1 /* $NetBSD: ipmi.c,v 1.10 2023/03/22 13:00:54 mlelstv Exp $ */
2
3 /*
4 * Copyright (c) 2019 Michael van Elst
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 */
27 /*
28 * Copyright (c) 2006 Manuel Bouyer.
29 *
30 * Redistribution and use in source and binary forms, with or without
31 * modification, are permitted provided that the following conditions
32 * are met:
33 * 1. Redistributions of source code must retain the above copyright
34 * notice, this list of conditions and the following disclaimer.
35 * 2. Redistributions in binary form must reproduce the above copyright
36 * notice, this list of conditions and the following disclaimer in the
37 * documentation and/or other materials provided with the distribution.
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
40 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
41 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
42 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
43 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
44 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
45 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
46 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
47 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
48 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
49 *
50 */
51
52 /*
53 * Copyright (c) 2005 Jordan Hargrave
54 * All rights reserved.
55 *
56 * Redistribution and use in source and binary forms, with or without
57 * modification, are permitted provided that the following conditions
58 * are met:
59 * 1. Redistributions of source code must retain the above copyright
60 * notice, this list of conditions and the following disclaimer.
61 * 2. Redistributions in binary form must reproduce the above copyright
62 * notice, this list of conditions and the following disclaimer in the
63 * documentation and/or other materials provided with the distribution.
64 *
65 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
66 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
67 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
68 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR
69 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
70 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
71 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
72 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
73 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
74 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
75 * SUCH DAMAGE.
76 */
77
78 #include <sys/cdefs.h>
79 __KERNEL_RCSID(0, "$NetBSD: ipmi.c,v 1.10 2023/03/22 13:00:54 mlelstv Exp $");
80
81 #include <sys/types.h>
82 #include <sys/param.h>
83 #include <sys/systm.h>
84 #include <sys/kernel.h>
85 #include <sys/device.h>
86 #include <sys/extent.h>
87 #include <sys/callout.h>
88 #include <sys/envsys.h>
89 #include <sys/malloc.h>
90 #include <sys/kthread.h>
91 #include <sys/bus.h>
92 #include <sys/intr.h>
93 #include <sys/ioctl.h>
94 #include <sys/poll.h>
95 #include <sys/conf.h>
96
97 #include <dev/isa/isareg.h>
98 #include <dev/isa/isavar.h>
99
100 #include <sys/ipmi.h>
101 #include <dev/ipmivar.h>
102
103 #include <uvm/uvm_extern.h>
104
105 #include "ioconf.h"
106
107 static dev_type_open(ipmi_open);
108 static dev_type_close(ipmi_close);
109 static dev_type_ioctl(ipmi_ioctl);
110 static dev_type_poll(ipmi_poll);
111
112 const struct cdevsw ipmi_cdevsw = {
113 .d_open = ipmi_open,
114 .d_close = ipmi_close,
115 .d_read = noread,
116 .d_write = nowrite,
117 .d_ioctl = ipmi_ioctl,
118 .d_stop = nostop,
119 .d_tty = notty,
120 .d_poll = ipmi_poll,
121 .d_mmap = nommap,
122 .d_kqfilter = nokqfilter,
123 .d_discard = nodiscard,
124 .d_flag = D_OTHER
125 };
126
127 #define IPMIUNIT(n) (minor(n))
128
129 struct ipmi_sensor {
130 uint8_t *i_sdr;
131 int i_num;
132 int i_stype;
133 int i_etype;
134 char i_envdesc[64];
135 int i_envtype; /* envsys compatible type */
136 int i_envnum; /* envsys index */
137 sysmon_envsys_lim_t i_limits, i_deflims;
138 uint32_t i_props, i_defprops;
139 SLIST_ENTRY(ipmi_sensor) i_list;
140 int32_t i_prevval; /* feed rnd source on change */
141 };
142
143 #if 0
144 static int ipmi_nintr;
145 #endif
146 static int ipmi_dbg = 0;
147 static int ipmi_enabled = 0;
148
149 #define SENSOR_REFRESH_RATE (hz / 2)
150
151 #define IPMI_BTMSG_LEN 0
152 #define IPMI_BTMSG_NFLN 1
153 #define IPMI_BTMSG_SEQ 2
154 #define IPMI_BTMSG_CMD 3
155 #define IPMI_BTMSG_CCODE 4
156 #define IPMI_BTMSG_DATASND 4
157 #define IPMI_BTMSG_DATARCV 5
158
159 #define IPMI_MSG_NFLN 0
160 #define IPMI_MSG_CMD 1
161 #define IPMI_MSG_CCODE 2
162 #define IPMI_MSG_DATASND 2
163 #define IPMI_MSG_DATARCV 3
164
165 #define IPMI_SENSOR_TYPE_TEMP 0x0101
166 #define IPMI_SENSOR_TYPE_VOLT 0x0102
167 #define IPMI_SENSOR_TYPE_FAN 0x0104
168 #define IPMI_SENSOR_TYPE_INTRUSION 0x6F05
169 #define IPMI_SENSOR_TYPE_PWRSUPPLY 0x6F08
170
171 #define IPMI_NAME_UNICODE 0x00
172 #define IPMI_NAME_BCDPLUS 0x01
173 #define IPMI_NAME_ASCII6BIT 0x02
174 #define IPMI_NAME_ASCII8BIT 0x03
175
176 #define IPMI_ENTITY_PWRSUPPLY 0x0A
177
178 #define IPMI_SENSOR_SCANNING_ENABLED (1L << 6)
179 #define IPMI_SENSOR_UNAVAILABLE (1L << 5)
180 #define IPMI_INVALID_SENSOR_P(x) \
181 (((x) & (IPMI_SENSOR_SCANNING_ENABLED|IPMI_SENSOR_UNAVAILABLE)) \
182 != IPMI_SENSOR_SCANNING_ENABLED)
183
184 #define IPMI_SDR_TYPEFULL 1
185 #define IPMI_SDR_TYPECOMPACT 2
186
187 #define byteof(x) ((x) >> 3)
188 #define bitof(x) (1L << ((x) & 0x7))
189 #define TB(b,m) (data[2+byteof(b)] & bitof(b))
190
191 #define dbg_printf(lvl, fmt...) \
192 if (ipmi_dbg >= lvl) \
193 printf(fmt);
194 #define dbg_dump(lvl, msg, len, buf) \
195 if (len && ipmi_dbg >= lvl) \
196 dumpb(msg, len, (const uint8_t *)(buf));
197
198 static long signextend(unsigned long, int);
199
200 SLIST_HEAD(ipmi_sensors_head, ipmi_sensor);
201 static struct ipmi_sensors_head ipmi_sensor_list =
202 SLIST_HEAD_INITIALIZER(&ipmi_sensor_list);
203
204 static void dumpb(const char *, int, const uint8_t *);
205
206 static int read_sensor(struct ipmi_softc *, struct ipmi_sensor *);
207 static int add_sdr_sensor(struct ipmi_softc *, uint8_t *);
208 static int get_sdr_partial(struct ipmi_softc *, uint16_t, uint16_t,
209 uint8_t, uint8_t, void *, uint16_t *);
210 static int get_sdr(struct ipmi_softc *, uint16_t, uint16_t *);
211
212 static char *ipmi_buf_acquire(struct ipmi_softc *, size_t);
213 static void ipmi_buf_release(struct ipmi_softc *, char *);
214 static int ipmi_sendcmd(struct ipmi_softc *, int, int, int, int, int, const void*);
215 static int ipmi_recvcmd(struct ipmi_softc *, int, int *, void *);
216 static void ipmi_delay(struct ipmi_softc *, int);
217
218 static int ipmi_get_device_id(struct ipmi_softc *, struct ipmi_device_id *);
219 static int ipmi_watchdog_setmode(struct sysmon_wdog *);
220 static int ipmi_watchdog_tickle(struct sysmon_wdog *);
221 static void ipmi_dotickle(struct ipmi_softc *);
222
223 #if 0
224 static int ipmi_intr(void *);
225 #endif
226
227 static int ipmi_match(device_t, cfdata_t, void *);
228 static void ipmi_attach(device_t, device_t, void *);
229 static int ipmi_detach(device_t, int);
230
231 static long ipmi_convert(uint8_t, struct sdrtype1 *, long);
232 static void ipmi_sensor_name(char *, int, uint8_t, uint8_t *);
233
234 /* BMC Helper Functions */
235 static uint8_t bmc_read(struct ipmi_softc *, int);
236 static void bmc_write(struct ipmi_softc *, int, uint8_t);
237 static int bmc_io_wait(struct ipmi_softc *, int, uint8_t, uint8_t, const char *);
238 static int bmc_io_wait_spin(struct ipmi_softc *, int, uint8_t, uint8_t);
239 static int bmc_io_wait_sleep(struct ipmi_softc *, int, uint8_t, uint8_t);
240
241 static void *cmn_buildmsg(struct ipmi_softc *, int, int, int, const void *, int *);
242
243 static int getbits(uint8_t *, int, int);
244 static int ipmi_sensor_type(int, int, int);
245
246 static void ipmi_refresh_sensors(struct ipmi_softc *);
247 static int ipmi_map_regs(struct ipmi_softc *, struct ipmi_attach_args *);
248 static void ipmi_unmap_regs(struct ipmi_softc *);
249
250 static int32_t ipmi_convert_sensor(uint8_t *, struct ipmi_sensor *);
251 static void ipmi_set_limits(struct sysmon_envsys *, envsys_data_t *,
252 sysmon_envsys_lim_t *, uint32_t *);
253 static void ipmi_get_limits(struct sysmon_envsys *, envsys_data_t *,
254 sysmon_envsys_lim_t *, uint32_t *);
255 static void ipmi_get_sensor_limits(struct ipmi_softc *, struct ipmi_sensor *,
256 sysmon_envsys_lim_t *, uint32_t *);
257 static int ipmi_sensor_status(struct ipmi_softc *, struct ipmi_sensor *,
258 envsys_data_t *, uint8_t *);
259
260 static int add_child_sensors(struct ipmi_softc *, uint8_t *, int, int, int,
261 int, int, int, const char *);
262
263 static bool ipmi_suspend(device_t, const pmf_qual_t *);
264
265 static int kcs_probe(struct ipmi_softc *);
266 static int kcs_reset(struct ipmi_softc *);
267 static int kcs_sendmsg(struct ipmi_softc *, int, const uint8_t *);
268 static int kcs_recvmsg(struct ipmi_softc *, int, int *len, uint8_t *);
269
270 static void *bt_buildmsg(struct ipmi_softc *, int, int, int, const void *, int *);
271 static int bt_probe(struct ipmi_softc *);
272 static int bt_reset(struct ipmi_softc *);
273 static int bt_sendmsg(struct ipmi_softc *, int, const uint8_t *);
274 static int bt_recvmsg(struct ipmi_softc *, int, int *, uint8_t *);
275
276 static int smic_probe(struct ipmi_softc *);
277 static int smic_reset(struct ipmi_softc *);
278 static int smic_sendmsg(struct ipmi_softc *, int, const uint8_t *);
279 static int smic_recvmsg(struct ipmi_softc *, int, int *, uint8_t *);
280
281 static struct ipmi_if kcs_if = {
282 "KCS",
283 IPMI_IF_KCS_NREGS,
284 cmn_buildmsg,
285 kcs_sendmsg,
286 kcs_recvmsg,
287 kcs_reset,
288 kcs_probe,
289 };
290
291 static struct ipmi_if smic_if = {
292 "SMIC",
293 IPMI_IF_SMIC_NREGS,
294 cmn_buildmsg,
295 smic_sendmsg,
296 smic_recvmsg,
297 smic_reset,
298 smic_probe,
299 };
300
301 static struct ipmi_if bt_if = {
302 "BT",
303 IPMI_IF_BT_NREGS,
304 bt_buildmsg,
305 bt_sendmsg,
306 bt_recvmsg,
307 bt_reset,
308 bt_probe,
309 };
310
311 static struct ipmi_if *ipmi_get_if(int);
312
313 static struct ipmi_if *
ipmi_get_if(int iftype)314 ipmi_get_if(int iftype)
315 {
316 switch (iftype) {
317 case IPMI_IF_KCS:
318 return &kcs_if;
319 case IPMI_IF_SMIC:
320 return &smic_if;
321 case IPMI_IF_BT:
322 return &bt_if;
323 default:
324 return NULL;
325 }
326 }
327
328 /*
329 * BMC Helper Functions
330 */
331 static uint8_t
bmc_read(struct ipmi_softc * sc,int offset)332 bmc_read(struct ipmi_softc *sc, int offset)
333 {
334 return bus_space_read_1(sc->sc_iot, sc->sc_ioh,
335 offset * sc->sc_if_iospacing);
336 }
337
338 static void
bmc_write(struct ipmi_softc * sc,int offset,uint8_t val)339 bmc_write(struct ipmi_softc *sc, int offset, uint8_t val)
340 {
341 bus_space_write_1(sc->sc_iot, sc->sc_ioh,
342 offset * sc->sc_if_iospacing, val);
343 }
344
345 static int
bmc_io_wait_sleep(struct ipmi_softc * sc,int offset,uint8_t mask,uint8_t value)346 bmc_io_wait_sleep(struct ipmi_softc *sc, int offset, uint8_t mask,
347 uint8_t value)
348 {
349 int retries;
350 uint8_t v;
351
352 KASSERT(mutex_owned(&sc->sc_cmd_mtx));
353
354 for (retries = 0; retries < sc->sc_max_retries; retries++) {
355 v = bmc_read(sc, offset);
356 if ((v & mask) == value)
357 return v;
358 mutex_enter(&sc->sc_sleep_mtx);
359 cv_timedwait(&sc->sc_cmd_sleep, &sc->sc_sleep_mtx, 1);
360 mutex_exit(&sc->sc_sleep_mtx);
361 }
362 return -1;
363 }
364
365 static int
bmc_io_wait(struct ipmi_softc * sc,int offset,uint8_t mask,uint8_t value,const char * lbl)366 bmc_io_wait(struct ipmi_softc *sc, int offset, uint8_t mask, uint8_t value,
367 const char *lbl)
368 {
369 int v;
370
371 v = bmc_io_wait_spin(sc, offset, mask, value);
372 if (cold || v != -1)
373 return v;
374
375 return bmc_io_wait_sleep(sc, offset, mask, value);
376 }
377
378 static int
bmc_io_wait_spin(struct ipmi_softc * sc,int offset,uint8_t mask,uint8_t value)379 bmc_io_wait_spin(struct ipmi_softc *sc, int offset, uint8_t mask,
380 uint8_t value)
381 {
382 uint8_t v;
383 int count = cold ? 15000 : 500;
384 /* ~us */
385
386 while (count--) {
387 v = bmc_read(sc, offset);
388 if ((v & mask) == value)
389 return v;
390
391 delay(1);
392 }
393
394 return -1;
395
396 }
397
398 #define NETFN_LUN(nf,ln) (((nf) << 2) | ((ln) & 0x3))
399 #define GET_NETFN(m) (((m) >> 2)
400 #define GET_LUN(m) ((m) & 0x03)
401
402 /*
403 * BT interface
404 */
405 #define _BT_CTRL_REG 0
406 #define BT_CLR_WR_PTR (1L << 0)
407 #define BT_CLR_RD_PTR (1L << 1)
408 #define BT_HOST2BMC_ATN (1L << 2)
409 #define BT_BMC2HOST_ATN (1L << 3)
410 #define BT_EVT_ATN (1L << 4)
411 #define BT_HOST_BUSY (1L << 6)
412 #define BT_BMC_BUSY (1L << 7)
413
414 #define BT_READY (BT_HOST_BUSY|BT_HOST2BMC_ATN|BT_BMC2HOST_ATN)
415
416 #define _BT_DATAIN_REG 1
417 #define _BT_DATAOUT_REG 1
418
419 #define _BT_INTMASK_REG 2
420 #define BT_IM_HIRQ_PEND (1L << 1)
421 #define BT_IM_SCI_EN (1L << 2)
422 #define BT_IM_SMI_EN (1L << 3)
423 #define BT_IM_NMI2SMI (1L << 4)
424
425 static int bt_read(struct ipmi_softc *, int);
426 static int bt_write(struct ipmi_softc *, int, uint8_t);
427
428 static int
bt_read(struct ipmi_softc * sc,int reg)429 bt_read(struct ipmi_softc *sc, int reg)
430 {
431 return bmc_read(sc, reg);
432 }
433
434 static int
bt_write(struct ipmi_softc * sc,int reg,uint8_t data)435 bt_write(struct ipmi_softc *sc, int reg, uint8_t data)
436 {
437 if (bmc_io_wait(sc, _BT_CTRL_REG, BT_BMC_BUSY, 0, __func__) < 0)
438 return -1;
439
440 bmc_write(sc, reg, data);
441 return 0;
442 }
443
444 static int
bt_sendmsg(struct ipmi_softc * sc,int len,const uint8_t * data)445 bt_sendmsg(struct ipmi_softc *sc, int len, const uint8_t *data)
446 {
447 int i;
448
449 bt_write(sc, _BT_CTRL_REG, BT_CLR_WR_PTR);
450 for (i = 0; i < len; i++)
451 bt_write(sc, _BT_DATAOUT_REG, data[i]);
452
453 bt_write(sc, _BT_CTRL_REG, BT_HOST2BMC_ATN);
454 if (bmc_io_wait(sc, _BT_CTRL_REG, BT_HOST2BMC_ATN | BT_BMC_BUSY, 0,
455 __func__) < 0)
456 return -1;
457
458 return 0;
459 }
460
461 static int
bt_recvmsg(struct ipmi_softc * sc,int maxlen,int * rxlen,uint8_t * data)462 bt_recvmsg(struct ipmi_softc *sc, int maxlen, int *rxlen, uint8_t *data)
463 {
464 uint8_t len, v, i;
465
466 if (bmc_io_wait(sc, _BT_CTRL_REG, BT_BMC2HOST_ATN, BT_BMC2HOST_ATN,
467 __func__) < 0)
468 return -1;
469
470 bt_write(sc, _BT_CTRL_REG, BT_HOST_BUSY);
471 bt_write(sc, _BT_CTRL_REG, BT_BMC2HOST_ATN);
472 bt_write(sc, _BT_CTRL_REG, BT_CLR_RD_PTR);
473 len = bt_read(sc, _BT_DATAIN_REG);
474 for (i = IPMI_BTMSG_NFLN; i <= len; i++) {
475 v = bt_read(sc, _BT_DATAIN_REG);
476 if (i != IPMI_BTMSG_SEQ)
477 *(data++) = v;
478 }
479 bt_write(sc, _BT_CTRL_REG, BT_HOST_BUSY);
480 *rxlen = len - 1;
481
482 return 0;
483 }
484
485 static int
bt_reset(struct ipmi_softc * sc)486 bt_reset(struct ipmi_softc *sc)
487 {
488 return -1;
489 }
490
491 static int
bt_probe(struct ipmi_softc * sc)492 bt_probe(struct ipmi_softc *sc)
493 {
494 uint8_t rv;
495
496 rv = bmc_read(sc, _BT_CTRL_REG);
497 rv &= BT_HOST_BUSY;
498 rv |= BT_CLR_WR_PTR|BT_CLR_RD_PTR|BT_BMC2HOST_ATN|BT_HOST2BMC_ATN;
499 bmc_write(sc, _BT_CTRL_REG, rv);
500
501 rv = bmc_read(sc, _BT_INTMASK_REG);
502 rv &= BT_IM_SCI_EN|BT_IM_SMI_EN|BT_IM_NMI2SMI;
503 rv |= BT_IM_HIRQ_PEND;
504 bmc_write(sc, _BT_INTMASK_REG, rv);
505
506 #if 0
507 printf("%s: %2x\n", __func__, v);
508 printf(" WR : %2x\n", v & BT_CLR_WR_PTR);
509 printf(" RD : %2x\n", v & BT_CLR_RD_PTR);
510 printf(" H2B : %2x\n", v & BT_HOST2BMC_ATN);
511 printf(" B2H : %2x\n", v & BT_BMC2HOST_ATN);
512 printf(" EVT : %2x\n", v & BT_EVT_ATN);
513 printf(" HBSY : %2x\n", v & BT_HOST_BUSY);
514 printf(" BBSY : %2x\n", v & BT_BMC_BUSY);
515 #endif
516 return 0;
517 }
518
519 /*
520 * SMIC interface
521 */
522 #define _SMIC_DATAIN_REG 0
523 #define _SMIC_DATAOUT_REG 0
524
525 #define _SMIC_CTRL_REG 1
526 #define SMS_CC_GET_STATUS 0x40
527 #define SMS_CC_START_TRANSFER 0x41
528 #define SMS_CC_NEXT_TRANSFER 0x42
529 #define SMS_CC_END_TRANSFER 0x43
530 #define SMS_CC_START_RECEIVE 0x44
531 #define SMS_CC_NEXT_RECEIVE 0x45
532 #define SMS_CC_END_RECEIVE 0x46
533 #define SMS_CC_TRANSFER_ABORT 0x47
534
535 #define SMS_SC_READY 0xc0
536 #define SMS_SC_WRITE_START 0xc1
537 #define SMS_SC_WRITE_NEXT 0xc2
538 #define SMS_SC_WRITE_END 0xc3
539 #define SMS_SC_READ_START 0xc4
540 #define SMS_SC_READ_NEXT 0xc5
541 #define SMS_SC_READ_END 0xc6
542
543 #define _SMIC_FLAG_REG 2
544 #define SMIC_BUSY (1L << 0)
545 #define SMIC_SMS_ATN (1L << 2)
546 #define SMIC_EVT_ATN (1L << 3)
547 #define SMIC_SMI (1L << 4)
548 #define SMIC_TX_DATA_RDY (1L << 6)
549 #define SMIC_RX_DATA_RDY (1L << 7)
550
551 static int smic_wait(struct ipmi_softc *, uint8_t, uint8_t, const char *);
552 static int smic_write_cmd_data(struct ipmi_softc *, uint8_t, const uint8_t *);
553 static int smic_read_data(struct ipmi_softc *, uint8_t *);
554
555 static int
smic_wait(struct ipmi_softc * sc,uint8_t mask,uint8_t val,const char * lbl)556 smic_wait(struct ipmi_softc *sc, uint8_t mask, uint8_t val, const char *lbl)
557 {
558 int v;
559
560 /* Wait for expected flag bits */
561 v = bmc_io_wait(sc, _SMIC_FLAG_REG, mask, val, __func__);
562 if (v < 0)
563 return -1;
564
565 /* Return current status */
566 v = bmc_read(sc, _SMIC_CTRL_REG);
567 dbg_printf(99, "%s(%s) = %#.2x\n", __func__, lbl, v);
568 return v;
569 }
570
571 static int
smic_write_cmd_data(struct ipmi_softc * sc,uint8_t cmd,const uint8_t * data)572 smic_write_cmd_data(struct ipmi_softc *sc, uint8_t cmd, const uint8_t *data)
573 {
574 int sts, v;
575
576 dbg_printf(50, "%s: %#.2x %#.2x\n", __func__, cmd, data ? *data : -1);
577 sts = smic_wait(sc, SMIC_TX_DATA_RDY | SMIC_BUSY, SMIC_TX_DATA_RDY,
578 "smic_write_cmd_data ready");
579 if (sts < 0)
580 return sts;
581
582 bmc_write(sc, _SMIC_CTRL_REG, cmd);
583 if (data)
584 bmc_write(sc, _SMIC_DATAOUT_REG, *data);
585
586 /* Toggle BUSY bit, then wait for busy bit to clear */
587 v = bmc_read(sc, _SMIC_FLAG_REG);
588 bmc_write(sc, _SMIC_FLAG_REG, v | SMIC_BUSY);
589
590 return smic_wait(sc, SMIC_BUSY, 0, __func__);
591 }
592
593 static int
smic_read_data(struct ipmi_softc * sc,uint8_t * data)594 smic_read_data(struct ipmi_softc *sc, uint8_t *data)
595 {
596 int sts;
597
598 sts = smic_wait(sc, SMIC_RX_DATA_RDY | SMIC_BUSY, SMIC_RX_DATA_RDY,
599 __func__);
600 if (sts >= 0) {
601 *data = bmc_read(sc, _SMIC_DATAIN_REG);
602 dbg_printf(50, "%s: %#.2x\n", __func__, *data);
603 }
604 return sts;
605 }
606
607 #define ErrStat(a, ...) if (a) printf(__VA_ARGS__);
608
609 static int
smic_sendmsg(struct ipmi_softc * sc,int len,const uint8_t * data)610 smic_sendmsg(struct ipmi_softc *sc, int len, const uint8_t *data)
611 {
612 int sts, idx;
613
614 sts = smic_write_cmd_data(sc, SMS_CC_START_TRANSFER, &data[0]);
615 ErrStat(sts != SMS_SC_WRITE_START, "%s: wstart", __func__);
616 for (idx = 1; idx < len - 1; idx++) {
617 sts = smic_write_cmd_data(sc, SMS_CC_NEXT_TRANSFER,
618 &data[idx]);
619 ErrStat(sts != SMS_SC_WRITE_NEXT, "%s: write", __func__);
620 }
621 sts = smic_write_cmd_data(sc, SMS_CC_END_TRANSFER, &data[idx]);
622 if (sts != SMS_SC_WRITE_END) {
623 dbg_printf(50, "%s: %d/%d = %#.2x\n", __func__, idx, len, sts);
624 return -1;
625 }
626
627 return 0;
628 }
629
630 static int
smic_recvmsg(struct ipmi_softc * sc,int maxlen,int * len,uint8_t * data)631 smic_recvmsg(struct ipmi_softc *sc, int maxlen, int *len, uint8_t *data)
632 {
633 int sts, idx;
634
635 *len = 0;
636 sts = smic_wait(sc, SMIC_RX_DATA_RDY, SMIC_RX_DATA_RDY, __func__);
637 if (sts < 0)
638 return -1;
639
640 sts = smic_write_cmd_data(sc, SMS_CC_START_RECEIVE, NULL);
641 ErrStat(sts != SMS_SC_READ_START, "%s: rstart", __func__);
642 for (idx = 0;; ) {
643 sts = smic_read_data(sc, &data[idx++]);
644 if (sts != SMS_SC_READ_START && sts != SMS_SC_READ_NEXT)
645 break;
646 smic_write_cmd_data(sc, SMS_CC_NEXT_RECEIVE, NULL);
647 }
648 ErrStat(sts != SMS_SC_READ_END, "%s: rend", __func__);
649
650 *len = idx;
651
652 sts = smic_write_cmd_data(sc, SMS_CC_END_RECEIVE, NULL);
653 if (sts != SMS_SC_READY) {
654 dbg_printf(50, "%s: %d/%d = %#.2x\n",
655 __func__, idx, maxlen, sts);
656 return -1;
657 }
658
659 return 0;
660 }
661
662 static int
smic_reset(struct ipmi_softc * sc)663 smic_reset(struct ipmi_softc *sc)
664 {
665 return -1;
666 }
667
668 static int
smic_probe(struct ipmi_softc * sc)669 smic_probe(struct ipmi_softc *sc)
670 {
671 /* Flag register should not be 0xFF on a good system */
672 if (bmc_read(sc, _SMIC_FLAG_REG) == 0xFF)
673 return -1;
674
675 return 0;
676 }
677
678 /*
679 * KCS interface
680 */
681 #define _KCS_DATAIN_REGISTER 0
682 #define _KCS_DATAOUT_REGISTER 0
683 #define KCS_READ_NEXT 0x68
684
685 #define _KCS_COMMAND_REGISTER 1
686 #define KCS_GET_STATUS 0x60
687 #define KCS_WRITE_START 0x61
688 #define KCS_WRITE_END 0x62
689
690 #define _KCS_STATUS_REGISTER 1
691 #define KCS_OBF (1L << 0)
692 #define KCS_IBF (1L << 1)
693 #define KCS_SMS_ATN (1L << 2)
694 #define KCS_CD (1L << 3)
695 #define KCS_OEM1 (1L << 4)
696 #define KCS_OEM2 (1L << 5)
697 #define KCS_STATE_MASK 0xc0
698 #define KCS_IDLE_STATE 0x00
699 #define KCS_READ_STATE 0x40
700 #define KCS_WRITE_STATE 0x80
701 #define KCS_ERROR_STATE 0xC0
702
703 static int kcs_wait(struct ipmi_softc *, uint8_t, uint8_t, const char *);
704 static int kcs_write_cmd(struct ipmi_softc *, uint8_t);
705 static int kcs_write_data(struct ipmi_softc *, uint8_t);
706 static int kcs_read_data(struct ipmi_softc *, uint8_t *);
707
708 static int
kcs_wait(struct ipmi_softc * sc,uint8_t mask,uint8_t value,const char * lbl)709 kcs_wait(struct ipmi_softc *sc, uint8_t mask, uint8_t value, const char *lbl)
710 {
711 int v;
712
713 v = bmc_io_wait(sc, _KCS_STATUS_REGISTER, mask, value, lbl);
714 if (v < 0)
715 return v;
716
717 /* Check if output buffer full, read dummy byte */
718 if ((v & (KCS_OBF | KCS_STATE_MASK)) == (KCS_OBF | KCS_WRITE_STATE))
719 bmc_read(sc, _KCS_DATAIN_REGISTER);
720
721 /* Check for error state */
722 if ((v & KCS_STATE_MASK) == KCS_ERROR_STATE) {
723 bmc_write(sc, _KCS_COMMAND_REGISTER, KCS_GET_STATUS);
724 while (bmc_read(sc, _KCS_STATUS_REGISTER) & KCS_IBF)
725 ;
726 aprint_error_dev(sc->sc_dev, "error code: %#x\n",
727 bmc_read(sc, _KCS_DATAIN_REGISTER));
728 }
729
730 return v & KCS_STATE_MASK;
731 }
732
733 static int
kcs_write_cmd(struct ipmi_softc * sc,uint8_t cmd)734 kcs_write_cmd(struct ipmi_softc *sc, uint8_t cmd)
735 {
736 /* ASSERT: IBF and OBF are clear */
737 dbg_printf(50, "%s: %#.2x\n", __func__, cmd);
738 bmc_write(sc, _KCS_COMMAND_REGISTER, cmd);
739
740 return kcs_wait(sc, KCS_IBF, 0, "write_cmd");
741 }
742
743 static int
kcs_write_data(struct ipmi_softc * sc,uint8_t data)744 kcs_write_data(struct ipmi_softc *sc, uint8_t data)
745 {
746 /* ASSERT: IBF and OBF are clear */
747 dbg_printf(50, "%s: %#.2x\n", __func__, data);
748 bmc_write(sc, _KCS_DATAOUT_REGISTER, data);
749
750 return kcs_wait(sc, KCS_IBF, 0, "write_data");
751 }
752
753 static int
kcs_read_data(struct ipmi_softc * sc,uint8_t * data)754 kcs_read_data(struct ipmi_softc *sc, uint8_t * data)
755 {
756 int sts;
757
758 sts = kcs_wait(sc, KCS_IBF | KCS_OBF, KCS_OBF, __func__);
759 if (sts != KCS_READ_STATE)
760 return sts;
761
762 /* ASSERT: OBF is set read data, request next byte */
763 *data = bmc_read(sc, _KCS_DATAIN_REGISTER);
764 bmc_write(sc, _KCS_DATAOUT_REGISTER, KCS_READ_NEXT);
765
766 dbg_printf(50, "%s: %#.2x\n", __func__, *data);
767
768 return sts;
769 }
770
771 /* Exported KCS functions */
772 static int
kcs_sendmsg(struct ipmi_softc * sc,int len,const uint8_t * data)773 kcs_sendmsg(struct ipmi_softc *sc, int len, const uint8_t * data)
774 {
775 int idx, sts;
776
777 /* ASSERT: IBF is clear */
778 dbg_dump(50, __func__, len, data);
779 sts = kcs_write_cmd(sc, KCS_WRITE_START);
780 for (idx = 0; idx < len; idx++) {
781 if (idx == len - 1)
782 sts = kcs_write_cmd(sc, KCS_WRITE_END);
783
784 if (sts != KCS_WRITE_STATE)
785 break;
786
787 sts = kcs_write_data(sc, data[idx]);
788 }
789 if (sts != KCS_READ_STATE) {
790 dbg_printf(1, "%s: %d/%d <%#.2x>\n", __func__, idx, len, sts);
791 dbg_dump(1, __func__, len, data);
792 return -1;
793 }
794
795 return 0;
796 }
797
798 static int
kcs_recvmsg(struct ipmi_softc * sc,int maxlen,int * rxlen,uint8_t * data)799 kcs_recvmsg(struct ipmi_softc *sc, int maxlen, int *rxlen, uint8_t * data)
800 {
801 int idx, sts;
802
803 for (idx = 0; idx < maxlen; idx++) {
804 sts = kcs_read_data(sc, &data[idx]);
805 if (sts != KCS_READ_STATE)
806 break;
807 }
808 sts = kcs_wait(sc, KCS_IBF, 0, __func__);
809 *rxlen = idx;
810 if (sts != KCS_IDLE_STATE) {
811 dbg_printf(1, "%s: %d/%d <%#.2x>\n",
812 __func__, idx, maxlen, sts);
813 return -1;
814 }
815
816 dbg_dump(50, __func__, idx, data);
817
818 return 0;
819 }
820
821 static int
kcs_reset(struct ipmi_softc * sc)822 kcs_reset(struct ipmi_softc *sc)
823 {
824 return -1;
825 }
826
827 static int
kcs_probe(struct ipmi_softc * sc)828 kcs_probe(struct ipmi_softc *sc)
829 {
830 uint8_t v;
831
832 v = bmc_read(sc, _KCS_STATUS_REGISTER);
833 #if 0
834 printf("%s: %2x\n", __func__, v);
835 printf(" STS: %2x\n", v & KCS_STATE_MASK);
836 printf(" ATN: %2x\n", v & KCS_SMS_ATN);
837 printf(" C/D: %2x\n", v & KCS_CD);
838 printf(" IBF: %2x\n", v & KCS_IBF);
839 printf(" OBF: %2x\n", v & KCS_OBF);
840 #else
841 __USE(v);
842 #endif
843 return 0;
844 }
845
846 /*
847 * IPMI code
848 */
849 #define READ_SMS_BUFFER 0x37
850 #define WRITE_I2C 0x50
851
852 #define GET_MESSAGE_CMD 0x33
853 #define SEND_MESSAGE_CMD 0x34
854
855 #define IPMB_CHANNEL_NUMBER 0
856
857 #define PUBLIC_BUS 0
858
859 #define MIN_I2C_PACKET_SIZE 3
860 #define MIN_IMB_PACKET_SIZE 7 /* one byte for cksum */
861
862 #define MIN_BTBMC_REQ_SIZE 4
863 #define MIN_BTBMC_RSP_SIZE 5
864 #define MIN_BMC_REQ_SIZE 2
865 #define MIN_BMC_RSP_SIZE 3
866
867 #define BMC_SA 0x20 /* BMC/ESM3 */
868 #define FPC_SA 0x22 /* front panel */
869 #define BP_SA 0xC0 /* Primary Backplane */
870 #define BP2_SA 0xC2 /* Secondary Backplane */
871 #define PBP_SA 0xC4 /* Peripheral Backplane */
872 #define DRAC_SA 0x28 /* DRAC-III */
873 #define DRAC3_SA 0x30 /* DRAC-III */
874 #define BMC_LUN 0
875 #define SMS_LUN 2
876
877 struct ipmi_request {
878 uint8_t rsSa;
879 uint8_t rsLun;
880 uint8_t netFn;
881 uint8_t cmd;
882 uint8_t data_len;
883 uint8_t *data;
884 };
885
886 struct ipmi_response {
887 uint8_t cCode;
888 uint8_t data_len;
889 uint8_t *data;
890 };
891
892 struct ipmi_bmc_request {
893 uint8_t bmc_nfLn;
894 uint8_t bmc_cmd;
895 uint8_t bmc_data_len;
896 uint8_t bmc_data[1];
897 };
898
899 struct ipmi_bmc_response {
900 uint8_t bmc_nfLn;
901 uint8_t bmc_cmd;
902 uint8_t bmc_cCode;
903 uint8_t bmc_data_len;
904 uint8_t bmc_data[1];
905 };
906
907
908 CFATTACH_DECL2_NEW(ipmi, sizeof(struct ipmi_softc),
909 ipmi_match, ipmi_attach, ipmi_detach, NULL, NULL, NULL);
910
911 static void
dumpb(const char * lbl,int len,const uint8_t * data)912 dumpb(const char *lbl, int len, const uint8_t *data)
913 {
914 int idx;
915
916 printf("%s: ", lbl);
917 for (idx = 0; idx < len; idx++)
918 printf("%.2x ", data[idx]);
919
920 printf("\n");
921 }
922
923 /*
924 * bt_buildmsg builds an IPMI message from a nfLun, cmd, and data
925 * This is used by BT protocol
926 *
927 * Returns a buffer to an allocated message, txlen contains length
928 * of allocated message
929 */
930 static void *
bt_buildmsg(struct ipmi_softc * sc,int nfLun,int cmd,int len,const void * data,int * txlen)931 bt_buildmsg(struct ipmi_softc *sc, int nfLun, int cmd, int len,
932 const void *data, int *txlen)
933 {
934 uint8_t *buf;
935
936 /* Block transfer needs 4 extra bytes: length/netfn/seq/cmd + data */
937 *txlen = len + 4;
938 buf = ipmi_buf_acquire(sc, *txlen);
939 if (buf == NULL)
940 return NULL;
941
942 buf[IPMI_BTMSG_LEN] = len + 3;
943 buf[IPMI_BTMSG_NFLN] = nfLun;
944 buf[IPMI_BTMSG_SEQ] = sc->sc_btseq++;
945 buf[IPMI_BTMSG_CMD] = cmd;
946 if (len && data)
947 memcpy(buf + IPMI_BTMSG_DATASND, data, len);
948
949 return buf;
950 }
951
952 /*
953 * cmn_buildmsg builds an IPMI message from a nfLun, cmd, and data
954 * This is used by both SMIC and KCS protocols
955 *
956 * Returns a buffer to an allocated message, txlen contains length
957 * of allocated message
958 */
959 static void *
cmn_buildmsg(struct ipmi_softc * sc,int nfLun,int cmd,int len,const void * data,int * txlen)960 cmn_buildmsg(struct ipmi_softc *sc, int nfLun, int cmd, int len,
961 const void *data, int *txlen)
962 {
963 uint8_t *buf;
964
965 /* Common needs two extra bytes: nfLun/cmd + data */
966 *txlen = len + 2;
967 buf = ipmi_buf_acquire(sc, *txlen);
968 if (buf == NULL)
969 return NULL;
970
971 buf[IPMI_MSG_NFLN] = nfLun;
972 buf[IPMI_MSG_CMD] = cmd;
973 if (len && data)
974 memcpy(buf + IPMI_MSG_DATASND, data, len);
975
976 return buf;
977 }
978
979 /*
980 * ipmi_sendcmd: caller must hold sc_cmd_mtx.
981 *
982 * Send an IPMI command
983 */
984 static int
ipmi_sendcmd(struct ipmi_softc * sc,int rssa,int rslun,int netfn,int cmd,int txlen,const void * data)985 ipmi_sendcmd(struct ipmi_softc *sc, int rssa, int rslun, int netfn, int cmd,
986 int txlen, const void *data)
987 {
988 uint8_t *buf;
989 int rc = -1;
990
991 dbg_printf(50, "%s: rssa=%#.2x nfln=%#.2x cmd=%#.2x len=%#.2x\n",
992 __func__, rssa, NETFN_LUN(netfn, rslun), cmd, txlen);
993 dbg_dump(10, __func__, txlen, data);
994 if (rssa != BMC_SA) {
995 #if 0
996 buf = sc->sc_if->buildmsg(sc, NETFN_LUN(APP_NETFN, BMC_LUN),
997 APP_SEND_MESSAGE, 7 + txlen, NULL, &txlen);
998 pI2C->bus = (sc->if_ver == 0x09) ?
999 PUBLIC_BUS :
1000 IPMB_CHANNEL_NUMBER;
1001
1002 imbreq->rsSa = rssa;
1003 imbreq->nfLn = NETFN_LUN(netfn, rslun);
1004 imbreq->cSum1 = -(imbreq->rsSa + imbreq->nfLn);
1005 imbreq->rqSa = BMC_SA;
1006 imbreq->seqLn = NETFN_LUN(sc->imb_seq++, SMS_LUN);
1007 imbreq->cmd = cmd;
1008 if (txlen)
1009 memcpy(imbreq->data, data, txlen);
1010 /* Set message checksum */
1011 imbreq->data[txlen] = cksum8(&imbreq->rqSa, txlen + 3);
1012 #endif
1013 goto done;
1014 } else
1015 buf = sc->sc_if->buildmsg(sc, NETFN_LUN(netfn, rslun), cmd,
1016 txlen, data, &txlen);
1017
1018 if (buf == NULL) {
1019 aprint_error_dev(sc->sc_dev, "sendcmd buffer busy\n");
1020 goto done;
1021 }
1022 rc = sc->sc_if->sendmsg(sc, txlen, buf);
1023 ipmi_buf_release(sc, buf);
1024
1025 ipmi_delay(sc, 50); /* give bmc chance to digest command */
1026
1027 done:
1028 return rc;
1029 }
1030
1031 static void
ipmi_buf_release(struct ipmi_softc * sc,char * buf)1032 ipmi_buf_release(struct ipmi_softc *sc, char *buf)
1033 {
1034 KASSERT(sc->sc_buf_rsvd);
1035 KASSERT(sc->sc_buf == buf);
1036 sc->sc_buf_rsvd = false;
1037 }
1038
1039 static char *
ipmi_buf_acquire(struct ipmi_softc * sc,size_t len)1040 ipmi_buf_acquire(struct ipmi_softc *sc, size_t len)
1041 {
1042 KASSERT(len <= sizeof(sc->sc_buf));
1043
1044 if (sc->sc_buf_rsvd || len > sizeof(sc->sc_buf))
1045 return NULL;
1046 sc->sc_buf_rsvd = true;
1047 return sc->sc_buf;
1048 }
1049
1050 /*
1051 * ipmi_recvcmd: caller must hold sc_cmd_mtx.
1052 */
1053 static int
ipmi_recvcmd(struct ipmi_softc * sc,int maxlen,int * rxlen,void * data)1054 ipmi_recvcmd(struct ipmi_softc *sc, int maxlen, int *rxlen, void *data)
1055 {
1056 uint8_t *buf, rc = 0;
1057 int rawlen;
1058
1059 /* Need three extra bytes: netfn/cmd/ccode + data */
1060 buf = ipmi_buf_acquire(sc, maxlen + 3);
1061 if (buf == NULL) {
1062 aprint_error_dev(sc->sc_dev, "%s: malloc fails\n", __func__);
1063 return -1;
1064 }
1065 /* Receive message from interface, copy out result data */
1066 if (sc->sc_if->recvmsg(sc, maxlen + 3, &rawlen, buf)) {
1067 ipmi_buf_release(sc, buf);
1068 return -1;
1069 }
1070
1071 *rxlen = rawlen >= IPMI_MSG_DATARCV ? rawlen - IPMI_MSG_DATARCV : 0;
1072 if (*rxlen > 0 && data)
1073 memcpy(data, buf + IPMI_MSG_DATARCV, *rxlen);
1074
1075 if ((rc = buf[IPMI_MSG_CCODE]) != 0)
1076 dbg_printf(1, "%s: nfln=%#.2x cmd=%#.2x err=%#.2x\n", __func__,
1077 buf[IPMI_MSG_NFLN], buf[IPMI_MSG_CMD], buf[IPMI_MSG_CCODE]);
1078
1079 dbg_printf(50, "%s: nfln=%#.2x cmd=%#.2x err=%#.2x len=%#.2x\n",
1080 __func__, buf[IPMI_MSG_NFLN], buf[IPMI_MSG_CMD],
1081 buf[IPMI_MSG_CCODE], *rxlen);
1082 dbg_dump(10, __func__, *rxlen, data);
1083
1084 ipmi_buf_release(sc, buf);
1085
1086 return rc;
1087 }
1088
1089 /*
1090 * ipmi_delay: caller must hold sc_cmd_mtx.
1091 */
1092 static void
ipmi_delay(struct ipmi_softc * sc,int ms)1093 ipmi_delay(struct ipmi_softc *sc, int ms)
1094 {
1095 if (cold) {
1096 delay(ms * 1000);
1097 return;
1098 }
1099 mutex_enter(&sc->sc_sleep_mtx);
1100 cv_timedwait(&sc->sc_cmd_sleep, &sc->sc_sleep_mtx, mstohz(ms));
1101 mutex_exit(&sc->sc_sleep_mtx);
1102 }
1103
1104 /* Read a partial SDR entry */
1105 static int
get_sdr_partial(struct ipmi_softc * sc,uint16_t recordId,uint16_t reserveId,uint8_t offset,uint8_t length,void * buffer,uint16_t * nxtRecordId)1106 get_sdr_partial(struct ipmi_softc *sc, uint16_t recordId, uint16_t reserveId,
1107 uint8_t offset, uint8_t length, void *buffer, uint16_t *nxtRecordId)
1108 {
1109 uint8_t cmd[256 + 8];
1110 int len;
1111
1112 ((uint16_t *) cmd)[0] = reserveId;
1113 ((uint16_t *) cmd)[1] = recordId;
1114 cmd[4] = offset;
1115 cmd[5] = length;
1116 mutex_enter(&sc->sc_cmd_mtx);
1117 if (ipmi_sendcmd(sc, BMC_SA, 0, STORAGE_NETFN, STORAGE_GET_SDR, 6,
1118 cmd)) {
1119 mutex_exit(&sc->sc_cmd_mtx);
1120 aprint_error_dev(sc->sc_dev, "%s: sendcmd fails\n", __func__);
1121 return -1;
1122 }
1123 if (ipmi_recvcmd(sc, 8 + length, &len, cmd)) {
1124 mutex_exit(&sc->sc_cmd_mtx);
1125 aprint_error_dev(sc->sc_dev, "%s: recvcmd fails\n", __func__);
1126 return -1;
1127 }
1128 mutex_exit(&sc->sc_cmd_mtx);
1129 if (nxtRecordId)
1130 *nxtRecordId = *(uint16_t *) cmd;
1131 memcpy(buffer, cmd + 2, len - 2);
1132
1133 return 0;
1134 }
1135
1136 static int maxsdrlen = 0x10;
1137
1138 /* Read an entire SDR; pass to add sensor */
1139 static int
get_sdr(struct ipmi_softc * sc,uint16_t recid,uint16_t * nxtrec)1140 get_sdr(struct ipmi_softc *sc, uint16_t recid, uint16_t *nxtrec)
1141 {
1142 uint16_t resid = 0;
1143 int len, sdrlen, offset;
1144 uint8_t *psdr;
1145 struct sdrhdr shdr;
1146
1147 mutex_enter(&sc->sc_cmd_mtx);
1148 /* Reserve SDR */
1149 if (ipmi_sendcmd(sc, BMC_SA, 0, STORAGE_NETFN, STORAGE_RESERVE_SDR,
1150 0, NULL)) {
1151 mutex_exit(&sc->sc_cmd_mtx);
1152 aprint_error_dev(sc->sc_dev, "reserve send fails\n");
1153 return -1;
1154 }
1155 if (ipmi_recvcmd(sc, sizeof(resid), &len, &resid)) {
1156 mutex_exit(&sc->sc_cmd_mtx);
1157 aprint_error_dev(sc->sc_dev, "reserve recv fails\n");
1158 return -1;
1159 }
1160 mutex_exit(&sc->sc_cmd_mtx);
1161 /* Get SDR Header */
1162 if (get_sdr_partial(sc, recid, resid, 0, sizeof shdr, &shdr, nxtrec)) {
1163 aprint_error_dev(sc->sc_dev, "get header fails\n");
1164 return -1;
1165 }
1166 /* Allocate space for entire SDR Length of SDR in header does not
1167 * include header length */
1168 sdrlen = sizeof(shdr) + shdr.record_length;
1169 psdr = malloc(sdrlen, M_DEVBUF, M_WAITOK);
1170 if (psdr == NULL)
1171 return -1;
1172
1173 memcpy(psdr, &shdr, sizeof(shdr));
1174
1175 /* Read SDR Data maxsdrlen bytes at a time */
1176 for (offset = sizeof(shdr); offset < sdrlen; offset += maxsdrlen) {
1177 len = sdrlen - offset;
1178 if (len > maxsdrlen)
1179 len = maxsdrlen;
1180
1181 if (get_sdr_partial(sc, recid, resid, offset, len,
1182 psdr + offset, NULL)) {
1183 aprint_error_dev(sc->sc_dev,
1184 "get chunk : %d,%d fails\n", offset, len);
1185 free(psdr, M_DEVBUF);
1186 return -1;
1187 }
1188 }
1189
1190 /* Add SDR to sensor list, if not wanted, free buffer */
1191 if (add_sdr_sensor(sc, psdr) == 0)
1192 free(psdr, M_DEVBUF);
1193
1194 return 0;
1195 }
1196
1197 static int
getbits(uint8_t * bytes,int bitpos,int bitlen)1198 getbits(uint8_t *bytes, int bitpos, int bitlen)
1199 {
1200 int v;
1201 int mask;
1202
1203 bitpos += bitlen - 1;
1204 for (v = 0; bitlen--;) {
1205 v <<= 1;
1206 mask = 1L << (bitpos & 7);
1207 if (bytes[bitpos >> 3] & mask)
1208 v |= 1;
1209 bitpos--;
1210 }
1211
1212 return v;
1213 }
1214
1215 /* Decode IPMI sensor name */
1216 static void
ipmi_sensor_name(char * name,int len,uint8_t typelen,uint8_t * bits)1217 ipmi_sensor_name(char *name, int len, uint8_t typelen, uint8_t *bits)
1218 {
1219 int i, slen;
1220 char bcdplus[] = "0123456789 -.:,_";
1221
1222 slen = typelen & 0x1F;
1223 switch (typelen >> 6) {
1224 case IPMI_NAME_UNICODE:
1225 //unicode
1226 break;
1227
1228 case IPMI_NAME_BCDPLUS:
1229 /* Characters are encoded in 4-bit BCDPLUS */
1230 if (len < slen * 2 + 1)
1231 slen = (len >> 1) - 1;
1232 for (i = 0; i < slen; i++) {
1233 *(name++) = bcdplus[bits[i] >> 4];
1234 *(name++) = bcdplus[bits[i] & 0xF];
1235 }
1236 break;
1237
1238 case IPMI_NAME_ASCII6BIT:
1239 /* Characters are encoded in 6-bit ASCII
1240 * 0x00 - 0x3F maps to 0x20 - 0x5F */
1241 /* XXX: need to calculate max len: slen = 3/4 * len */
1242 if (len < slen + 1)
1243 slen = len - 1;
1244 for (i = 0; i < slen * 8; i += 6)
1245 *(name++) = getbits(bits, i, 6) + ' ';
1246 break;
1247
1248 case IPMI_NAME_ASCII8BIT:
1249 /* Characters are 8-bit ascii */
1250 if (len < slen + 1)
1251 slen = len - 1;
1252 while (slen--)
1253 *(name++) = *(bits++);
1254 break;
1255 }
1256 *name = 0;
1257 }
1258
1259 /* Sign extend a n-bit value */
1260 static long
signextend(unsigned long val,int bits)1261 signextend(unsigned long val, int bits)
1262 {
1263 long msk = (1L << (bits-1))-1;
1264
1265 return -(val & ~msk) | val;
1266 }
1267
1268
1269 /* fixpoint arithmetic */
1270 #define FIX2INT(x) ((int64_t)((x) >> 32))
1271 #define INT2FIX(x) ((int64_t)((uint64_t)(x) << 32))
1272
1273 #define FIX2 0x0000000200000000ll /* 2.0 */
1274 #define FIX3 0x0000000300000000ll /* 3.0 */
1275 #define FIXE 0x00000002b7e15163ll /* 2.71828182845904523536 */
1276 #define FIX10 0x0000000a00000000ll /* 10.0 */
1277 #define FIXMONE 0xffffffff00000000ll /* -1.0 */
1278 #define FIXHALF 0x0000000080000000ll /* 0.5 */
1279 #define FIXTHIRD 0x0000000055555555ll /* 0.33333333333333333333 */
1280
1281 #define FIX1LOG2 0x0000000171547653ll /* 1.0/log(2) */
1282 #define FIX1LOGE 0x0000000100000000ll /* 1.0/log(2.71828182845904523536) */
1283 #define FIX1LOG10 0x000000006F2DEC55ll /* 1.0/log(10) */
1284
1285 #define FIX1E 0x000000005E2D58D9ll /* 1.0/2.71828182845904523536 */
1286
1287 static int64_t fixlog_a[] = {
1288 0x0000000100000000ll /* 1.0/1.0 */,
1289 0xffffffff80000000ll /* -1.0/2.0 */,
1290 0x0000000055555555ll /* 1.0/3.0 */,
1291 0xffffffffc0000000ll /* -1.0/4.0 */,
1292 0x0000000033333333ll /* 1.0/5.0 */,
1293 0x000000002aaaaaabll /* -1.0/6.0 */,
1294 0x0000000024924925ll /* 1.0/7.0 */,
1295 0x0000000020000000ll /* -1.0/8.0 */,
1296 0x000000001c71c71cll /* 1.0/9.0 */
1297 };
1298
1299 static int64_t fixexp_a[] = {
1300 0x0000000100000000ll /* 1.0/1.0 */,
1301 0x0000000100000000ll /* 1.0/1.0 */,
1302 0x0000000080000000ll /* 1.0/2.0 */,
1303 0x000000002aaaaaabll /* 1.0/6.0 */,
1304 0x000000000aaaaaabll /* 1.0/24.0 */,
1305 0x0000000002222222ll /* 1.0/120.0 */,
1306 0x00000000005b05b0ll /* 1.0/720.0 */,
1307 0x00000000000d00d0ll /* 1.0/5040.0 */,
1308 0x000000000001a01all /* 1.0/40320.0 */
1309 };
1310
1311 static int64_t
fixmul(int64_t x,int64_t y)1312 fixmul(int64_t x, int64_t y)
1313 {
1314 int64_t z;
1315 int64_t a,b,c,d;
1316 int neg;
1317
1318 neg = 0;
1319 if (x < 0) {
1320 x = -x;
1321 neg = !neg;
1322 }
1323 if (y < 0) {
1324 y = -y;
1325 neg = !neg;
1326 }
1327
1328 a = FIX2INT(x);
1329 b = x - INT2FIX(a);
1330 c = FIX2INT(y);
1331 d = y - INT2FIX(c);
1332
1333 z = INT2FIX(a*c) + a * d + b * c + (b/2 * d/2 >> 30);
1334
1335 return neg ? -z : z;
1336 }
1337
1338 static int64_t
poly(int64_t x0,int64_t x,int64_t a[],int n)1339 poly(int64_t x0, int64_t x, int64_t a[], int n)
1340 {
1341 int64_t z;
1342 int i;
1343
1344 z = fixmul(x0, a[0]);
1345 for (i=1; i<n; ++i) {
1346 x0 = fixmul(x0, x);
1347 z = fixmul(x0, a[i]) + z;
1348 }
1349 return z;
1350 }
1351
1352 static int64_t
logx(int64_t x,int64_t y)1353 logx(int64_t x, int64_t y)
1354 {
1355 int64_t z;
1356
1357 if (x <= INT2FIX(0)) {
1358 z = INT2FIX(-99999);
1359 goto done;
1360 }
1361
1362 z = INT2FIX(0);
1363 while (x >= FIXE) {
1364 x = fixmul(x, FIX1E);
1365 z += INT2FIX(1);
1366 }
1367 while (x < INT2FIX(1)) {
1368 x = fixmul(x, FIXE);
1369 z -= INT2FIX(1);
1370 }
1371
1372 x -= INT2FIX(1);
1373 z += poly(x, x, fixlog_a, sizeof(fixlog_a)/sizeof(fixlog_a[0]));
1374 z = fixmul(z, y);
1375
1376 done:
1377 return z;
1378 }
1379
1380 static int64_t
powx(int64_t x,int64_t y)1381 powx(int64_t x, int64_t y)
1382 {
1383 int64_t k;
1384
1385 if (x == INT2FIX(0))
1386 goto done;
1387
1388 x = logx(x,y);
1389
1390 if (x < INT2FIX(0)) {
1391 x = INT2FIX(0) - x;
1392 k = -FIX2INT(x);
1393 x = INT2FIX(-k) - x;
1394 } else {
1395 k = FIX2INT(x);
1396 x = x - INT2FIX(k);
1397 }
1398
1399 x = poly(INT2FIX(1), x, fixexp_a, sizeof(fixexp_a)/sizeof(fixexp_a[0]));
1400
1401 while (k < 0) {
1402 x = fixmul(x, FIX1E);
1403 ++k;
1404 }
1405 while (k > 0) {
1406 x = fixmul(x, FIXE);
1407 --k;
1408 }
1409
1410 done:
1411 return x;
1412 }
1413
1414 /* Convert IPMI reading from sensor factors */
1415 static long
ipmi_convert(uint8_t v,struct sdrtype1 * s1,long adj)1416 ipmi_convert(uint8_t v, struct sdrtype1 *s1, long adj)
1417 {
1418 int64_t M, B;
1419 char K1, K2;
1420 int64_t val, v1, v2, vs;
1421 int sign = (s1->units1 >> 6) & 0x3;
1422
1423 vs = (sign == 0x1 || sign == 0x2) ? (int8_t)v : v;
1424 if ((vs < 0) && (sign == 0x1))
1425 vs++;
1426
1427 /* Calculate linear reading variables */
1428 M = signextend((((short)(s1->m_tolerance & 0xC0)) << 2) + s1->m, 10);
1429 B = signextend((((short)(s1->b_accuracy & 0xC0)) << 2) + s1->b, 10);
1430 K1 = signextend(s1->rbexp & 0xF, 4);
1431 K2 = signextend(s1->rbexp >> 4, 4);
1432
1433 /* Calculate sensor reading:
1434 * y = L((M * v + (B * 10^K1)) * 10^(K2+adj)
1435 *
1436 * This commutes out to:
1437 * y = L(M*v * 10^(K2+adj) + B * 10^(K1+K2+adj)); */
1438 v1 = powx(FIX10, INT2FIX(K2 + adj));
1439 v2 = powx(FIX10, INT2FIX(K1 + K2 + adj));
1440 val = M * vs * v1 + B * v2;
1441
1442 /* Linearization function: y = f(x) 0 : y = x 1 : y = ln(x) 2 : y =
1443 * log10(x) 3 : y = log2(x) 4 : y = e^x 5 : y = 10^x 6 : y = 2^x 7 : y
1444 * = 1/x 8 : y = x^2 9 : y = x^3 10 : y = square root(x) 11 : y = cube
1445 * root(x) */
1446 switch (s1->linear & 0x7f) {
1447 case 0: break;
1448 case 1: val = logx(val,FIX1LOGE); break;
1449 case 2: val = logx(val,FIX1LOG10); break;
1450 case 3: val = logx(val,FIX1LOG2); break;
1451 case 4: val = powx(FIXE,val); break;
1452 case 5: val = powx(FIX10,val); break;
1453 case 6: val = powx(FIX2,val); break;
1454 case 7: val = powx(val,FIXMONE); break;
1455 case 8: val = powx(val,FIX2); break;
1456 case 9: val = powx(val,FIX3); break;
1457 case 10: val = powx(val,FIXHALF); break;
1458 case 11: val = powx(val,FIXTHIRD); break;
1459 }
1460
1461 return FIX2INT(val);
1462 }
1463
1464 static int32_t
ipmi_convert_sensor(uint8_t * reading,struct ipmi_sensor * psensor)1465 ipmi_convert_sensor(uint8_t *reading, struct ipmi_sensor *psensor)
1466 {
1467 struct sdrtype1 *s1 = (struct sdrtype1 *)psensor->i_sdr;
1468 int32_t val;
1469
1470 switch (psensor->i_envtype) {
1471 case ENVSYS_STEMP:
1472 val = ipmi_convert(reading[0], s1, 6) + 273150000;
1473 break;
1474
1475 case ENVSYS_SVOLTS_DC:
1476 val = ipmi_convert(reading[0], s1, 6);
1477 break;
1478
1479 case ENVSYS_SFANRPM:
1480 val = ipmi_convert(reading[0], s1, 0);
1481 if (((s1->units1>>3)&0x7) == 0x3)
1482 val *= 60; /* RPS -> RPM */
1483 break;
1484 default:
1485 val = 0;
1486 break;
1487 }
1488 return val;
1489 }
1490
1491 static void
ipmi_set_limits(struct sysmon_envsys * sme,envsys_data_t * edata,sysmon_envsys_lim_t * limits,uint32_t * props)1492 ipmi_set_limits(struct sysmon_envsys *sme, envsys_data_t *edata,
1493 sysmon_envsys_lim_t *limits, uint32_t *props)
1494 {
1495 struct ipmi_sensor *ipmi_s;
1496
1497 /* Find the ipmi_sensor corresponding to this edata */
1498 SLIST_FOREACH(ipmi_s, &ipmi_sensor_list, i_list) {
1499 if (ipmi_s->i_envnum == edata->sensor) {
1500 if (limits == NULL) {
1501 limits = &ipmi_s->i_deflims;
1502 props = &ipmi_s->i_defprops;
1503 }
1504 *props |= PROP_DRIVER_LIMITS;
1505 ipmi_s->i_limits = *limits;
1506 ipmi_s->i_props = *props;
1507 return;
1508 }
1509 }
1510 return;
1511 }
1512
1513 static void
ipmi_get_limits(struct sysmon_envsys * sme,envsys_data_t * edata,sysmon_envsys_lim_t * limits,uint32_t * props)1514 ipmi_get_limits(struct sysmon_envsys *sme, envsys_data_t *edata,
1515 sysmon_envsys_lim_t *limits, uint32_t *props)
1516 {
1517 struct ipmi_sensor *ipmi_s;
1518 struct ipmi_softc *sc = sme->sme_cookie;
1519
1520 /* Find the ipmi_sensor corresponding to this edata */
1521 SLIST_FOREACH(ipmi_s, &ipmi_sensor_list, i_list) {
1522 if (ipmi_s->i_envnum == edata->sensor) {
1523 ipmi_get_sensor_limits(sc, ipmi_s, limits, props);
1524 ipmi_s->i_limits = *limits;
1525 ipmi_s->i_props = *props;
1526 if (ipmi_s->i_defprops == 0) {
1527 ipmi_s->i_defprops = *props;
1528 ipmi_s->i_deflims = *limits;
1529 }
1530 return;
1531 }
1532 }
1533 return;
1534 }
1535
1536 /* valid bits for (upper,lower) x (non-recoverable, critical, warn) */
1537 #define UN 0x20
1538 #define UC 0x10
1539 #define UW 0x08
1540 #define LN 0x04
1541 #define LC 0x02
1542 #define LW 0x01
1543
1544 static void
ipmi_get_sensor_limits(struct ipmi_softc * sc,struct ipmi_sensor * psensor,sysmon_envsys_lim_t * limits,uint32_t * props)1545 ipmi_get_sensor_limits(struct ipmi_softc *sc, struct ipmi_sensor *psensor,
1546 sysmon_envsys_lim_t *limits, uint32_t *props)
1547 {
1548 struct sdrtype1 *s1 = (struct sdrtype1 *)psensor->i_sdr;
1549 bool failure;
1550 int rxlen;
1551 uint8_t data[32], valid;
1552 uint32_t prop_critmax, prop_warnmax, prop_critmin, prop_warnmin;
1553 int32_t *pcritmax, *pwarnmax, *pcritmin, *pwarnmin;
1554
1555 *props &= ~(PROP_CRITMIN | PROP_CRITMAX | PROP_WARNMIN | PROP_WARNMAX);
1556 data[0] = psensor->i_num;
1557 mutex_enter(&sc->sc_cmd_mtx);
1558 failure =
1559 ipmi_sendcmd(sc, s1->owner_id, s1->owner_lun,
1560 SE_NETFN, SE_GET_SENSOR_THRESHOLD, 1, data) ||
1561 ipmi_recvcmd(sc, sizeof(data), &rxlen, data);
1562 mutex_exit(&sc->sc_cmd_mtx);
1563 if (failure)
1564 return;
1565
1566 dbg_printf(25, "%s: %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x %#.2x\n",
1567 __func__, data[0], data[1], data[2], data[3], data[4], data[5],
1568 data[6]);
1569
1570 switch (s1->linear & 0x7f) {
1571 case 7: /* 1/x sensor, exchange upper and lower limits */
1572 prop_critmax = PROP_CRITMIN;
1573 prop_warnmax = PROP_WARNMIN;
1574 prop_critmin = PROP_CRITMAX;
1575 prop_warnmin = PROP_WARNMAX;
1576 pcritmax = &limits->sel_critmin;
1577 pwarnmax = &limits->sel_warnmin;
1578 pcritmin = &limits->sel_critmax;
1579 pwarnmin = &limits->sel_warnmax;
1580 break;
1581 default:
1582 prop_critmax = PROP_CRITMAX;
1583 prop_warnmax = PROP_WARNMAX;
1584 prop_critmin = PROP_CRITMIN;
1585 prop_warnmin = PROP_WARNMIN;
1586 pcritmax = &limits->sel_critmax;
1587 pwarnmax = &limits->sel_warnmax;
1588 pcritmin = &limits->sel_critmin;
1589 pwarnmin = &limits->sel_warnmin;
1590 break;
1591 }
1592
1593 valid = data[0];
1594
1595 /* if upper non-recoverable < warning, ignore it */
1596 if ((valid & (UN|UW)) == (UN|UW) && data[6] < data[4])
1597 valid ^= UN;
1598 /* if upper critical < warning, ignore it */
1599 if ((valid & (UC|UW)) == (UC|UW) && data[5] < data[4])
1600 valid ^= UC;
1601
1602 /* if lower non-recoverable > warning, ignore it */
1603 if ((data[0] & (LN|LW)) == (LN|LW) && data[3] > data[1])
1604 valid ^= LN;
1605 /* if lower critical > warning, ignore it */
1606 if ((data[0] & (LC|LW)) == (LC|LW) && data[2] > data[1])
1607 valid ^= LC;
1608
1609 if (valid & UN && data[6] != 0xff) {
1610 *pcritmax = ipmi_convert_sensor(&data[6], psensor);
1611 *props |= prop_critmax;
1612 }
1613 if (valid & UC && data[5] != 0xff) {
1614 *pcritmax = ipmi_convert_sensor(&data[5], psensor);
1615 *props |= prop_critmax;
1616 }
1617 if (valid & UW && data[4] != 0xff) {
1618 *pwarnmax = ipmi_convert_sensor(&data[4], psensor);
1619 *props |= prop_warnmax;
1620 }
1621 if (valid & LN && data[3] != 0x00) {
1622 *pcritmin = ipmi_convert_sensor(&data[3], psensor);
1623 *props |= prop_critmin;
1624 }
1625 if (valid & LC && data[2] != 0x00) {
1626 *pcritmin = ipmi_convert_sensor(&data[2], psensor);
1627 *props |= prop_critmin;
1628 }
1629 if (valid & LW && data[1] != 0x00) {
1630 *pwarnmin = ipmi_convert_sensor(&data[1], psensor);
1631 *props |= prop_warnmin;
1632 }
1633 return;
1634 }
1635
1636 static int
ipmi_sensor_status(struct ipmi_softc * sc,struct ipmi_sensor * psensor,envsys_data_t * edata,uint8_t * reading)1637 ipmi_sensor_status(struct ipmi_softc *sc, struct ipmi_sensor *psensor,
1638 envsys_data_t *edata, uint8_t *reading)
1639 {
1640 int etype;
1641
1642 /* Get reading of sensor */
1643 edata->value_cur = ipmi_convert_sensor(reading, psensor);
1644
1645 /* Return Sensor Status */
1646 etype = (psensor->i_etype << 8) + psensor->i_stype;
1647 switch (etype) {
1648 case IPMI_SENSOR_TYPE_TEMP:
1649 case IPMI_SENSOR_TYPE_VOLT:
1650 case IPMI_SENSOR_TYPE_FAN:
1651 if (psensor->i_props & PROP_CRITMAX &&
1652 edata->value_cur > psensor->i_limits.sel_critmax)
1653 return ENVSYS_SCRITOVER;
1654
1655 if (psensor->i_props & PROP_WARNMAX &&
1656 edata->value_cur > psensor->i_limits.sel_warnmax)
1657 return ENVSYS_SWARNOVER;
1658
1659 if (psensor->i_props & PROP_CRITMIN &&
1660 edata->value_cur < psensor->i_limits.sel_critmin)
1661 return ENVSYS_SCRITUNDER;
1662
1663 if (psensor->i_props & PROP_WARNMIN &&
1664 edata->value_cur < psensor->i_limits.sel_warnmin)
1665 return ENVSYS_SWARNUNDER;
1666
1667 break;
1668
1669 case IPMI_SENSOR_TYPE_INTRUSION:
1670 edata->value_cur = (reading[2] & 1) ? 0 : 1;
1671 if (reading[2] & 0x1)
1672 return ENVSYS_SCRITICAL;
1673 break;
1674
1675 case IPMI_SENSOR_TYPE_PWRSUPPLY:
1676 /* Reading: 1 = present+powered, 0 = otherwise */
1677 edata->value_cur = (reading[2] & 1) ? 0 : 1;
1678 if (reading[2] & 0x10) {
1679 /* XXX: Need envsys type for Power Supply types
1680 * ok: power supply installed && powered
1681 * warn: power supply installed && !powered
1682 * crit: power supply !installed
1683 */
1684 return ENVSYS_SCRITICAL;
1685 }
1686 if (reading[2] & 0x08) {
1687 /* Power supply AC lost */
1688 return ENVSYS_SWARNOVER;
1689 }
1690 break;
1691 }
1692
1693 return ENVSYS_SVALID;
1694 }
1695
1696 static int
read_sensor(struct ipmi_softc * sc,struct ipmi_sensor * psensor)1697 read_sensor(struct ipmi_softc *sc, struct ipmi_sensor *psensor)
1698 {
1699 struct sdrtype1 *s1 = (struct sdrtype1 *) psensor->i_sdr;
1700 uint8_t data[8];
1701 int rxlen;
1702 envsys_data_t *edata = &sc->sc_sensor[psensor->i_envnum];
1703
1704 memset(data, 0, sizeof(data));
1705 data[0] = psensor->i_num;
1706
1707 mutex_enter(&sc->sc_cmd_mtx);
1708 if (ipmi_sendcmd(sc, s1->owner_id, s1->owner_lun, SE_NETFN,
1709 SE_GET_SENSOR_READING, 1, data))
1710 goto err;
1711
1712 if (ipmi_recvcmd(sc, sizeof(data), &rxlen, data))
1713 goto err;
1714 mutex_exit(&sc->sc_cmd_mtx);
1715
1716 dbg_printf(10, "m=%u, m_tolerance=%u, b=%u, b_accuracy=%u, "
1717 "rbexp=%u, linear=%d\n", s1->m, s1->m_tolerance, s1->b,
1718 s1->b_accuracy, s1->rbexp, s1->linear);
1719 dbg_printf(10, "values=%#.2x %#.2x %#.2x %#.2x %s\n",
1720 data[0],data[1],data[2],data[3], edata->desc);
1721 if (IPMI_INVALID_SENSOR_P(data[1])) {
1722 /* Check if sensor is valid */
1723 edata->state = ENVSYS_SINVALID;
1724 } else {
1725 edata->state = ipmi_sensor_status(sc, psensor, edata, data);
1726 }
1727 return 0;
1728 err:
1729 mutex_exit(&sc->sc_cmd_mtx);
1730 return -1;
1731 }
1732
1733 static int
ipmi_sensor_type(int type,int ext_type,int entity)1734 ipmi_sensor_type(int type, int ext_type, int entity)
1735 {
1736 switch (ext_type << 8L | type) {
1737 case IPMI_SENSOR_TYPE_TEMP:
1738 return ENVSYS_STEMP;
1739
1740 case IPMI_SENSOR_TYPE_VOLT:
1741 return ENVSYS_SVOLTS_DC;
1742
1743 case IPMI_SENSOR_TYPE_FAN:
1744 return ENVSYS_SFANRPM;
1745
1746 case IPMI_SENSOR_TYPE_PWRSUPPLY:
1747 if (entity == IPMI_ENTITY_PWRSUPPLY)
1748 return ENVSYS_INDICATOR;
1749 break;
1750
1751 case IPMI_SENSOR_TYPE_INTRUSION:
1752 return ENVSYS_INDICATOR;
1753 }
1754
1755 return -1;
1756 }
1757
1758 /* Add Sensor to BSD Sysctl interface */
1759 static int
add_sdr_sensor(struct ipmi_softc * sc,uint8_t * psdr)1760 add_sdr_sensor(struct ipmi_softc *sc, uint8_t *psdr)
1761 {
1762 int rc;
1763 struct sdrtype1 *s1 = (struct sdrtype1 *)psdr;
1764 struct sdrtype2 *s2 = (struct sdrtype2 *)psdr;
1765 char name[64];
1766
1767 switch (s1->sdrhdr.record_type) {
1768 case IPMI_SDR_TYPEFULL:
1769 ipmi_sensor_name(name, sizeof(name), s1->typelen, s1->name);
1770 rc = add_child_sensors(sc, psdr, 1, s1->sensor_num,
1771 s1->sensor_type, s1->event_code, 0, s1->entity_id, name);
1772 break;
1773
1774 case IPMI_SDR_TYPECOMPACT:
1775 ipmi_sensor_name(name, sizeof(name), s2->typelen, s2->name);
1776 rc = add_child_sensors(sc, psdr, s2->share1 & 0xF,
1777 s2->sensor_num, s2->sensor_type, s2->event_code,
1778 s2->share2 & 0x7F, s2->entity_id, name);
1779 break;
1780
1781 default:
1782 return 0;
1783 }
1784
1785 return rc;
1786 }
1787
1788 static int
ipmi_is_dupname(char * name)1789 ipmi_is_dupname(char *name)
1790 {
1791 struct ipmi_sensor *ipmi_s;
1792
1793 SLIST_FOREACH(ipmi_s, &ipmi_sensor_list, i_list) {
1794 if (strcmp(ipmi_s->i_envdesc, name) == 0) {
1795 return 1;
1796 }
1797 }
1798 return 0;
1799 }
1800
1801 static int
add_child_sensors(struct ipmi_softc * sc,uint8_t * psdr,int count,int sensor_num,int sensor_type,int ext_type,int sensor_base,int entity,const char * name)1802 add_child_sensors(struct ipmi_softc *sc, uint8_t *psdr, int count,
1803 int sensor_num, int sensor_type, int ext_type, int sensor_base,
1804 int entity, const char *name)
1805 {
1806 int typ, idx, dupcnt, c;
1807 char *e;
1808 struct ipmi_sensor *psensor;
1809 struct sdrtype1 *s1 = (struct sdrtype1 *)psdr;
1810
1811 typ = ipmi_sensor_type(sensor_type, ext_type, entity);
1812 if (typ == -1) {
1813 dbg_printf(5, "Unknown sensor type:%#.2x et:%#.2x sn:%#.2x "
1814 "name:%s\n", sensor_type, ext_type, sensor_num, name);
1815 return 0;
1816 }
1817 dupcnt = 0;
1818 sc->sc_nsensors += count;
1819 for (idx = 0; idx < count; idx++) {
1820 psensor = malloc(sizeof(struct ipmi_sensor), M_DEVBUF,
1821 M_WAITOK);
1822 if (psensor == NULL)
1823 break;
1824
1825 memset(psensor, 0, sizeof(struct ipmi_sensor));
1826
1827 /* Initialize BSD Sensor info */
1828 psensor->i_sdr = psdr;
1829 psensor->i_num = sensor_num + idx;
1830 psensor->i_stype = sensor_type;
1831 psensor->i_etype = ext_type;
1832 psensor->i_envtype = typ;
1833 if (count > 1)
1834 snprintf(psensor->i_envdesc,
1835 sizeof(psensor->i_envdesc),
1836 "%s - %d", name, sensor_base + idx);
1837 else
1838 strlcpy(psensor->i_envdesc, name,
1839 sizeof(psensor->i_envdesc));
1840
1841 /*
1842 * Check for duplicates. If there are duplicates,
1843 * make sure there is space in the name (if not,
1844 * truncate to make space) for a count (1-99) to
1845 * add to make the name unique. If we run the
1846 * counter out, just accept the duplicate (@name99)
1847 * for now.
1848 */
1849 if (ipmi_is_dupname(psensor->i_envdesc)) {
1850 if (strlen(psensor->i_envdesc) >=
1851 sizeof(psensor->i_envdesc) - 3) {
1852 e = psensor->i_envdesc +
1853 sizeof(psensor->i_envdesc) - 3;
1854 } else {
1855 e = psensor->i_envdesc +
1856 strlen(psensor->i_envdesc);
1857 }
1858 c = psensor->i_envdesc +
1859 sizeof(psensor->i_envdesc) - e;
1860 do {
1861 dupcnt++;
1862 snprintf(e, c, "%d", dupcnt);
1863 } while (dupcnt < 100 &&
1864 ipmi_is_dupname(psensor->i_envdesc));
1865 }
1866
1867 dbg_printf(5, "%s: %#.4x %#.2x:%d ent:%#.2x:%#.2x %s\n",
1868 __func__,
1869 s1->sdrhdr.record_id, s1->sensor_type,
1870 typ, s1->entity_id, s1->entity_instance,
1871 psensor->i_envdesc);
1872 SLIST_INSERT_HEAD(&ipmi_sensor_list, psensor, i_list);
1873 }
1874
1875 return 1;
1876 }
1877
1878 #if 0
1879 /* Interrupt handler */
1880 static int
1881 ipmi_intr(void *arg)
1882 {
1883 struct ipmi_softc *sc = (struct ipmi_softc *)arg;
1884 int v;
1885
1886 v = bmc_read(sc, _KCS_STATUS_REGISTER);
1887 if (v & KCS_OBF)
1888 ++ipmi_nintr;
1889
1890 return 0;
1891 }
1892 #endif
1893
1894 /* Handle IPMI Timer - reread sensor values */
1895 static void
ipmi_refresh_sensors(struct ipmi_softc * sc)1896 ipmi_refresh_sensors(struct ipmi_softc *sc)
1897 {
1898
1899 if (SLIST_EMPTY(&ipmi_sensor_list))
1900 return;
1901
1902 sc->current_sensor = SLIST_NEXT(sc->current_sensor, i_list);
1903 if (sc->current_sensor == NULL)
1904 sc->current_sensor = SLIST_FIRST(&ipmi_sensor_list);
1905
1906 if (read_sensor(sc, sc->current_sensor)) {
1907 dbg_printf(1, "%s: error reading\n", __func__);
1908 }
1909 }
1910
1911 static int
ipmi_map_regs(struct ipmi_softc * sc,struct ipmi_attach_args * ia)1912 ipmi_map_regs(struct ipmi_softc *sc, struct ipmi_attach_args *ia)
1913 {
1914 int error;
1915
1916 sc->sc_if = ipmi_get_if(ia->iaa_if_type);
1917 if (sc->sc_if == NULL)
1918 return -1;
1919
1920 if (ia->iaa_if_iotype == 'i')
1921 sc->sc_iot = ia->iaa_iot;
1922 else
1923 sc->sc_iot = ia->iaa_memt;
1924
1925 sc->sc_if_rev = ia->iaa_if_rev;
1926 sc->sc_if_iospacing = ia->iaa_if_iospacing;
1927 if ((error = bus_space_map(sc->sc_iot, ia->iaa_if_iobase,
1928 sc->sc_if->nregs * sc->sc_if_iospacing, 0, &sc->sc_ioh)) != 0) {
1929 const char *xname = sc->sc_dev ? device_xname(sc->sc_dev) :
1930 "ipmi0";
1931 aprint_error("%s: %s:bus_space_map(..., %" PRIx64 ", %x"
1932 ", 0, %p) type %c failed %d\n",
1933 xname, __func__, (uint64_t)ia->iaa_if_iobase,
1934 sc->sc_if->nregs * sc->sc_if_iospacing, &sc->sc_ioh,
1935 ia->iaa_if_iotype, error);
1936 return -1;
1937 }
1938 #if 0
1939 if (iaa->if_if_irq != -1)
1940 sc->ih = isa_intr_establish(-1, iaa->if_if_irq,
1941 iaa->if_irqlvl, IPL_BIO, ipmi_intr, sc,
1942 device_xname(sc->sc_dev);
1943 #endif
1944 return 0;
1945 }
1946
1947 static void
ipmi_unmap_regs(struct ipmi_softc * sc)1948 ipmi_unmap_regs(struct ipmi_softc *sc)
1949 {
1950 bus_space_unmap(sc->sc_iot, sc->sc_ioh,
1951 sc->sc_if->nregs * sc->sc_if_iospacing);
1952 }
1953
1954 static int
ipmi_match(device_t parent,cfdata_t cf,void * aux)1955 ipmi_match(device_t parent, cfdata_t cf, void *aux)
1956 {
1957 struct ipmi_softc sc;
1958 struct ipmi_attach_args *ia = aux;
1959 int rv = 0;
1960
1961 memset(&sc, 0, sizeof(sc));
1962
1963 /* Map registers */
1964 if (ipmi_map_regs(&sc, ia) != 0)
1965 return 0;
1966
1967 sc.sc_if->probe(&sc);
1968
1969 mutex_init(&sc.sc_cmd_mtx, MUTEX_DEFAULT, IPL_SOFTCLOCK);
1970 cv_init(&sc.sc_cmd_sleep, "ipmimtch");
1971
1972 if (ipmi_get_device_id(&sc, NULL) == 0)
1973 rv = 1;
1974
1975 cv_destroy(&sc.sc_cmd_sleep);
1976 mutex_destroy(&sc.sc_cmd_mtx);
1977 ipmi_unmap_regs(&sc);
1978
1979 return rv;
1980 }
1981
1982 static void
ipmi_thread(void * cookie)1983 ipmi_thread(void *cookie)
1984 {
1985 device_t self = cookie;
1986 struct ipmi_softc *sc = device_private(self);
1987 struct ipmi_attach_args *ia = &sc->sc_ia;
1988 uint16_t rec;
1989 struct ipmi_sensor *ipmi_s;
1990 struct ipmi_device_id id;
1991 int i;
1992
1993 sc->sc_thread_running = true;
1994
1995 /* setup ticker */
1996 sc->sc_max_retries = hz * 90; /* 90 seconds max */
1997
1998 /* Map registers */
1999 ipmi_map_regs(sc, ia);
2000
2001 memset(&id, 0, sizeof(id));
2002 if (ipmi_get_device_id(sc, &id))
2003 aprint_error_dev(self, "Failed to re-query device ID\n");
2004
2005 /* Scan SDRs, add sensors to list */
2006 for (rec = 0; rec != 0xFFFF;)
2007 if (get_sdr(sc, rec, &rec))
2008 break;
2009
2010 /* allocate and fill sensor arrays */
2011 sc->sc_sensor = malloc(sizeof(sc->sc_sensor[0]) * sc->sc_nsensors,
2012 M_DEVBUF, M_WAITOK | M_ZERO);
2013
2014 sc->sc_envsys = sysmon_envsys_create();
2015 sc->sc_envsys->sme_cookie = sc;
2016 sc->sc_envsys->sme_get_limits = ipmi_get_limits;
2017 sc->sc_envsys->sme_set_limits = ipmi_set_limits;
2018
2019 i = 0;
2020 SLIST_FOREACH(ipmi_s, &ipmi_sensor_list, i_list) {
2021 ipmi_s->i_props = 0;
2022 ipmi_s->i_envnum = -1;
2023 sc->sc_sensor[i].units = ipmi_s->i_envtype;
2024 sc->sc_sensor[i].state = ENVSYS_SINVALID;
2025 sc->sc_sensor[i].flags |= ENVSYS_FHAS_ENTROPY;
2026 /*
2027 * Monitor threshold limits in the sensors.
2028 */
2029 switch (sc->sc_sensor[i].units) {
2030 case ENVSYS_STEMP:
2031 case ENVSYS_SVOLTS_DC:
2032 case ENVSYS_SFANRPM:
2033 sc->sc_sensor[i].flags |= ENVSYS_FMONLIMITS;
2034 break;
2035 default:
2036 sc->sc_sensor[i].flags |= ENVSYS_FMONCRITICAL;
2037 }
2038 (void)strlcpy(sc->sc_sensor[i].desc, ipmi_s->i_envdesc,
2039 sizeof(sc->sc_sensor[i].desc));
2040 ++i;
2041
2042 if (sysmon_envsys_sensor_attach(sc->sc_envsys,
2043 &sc->sc_sensor[i-1]))
2044 continue;
2045
2046 /* get reference number from envsys */
2047 ipmi_s->i_envnum = sc->sc_sensor[i-1].sensor;
2048 }
2049
2050 sc->sc_envsys->sme_name = device_xname(sc->sc_dev);
2051 sc->sc_envsys->sme_flags = SME_DISABLE_REFRESH;
2052
2053 if (sysmon_envsys_register(sc->sc_envsys)) {
2054 aprint_error_dev(self, "unable to register with sysmon\n");
2055 sysmon_envsys_destroy(sc->sc_envsys);
2056 sc->sc_envsys = NULL;
2057 }
2058
2059 /* initialize sensor list for thread */
2060 if (!SLIST_EMPTY(&ipmi_sensor_list))
2061 sc->current_sensor = SLIST_FIRST(&ipmi_sensor_list);
2062
2063 aprint_verbose_dev(self, "version %d.%d interface %s %sbase "
2064 "0x%" PRIx64 "/%#x spacing %d\n",
2065 ia->iaa_if_rev >> 4, ia->iaa_if_rev & 0xF, sc->sc_if->name,
2066 ia->iaa_if_iotype == 'i' ? "io" : "mem",
2067 (uint64_t)ia->iaa_if_iobase,
2068 ia->iaa_if_iospacing * sc->sc_if->nregs, ia->iaa_if_iospacing);
2069 if (ia->iaa_if_irq != -1)
2070 aprint_verbose_dev(self, " irq %d\n", ia->iaa_if_irq);
2071
2072 if (id.deviceid != 0) {
2073 aprint_normal_dev(self, "ID %u.%u IPMI %x.%x%s%s\n",
2074 id.deviceid, (id.revision & 0xf),
2075 (id.version & 0xf), (id.version >> 4) & 0xf,
2076 (id.fwrev1 & 0x80) ? " Initializing" : " Available",
2077 (id.revision & 0x80) ? " +SDRs" : "");
2078 if (id.additional != 0)
2079 aprint_verbose_dev(self, "Additional%s%s%s%s%s%s%s%s\n",
2080 (id.additional & 0x80) ? " Chassis" : "",
2081 (id.additional & 0x40) ? " Bridge" : "",
2082 (id.additional & 0x20) ? " IPMBGen" : "",
2083 (id.additional & 0x10) ? " IPMBRcv" : "",
2084 (id.additional & 0x08) ? " FRU" : "",
2085 (id.additional & 0x04) ? " SEL" : "",
2086 (id.additional & 0x02) ? " SDR" : "",
2087 (id.additional & 0x01) ? " Sensor" : "");
2088 aprint_verbose_dev(self, "Manufacturer %05x Product %04x\n",
2089 (id.manufacturer[2] & 0xf) << 16
2090 | id.manufacturer[1] << 8
2091 | id.manufacturer[0],
2092 id.product[1] << 8
2093 | id.manufacturer[0]);
2094 aprint_verbose_dev(self, "Firmware %u.%x\n",
2095 (id.fwrev1 & 0x7f), id.fwrev2);
2096 }
2097
2098 /* setup flag to exclude iic */
2099 ipmi_enabled = 1;
2100
2101 /* Setup Watchdog timer */
2102 sc->sc_wdog.smw_name = device_xname(sc->sc_dev);
2103 sc->sc_wdog.smw_cookie = sc;
2104 sc->sc_wdog.smw_setmode = ipmi_watchdog_setmode;
2105 sc->sc_wdog.smw_tickle = ipmi_watchdog_tickle;
2106 sysmon_wdog_register(&sc->sc_wdog);
2107
2108 /* Set up a power handler so we can possibly sleep */
2109 if (!pmf_device_register(self, ipmi_suspend, NULL))
2110 aprint_error_dev(self, "couldn't establish a power handler\n");
2111
2112 config_pending_decr(self);
2113
2114 mutex_enter(&sc->sc_poll_mtx);
2115 while (sc->sc_thread_running) {
2116 while (sc->sc_mode == IPMI_MODE_COMMAND)
2117 cv_wait(&sc->sc_mode_cv, &sc->sc_poll_mtx);
2118 sc->sc_mode = IPMI_MODE_ENVSYS;
2119
2120 if (sc->sc_tickle_due) {
2121 ipmi_dotickle(sc);
2122 sc->sc_tickle_due = false;
2123 }
2124 ipmi_refresh_sensors(sc);
2125
2126 sc->sc_mode = IPMI_MODE_IDLE;
2127 cv_broadcast(&sc->sc_mode_cv);
2128 cv_timedwait(&sc->sc_poll_cv, &sc->sc_poll_mtx,
2129 SENSOR_REFRESH_RATE);
2130 }
2131 mutex_exit(&sc->sc_poll_mtx);
2132 kthread_exit(0);
2133 }
2134
2135 static void
ipmi_attach(device_t parent,device_t self,void * aux)2136 ipmi_attach(device_t parent, device_t self, void *aux)
2137 {
2138 struct ipmi_softc *sc = device_private(self);
2139
2140 sc->sc_ia = *(struct ipmi_attach_args *)aux;
2141 sc->sc_dev = self;
2142 aprint_naive("\n");
2143 aprint_normal("\n");
2144
2145 /* lock around read_sensor so that no one messes with the bmc regs */
2146 mutex_init(&sc->sc_cmd_mtx, MUTEX_DEFAULT, IPL_SOFTCLOCK);
2147 mutex_init(&sc->sc_sleep_mtx, MUTEX_DEFAULT, IPL_SOFTCLOCK);
2148 cv_init(&sc->sc_cmd_sleep, "ipmicmd");
2149
2150 mutex_init(&sc->sc_poll_mtx, MUTEX_DEFAULT, IPL_SOFTCLOCK);
2151 cv_init(&sc->sc_poll_cv, "ipmipoll");
2152 cv_init(&sc->sc_mode_cv, "ipmimode");
2153
2154 if (kthread_create(PRI_NONE, KTHREAD_MUSTJOIN, NULL, ipmi_thread, self,
2155 &sc->sc_kthread, "%s", device_xname(self)) != 0) {
2156 aprint_error_dev(self, "unable to create thread, disabled\n");
2157 } else
2158 config_pending_incr(self);
2159 }
2160
2161 static int
ipmi_detach(device_t self,int flags)2162 ipmi_detach(device_t self, int flags)
2163 {
2164 struct ipmi_sensor *i;
2165 int rc;
2166 struct ipmi_softc *sc = device_private(self);
2167
2168 mutex_enter(&sc->sc_poll_mtx);
2169 sc->sc_thread_running = false;
2170 cv_signal(&sc->sc_poll_cv);
2171 mutex_exit(&sc->sc_poll_mtx);
2172 if (sc->sc_kthread)
2173 (void)kthread_join(sc->sc_kthread);
2174
2175 if ((rc = sysmon_wdog_unregister(&sc->sc_wdog)) != 0) {
2176 if (rc == ERESTART)
2177 rc = EINTR;
2178 return rc;
2179 }
2180
2181 /* cancel any pending countdown */
2182 sc->sc_wdog.smw_mode &= ~WDOG_MODE_MASK;
2183 sc->sc_wdog.smw_mode |= WDOG_MODE_DISARMED;
2184 sc->sc_wdog.smw_period = WDOG_PERIOD_DEFAULT;
2185
2186 if ((rc = ipmi_watchdog_setmode(&sc->sc_wdog)) != 0)
2187 return rc;
2188
2189 ipmi_enabled = 0;
2190
2191 if (sc->sc_envsys != NULL) {
2192 /* _unregister also destroys */
2193 sysmon_envsys_unregister(sc->sc_envsys);
2194 sc->sc_envsys = NULL;
2195 }
2196
2197 while ((i = SLIST_FIRST(&ipmi_sensor_list)) != NULL) {
2198 SLIST_REMOVE_HEAD(&ipmi_sensor_list, i_list);
2199 free(i, M_DEVBUF);
2200 }
2201
2202 if (sc->sc_sensor != NULL) {
2203 free(sc->sc_sensor, M_DEVBUF);
2204 sc->sc_sensor = NULL;
2205 }
2206
2207 ipmi_unmap_regs(sc);
2208
2209 cv_destroy(&sc->sc_mode_cv);
2210 cv_destroy(&sc->sc_poll_cv);
2211 mutex_destroy(&sc->sc_poll_mtx);
2212 cv_destroy(&sc->sc_cmd_sleep);
2213 mutex_destroy(&sc->sc_sleep_mtx);
2214 mutex_destroy(&sc->sc_cmd_mtx);
2215
2216 return 0;
2217 }
2218
2219 static int
ipmi_get_device_id(struct ipmi_softc * sc,struct ipmi_device_id * res)2220 ipmi_get_device_id(struct ipmi_softc *sc, struct ipmi_device_id *res)
2221 {
2222 uint8_t buf[32];
2223 int len;
2224 int rc;
2225
2226 mutex_enter(&sc->sc_cmd_mtx);
2227 /* Identify BMC device early to detect lying bios */
2228 rc = ipmi_sendcmd(sc, BMC_SA, 0, APP_NETFN, APP_GET_DEVICE_ID, 0, NULL);
2229 if (rc) {
2230 dbg_printf(1, ": unable to send get device id "
2231 "command\n");
2232 goto done;
2233 }
2234 rc = ipmi_recvcmd(sc, sizeof(buf), &len, buf);
2235 if (rc) {
2236 dbg_printf(1, ": unable to retrieve device id\n");
2237 }
2238 done:
2239 mutex_exit(&sc->sc_cmd_mtx);
2240
2241 if (rc == 0 && res != NULL)
2242 memcpy(res, buf, MIN(sizeof(*res), len));
2243
2244 return rc;
2245 }
2246
2247 static int
ipmi_watchdog_setmode(struct sysmon_wdog * smwdog)2248 ipmi_watchdog_setmode(struct sysmon_wdog *smwdog)
2249 {
2250 struct ipmi_softc *sc = smwdog->smw_cookie;
2251 struct ipmi_get_watchdog gwdog;
2252 struct ipmi_set_watchdog swdog;
2253 int rc, len;
2254
2255 if (smwdog->smw_period < 10)
2256 return EINVAL;
2257 if (smwdog->smw_period == WDOG_PERIOD_DEFAULT)
2258 sc->sc_wdog.smw_period = 10;
2259 else
2260 sc->sc_wdog.smw_period = smwdog->smw_period;
2261
2262 mutex_enter(&sc->sc_cmd_mtx);
2263 /* see if we can properly task to the watchdog */
2264 rc = ipmi_sendcmd(sc, BMC_SA, BMC_LUN, APP_NETFN,
2265 APP_GET_WATCHDOG_TIMER, 0, NULL);
2266 rc = ipmi_recvcmd(sc, sizeof(gwdog), &len, &gwdog);
2267 mutex_exit(&sc->sc_cmd_mtx);
2268 if (rc) {
2269 aprint_error_dev(sc->sc_dev,
2270 "APP_GET_WATCHDOG_TIMER returned %#x\n", rc);
2271 return EIO;
2272 }
2273
2274 memset(&swdog, 0, sizeof(swdog));
2275 /* Period is 10ths/sec */
2276 swdog.wdog_timeout = htole16(sc->sc_wdog.smw_period * 10);
2277 if ((smwdog->smw_mode & WDOG_MODE_MASK) == WDOG_MODE_DISARMED)
2278 swdog.wdog_action = IPMI_WDOG_ACT_DISABLED;
2279 else
2280 swdog.wdog_action = IPMI_WDOG_ACT_RESET;
2281 swdog.wdog_use = IPMI_WDOG_USE_USE_OS;
2282
2283 mutex_enter(&sc->sc_cmd_mtx);
2284 if ((rc = ipmi_sendcmd(sc, BMC_SA, BMC_LUN, APP_NETFN,
2285 APP_SET_WATCHDOG_TIMER, sizeof(swdog), &swdog)) == 0)
2286 rc = ipmi_recvcmd(sc, 0, &len, NULL);
2287 mutex_exit(&sc->sc_cmd_mtx);
2288 if (rc) {
2289 aprint_error_dev(sc->sc_dev,
2290 "APP_SET_WATCHDOG_TIMER returned %#x\n", rc);
2291 return EIO;
2292 }
2293
2294 return 0;
2295 }
2296
2297 static int
ipmi_watchdog_tickle(struct sysmon_wdog * smwdog)2298 ipmi_watchdog_tickle(struct sysmon_wdog *smwdog)
2299 {
2300 struct ipmi_softc *sc = smwdog->smw_cookie;
2301
2302 mutex_enter(&sc->sc_poll_mtx);
2303 sc->sc_tickle_due = true;
2304 cv_signal(&sc->sc_poll_cv);
2305 mutex_exit(&sc->sc_poll_mtx);
2306 return 0;
2307 }
2308
2309 static void
ipmi_dotickle(struct ipmi_softc * sc)2310 ipmi_dotickle(struct ipmi_softc *sc)
2311 {
2312 int rc, len;
2313
2314 mutex_enter(&sc->sc_cmd_mtx);
2315 /* tickle the watchdog */
2316 if ((rc = ipmi_sendcmd(sc, BMC_SA, BMC_LUN, APP_NETFN,
2317 APP_RESET_WATCHDOG, 0, NULL)) == 0)
2318 rc = ipmi_recvcmd(sc, 0, &len, NULL);
2319 mutex_exit(&sc->sc_cmd_mtx);
2320 if (rc != 0) {
2321 aprint_error_dev(sc->sc_dev, "watchdog tickle returned %#x\n",
2322 rc);
2323 }
2324 }
2325
2326 static bool
ipmi_suspend(device_t dev,const pmf_qual_t * qual)2327 ipmi_suspend(device_t dev, const pmf_qual_t *qual)
2328 {
2329 struct ipmi_softc *sc = device_private(dev);
2330
2331 /* Don't allow suspend if watchdog is armed */
2332 if ((sc->sc_wdog.smw_mode & WDOG_MODE_MASK) != WDOG_MODE_DISARMED)
2333 return false;
2334 return true;
2335 }
2336
2337 static int
ipmi_open(dev_t dev,int flag,int fmt,lwp_t * l)2338 ipmi_open(dev_t dev, int flag, int fmt, lwp_t *l)
2339 {
2340 struct ipmi_softc *sc;
2341 int unit;
2342
2343 unit = IPMIUNIT(dev);
2344 if ((sc = device_lookup_private(&ipmi_cd, unit)) == NULL)
2345 return (ENXIO);
2346
2347 return 0;
2348 }
2349
2350 static int
ipmi_close(dev_t dev,int flag,int fmt,lwp_t * l)2351 ipmi_close(dev_t dev, int flag, int fmt, lwp_t *l)
2352 {
2353 struct ipmi_softc *sc;
2354 int unit;
2355
2356 unit = IPMIUNIT(dev);
2357 if ((sc = device_lookup_private(&ipmi_cd, unit)) == NULL)
2358 return (ENXIO);
2359
2360 mutex_enter(&sc->sc_poll_mtx);
2361 if (sc->sc_mode == IPMI_MODE_COMMAND) {
2362 sc->sc_mode = IPMI_MODE_IDLE;
2363 cv_broadcast(&sc->sc_mode_cv);
2364 }
2365 mutex_exit(&sc->sc_poll_mtx);
2366 return 0;
2367 }
2368
2369 static int
ipmi_ioctl(dev_t dev,u_long cmd,void * data,int flag,lwp_t * l)2370 ipmi_ioctl(dev_t dev, u_long cmd, void *data, int flag, lwp_t *l)
2371 {
2372 struct ipmi_softc *sc;
2373 int unit, error = 0, len;
2374 struct ipmi_req *req;
2375 struct ipmi_recv *recv;
2376 struct ipmi_addr addr;
2377 unsigned char ccode, *buf = NULL;
2378
2379 unit = IPMIUNIT(dev);
2380 if ((sc = device_lookup_private(&ipmi_cd, unit)) == NULL)
2381 return (ENXIO);
2382
2383 switch (cmd) {
2384 case IPMICTL_SEND_COMMAND:
2385 mutex_enter(&sc->sc_poll_mtx);
2386 while (sc->sc_mode == IPMI_MODE_ENVSYS) {
2387 error = cv_wait_sig(&sc->sc_mode_cv, &sc->sc_poll_mtx);
2388 if (error == EINTR) {
2389 mutex_exit(&sc->sc_poll_mtx);
2390 return error;
2391 }
2392 }
2393 sc->sc_mode = IPMI_MODE_COMMAND;
2394 mutex_exit(&sc->sc_poll_mtx);
2395 break;
2396 }
2397
2398 mutex_enter(&sc->sc_cmd_mtx);
2399
2400 switch (cmd) {
2401 case IPMICTL_SEND_COMMAND:
2402 req = data;
2403 buf = malloc(IPMI_MAX_RX, M_DEVBUF, M_WAITOK);
2404
2405 len = req->msg.data_len;
2406 if (len < 0 || len > IPMI_MAX_RX) {
2407 error = EINVAL;
2408 break;
2409 }
2410
2411 /* clear pending result */
2412 if (sc->sc_sent)
2413 (void)ipmi_recvcmd(sc, IPMI_MAX_RX, &len, buf);
2414
2415 /* XXX */
2416 error = copyin(req->addr, &addr, sizeof(addr));
2417 if (error)
2418 break;
2419
2420 error = copyin(req->msg.data, buf, len);
2421 if (error)
2422 break;
2423
2424 /* save for receive */
2425 sc->sc_msgid = req->msgid;
2426 sc->sc_netfn = req->msg.netfn;
2427 sc->sc_cmd = req->msg.cmd;
2428
2429 if (ipmi_sendcmd(sc, BMC_SA, 0, req->msg.netfn,
2430 req->msg.cmd, len, buf)) {
2431 error = EIO;
2432 break;
2433 }
2434 sc->sc_sent = true;
2435 break;
2436 case IPMICTL_RECEIVE_MSG_TRUNC:
2437 case IPMICTL_RECEIVE_MSG:
2438 recv = data;
2439 buf = malloc(IPMI_MAX_RX, M_DEVBUF, M_WAITOK);
2440
2441 if (recv->msg.data_len < 1) {
2442 error = EINVAL;
2443 break;
2444 }
2445
2446 /* XXX */
2447 error = copyin(recv->addr, &addr, sizeof(addr));
2448 if (error)
2449 break;
2450
2451
2452 if (!sc->sc_sent) {
2453 error = EIO;
2454 break;
2455 }
2456
2457 len = 0;
2458 error = ipmi_recvcmd(sc, IPMI_MAX_RX, &len, buf);
2459 if (error < 0) {
2460 error = EIO;
2461 break;
2462 }
2463 ccode = (unsigned char)error;
2464 sc->sc_sent = false;
2465
2466 if (len > recv->msg.data_len - 1) {
2467 if (cmd == IPMICTL_RECEIVE_MSG) {
2468 error = EMSGSIZE;
2469 break;
2470 }
2471 len = recv->msg.data_len - 1;
2472 }
2473
2474 addr.channel = IPMI_BMC_CHANNEL;
2475
2476 recv->recv_type = IPMI_RESPONSE_RECV_TYPE;
2477 recv->msgid = sc->sc_msgid;
2478 recv->msg.netfn = sc->sc_netfn;
2479 recv->msg.cmd = sc->sc_cmd;
2480 recv->msg.data_len = len+1;
2481
2482 error = copyout(&addr, recv->addr, sizeof(addr));
2483 if (error == 0)
2484 error = copyout(&ccode, recv->msg.data, 1);
2485 if (error == 0)
2486 error = copyout(buf, recv->msg.data+1, len);
2487 break;
2488 case IPMICTL_SET_MY_ADDRESS_CMD:
2489 sc->sc_address = *(int *)data;
2490 break;
2491 case IPMICTL_GET_MY_ADDRESS_CMD:
2492 *(int *)data = sc->sc_address;
2493 break;
2494 case IPMICTL_SET_MY_LUN_CMD:
2495 sc->sc_lun = *(int *)data & 0x3;
2496 break;
2497 case IPMICTL_GET_MY_LUN_CMD:
2498 *(int *)data = sc->sc_lun;
2499 break;
2500 case IPMICTL_SET_GETS_EVENTS_CMD:
2501 break;
2502 case IPMICTL_REGISTER_FOR_CMD:
2503 case IPMICTL_UNREGISTER_FOR_CMD:
2504 error = EOPNOTSUPP;
2505 break;
2506 default:
2507 error = ENODEV;
2508 break;
2509 }
2510
2511 if (buf)
2512 free(buf, M_DEVBUF);
2513
2514 mutex_exit(&sc->sc_cmd_mtx);
2515
2516 switch (cmd) {
2517 case IPMICTL_RECEIVE_MSG:
2518 case IPMICTL_RECEIVE_MSG_TRUNC:
2519 mutex_enter(&sc->sc_poll_mtx);
2520 sc->sc_mode = IPMI_MODE_IDLE;
2521 cv_broadcast(&sc->sc_mode_cv);
2522 mutex_exit(&sc->sc_poll_mtx);
2523 break;
2524 }
2525
2526 return error;
2527 }
2528
2529 static int
ipmi_poll(dev_t dev,int events,lwp_t * l)2530 ipmi_poll(dev_t dev, int events, lwp_t *l)
2531 {
2532 struct ipmi_softc *sc;
2533 int unit, revents = 0;
2534
2535 unit = IPMIUNIT(dev);
2536 if ((sc = device_lookup_private(&ipmi_cd, unit)) == NULL)
2537 return (ENXIO);
2538
2539 mutex_enter(&sc->sc_cmd_mtx);
2540 if (events & (POLLIN | POLLRDNORM)) {
2541 if (sc->sc_sent)
2542 revents |= events & (POLLIN | POLLRDNORM);
2543 }
2544 mutex_exit(&sc->sc_cmd_mtx);
2545
2546 return revents;
2547 }
2548