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/*-
* Copyright (c) 2012 Adrian Chadd
* 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,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
* redistribution must be conditioned upon including a substantially
* similar Disclaimer requirement for further binary redistribution.
*
* NO WARRANTY
* 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 NONINFRINGEMENT, MERCHANTIBILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
*
* $FreeBSD$
*/
#include "opt_ah.h"
#include "opt_ath.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/sysctl.h>
#include <sys/bus.h>
#include <sys/malloc.h>
#include <sys/proc.h>
#include <sys/pcpu.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/alq.h>
#include <sys/endian.h>
#include <sys/time.h>
#include <dev/ath/if_ath_alq.h>
#ifdef ATH_DEBUG_ALQ
static struct ale *
if_ath_alq_get(struct if_ath_alq *alq, int len)
{
struct ale *ale;
if (alq->sc_alq_isactive == 0)
return (NULL);
ale = alq_getn(alq->sc_alq_alq, len, ALQ_NOWAIT);
if (! ale)
alq->sc_alq_numlost++;
return (ale);
}
void
if_ath_alq_init(struct if_ath_alq *alq, const char *devname)
{
bzero(alq, sizeof(*alq));
strncpy(alq->sc_alq_devname, devname, ATH_ALQ_DEVNAME_LEN);
printf("%s (%s): attached\n", __func__, alq->sc_alq_devname);
snprintf(alq->sc_alq_filename, ATH_ALQ_FILENAME_LEN,
"/tmp/ath_%s_alq.log", alq->sc_alq_devname);
/* XXX too conservative, right? */
alq->sc_alq_qsize = (64*1024);
}
void
if_ath_alq_setcfg(struct if_ath_alq *alq, uint32_t macVer,
uint32_t macRev, uint32_t phyRev, uint32_t halMagic)
{
/* Store these in network order */
alq->sc_alq_cfg.sc_mac_version = htobe32(macVer);
alq->sc_alq_cfg.sc_mac_revision = htobe32(macRev);
alq->sc_alq_cfg.sc_phy_rev = htobe32(phyRev);
alq->sc_alq_cfg.sc_hal_magic = htobe32(halMagic);
}
void
if_ath_alq_tidyup(struct if_ath_alq *alq)
{
if_ath_alq_stop(alq);
printf("%s (%s): detached\n", __func__, alq->sc_alq_devname);
bzero(alq, sizeof(*alq));
}
int
if_ath_alq_start(struct if_ath_alq *alq)
{
int error;
if (alq->sc_alq_isactive)
return (0);
/*
* Create a variable-length ALQ.
*/
error = alq_open(&alq->sc_alq_alq, alq->sc_alq_filename,
curthread->td_ucred, ALQ_DEFAULT_CMODE,
alq->sc_alq_qsize, 0);
if (error != 0) {
printf("%s (%s): failed, err=%d\n", __func__,
alq->sc_alq_devname, error);
} else {
printf("%s (%s): opened\n", __func__, alq->sc_alq_devname);
alq->sc_alq_isactive = 1;
if_ath_alq_post(alq, ATH_ALQ_INIT_STATE,
sizeof (struct if_ath_alq_init_state),
(char *) &alq->sc_alq_cfg);
}
return (error);
}
int
if_ath_alq_stop(struct if_ath_alq *alq)
{
if (alq->sc_alq_isactive == 0)
return (0);
printf("%s (%s): closed\n", __func__, alq->sc_alq_devname);
alq->sc_alq_isactive = 0;
alq_close(alq->sc_alq_alq);
alq->sc_alq_alq = NULL;
return (0);
}
/*
* Post a debug message to the ALQ.
*
* "len" is the size of the buf payload in bytes.
*/
void
if_ath_alq_post(struct if_ath_alq *alq, uint16_t op, uint16_t len,
const char *buf)
{
struct if_ath_alq_hdr *ap;
struct ale *ale;
struct timeval tv;
if (! if_ath_alq_checkdebug(alq, op))
return;
microtime(&tv);
/*
* Enforce some semblence of sanity on 'len'.
* Although strictly speaking, any length is possible -
* just be conservative so things don't get out of hand.
*/
if (len > ATH_ALQ_PAYLOAD_LEN)
len = ATH_ALQ_PAYLOAD_LEN;
ale = if_ath_alq_get(alq, len + sizeof(struct if_ath_alq_hdr));
if (ale == NULL)
return;
ap = (struct if_ath_alq_hdr *) ale->ae_data;
ap->threadid = htobe64((uint64_t) curthread->td_tid);
ap->tstamp_sec = htobe32((uint32_t) tv.tv_sec);
ap->tstamp_usec = htobe32((uint32_t) tv.tv_usec);
ap->op = htobe16(op);
ap->len = htobe16(len);
/*
* Copy the payload _after_ the header field.
*/
if (buf != NULL) {
memcpy(((char *) ap) + sizeof(struct if_ath_alq_hdr),
buf,
len);
}
alq_post(alq->sc_alq_alq, ale);
}
#endif /* ATH_DEBUG */
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