sfxge_mon.c revision 49ef7e0638c8b771d8a136eae78b1c0f99acc8e0
/*
* Copyright (c) 2008-2016 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/types.h>
#include <sys/sysmacros.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>
#include "sfxge.h"
#include "efx.h"
/* Monitor DMA attributes */
static ddi_device_acc_attr_t sfxge_mon_devacc = {
DDI_DEVICE_ATTR_V0, /* devacc_attr_version */
DDI_NEVERSWAP_ACC, /* devacc_attr_endian_flags */
DDI_STRICTORDER_ACC /* devacc_attr_dataorder */
};
static ddi_dma_attr_t sfxge_mon_dma_attr = {
DMA_ATTR_V0, /* dma_attr_version */
0, /* dma_attr_addr_lo */
0xffffffffffffffffull, /* dma_attr_addr_hi */
0xffffffffffffffffull, /* dma_attr_count_max */
0x1000, /* dma_attr_align */
0xffffffff, /* dma_attr_burstsizes */
1, /* dma_attr_minxfer */
0xffffffffffffffffull, /* dma_attr_maxxfer */
0xffffffffffffffffull, /* dma_attr_seg */
1, /* dma_attr_sgllen */
1, /* dma_attr_granular */
0 /* dma_attr_flags */
};
static int
sfxge_mon_kstat_update(kstat_t *ksp, int rw)
{
sfxge_t *sp = ksp->ks_private;
sfxge_mon_t *smp = &(sp->s_mon);
efsys_mem_t *esmp = &(smp->sm_mem);
efx_nic_t *enp = sp->s_enp;
kstat_named_t *knp;
const efx_nic_cfg_t *encp = efx_nic_cfg_get(sp->s_enp);
int rc, sn;
if (rw != KSTAT_READ) {
rc = EACCES;
goto fail1;
}
ASSERT(mutex_owned(&(smp->sm_lock)));
if (smp->sm_state != SFXGE_MON_STARTED)
goto done;
if (smp->sm_polling) {
rc = efx_mon_stats_update(enp, esmp, smp->sm_statbuf);
if (rc != 0)
goto fail2;
}
knp = smp->sm_stat;
for (sn = 0; sn < EFX_MON_NSTATS; sn++) {
if (encp->enc_mon_stat_mask[sn / EFX_MON_MASK_ELEMENT_SIZE] &
(1 << (sn % EFX_MON_MASK_ELEMENT_SIZE))) {
knp->value.ui64 = smp->sm_statbuf[sn].emsv_value;
knp++;
}
}
knp->value.ui32 = sp->s_num_restarts;
knp++;
knp->value.ui32 = sp->s_num_restarts_hw_err;
knp++;
knp->value.ui32 = smp->sm_polling;
knp++;
done:
return (0);
fail2:
DTRACE_PROBE(fail2);
fail1:
DTRACE_PROBE1(fail1, int, rc);
return (rc);
}
static int
sfxge_mon_kstat_init(sfxge_t *sp)
{
sfxge_mon_t *smp = &(sp->s_mon);
dev_info_t *dip = sp->s_dip;
efx_nic_t *enp = sp->s_enp;
kstat_t *ksp;
kstat_named_t *knp;
char name[MAXNAMELEN];
unsigned int id;
const efx_nic_cfg_t *encp = efx_nic_cfg_get(sp->s_enp);
int rc;
int nstat;
if ((smp->sm_statbuf = kmem_zalloc(sizeof (uint32_t) * EFX_MON_NSTATS,
KM_NOSLEEP)) == NULL) {
rc = ENOMEM;
goto fail1;
}
(void) snprintf(name, MAXNAMELEN - 1, "%s_%s", ddi_driver_name(dip),
efx_mon_name(enp));
/* Create the set */
for (id = 0, nstat = 0; id < EFX_MON_NSTATS; id++) {
if (encp->enc_mon_stat_mask[id / EFX_MON_MASK_ELEMENT_SIZE] &
(1 << (id % EFX_MON_MASK_ELEMENT_SIZE))) {
nstat++;
}
}
if ((ksp = kstat_create((char *)ddi_driver_name(dip),
ddi_get_instance(dip), name, "mon", KSTAT_TYPE_NAMED,
nstat+3, 0)) == NULL) {
rc = ENOMEM;
goto fail2;
}
smp->sm_ksp = ksp;
ksp->ks_update = sfxge_mon_kstat_update;
ksp->ks_private = sp;
ksp->ks_lock = &(smp->sm_lock);
/* Initialise the named stats */
smp->sm_stat = knp = ksp->ks_data;
for (id = 0; id < EFX_MON_NSTATS; id++) {
if (encp->enc_mon_stat_mask[id / EFX_MON_MASK_ELEMENT_SIZE] &
(1 << (id % EFX_MON_MASK_ELEMENT_SIZE))) {
kstat_named_init(knp,
(char *)efx_mon_stat_name(enp, id),
KSTAT_DATA_UINT64);
knp++;
}
}
kstat_named_init(knp, "num_restarts", KSTAT_DATA_UINT32);
knp++;
kstat_named_init(knp, "num_restarts_hw_err", KSTAT_DATA_UINT32);
knp++;
kstat_named_init(knp, "mon_polling", KSTAT_DATA_UINT32);
knp++;
kstat_install(ksp);
return (0);
fail2:
DTRACE_PROBE(fail2);
kmem_free(smp->sm_statbuf, sizeof (uint32_t) * EFX_MON_NSTATS);
fail1:
DTRACE_PROBE1(fail1, int, rc);
return (rc);
}
static void
sfxge_mon_kstat_fini(sfxge_t *sp)
{
sfxge_mon_t *smp = &(sp->s_mon);
/* Destroy the set */
kstat_delete(smp->sm_ksp);
smp->sm_ksp = NULL;
smp->sm_stat = NULL;
kmem_free(smp->sm_statbuf, sizeof (uint32_t) * EFX_MON_NSTATS);
}
int
sfxge_mon_init(sfxge_t *sp)
{
sfxge_mon_t *smp = &(sp->s_mon);
efx_nic_t *enp = sp->s_enp;
efsys_mem_t *esmp = &(smp->sm_mem);
sfxge_dma_buffer_attr_t dma_attr;
const efx_nic_cfg_t *encp = efx_nic_cfg_get(enp);
int rc;
SFXGE_OBJ_CHECK(smp, sfxge_mon_t);
ASSERT3U(smp->sm_state, ==, SFXGE_MON_UNINITIALIZED);
smp->sm_sp = sp;
mutex_init(&(smp->sm_lock), NULL, MUTEX_DRIVER, NULL);
dma_attr.sdba_dip = sp->s_dip;
dma_attr.sdba_dattrp = &sfxge_mon_dma_attr;
dma_attr.sdba_callback = DDI_DMA_SLEEP;
dma_attr.sdba_length = encp->enc_mon_stat_dma_buf_size;
dma_attr.sdba_memflags = DDI_DMA_CONSISTENT;
dma_attr.sdba_devaccp = &sfxge_mon_devacc;
dma_attr.sdba_bindflags = DDI_DMA_READ | DDI_DMA_CONSISTENT;
dma_attr.sdba_maxcookies = 1;
dma_attr.sdba_zeroinit = B_TRUE;
if ((rc = sfxge_dma_buffer_create(esmp, &dma_attr)) != 0)
goto fail1;
smp->sm_type = encp->enc_mon_type;
DTRACE_PROBE1(mon, efx_mon_type_t, smp->sm_type);
smp->sm_state = SFXGE_MON_INITIALIZED;
/* Initialize the statistics */
if ((rc = sfxge_mon_kstat_init(sp)) != 0)
goto fail2;
return (0);
fail2:
DTRACE_PROBE(fail2);
/* Tear down DMA setup */
sfxge_dma_buffer_destroy(esmp);
fail1:
DTRACE_PROBE1(fail1, int, rc);
mutex_destroy(&(smp->sm_lock));
smp->sm_sp = NULL;
SFXGE_OBJ_CHECK(smp, sfxge_mac_t);
return (rc);
}
int
sfxge_mon_start(sfxge_t *sp)
{
sfxge_mon_t *smp = &(sp->s_mon);
int rc;
mutex_enter(&(smp->sm_lock));
ASSERT3U(smp->sm_state, ==, SFXGE_MON_INITIALIZED);
/* Initialize the MON module */
if ((rc = efx_mon_init(sp->s_enp)) != 0)
goto fail1;
smp->sm_state = SFXGE_MON_STARTED;
mutex_exit(&(smp->sm_lock));
return (0);
fail1:
DTRACE_PROBE1(fail1, int, rc);
mutex_exit(&(smp->sm_lock));
return (rc);
}
void
sfxge_mon_stop(sfxge_t *sp)
{
sfxge_mon_t *smp = &(sp->s_mon);
mutex_enter(&(smp->sm_lock));
ASSERT3U(smp->sm_state, ==, SFXGE_MON_STARTED);
smp->sm_state = SFXGE_MON_INITIALIZED;
/* Tear down the MON module */
efx_mon_fini(sp->s_enp);
mutex_exit(&(smp->sm_lock));
}
void
sfxge_mon_fini(sfxge_t *sp)
{
sfxge_mon_t *smp = &(sp->s_mon);
efsys_mem_t *esmp = &(smp->sm_mem);
ASSERT3U(smp->sm_state, ==, SFXGE_MON_INITIALIZED);
/* Tear down the statistics */
sfxge_mon_kstat_fini(sp);
smp->sm_state = SFXGE_MON_UNINITIALIZED;
mutex_destroy(&(smp->sm_lock));
smp->sm_sp = NULL;
smp->sm_type = EFX_MON_INVALID;
/* Tear down DMA setup */
sfxge_dma_buffer_destroy(esmp);
SFXGE_OBJ_CHECK(smp, sfxge_mon_t);
}