xref: /freebsd/sys/dev/sfxge/common/mcdi_mon.c (revision 911f0260390e18cf85f3dbf2c719b593efdc1e3c)
1 /*-
2  * Copyright (c) 2009-2016 Solarflare Communications Inc.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions are met:
7  *
8  * 1. Redistributions of source code must retain the above copyright notice,
9  *    this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright notice,
11  *    this list of conditions and the following disclaimer in the documentation
12  *    and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
15  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
16  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
18  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
21  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
22  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
23  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
24  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25  *
26  * The views and conclusions contained in the software and documentation are
27  * those of the authors and should not be interpreted as representing official
28  * policies, either expressed or implied, of the FreeBSD Project.
29  */
30 
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
33 
34 #include "efx.h"
35 #include "efx_impl.h"
36 #include "mcdi_mon.h"
37 
38 #if EFSYS_OPT_MON_MCDI
39 
40 #if EFSYS_OPT_MON_STATS
41 
42 /* Get port mask from one-based MCDI port number */
43 #define	MCDI_MON_PORT_MASK(_emip) (1U << ((_emip)->emi_port - 1))
44 
45 #define	MCDI_STATIC_SENSOR_ASSERT(_field)				\
46 	EFX_STATIC_ASSERT(MC_CMD_SENSOR_STATE_ ## _field		\
47 			    == EFX_MON_STAT_STATE_ ## _field)
48 
49 static						void
50 mcdi_mon_decode_stats(
51 	__in					efx_nic_t *enp,
52 	__in_bcount(sensor_mask_size)		uint32_t *sensor_mask,
53 	__in					size_t sensor_mask_size,
54 	__in_opt				efsys_mem_t *esmp,
55 	__out_bcount_opt(sensor_mask_size)	uint32_t *stat_maskp,
56 	__inout_ecount_opt(EFX_MON_NSTATS)	efx_mon_stat_value_t *stat)
57 {
58 	efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip);
59 	efx_mon_stat_portmask_t port_mask;
60 	uint16_t sensor;
61 	size_t sensor_max;
62 	uint32_t stat_mask[(EFX_MON_NSTATS + 31) / 32];
63 	uint32_t idx = 0;
64 	uint32_t page = 0;
65 
66 	/* Assert the MC_CMD_SENSOR and EFX_MON_STATE namespaces agree */
67 	MCDI_STATIC_SENSOR_ASSERT(OK);
68 	MCDI_STATIC_SENSOR_ASSERT(WARNING);
69 	MCDI_STATIC_SENSOR_ASSERT(FATAL);
70 	MCDI_STATIC_SENSOR_ASSERT(BROKEN);
71 	MCDI_STATIC_SENSOR_ASSERT(NO_READING);
72 
73 	sensor_max = 8 * sensor_mask_size;
74 
75 	EFSYS_ASSERT(emip->emi_port > 0); /* MCDI port number is one-based */
76 	port_mask = (efx_mon_stat_portmask_t)MCDI_MON_PORT_MASK(emip);
77 
78 	memset(stat_mask, 0, sizeof (stat_mask));
79 
80 	/*
81 	 * The MCDI sensor readings in the DMA buffer are a packed array of
82 	 * MC_CMD_SENSOR_VALUE_ENTRY structures, which only includes entries for
83 	 * supported sensors (bit set in sensor_mask). The sensor_mask and
84 	 * sensor readings do not include entries for the per-page NEXT_PAGE
85 	 * flag.
86 	 *
87 	 * sensor_mask may legitimately contain MCDI sensors that the driver
88 	 * does not understand.
89 	 */
90 	for (sensor = 0; sensor < sensor_max; ++sensor) {
91 		efx_mon_stat_t id;
92 		efx_mon_stat_portmask_t stat_portmask = 0;
93 		boolean_t decode_ok;
94 		efx_mon_stat_unit_t stat_unit;
95 
96 		if ((sensor % (MC_CMD_SENSOR_PAGE0_NEXT + 1)) ==
97 		    MC_CMD_SENSOR_PAGE0_NEXT) {
98 			page++;
99 			continue;
100 			/* This sensor is one of the page boundary bits. */
101 		}
102 
103 		if (~(sensor_mask[page]) & (1U << sensor))
104 			continue;
105 		/* This sensor not in DMA buffer */
106 
107 		idx++;
108 		/*
109 		 * Valid stat in DMA buffer that we need to increment over, even
110 		 * if we couldn't look up the id
111 		 */
112 
113 		decode_ok = efx_mon_mcdi_to_efx_stat(sensor, &id);
114 		decode_ok =
115 		    decode_ok && efx_mon_get_stat_portmap(id, &stat_portmask);
116 
117 		if (!(decode_ok && (stat_portmask & port_mask)))
118 			continue;
119 		/* Either bad decode, or don't know what port stat is on */
120 
121 		EFSYS_ASSERT(id < EFX_MON_NSTATS);
122 
123 		/*
124 		 * stat_mask is a bitmask indexed by EFX_MON_* monitor statistic
125 		 * identifiers from efx_mon_stat_t (without NEXT_PAGE bits).
126 		 *
127 		 * If there is an entry in the MCDI sensor to monitor statistic
128 		 * map then the sensor reading is used for the value of the
129 		 * monitor statistic.
130 		 */
131 		stat_mask[id / EFX_MON_MASK_ELEMENT_SIZE] |=
132 		    (1U << (id % EFX_MON_MASK_ELEMENT_SIZE));
133 
134 		if (stat != NULL && esmp != NULL && !EFSYS_MEM_IS_NULL(esmp)) {
135 			efx_dword_t dword;
136 
137 			/* Get MCDI sensor reading from DMA buffer */
138 			EFSYS_MEM_READD(esmp, 4 * (idx - 1), &dword);
139 
140 			/* Update EFX monitor stat from MCDI sensor reading */
141 			stat[id].emsv_value = (uint16_t)EFX_DWORD_FIELD(dword,
142 			    MC_CMD_SENSOR_VALUE_ENTRY_TYPEDEF_VALUE);
143 
144 			stat[id].emsv_state = (uint16_t)EFX_DWORD_FIELD(dword,
145 			    MC_CMD_SENSOR_VALUE_ENTRY_TYPEDEF_STATE);
146 
147 			stat[id].emsv_unit =
148 			    efx_mon_get_stat_unit(id, &stat_unit) ?
149 			    stat_unit : EFX_MON_STAT_UNIT_UNKNOWN;
150 		}
151 	}
152 
153 	if (stat_maskp != NULL) {
154 		memcpy(stat_maskp, stat_mask, sizeof (stat_mask));
155 	}
156 }
157 
158 	__checkReturn			efx_rc_t
159 mcdi_mon_ev(
160 	__in				efx_nic_t *enp,
161 	__in				efx_qword_t *eqp,
162 	__out				efx_mon_stat_t *idp,
163 	__out				efx_mon_stat_value_t *valuep)
164 {
165 	efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip);
166 	efx_mon_stat_portmask_t port_mask, sensor_port_mask;
167 	uint16_t sensor;
168 	uint16_t state;
169 	uint16_t value;
170 	efx_mon_stat_t id;
171 	efx_rc_t rc;
172 
173 	EFSYS_ASSERT(emip->emi_port > 0); /* MCDI port number is one-based */
174 	port_mask = MCDI_MON_PORT_MASK(emip);
175 
176 	sensor = (uint16_t)MCDI_EV_FIELD(eqp, SENSOREVT_MONITOR);
177 	state = (uint16_t)MCDI_EV_FIELD(eqp, SENSOREVT_STATE);
178 	value = (uint16_t)MCDI_EV_FIELD(eqp, SENSOREVT_VALUE);
179 
180 	/* Hardware must support this MCDI sensor */
181 	EFSYS_ASSERT3U(sensor, <,
182 	    (8 * enp->en_nic_cfg.enc_mcdi_sensor_mask_size));
183 	EFSYS_ASSERT((sensor % (MC_CMD_SENSOR_PAGE0_NEXT + 1)) !=
184 	    MC_CMD_SENSOR_PAGE0_NEXT);
185 	EFSYS_ASSERT(enp->en_nic_cfg.enc_mcdi_sensor_maskp != NULL);
186 	EFSYS_ASSERT((enp->en_nic_cfg.enc_mcdi_sensor_maskp[
187 		    sensor / (MC_CMD_SENSOR_PAGE0_NEXT + 1)] &
188 		(1U << (sensor % (MC_CMD_SENSOR_PAGE0_NEXT + 1)))) != 0);
189 
190 	/* And we need to understand it, to get port-map */
191 	if (!efx_mon_mcdi_to_efx_stat(sensor, &id)) {
192 		rc = ENOTSUP;
193 		goto fail1;
194 	}
195 	if (!(efx_mon_get_stat_portmap(id, &sensor_port_mask) &&
196 		(port_mask && sensor_port_mask))) {
197 		return (ENODEV);
198 	}
199 	EFSYS_ASSERT(id < EFX_MON_NSTATS);
200 
201 	*idp = id;
202 	valuep->emsv_value = value;
203 	valuep->emsv_state = state;
204 
205 	return (0);
206 
207 fail1:
208 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
209 
210 	return (rc);
211 }
212 
213 static	__checkReturn	efx_rc_t
214 efx_mcdi_read_sensors(
215 	__in		efx_nic_t *enp,
216 	__in		efsys_mem_t *esmp,
217 	__in		uint32_t size)
218 {
219 	efx_mcdi_req_t req;
220 	EFX_MCDI_DECLARE_BUF(payload, MC_CMD_READ_SENSORS_EXT_IN_LEN,
221 		MC_CMD_READ_SENSORS_EXT_OUT_LEN);
222 	uint32_t addr_lo, addr_hi;
223 	efx_rc_t rc;
224 
225 	if (EFSYS_MEM_SIZE(esmp) < size) {
226 		rc = EINVAL;
227 		goto fail1;
228 	}
229 
230 	req.emr_cmd = MC_CMD_READ_SENSORS;
231 	req.emr_in_buf = payload;
232 	req.emr_in_length = MC_CMD_READ_SENSORS_EXT_IN_LEN;
233 	req.emr_out_buf = payload;
234 	req.emr_out_length = MC_CMD_READ_SENSORS_EXT_OUT_LEN;
235 
236 	addr_lo = (uint32_t)(EFSYS_MEM_ADDR(esmp) & 0xffffffff);
237 	addr_hi = (uint32_t)(EFSYS_MEM_ADDR(esmp) >> 32);
238 
239 	MCDI_IN_SET_DWORD(req, READ_SENSORS_EXT_IN_DMA_ADDR_LO, addr_lo);
240 	MCDI_IN_SET_DWORD(req, READ_SENSORS_EXT_IN_DMA_ADDR_HI, addr_hi);
241 	MCDI_IN_SET_DWORD(req, READ_SENSORS_EXT_IN_LENGTH, size);
242 
243 	efx_mcdi_execute(enp, &req);
244 
245 	return (req.emr_rc);
246 
247 fail1:
248 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
249 
250 	return (rc);
251 }
252 
253 static	__checkReturn	efx_rc_t
254 efx_mcdi_sensor_info_npages(
255 	__in		efx_nic_t *enp,
256 	__out		uint32_t *npagesp)
257 {
258 	efx_mcdi_req_t req;
259 	EFX_MCDI_DECLARE_BUF(payload, MC_CMD_SENSOR_INFO_EXT_IN_LEN,
260 		MC_CMD_SENSOR_INFO_OUT_LENMAX);
261 	int page;
262 	efx_rc_t rc;
263 
264 	EFSYS_ASSERT(npagesp != NULL);
265 
266 	page = 0;
267 	do {
268 		(void) memset(payload, 0, sizeof (payload));
269 		req.emr_cmd = MC_CMD_SENSOR_INFO;
270 		req.emr_in_buf = payload;
271 		req.emr_in_length = MC_CMD_SENSOR_INFO_EXT_IN_LEN;
272 		req.emr_out_buf = payload;
273 		req.emr_out_length = MC_CMD_SENSOR_INFO_OUT_LENMAX;
274 
275 		MCDI_IN_SET_DWORD(req, SENSOR_INFO_EXT_IN_PAGE, page++);
276 
277 		efx_mcdi_execute_quiet(enp, &req);
278 
279 		if (req.emr_rc != 0) {
280 			rc = req.emr_rc;
281 			goto fail1;
282 		}
283 	} while (MCDI_OUT_DWORD(req, SENSOR_INFO_OUT_MASK) &
284 	    (1U << MC_CMD_SENSOR_PAGE0_NEXT));
285 
286 	*npagesp = page;
287 
288 	return (0);
289 
290 fail1:
291 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
292 
293 	return (rc);
294 }
295 
296 static	__checkReturn		efx_rc_t
297 efx_mcdi_sensor_info(
298 	__in			efx_nic_t *enp,
299 	__out_ecount(npages)	uint32_t *sensor_maskp,
300 	__in			size_t npages)
301 {
302 	efx_mcdi_req_t req;
303 	EFX_MCDI_DECLARE_BUF(payload, MC_CMD_SENSOR_INFO_EXT_IN_LEN,
304 		MC_CMD_SENSOR_INFO_OUT_LENMAX);
305 	uint32_t page;
306 	efx_rc_t rc;
307 
308 	EFSYS_ASSERT(sensor_maskp != NULL);
309 
310 	if (npages < 1) {
311 		rc = EINVAL;
312 		goto fail1;
313 	}
314 
315 	for (page = 0; page < npages; page++) {
316 		uint32_t mask;
317 
318 		(void) memset(payload, 0, sizeof (payload));
319 		req.emr_cmd = MC_CMD_SENSOR_INFO;
320 		req.emr_in_buf = payload;
321 		req.emr_in_length = MC_CMD_SENSOR_INFO_EXT_IN_LEN;
322 		req.emr_out_buf = payload;
323 		req.emr_out_length = MC_CMD_SENSOR_INFO_OUT_LENMAX;
324 
325 		MCDI_IN_SET_DWORD(req, SENSOR_INFO_EXT_IN_PAGE, page);
326 
327 		efx_mcdi_execute(enp, &req);
328 
329 		if (req.emr_rc != 0) {
330 			rc = req.emr_rc;
331 			goto fail2;
332 		}
333 
334 		mask = MCDI_OUT_DWORD(req, SENSOR_INFO_OUT_MASK);
335 
336 		if ((page != (npages - 1)) &&
337 		    ((mask & (1U << MC_CMD_SENSOR_PAGE0_NEXT)) == 0)) {
338 			rc = EINVAL;
339 			goto fail3;
340 		}
341 		sensor_maskp[page] = mask;
342 	}
343 
344 	if (sensor_maskp[npages - 1] & (1U << MC_CMD_SENSOR_PAGE0_NEXT)) {
345 		rc = EINVAL;
346 		goto fail4;
347 	}
348 
349 	return (0);
350 
351 fail4:
352 	EFSYS_PROBE(fail4);
353 fail3:
354 	EFSYS_PROBE(fail3);
355 fail2:
356 	EFSYS_PROBE(fail2);
357 fail1:
358 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
359 
360 	return (rc);
361 }
362 
363 static	__checkReturn		efx_rc_t
364 efx_mcdi_sensor_info_page(
365 	__in			efx_nic_t *enp,
366 	__in			uint32_t page,
367 	__out			uint32_t *mask_part,
368 	__out_ecount((sizeof (*mask_part) * 8) - 1)
369 				efx_mon_stat_limits_t *limits)
370 {
371 	efx_mcdi_req_t req;
372 	EFX_MCDI_DECLARE_BUF(payload, MC_CMD_SENSOR_INFO_EXT_IN_LEN,
373 		MC_CMD_SENSOR_INFO_OUT_LENMAX);
374 	efx_rc_t rc;
375 	uint32_t mask_copy;
376 	efx_dword_t *maskp;
377 	efx_qword_t *limit_info;
378 
379 	EFSYS_ASSERT(mask_part != NULL);
380 	EFSYS_ASSERT(limits != NULL);
381 
382 	memset(limits, 0,
383 	    ((sizeof (*mask_part) * 8) - 1) * sizeof (efx_mon_stat_limits_t));
384 
385 	req.emr_cmd = MC_CMD_SENSOR_INFO;
386 	req.emr_in_buf = payload;
387 	req.emr_in_length = MC_CMD_SENSOR_INFO_EXT_IN_LEN;
388 	req.emr_out_buf = payload;
389 	req.emr_out_length = MC_CMD_SENSOR_INFO_OUT_LENMAX;
390 
391 	MCDI_IN_SET_DWORD(req, SENSOR_INFO_EXT_IN_PAGE, page);
392 
393 	efx_mcdi_execute(enp, &req);
394 
395 	rc = req.emr_rc;
396 
397 	if (rc != 0)
398 		goto fail1;
399 
400 	EFSYS_ASSERT(sizeof (*limit_info) ==
401 	    MC_CMD_SENSOR_INFO_ENTRY_TYPEDEF_LEN);
402 	maskp = MCDI_OUT2(req, efx_dword_t, SENSOR_INFO_OUT_MASK);
403 	limit_info = (efx_qword_t *)(maskp + 1);
404 
405 	*mask_part = maskp->ed_u32[0];
406 	mask_copy = *mask_part;
407 
408 	/* Copy an entry for all but the highest bit set. */
409 	while (mask_copy) {
410 		if (mask_copy == (1U << MC_CMD_SENSOR_PAGE0_NEXT)) {
411 			/* Only next page bit set. */
412 			mask_copy = 0;
413 		} else {
414 			/* Clear lowest bit */
415 			mask_copy = mask_copy & ~(mask_copy ^ (mask_copy - 1));
416 			/* And copy out limit entry into buffer */
417 			limits->emlv_warning_min = EFX_QWORD_FIELD(*limit_info,
418 			    MC_CMD_SENSOR_INFO_ENTRY_TYPEDEF_MIN1);
419 
420 			limits->emlv_warning_max = EFX_QWORD_FIELD(*limit_info,
421 			    MC_CMD_SENSOR_INFO_ENTRY_TYPEDEF_MAX1);
422 
423 			limits->emlv_fatal_min = EFX_QWORD_FIELD(*limit_info,
424 			    MC_CMD_SENSOR_INFO_ENTRY_TYPEDEF_MIN2);
425 
426 			limits->emlv_fatal_max = EFX_QWORD_FIELD(*limit_info,
427 			    MC_CMD_SENSOR_INFO_ENTRY_TYPEDEF_MAX2);
428 
429 			limits++;
430 			limit_info++;
431 		}
432 	}
433 
434 	return (rc);
435 
436 fail1:
437 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
438 
439 	return (rc);
440 }
441 
442 	__checkReturn			efx_rc_t
443 mcdi_mon_stats_update(
444 	__in				efx_nic_t *enp,
445 	__in				efsys_mem_t *esmp,
446 	__inout_ecount(EFX_MON_NSTATS)	efx_mon_stat_value_t *values)
447 {
448 	efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
449 	uint32_t size = encp->enc_mon_stat_dma_buf_size;
450 	efx_rc_t rc;
451 
452 	if ((rc = efx_mcdi_read_sensors(enp, esmp, size)) != 0)
453 		goto fail1;
454 
455 	EFSYS_DMA_SYNC_FOR_KERNEL(esmp, 0, size);
456 
457 	mcdi_mon_decode_stats(enp,
458 	    encp->enc_mcdi_sensor_maskp,
459 	    encp->enc_mcdi_sensor_mask_size,
460 	    esmp, NULL, values);
461 
462 	return (0);
463 
464 fail1:
465 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
466 
467 	return (rc);
468 }
469 
470 static		void
471 lowest_set_bit(
472 	__in	uint32_t input_mask,
473 	__out	uint32_t *lowest_bit_mask,
474 	__out	uint32_t *lowest_bit_num
475 )
476 {
477 	uint32_t x;
478 	uint32_t set_bit, bit_index;
479 
480 	x = (input_mask ^ (input_mask - 1));
481 	set_bit = (x + 1) >> 1;
482 	if (!set_bit)
483 		set_bit = (1U << 31U);
484 
485 	bit_index = 0;
486 	if (set_bit & 0xFFFF0000)
487 		bit_index += 16;
488 	if (set_bit & 0xFF00FF00)
489 		bit_index += 8;
490 	if (set_bit & 0xF0F0F0F0)
491 		bit_index += 4;
492 	if (set_bit & 0xCCCCCCCC)
493 		bit_index += 2;
494 	if (set_bit & 0xAAAAAAAA)
495 		bit_index += 1;
496 
497 	*lowest_bit_mask = set_bit;
498 	*lowest_bit_num = bit_index;
499 }
500 
501 	__checkReturn			efx_rc_t
502 mcdi_mon_limits_update(
503 	__in				efx_nic_t *enp,
504 	__inout_ecount(EFX_MON_NSTATS)	efx_mon_stat_limits_t *values)
505 {
506 	efx_rc_t rc;
507 	uint32_t page;
508 	uint32_t page_mask;
509 	uint32_t limit_index;
510 	efx_mon_stat_limits_t limits[sizeof (page_mask) * 8];
511 	efx_mon_stat_t stat;
512 
513 	page = 0;
514 	page--;
515 	do {
516 		page++;
517 
518 		rc = efx_mcdi_sensor_info_page(enp, page, &page_mask, limits);
519 		if (rc != 0)
520 			goto fail1;
521 
522 		limit_index = 0;
523 		while (page_mask) {
524 			uint32_t set_bit;
525 			uint32_t page_index;
526 			uint32_t mcdi_index;
527 
528 			if (page_mask == (1U << MC_CMD_SENSOR_PAGE0_NEXT))
529 				break;
530 
531 			lowest_set_bit(page_mask, &set_bit, &page_index);
532 			page_mask = page_mask & ~set_bit;
533 
534 			mcdi_index =
535 			    page_index + (sizeof (page_mask) * 8 * page);
536 
537 			/*
538 			 * This can fail if MCDI reports newer stats than the
539 			 * drivers understand, or the bit is the next page bit.
540 			 *
541 			 * Driver needs to be tolerant of this.
542 			 */
543 			if (!efx_mon_mcdi_to_efx_stat(mcdi_index, &stat))
544 				continue;
545 
546 			values[stat] = limits[limit_index];
547 			limit_index++;
548 		}
549 
550 	} while (page_mask & (1U << MC_CMD_SENSOR_PAGE0_NEXT));
551 
552 	return (rc);
553 
554 fail1:
555 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
556 
557 	return (rc);
558 }
559 
560 	__checkReturn	efx_rc_t
561 mcdi_mon_cfg_build(
562 	__in		efx_nic_t *enp)
563 {
564 	efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
565 	uint32_t npages;
566 	efx_rc_t rc;
567 
568 	switch (enp->en_family) {
569 #if EFSYS_OPT_SIENA
570 	case EFX_FAMILY_SIENA:
571 		encp->enc_mon_type = EFX_MON_SFC90X0;
572 		break;
573 #endif
574 #if EFSYS_OPT_HUNTINGTON
575 	case EFX_FAMILY_HUNTINGTON:
576 		encp->enc_mon_type = EFX_MON_SFC91X0;
577 		break;
578 #endif
579 #if EFSYS_OPT_MEDFORD
580 	case EFX_FAMILY_MEDFORD:
581 		encp->enc_mon_type = EFX_MON_SFC92X0;
582 		break;
583 #endif
584 #if EFSYS_OPT_MEDFORD2
585 	case EFX_FAMILY_MEDFORD2:
586 		encp->enc_mon_type = EFX_MON_SFC92X0;
587 		break;
588 #endif
589 	default:
590 		rc = EINVAL;
591 		goto fail1;
592 	}
593 
594 	/* Get mc sensor mask size */
595 	npages = 0;
596 	if ((rc = efx_mcdi_sensor_info_npages(enp, &npages)) != 0)
597 		goto fail2;
598 
599 	encp->enc_mon_stat_dma_buf_size	= npages * EFX_MON_STATS_PAGE_SIZE;
600 	encp->enc_mcdi_sensor_mask_size = npages * sizeof (uint32_t);
601 
602 	/* Allocate mc sensor mask */
603 	EFSYS_KMEM_ALLOC(enp->en_esip,
604 	    encp->enc_mcdi_sensor_mask_size,
605 	    encp->enc_mcdi_sensor_maskp);
606 
607 	if (encp->enc_mcdi_sensor_maskp == NULL) {
608 		rc = ENOMEM;
609 		goto fail3;
610 	}
611 
612 	/* Read mc sensor mask */
613 	if ((rc = efx_mcdi_sensor_info(enp,
614 		    encp->enc_mcdi_sensor_maskp,
615 		    npages)) != 0)
616 		goto fail4;
617 
618 	/* Build monitor statistics mask */
619 	mcdi_mon_decode_stats(enp,
620 	    encp->enc_mcdi_sensor_maskp,
621 	    encp->enc_mcdi_sensor_mask_size,
622 	    NULL, encp->enc_mon_stat_mask, NULL);
623 
624 	return (0);
625 
626 fail4:
627 	EFSYS_PROBE(fail4);
628 	EFSYS_KMEM_FREE(enp->en_esip,
629 	    encp->enc_mcdi_sensor_mask_size,
630 	    encp->enc_mcdi_sensor_maskp);
631 
632 fail3:
633 	EFSYS_PROBE(fail3);
634 
635 fail2:
636 	EFSYS_PROBE(fail2);
637 
638 fail1:
639 	EFSYS_PROBE1(fail1, efx_rc_t, rc);
640 
641 	return (rc);
642 }
643 
644 			void
645 mcdi_mon_cfg_free(
646 	__in		efx_nic_t *enp)
647 {
648 	efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
649 
650 	if (encp->enc_mcdi_sensor_maskp != NULL) {
651 		EFSYS_KMEM_FREE(enp->en_esip,
652 		    encp->enc_mcdi_sensor_mask_size,
653 		    encp->enc_mcdi_sensor_maskp);
654 	}
655 }
656 
657 #endif	/* EFSYS_OPT_MON_STATS */
658 
659 #endif	/* EFSYS_OPT_MON_MCDI */
660