text: /*
   * Copyright (c) 2009-2015 Solarflare Communications Inc.
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *
   * 1. Redistributions of source code must retain the above copyright notice,
   *    this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright notice,
   *    this list of conditions and the following disclaimer in the documentation
   *    and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
   * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
   * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
   * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
   * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
   * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   * The views and conclusions contained in the software and documentation are
   * those of the authors and should not be interpreted as representing official
   * policies, either expressed or implied, of the FreeBSD Project.
   */
  
  #include "efx.h"
  #include "efx_impl.h"
  
  #if EFSYS_OPT_MON_MCDI
  
  #if EFSYS_OPT_MON_STATS
  
  #define	MCDI_MON_NEXT_PAGE  (uint16_t)0xfffe
  #define	MCDI_MON_INVALID_SENSOR (uint16_t)0xfffd
  #define	MCDI_MON_PAGE_SIZE 0x20
  
  /* Bitmasks of valid port(s) for each sensor */
  #define	MCDI_MON_PORT_NONE	(0x00)
  #define	MCDI_MON_PORT_P1	(0x01)
  #define	MCDI_MON_PORT_P2	(0x02)
  #define	MCDI_MON_PORT_P3	(0x04)
  #define	MCDI_MON_PORT_P4	(0x08)
  #define	MCDI_MON_PORT_Px	(0xFFFF)
  
  /* Entry for MCDI sensor in sensor map */
  #define	STAT(portmask, stat)	\
  	{ (MCDI_MON_PORT_##portmask), (EFX_MON_STAT_##stat) }
  
  /* Entry for sensor next page flag in sensor map */
  #define	STAT_NEXT_PAGE()	\
  	{ MCDI_MON_PORT_NONE, MCDI_MON_NEXT_PAGE }
  
  /* Placeholder for gaps in the array */
  #define	STAT_NO_SENSOR()	\
  	{ MCDI_MON_PORT_NONE, MCDI_MON_INVALID_SENSOR }
  
  /* Map from MC sensors to monitor statistics */
  static const struct mcdi_sensor_map_s {
  	uint16_t	msm_port_mask;
  	uint16_t	msm_stat;
  } mcdi_sensor_map[] = {
  	/* Sensor page 0		MC_CMD_SENSOR_xxx */
  	STAT(Px, INT_TEMP),		/* 0x00 CONTROLLER_TEMP */
  	STAT(Px, EXT_TEMP),		/* 0x01 PHY_COMMON_TEMP */
  	STAT(Px, INT_COOLING),		/* 0x02 CONTROLLER_COOLING */
  	STAT(P1, EXT_TEMP),		/* 0x03 PHY0_TEMP */
  	STAT(P1, EXT_COOLING),		/* 0x04 PHY0_COOLING */
  	STAT(P2, EXT_TEMP),		/* 0x05 PHY1_TEMP */
  	STAT(P2, EXT_COOLING),		/* 0x06 PHY1_COOLING */
  	STAT(Px, 1V),			/* 0x07 IN_1V0 */
  	STAT(Px, 1_2V),			/* 0x08 IN_1V2 */
  	STAT(Px, 1_8V),			/* 0x09 IN_1V8 */
  	STAT(Px, 2_5V),			/* 0x0a IN_2V5 */
  	STAT(Px, 3_3V),			/* 0x0b IN_3V3 */
  	STAT(Px, 12V),			/* 0x0c IN_12V0 */
  	STAT(Px, 1_2VA),		/* 0x0d IN_1V2A */
  	STAT(Px, VREF),			/* 0x0e IN_VREF */
  	STAT(Px, VAOE),			/* 0x0f OUT_VAOE */
  	STAT(Px, AOE_TEMP),		/* 0x10 AOE_TEMP */
  	STAT(Px, PSU_AOE_TEMP),		/* 0x11 PSU_AOE_TEMP */
  	STAT(Px, PSU_TEMP),		/* 0x12 PSU_TEMP */
  	STAT(Px, FAN0),			/* 0x13 FAN_0 */
  	STAT(Px, FAN1),			/* 0x14 FAN_1 */
  	STAT(Px, FAN2),			/* 0x15 FAN_2 */
  	STAT(Px, FAN3),			/* 0x16 FAN_3 */
  	STAT(Px, FAN4),			/* 0x17 FAN_4 */
  	STAT(Px, VAOE_IN),		/* 0x18 IN_VAOE */
  	STAT(Px, IAOE),			/* 0x19 OUT_IAOE */
  	STAT(Px, IAOE_IN),		/* 0x1a IN_IAOE */
  	STAT(Px, NIC_POWER),		/* 0x1b NIC_POWER */
  	STAT(Px, 0_9V),			/* 0x1c IN_0V9 */
  	STAT(Px, I0_9V),		/* 0x1d IN_I0V9 */
  	STAT(Px, I1_2V),		/* 0x1e IN_I1V2 */
  	STAT_NEXT_PAGE(),		/* 0x1f Next page flag (not a sensor) */
  
  	/* Sensor page 1		MC_CMD_SENSOR_xxx */
  	STAT(Px, 0_9V_ADC),		/* 0x20 IN_0V9_ADC */
  	STAT(Px, INT_TEMP2),		/* 0x21 CONTROLLER_2_TEMP */
  	STAT(Px, VREG_TEMP),		/* 0x22 VREG_INTERNAL_TEMP */
  	STAT(Px, VREG_0_9V_TEMP),	/* 0x23 VREG_0V9_TEMP */
  	STAT(Px, VREG_1_2V_TEMP),	/* 0x24 VREG_1V2_TEMP */
  	STAT(Px, INT_VPTAT),		/* 0x25 CTRLR. VPTAT */
  	STAT(Px, INT_ADC_TEMP),		/* 0x26 CTRLR. INTERNAL_TEMP */
  	STAT(Px, EXT_VPTAT),		/* 0x27 CTRLR. VPTAT_EXTADC */
  	STAT(Px, EXT_ADC_TEMP),		/* 0x28 CTRLR. INTERNAL_TEMP_EXTADC */
  	STAT(Px, AMBIENT_TEMP),		/* 0x29 AMBIENT_TEMP */
  	STAT(Px, AIRFLOW),		/* 0x2a AIRFLOW */
  	STAT(Px, VDD08D_VSS08D_CSR),	/* 0x2b VDD08D_VSS08D_CSR */
  	STAT(Px, VDD08D_VSS08D_CSR_EXTADC), /* 0x2c VDD08D_VSS08D_CSR_EXTADC */
  	STAT(Px, HOTPOINT_TEMP),	/* 0x2d HOTPOINT_TEMP */
  	STAT(P1, PHY_POWER_SWITCH_PORT0),   /* 0x2e PHY_POWER_SWITCH_PORT0 */
  	STAT(P2, PHY_POWER_SWITCH_PORT1),   /* 0x2f PHY_POWER_SWITCH_PORT1 */
  	STAT(Px, MUM_VCC),		/* 0x30 MUM_VCC */
  	STAT(Px, 0V9_A),		/* 0x31 0V9_A */
  	STAT(Px, I0V9_A),		/* 0x32 I0V9_A */
  	STAT(Px, 0V9_A_TEMP),		/* 0x33 0V9_A_TEMP */
  	STAT(Px, 0V9_B),		/* 0x34 0V9_B */
  	STAT(Px, I0V9_B),		/* 0x35 I0V9_B */
  	STAT(Px, 0V9_B_TEMP),		/* 0x36 0V9_B_TEMP */
  	STAT(Px, CCOM_AVREG_1V2_SUPPLY),  /* 0x37 CCOM_AVREG_1V2_SUPPLY */
  	STAT(Px, CCOM_AVREG_1V2_SUPPLY_EXT_ADC),
  					/* 0x38 CCOM_AVREG_1V2_SUPPLY_EXT_ADC */
  	STAT(Px, CCOM_AVREG_1V8_SUPPLY),  /* 0x39 CCOM_AVREG_1V8_SUPPLY */
  	STAT(Px, CCOM_AVREG_1V8_SUPPLY_EXT_ADC),
  					/* 0x3a CCOM_AVREG_1V8_SUPPLY_EXT_ADC */
  	STAT_NO_SENSOR(),		/* 0x3b (no sensor) */
  	STAT_NO_SENSOR(),		/* 0x3c (no sensor) */
  	STAT_NO_SENSOR(),		/* 0x3d (no sensor) */
  	STAT_NO_SENSOR(),		/* 0x3e (no sensor) */
  	STAT_NEXT_PAGE(),		/* 0x3f Next page flag (not a sensor) */
  
  	/* Sensor page 2		MC_CMD_SENSOR_xxx */
  	STAT(Px, CONTROLLER_MASTER_VPTAT),	   /* 0x40 MASTER_VPTAT */
  	STAT(Px, CONTROLLER_MASTER_INTERNAL_TEMP), /* 0x41 MASTER_INT_TEMP */
  	STAT(Px, CONTROLLER_MASTER_VPTAT_EXT_ADC), /* 0x42 MAST_VPTAT_EXT_ADC */
  	STAT(Px, CONTROLLER_MASTER_INTERNAL_TEMP_EXT_ADC),
  					/* 0x43 MASTER_INTERNAL_TEMP_EXT_ADC */
  	STAT(Px, CONTROLLER_SLAVE_VPTAT),	  /* 0x44 SLAVE_VPTAT */
  	STAT(Px, CONTROLLER_SLAVE_INTERNAL_TEMP), /* 0x45 SLAVE_INTERNAL_TEMP */
  	STAT(Px, CONTROLLER_SLAVE_VPTAT_EXT_ADC), /* 0x46 SLAVE_VPTAT_EXT_ADC */
  	STAT(Px, CONTROLLER_SLAVE_INTERNAL_TEMP_EXT_ADC),
  					/* 0x47 SLAVE_INTERNAL_TEMP_EXT_ADC */
  	STAT_NO_SENSOR(),		/* 0x48 (no sensor) */
  	STAT(Px, SODIMM_VOUT),		/* 0x49 SODIMM_VOUT */
  	STAT(Px, SODIMM_0_TEMP),	/* 0x4a SODIMM_0_TEMP */
  	STAT(Px, SODIMM_1_TEMP),	/* 0x4b SODIMM_1_TEMP */
  	STAT(Px, PHY0_VCC),		/* 0x4c PHY0_VCC */
  	STAT(Px, PHY1_VCC),		/* 0x4d PHY1_VCC */
  	STAT(Px, CONTROLLER_TDIODE_TEMP), /* 0x4e CONTROLLER_TDIODE_TEMP */
  	STAT(Px, BOARD_FRONT_TEMP), 	/* 0x4f BOARD_FRONT_TEMP */
  	STAT(Px, BOARD_BACK_TEMP), 	/* 0x50 BOARD_BACK_TEMP */
  };
  
  #define	MCDI_STATIC_SENSOR_ASSERT(_field)				\
  	EFX_STATIC_ASSERT(MC_CMD_SENSOR_STATE_ ## _field		\
  			    == EFX_MON_STAT_STATE_ ## _field)
  
  static						void
  mcdi_mon_decode_stats(
  	__in					efx_nic_t *enp,
  	__in_ecount(sensor_mask_size)		uint32_t *sensor_mask,
  	__in					size_t sensor_mask_size,
  	__in_opt				efsys_mem_t *esmp,
  	__out_ecount_opt(sensor_mask_size)	uint32_t *stat_maskp,
  	__inout_ecount_opt(EFX_MON_NSTATS)	efx_mon_stat_value_t *stat)
  {
  	efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip);
  	uint16_t port_mask;
  	uint16_t sensor;
  	size_t sensor_max;
  	uint32_t stat_mask[(EFX_ARRAY_SIZE(mcdi_sensor_map) + 31) / 32];
  	uint32_t idx = 0;
  	uint32_t page = 0;
  
  	/* Assert the MC_CMD_SENSOR and EFX_MON_STATE namespaces agree */
  	MCDI_STATIC_SENSOR_ASSERT(OK);
  	MCDI_STATIC_SENSOR_ASSERT(WARNING);
  	MCDI_STATIC_SENSOR_ASSERT(FATAL);
  	MCDI_STATIC_SENSOR_ASSERT(BROKEN);
  	MCDI_STATIC_SENSOR_ASSERT(NO_READING);
  
  	EFX_STATIC_ASSERT(sizeof (stat_mask[0]) * 8 ==
  	    EFX_MON_MASK_ELEMENT_SIZE);
  	sensor_max =
  	    MIN((8 * sensor_mask_size), EFX_ARRAY_SIZE(mcdi_sensor_map));
  
  	port_mask = 1U << emip->emi_port;
  
  	(void) memset(stat_mask, 0, sizeof (stat_mask));
  
  	/*
  	 * The MCDI sensor readings in the DMA buffer are a packed array of
  	 * MC_CMD_SENSOR_VALUE_ENTRY structures, which only includes entries for
  	 * supported sensors (bit set in sensor_mask). The sensor_mask and
  	 * sensor readings do not include entries for the per-page NEXT_PAGE
  	 * flag.
  	 *
  	 * sensor_mask may legitimately contain MCDI sensors that the driver
  	 * does not understand.
  	 */
  	for (sensor = 0; sensor < sensor_max; ++sensor) {
  		efx_mon_stat_t id = mcdi_sensor_map[sensor].msm_stat;
  
  		if ((sensor % MCDI_MON_PAGE_SIZE) == MC_CMD_SENSOR_PAGE0_NEXT) {
  			EFSYS_ASSERT3U(id, ==, MCDI_MON_NEXT_PAGE);
  			page++;
  			continue;
  		}
  		if (~(sensor_mask[page]) & (1U << sensor))
  			continue;
  		idx++;
  
  		if ((port_mask & mcdi_sensor_map[sensor].msm_port_mask) == 0)
  			continue;
  		EFSYS_ASSERT(id < EFX_MON_NSTATS);
  
  		/*
  		 * stat_mask is a bitmask indexed by EFX_MON_* monitor statistic
  		 * identifiers from efx_mon_stat_t (without NEXT_PAGE bits).
  		 *
  		 * If there is an entry in the MCDI sensor to monitor statistic
  		 * map then the sensor reading is used for the value of the
  		 * monitor statistic.
  		 */
  		stat_mask[id / EFX_MON_MASK_ELEMENT_SIZE] |=
  		    (1U << (id % EFX_MON_MASK_ELEMENT_SIZE));
  
  		if (stat != NULL && esmp != NULL && !EFSYS_MEM_IS_NULL(esmp)) {
  			efx_dword_t dword;
  
  			/* Get MCDI sensor reading from DMA buffer */
  			EFSYS_MEM_READD(esmp, 4 * (idx - 1), &dword);
  
  			/* Update EFX monitor stat from MCDI sensor reading */
  			stat[id].emsv_value = (uint16_t)EFX_DWORD_FIELD(dword,
  			    MC_CMD_SENSOR_VALUE_ENTRY_TYPEDEF_VALUE);
  
  			stat[id].emsv_state = (uint16_t)EFX_DWORD_FIELD(dword,
  			    MC_CMD_SENSOR_VALUE_ENTRY_TYPEDEF_STATE);
  		}
  	}
  
  	if (stat_maskp != NULL) {
  		(void) memcpy(stat_maskp, stat_mask, sizeof (stat_mask));
  	}
  }
  
  	__checkReturn			efx_rc_t
  mcdi_mon_ev(
  	__in				efx_nic_t *enp,
  	__in				efx_qword_t *eqp,
  	__out				efx_mon_stat_t *idp,
  	__out				efx_mon_stat_value_t *valuep)
  {
  	efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip);
  	efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
  	uint16_t port_mask;
  	uint16_t sensor;
  	uint16_t state;
  	uint16_t value;
  	efx_mon_stat_t id;
  	efx_rc_t rc;
  
  	port_mask = (emip->emi_port == 1)
  	    ? MCDI_MON_PORT_P1
  	    : MCDI_MON_PORT_P2;
  
  	sensor = (uint16_t)MCDI_EV_FIELD(eqp, SENSOREVT_MONITOR);
  	state = (uint16_t)MCDI_EV_FIELD(eqp, SENSOREVT_STATE);
  	value = (uint16_t)MCDI_EV_FIELD(eqp, SENSOREVT_VALUE);
  
  	/* Hardware must support this MCDI sensor */
  	EFSYS_ASSERT3U(sensor, <, (8 * encp->enc_mcdi_sensor_mask_size));
  	EFSYS_ASSERT((sensor % MCDI_MON_PAGE_SIZE) != MC_CMD_SENSOR_PAGE0_NEXT);
  	EFSYS_ASSERT(encp->enc_mcdi_sensor_maskp != NULL);
  	EFSYS_ASSERT((encp->enc_mcdi_sensor_maskp[sensor / MCDI_MON_PAGE_SIZE] &
  		(1U << (sensor % MCDI_MON_PAGE_SIZE))) != 0);
  
  	/* But we don't have to understand it */
  	if (sensor >= EFX_ARRAY_SIZE(mcdi_sensor_map)) {
  		rc = ENOTSUP;
  		goto fail1;
  	}
  	id = mcdi_sensor_map[sensor].msm_stat;
  	if ((port_mask & mcdi_sensor_map[sensor].msm_port_mask) == 0)
  		return (ENODEV);
  	EFSYS_ASSERT(id < EFX_MON_NSTATS);
  
  	*idp = id;
  	valuep->emsv_value = value;
  	valuep->emsv_state = state;
  
  	return (0);
  
  fail1:
  	EFSYS_PROBE1(fail1, efx_rc_t, rc);
  
  	return (rc);
  }
  
  
  static	__checkReturn	efx_rc_t
  efx_mcdi_read_sensors(
  	__in		efx_nic_t *enp,
  	__in		efsys_mem_t *esmp,
  	__in		uint32_t size)
  {
  	efx_mcdi_req_t req;
  	uint8_t payload[MAX(MC_CMD_READ_SENSORS_EXT_IN_LEN,
  			    MC_CMD_READ_SENSORS_EXT_OUT_LEN)];
  	uint32_t addr_lo, addr_hi;
  
  	req.emr_cmd = MC_CMD_READ_SENSORS;
  	req.emr_in_buf = payload;
  	req.emr_in_length = MC_CMD_READ_SENSORS_EXT_IN_LEN;
  	req.emr_out_buf = payload;
  	req.emr_out_length = MC_CMD_READ_SENSORS_EXT_OUT_LEN;
  
  	addr_lo = (uint32_t)(EFSYS_MEM_ADDR(esmp) & 0xffffffff);
  	addr_hi = (uint32_t)(EFSYS_MEM_ADDR(esmp) >> 32);
  
  	MCDI_IN_SET_DWORD(req, READ_SENSORS_EXT_IN_DMA_ADDR_LO, addr_lo);
  	MCDI_IN_SET_DWORD(req, READ_SENSORS_EXT_IN_DMA_ADDR_HI, addr_hi);
  	MCDI_IN_SET_DWORD(req, READ_SENSORS_EXT_IN_LENGTH, size);
  
  	efx_mcdi_execute(enp, &req);
  
  	return (req.emr_rc);
  }
  
  static	__checkReturn	efx_rc_t
  efx_mcdi_sensor_info_npages(
  	__in		efx_nic_t *enp,
  	__out		uint32_t *npagesp)
  {
  	efx_mcdi_req_t req;
  	uint8_t payload[MAX(MC_CMD_SENSOR_INFO_EXT_IN_LEN,
  			    MC_CMD_SENSOR_INFO_OUT_LENMAX)];
  	int page;
  	efx_rc_t rc;
  
  	EFSYS_ASSERT(npagesp != NULL);
  
  	page = 0;
  	do {
  		(void) memset(payload, 0, sizeof (payload));
  		req.emr_cmd = MC_CMD_SENSOR_INFO;
  		req.emr_in_buf = payload;
  		req.emr_in_length = MC_CMD_SENSOR_INFO_EXT_IN_LEN;
  		req.emr_out_buf = payload;
  		req.emr_out_length = MC_CMD_SENSOR_INFO_OUT_LENMAX;
  
  		MCDI_IN_SET_DWORD(req, SENSOR_INFO_EXT_IN_PAGE, page++);
  
  		efx_mcdi_execute_quiet(enp, &req);
  
  		if (req.emr_rc != 0) {
  			rc = req.emr_rc;
  			goto fail1;
  		}
  	} while (MCDI_OUT_DWORD(req, SENSOR_INFO_OUT_MASK) &
  	    (1U << MC_CMD_SENSOR_PAGE0_NEXT));
  
  	*npagesp = page;
  
  	return (0);
  
  fail1:
  	EFSYS_PROBE1(fail1, efx_rc_t, rc);
  
  	return (rc);
  }
  
  static	__checkReturn		efx_rc_t
  efx_mcdi_sensor_info(
  	__in			efx_nic_t *enp,
  	__out_ecount(npages)	uint32_t *sensor_maskp,
  	__in			size_t npages)
  {
  	efx_mcdi_req_t req;
  	uint8_t payload[MAX(MC_CMD_SENSOR_INFO_EXT_IN_LEN,
  			    MC_CMD_SENSOR_INFO_OUT_LENMAX)];
  	uint32_t page;
  	efx_rc_t rc;
  
  	EFSYS_ASSERT(sensor_maskp != NULL);
  
  	for (page = 0; page < npages; page++) {
  		uint32_t mask;
  
  		(void) memset(payload, 0, sizeof (payload));
  		req.emr_cmd = MC_CMD_SENSOR_INFO;
  		req.emr_in_buf = payload;
  		req.emr_in_length = MC_CMD_SENSOR_INFO_EXT_IN_LEN;
  		req.emr_out_buf = payload;
  		req.emr_out_length = MC_CMD_SENSOR_INFO_OUT_LENMAX;
  
  		MCDI_IN_SET_DWORD(req, SENSOR_INFO_EXT_IN_PAGE, page);
  
  		efx_mcdi_execute(enp, &req);
  
  		if (req.emr_rc != 0) {
  			rc = req.emr_rc;
  			goto fail1;
  		}
  
  		mask = MCDI_OUT_DWORD(req, SENSOR_INFO_OUT_MASK);
  
  		if ((page != (npages - 1)) &&
  		    ((mask & (1U << MC_CMD_SENSOR_PAGE0_NEXT)) == 0)) {
  			rc = EINVAL;
  			goto fail2;
  		}
  		sensor_maskp[page] = mask;
  	}
  
  	if (sensor_maskp[npages - 1] & (1U << MC_CMD_SENSOR_PAGE0_NEXT)) {
  		rc = EINVAL;
  		goto fail3;
  	}
  
  	return (0);
  
  fail3:
  	EFSYS_PROBE(fail3);
  fail2:
  	EFSYS_PROBE(fail2);
  fail1:
  	EFSYS_PROBE1(fail1, efx_rc_t, rc);
  
  	return (rc);
  }
  
  	__checkReturn			efx_rc_t
  mcdi_mon_stats_update(
  	__in				efx_nic_t *enp,
  	__in				efsys_mem_t *esmp,
  	__inout_ecount(EFX_MON_NSTATS)	efx_mon_stat_value_t *values)
  {
  	efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
  	uint32_t size = encp->enc_mon_stat_dma_buf_size;
  	efx_rc_t rc;
  
  	if ((rc = efx_mcdi_read_sensors(enp, esmp, size)) != 0)
  		goto fail1;
  
  	EFSYS_DMA_SYNC_FOR_KERNEL(esmp, 0, size);
  
  	mcdi_mon_decode_stats(enp,
  	    encp->enc_mcdi_sensor_maskp,
  	    encp->enc_mcdi_sensor_mask_size,
  	    esmp, NULL, values);
  
  	return (0);
  
  fail1:
  	EFSYS_PROBE1(fail1, efx_rc_t, rc);
  
  	return (rc);
  }
  
  	__checkReturn	efx_rc_t
  mcdi_mon_cfg_build(
  	__in		efx_nic_t *enp)
  {
  	efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
  	uint32_t npages;
  	efx_rc_t rc;
  
  	switch (enp->en_family) {
  #if EFSYS_OPT_SIENA
  	case EFX_FAMILY_SIENA:
  		encp->enc_mon_type = EFX_MON_SFC90X0;
  		break;
  #endif
  #if EFSYS_OPT_HUNTINGTON
  	case EFX_FAMILY_HUNTINGTON:
  		encp->enc_mon_type = EFX_MON_SFC91X0;
  		break;
  #endif
  #if EFSYS_OPT_MEDFORD
  	case EFX_FAMILY_MEDFORD:
  		encp->enc_mon_type = EFX_MON_SFC92X0;
  		break;
  #endif
  	default:
  		rc = EINVAL;
  		goto fail1;
  	}
  
  	/* Get mc sensor mask size */
  	npages = 0;
  	if ((rc = efx_mcdi_sensor_info_npages(enp, &npages)) != 0)
  		goto fail2;
  
  	encp->enc_mon_stat_dma_buf_size	= npages * EFX_MON_STATS_PAGE_SIZE;
  	encp->enc_mcdi_sensor_mask_size = npages * sizeof (uint32_t);
  
  	/* Allocate mc sensor mask */
  	EFSYS_KMEM_ALLOC(enp->en_esip,
  	    encp->enc_mcdi_sensor_mask_size,
  	    encp->enc_mcdi_sensor_maskp);
  
  	if (encp->enc_mcdi_sensor_maskp == NULL) {
  		rc = ENOMEM;
  		goto fail3;
  	}
  
  	/* Read mc sensor mask */
  	if ((rc = efx_mcdi_sensor_info(enp,
  		    encp->enc_mcdi_sensor_maskp,
  		    npages)) != 0)
  		goto fail4;
  
  	/* Build monitor statistics mask */
  	mcdi_mon_decode_stats(enp,
  	    encp->enc_mcdi_sensor_maskp,
  	    encp->enc_mcdi_sensor_mask_size,
  	    NULL, encp->enc_mon_stat_mask, NULL);
  
  	return (0);
  
  fail4:
  	EFSYS_PROBE(fail4);
  	EFSYS_KMEM_FREE(enp->en_esip,
  	    encp->enc_mcdi_sensor_mask_size,
  	    encp->enc_mcdi_sensor_maskp);
  
  fail3:
  	EFSYS_PROBE(fail3);
  
  fail2:
  	EFSYS_PROBE(fail2);
  
  fail1:
  	EFSYS_PROBE1(fail1, efx_rc_t, rc);
  
  	return (rc);
  }
  
  			void
  mcdi_mon_cfg_free(
  	__in		efx_nic_t *enp)
  {
  	efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
  
  	if (encp->enc_mcdi_sensor_maskp != NULL) {
  		EFSYS_KMEM_FREE(enp->en_esip,
  		    encp->enc_mcdi_sensor_mask_size,
  		    encp->enc_mcdi_sensor_maskp);
  	}
  }
  
  
  #endif	/* EFSYS_OPT_MON_STATS */
  
  #endif	/* EFSYS_OPT_MON_MCDI */
  