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freebsd-dev/sys/dev/sfxge/common/efx_mon.c
Andrew Rybchenko 460cb5684c sfxge: add prefast annotation to common code return types 
Using a typedef for common code return types (rather than "int")
allows the Prefast static analyser to understand when a function
has been successful (and thus when its postconditions must hold).

This greatly reduces then number of false positives reported by
prefast for error paths in common code functions.

Submitted by:   Andy Moreton <amoreton at solarflare.com>
Sponsored by:   Solarflare Communications, Inc.
MFC after:      2 days
2015-11-29 05:42:49 +00:00

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/*-
* Copyright (c) 2007-2015 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 <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "efsys.h"
#include "efx.h"
#include "efx_types.h"
#include "efx_regs.h"
#include "efx_impl.h"
#if EFSYS_OPT_MON_NULL
#include "nullmon.h"
#endif
#if EFSYS_OPT_MON_LM87
#include "lm87.h"
#endif
#if EFSYS_OPT_MON_MAX6647
#include "max6647.h"
#endif
#if EFSYS_OPT_MON_MCDI
#include "mcdi_mon.h"
#endif
#if EFSYS_OPT_NAMES
static const char *__efx_mon_name[] = {
"",
"nullmon",
"lm87",
"max6647",
"sfx90x0",
"sfx91x0"
};
const char *
efx_mon_name(
__in efx_nic_t *enp)
{
efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
EFSYS_ASSERT(encp->enc_mon_type != EFX_MON_INVALID);
EFSYS_ASSERT3U(encp->enc_mon_type, <, EFX_MON_NTYPES);
return (__efx_mon_name[encp->enc_mon_type]);
}
#endif /* EFSYS_OPT_NAMES */
#if EFSYS_OPT_MON_NULL
static efx_mon_ops_t __efx_mon_null_ops = {
nullmon_reset, /* emo_reset */
nullmon_reconfigure, /* emo_reconfigure */
#if EFSYS_OPT_MON_STATS
nullmon_stats_update /* emo_stats_update */
#endif /* EFSYS_OPT_MON_STATS */
};
#endif
#if EFSYS_OPT_MON_LM87
static efx_mon_ops_t __efx_mon_lm87_ops = {
lm87_reset, /* emo_reset */
lm87_reconfigure, /* emo_reconfigure */
#if EFSYS_OPT_MON_STATS
lm87_stats_update /* emo_stats_update */
#endif /* EFSYS_OPT_MON_STATS */
};
#endif
#if EFSYS_OPT_MON_MAX6647
static efx_mon_ops_t __efx_mon_max6647_ops = {
max6647_reset, /* emo_reset */
max6647_reconfigure, /* emo_reconfigure */
#if EFSYS_OPT_MON_STATS
max6647_stats_update /* emo_stats_update */
#endif /* EFSYS_OPT_MON_STATS */
};
#endif
#if EFSYS_OPT_MON_MCDI
static efx_mon_ops_t __efx_mon_mcdi_ops = {
NULL, /* emo_reset */
NULL, /* emo_reconfigure */
#if EFSYS_OPT_MON_STATS
mcdi_mon_stats_update /* emo_stats_update */
#endif /* EFSYS_OPT_MON_STATS */
};
#endif
static efx_mon_ops_t *__efx_mon_ops[] = {
NULL,
#if EFSYS_OPT_MON_NULL
&__efx_mon_null_ops,
#else
NULL,
#endif
#if EFSYS_OPT_MON_LM87
&__efx_mon_lm87_ops,
#else
NULL,
#endif
#if EFSYS_OPT_MON_MAX6647
&__efx_mon_max6647_ops,
#else
NULL,
#endif
#if EFSYS_OPT_MON_MCDI
&__efx_mon_mcdi_ops,
#else
NULL,
#endif
#if EFSYS_OPT_MON_MCDI
&__efx_mon_mcdi_ops
#else
NULL
#endif
};
__checkReturn efx_rc_t
efx_mon_init(
__in efx_nic_t *enp)
{
efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
efx_mon_t *emp = &(enp->en_mon);
efx_mon_ops_t *emop;
efx_rc_t rc;
EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PROBE);
if (enp->en_mod_flags & EFX_MOD_MON) {
rc = EINVAL;
goto fail1;
}
enp->en_mod_flags |= EFX_MOD_MON;
emp->em_type = encp->enc_mon_type;
EFSYS_ASSERT(encp->enc_mon_type != EFX_MON_INVALID);
EFSYS_ASSERT3U(emp->em_type, <, EFX_MON_NTYPES);
if ((emop = (efx_mon_ops_t *)__efx_mon_ops[emp->em_type]) == NULL) {
rc = ENOTSUP;
goto fail2;
}
if (emop->emo_reset != NULL) {
if ((rc = emop->emo_reset(enp)) != 0)
goto fail3;
}
if (emop->emo_reconfigure != NULL) {
if ((rc = emop->emo_reconfigure(enp)) != 0)
goto fail4;
}
emp->em_emop = emop;
return (0);
fail4:
EFSYS_PROBE(fail5);
if (emop->emo_reset != NULL)
(void) emop->emo_reset(enp);
fail3:
EFSYS_PROBE(fail4);
fail2:
EFSYS_PROBE(fail3);
emp->em_type = EFX_MON_INVALID;
enp->en_mod_flags &= ~EFX_MOD_MON;
fail1:
EFSYS_PROBE1(fail1, efx_rc_t, rc);
return (rc);
}
#if EFSYS_OPT_MON_STATS
#if EFSYS_OPT_NAMES
/* START MKCONFIG GENERATED MonitorStatNamesBlock b9328f15438c4d01 */
static const char *__mon_stat_name[] = {
"value_2_5v",
"value_vccp1",
"value_vcc",
"value_5v",
"value_12v",
"value_vccp2",
"value_ext_temp",
"value_int_temp",
"value_ain1",
"value_ain2",
"controller_cooling",
"ext_cooling",
"1v",
"1_2v",
"1_8v",
"3_3v",
"1_2va",
"vref",
"vaoe",
"aoe_temperature",
"psu_aoe_temperature",
"psu_temperature",
"fan0",
"fan1",
"fan2",
"fan3",
"fan4",
"vaoe_in",
"iaoe",
"iaoe_in",
"nic_power",
"0_9v",
"i0_9v",
"i1_2v",
"0_9v_adc",
"controller_temperature2",
"vreg_temperature",
"vreg_0_9v_temperature",
"vreg_1_2v_temperature",
"int_vptat",
"controller_internal_adc_temperature",
"ext_vptat",
"controller_external_adc_temperature",
"ambient_temperature",
"airflow",
"vdd08d_vss08d_csr",
"vdd08d_vss08d_csr_extadc",
"hotpoint_temperature",
"phy_power_switch_port0",
"phy_power_switch_port1",
"mum_vcc",
"0v9_a",
"i0v9_a",
"0v9_a_temp",
"0v9_b",
"i0v9_b",
"0v9_b_temp",
"ccom_avreg_1v2_supply",
"ccom_avreg_1v2_supply_ext_adc",
"ccom_avreg_1v8_supply",
"ccom_avreg_1v8_supply_ext_adc",
"controller_master_vptat",
"controller_master_internal_temp",
"controller_master_vptat_ext_adc",
"controller_master_internal_temp_ext_adc",
"controller_slave_vptat",
"controller_slave_internal_temp",
"controller_slave_vptat_ext_adc",
"controller_slave_internal_temp_ext_adc",
};
/* END MKCONFIG GENERATED MonitorStatNamesBlock */
extern const char *
efx_mon_stat_name(
__in efx_nic_t *enp,
__in efx_mon_stat_t id)
{
_NOTE(ARGUNUSED(enp))
EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
EFSYS_ASSERT3U(id, <, EFX_MON_NSTATS);
return (__mon_stat_name[id]);
}
#endif /* EFSYS_OPT_NAMES */
__checkReturn efx_rc_t
efx_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_mon_t *emp = &(enp->en_mon);
efx_mon_ops_t *emop = emp->em_emop;
EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_MON);
return (emop->emo_stats_update(enp, esmp, values));
}
#endif /* EFSYS_OPT_MON_STATS */
void
efx_mon_fini(
__in efx_nic_t *enp)
{
efx_mon_t *emp = &(enp->en_mon);
efx_mon_ops_t *emop = emp->em_emop;
efx_rc_t rc;
EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PROBE);
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_MON);
emp->em_emop = NULL;
if (emop->emo_reset != NULL) {
rc = emop->emo_reset(enp);
if (rc != 0)
EFSYS_PROBE1(fail1, efx_rc_t, rc);
}
emp->em_type = EFX_MON_INVALID;
enp->en_mod_flags &= ~EFX_MOD_MON;
}
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