cmd = req->msg.cmd; 1689 c->c_txlen = req->msg.data_len; 1690 c->c_rxlen = 0; 1691 ipmi_cmd(c); 1692 break; 1693 case IPMICTL_RECEIVE_MSG_TRUNC: 1694 case IPMICTL_RECEIVE_MSG: 1695 if (sc->sc_ioctl.req.msgid == -1) { 1696 rc = EINVAL; 1697 goto reset; 1698 } 1699 if (c->c_ccode == -1) { 1700 rc = EAGAIN; 1701 goto reset; 1702 } 1703 ccode = c->c_ccode & 0xff; 1704 rc = copyout(&ccode, recv->msg.data, 1); 1705 if (rc != 0) 1706 goto reset; 1707 1708 /* Return a command result. */ 1709 recv->recv_type = IPMI_RESPONSE_RECV_TYPE; 1710 recv->msgid = sc->sc_ioctl.req.msgid; 1711 recv->msg.netfn = sc->sc_ioctl.req.msg.netfn; 1712 recv->msg.cmd = sc->sc_ioctl.req.msg.cmd; 1713 recv->msg.data_len = c->c_rxlen + 1; 1714 1715 rc = copyout(c->c_data, recv->msg.data + 1, c->c_rxlen); 1716 /* Always reset state after command completion. */ 1717 goto reset; 1718 case IPMICTL_SET_MY_ADDRESS_CMD: 1719 iv = *(int *)data; 1720 if (iv < 0 || iv > RSSA_MASK) { 1721 rc = EINVAL; 1722 goto reset; 1723 } 1724 c->c_rssa = iv; 1725 break; 1726 case IPMICTL_GET_MY_ADDRESS_CMD: 1727 *(int *)data = c->c_rssa; 1728 break; 1729 case IPMICTL_SET_MY_LUN_CMD: 1730 iv = *(int *)data; 1731 if (iv < 0 || iv > LUN_MASK) { 1732 rc = EINVAL; 1733 goto reset; 1734 } 1735 c->c_rslun = iv; 1736 break; 1737 case IPMICTL_GET_MY_LUN_CMD: 1738 *(int *)data = c->c_rslun; 1739 break; 1740 case IPMICTL_SET_GETS_EVENTS_CMD: 1741 break; 1742 case IPMICTL_REGISTER_FOR_CMD: 1743 case IPMICTL_UNREGISTER_FOR_CMD: 1744 default: 1745 break; 1746 } 1747 done: 1748 rw_exit_write(&sc->sc_ioctl.lock); 1749 return (rc); 1750 reset: 1751 sc->sc_ioctl.req.msgid = -1; 1752 c->c_ccode = -1; 1753 goto done; 1754 } 1755 1756 #define MIN_PERIOD 10 1757 1758 int 1759 ipmi_watchdog(void *arg, int period) 1760 { 1761 struct ipmi_softc *sc = arg; 1762 1763 if (sc->sc_wdog_period == period) { 1764 if (period != 0) { 1765 struct task *t; 1766 int res; 1767 1768 t = &sc->sc_wdog_tickle_task; 1769 (void)task_del(systq, t); 1770 res = task_add(systq, t); 1771 KASSERT(res == 1); 1772 } 1773 return (period); 1774 } 1775 1776 if (period < MIN_PERIOD && period > 0) 1777 period = MIN_PERIOD; 1778 sc->sc_wdog_period = period; 1779 ipmi_watchdog_set(sc); 1780 printf("%s: watchdog %sabled\n", DEVNAME(sc), 1781 (period == 0) ? "dis" : "en"); 1782 return (period); 1783 } 1784 1785 void 1786 ipmi_watchdog_tickle(void *arg) 1787 { 1788 struct ipmi_softc *sc = arg; 1789 struct ipmi_cmd c; 1790 1791 c.c_sc = sc; 1792 c.c_rssa = BMC_SA; 1793 c.c_rslun = BMC_LUN; 1794 c.c_netfn = APP_NETFN; 1795 c.c_cmd = APP_RESET_WATCHDOG; 1796 c.c_txlen = 0; 1797 c.c_maxrxlen = 0; 1798 c.c_rxlen = 0; 1799 c.c_data = NULL; 1800 ipmi_cmd(&c); 1801 } 1802 1803 void 1804 ipmi_watchdog_set(void *arg) 1805 { 1806 struct ipmi_softc *sc = arg; 1807 uint8_t wdog[IPMI_GET_WDOG_MAX]; 1808 struct ipmi_cmd c; 1809 1810 c.c_sc = sc; 1811 c.c_rssa = BMC_SA; 1812 c.c_rslun = BMC_LUN; 1813 c.c_netfn = APP_NETFN; 1814 c.c_cmd = APP_GET_WATCHDOG_TIMER; 1815 c.c_txlen = 0; 1816 c.c_maxrxlen = IPMI_GET_WDOG_MAX; 1817 c.c_rxlen = 0; 1818 c.c_data = wdog; 1819 ipmi_cmd(&c); 1820 1821 /* Period is 10ths/sec */ 1822 uint16_t timo = htole16(sc->sc_wdog_period * 10); 1823 1824 memcpy(&wdog[IPMI_SET_WDOG_TIMOL], &timo, 2); 1825 wdog[IPMI_SET_WDOG_TIMER] &= ~IPMI_WDOG_DONTSTOP; 1826 wdog[IPMI_SET_WDOG_TIMER] |= (sc->sc_wdog_period == 0) ? 1827 0 : IPMI_WDOG_DONTSTOP; 1828 wdog[IPMI_SET_WDOG_ACTION] &= ~IPMI_WDOG_MASK; 1829 wdog[IPMI_SET_WDOG_ACTION] |= (sc->sc_wdog_period == 0) ? 1830 IPMI_WDOG_DISABLED : IPMI_WDOG_REBOOT; 1831 1832 c.c_cmd = APP_SET_WATCHDOG_TIMER; 1833 c.c_txlen = IPMI_SET_WDOG_MAX; 1834 c.c_maxrxlen = 0; 1835 c.c_rxlen = 0; 1836 c.c_data = wdog; 1837 ipmi_cmd(&c); 1838 } 1839 1840 #if defined(__amd64__) || defined(__i386__) 1841 1842 #include <dev/isa/isareg.h> 1843 #include <dev/isa/isavar.h> 1844 1845 /* 1846 * Format of SMBIOS IPMI Flags 1847 * 1848 * bit0: interrupt trigger mode (1=level, 0=edge) 1849 * bit1: interrupt polarity (1=active high, 0=active low) 1850 * bit2: reserved 1851 * bit3: address LSB (1=odd,0=even) 1852 * bit4: interrupt (1=specified, 0=not specified) 1853 * bit5: reserved 1854 * bit6/7: register spacing (1,4,2,err) 1855 */ 1856 #define SMIPMI_FLAG_IRQLVL (1L << 0) 1857 #define SMIPMI_FLAG_IRQEN (1L << 3) 1858 #define SMIPMI_FLAG_ODDOFFSET (1L << 4) 1859 #define SMIPMI_FLAG_IFSPACING(x) (((x)>>6)&0x3) 1860 #define IPMI_IOSPACING_BYTE 0 1861 #define IPMI_IOSPACING_WORD 2 1862 #define IPMI_IOSPACING_DWORD 1 1863 1864 struct dmd_ipmi { 1865 u_int8_t dmd_sig[4]; /* Signature 'IPMI' */ 1866 u_int8_t dmd_i2c_address; /* Address of BMC */ 1867 u_int8_t dmd_nvram_address; /* Address of NVRAM */ 1868 u_int8_t dmd_if_type; /* IPMI Interface Type */ 1869 u_int8_t dmd_if_rev; /* IPMI Interface Revision */ 1870 } __packed; 1871 1872 void *scan_sig(long, long, int, int, const void *); 1873 1874 void ipmi_smbios_probe(struct smbios_ipmi *, struct ipmi_attach_args *); 1875 int ipmi_match(struct device *, void *, void *); 1876 void ipmi_attach(struct device *, struct device *, void *); 1877 1878 const struct cfattach ipmi_ca = { 1879 sizeof(struct ipmi_softc), ipmi_match, ipmi_attach, 1880 NULL, ipmi_activate 1881 }; 1882 1883 int 1884 ipmi_match(struct device *parent, void *match, void *aux) 1885 { 1886 struct ipmi_softc *sc; 1887 struct ipmi_attach_args *ia = aux; 1888 struct cfdata *cf = match; 1889 u_int8_t cmd[32]; 1890 int rv = 0; 1891 1892 if (strcmp(ia->iaa_name, cf->cf_driver->cd_name)) 1893 return (0); 1894 1895 /* XXX local softc is wrong wrong wrong */ 1896 sc = malloc(sizeof(*sc), M_TEMP, M_WAITOK | M_ZERO); 1897 strlcpy(sc->sc_dev.dv_xname, "ipmi0", sizeof(sc->sc_dev.dv_xname)); 1898 1899 /* Map registers */ 1900 if (ipmi_map_regs(sc, ia) == 0) { 1901 sc->sc_if->probe(sc); 1902 1903 /* Identify BMC device early to detect lying bios */ 1904 struct ipmi_cmd c; 1905 c.c_sc = sc; 1906 c.c_rssa = BMC_SA; 1907 c.c_rslun = BMC_LUN; 1908 c.c_netfn = APP_NETFN; 1909 c.c_cmd = APP_GET_DEVICE_ID; 1910 c.c_txlen = 0; 1911 c.c_maxrxlen = sizeof(cmd); 1912 c.c_rxlen = 0; 1913 c.c_data = cmd; 1914 ipmi_cmd(&c); 1915 1916 dbg_dump(1, "bmc data", c.c_rxlen, cmd); 1917 rv = 1; /* GETID worked, we got IPMI */ 1918 ipmi_unmap_regs(sc); 1919 } 1920 1921 free(sc, M_TEMP, sizeof(*sc)); 1922 1923 return (rv); 1924 } 1925 1926 void 1927 ipmi_attach(struct device *parent, struct device *self, void *aux) 1928 { 1929 ipmi_attach_common((struct ipmi_softc *)self, aux); 1930 } 1931 1932 /* Scan memory for signature */ 1933 void * 1934 scan_sig(long start, long end, int skip, int len, const void *data) 1935 { 1936 void *va; 1937 1938 while (start < end) { 1939 va = ISA_HOLE_VADDR(start); 1940 if (memcmp(va, data, len) == 0) 1941 return (va); 1942 1943 start += skip; 1944 } 1945 1946 return (NULL); 1947 } 1948 1949 void 1950 ipmi_smbios_probe(struct smbios_ipmi *pipmi, struct ipmi_attach_args *ia) 1951 { 1952 1953 dbg_printf(1, "ipmi_smbios_probe: %02x %02x %02x %02x %08llx %02x " 1954 "%02x\n", 1955 pipmi->smipmi_if_type, 1956 pipmi->smipmi_if_rev, 1957 pipmi->smipmi_i2c_address, 1958 pipmi->smipmi_nvram_address, 1959 pipmi->smipmi_base_address, 1960 pipmi->smipmi_base_flags, 1961 pipmi->smipmi_irq); 1962 1963 ia->iaa_if_type = pipmi->smipmi_if_type; 1964 ia->iaa_if_rev = pipmi->smipmi_if_rev; 1965 ia->iaa_if_irq = (pipmi->smipmi_base_flags & SMIPMI_FLAG_IRQEN) ? 1966 pipmi->smipmi_irq : -1; 1967 ia->iaa_if_irqlvl = (pipmi->smipmi_base_flags & SMIPMI_FLAG_IRQLVL) ? 1968 IST_LEVEL : IST_EDGE; 1969 ia->iaa_if_iosize = 1; 1970 1971 switch (SMIPMI_FLAG_IFSPACING(pipmi->smipmi_base_flags)) { 1972 case IPMI_IOSPACING_BYTE: 1973 ia->iaa_if_iospacing = 1; 1974 break; 1975 1976 case IPMI_IOSPACING_DWORD: 1977 ia->iaa_if_iospacing = 4; 1978 break; 1979 1980 case IPMI_IOSPACING_WORD: 1981 ia->iaa_if_iospacing = 2; 1982 break; 1983 1984 default: 1985 ia->iaa_if_iospacing = 1; 1986 printf("ipmi: unknown register spacing\n"); 1987 } 1988 1989 /* Calculate base address (PCI BAR format) */ 1990 if (pipmi->smipmi_base_address & 0x1) { 1991 ia->iaa_if_iotype = 'i'; 1992 ia->iaa_if_iobase = pipmi->smipmi_base_address & ~0x1; 1993 } else { 1994 ia->iaa_if_iotype = 'm'; 1995 ia->iaa_if_iobase = pipmi->smipmi_base_address & ~0xF; 1996 } 1997 if (pipmi->smipmi_base_flags & SMIPMI_FLAG_ODDOFFSET) 1998 ia->iaa_if_iobase++; 1999 2000 if (pipmi->smipmi_base_flags == 0x7f) { 2001 /* IBM 325 eServer workaround */ 2002 ia->iaa_if_iospacing = 1; 2003 ia->iaa_if_iobase = pipmi->smipmi_base_address; 2004 ia->iaa_if_iotype = 'i'; 2005 return; 2006 } 2007 } 2008 2009 int 2010 ipmi_probe(void *aux) 2011 { 2012 struct ipmi_attach_args *ia = aux; 2013 struct dmd_ipmi *pipmi; 2014 struct smbtable tbl; 2015 2016 tbl.cookie = 0; 2017 if (smbios_find_table(SMBIOS_TYPE_IPMIDEV, &tbl)) 2018 ipmi_smbios_probe(tbl.tblhdr, ia); 2019 else { 2020 pipmi = (struct dmd_ipmi *)scan_sig(0xC0000L, 0xFFFFFL, 16, 4, 2021 "IPMI"); 2022 /* XXX hack to find Dell PowerEdge 8450 */ 2023 if (pipmi == NULL) { 2024 /* no IPMI found */ 2025 return (0); 2026 } 2027 2028 /* we have an IPMI signature, fill in attach arg structure */ 2029 ia->iaa_if_type = pipmi->dmd_if_type; 2030 ia->iaa_if_rev = pipmi->dmd_if_rev; 2031 } 2032 2033 return (1); 2034 } 2035 2036 #endif
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