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/*-
* BSD LICENSE
*
* Copyright (c) 2015-2017 Atomic Rules LLC
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of copyright holder nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 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.
*/
#include <unistd.h>
#include "ark_logs.h"
#include "ark_ddm.h"
/* ************************************************************************* */
int
ark_ddm_verify(struct ark_ddm_t *ddm)
{
if (sizeof(struct ark_ddm_t) != ARK_DDM_EXPECTED_SIZE) {
PMD_DRV_LOG(ERR, "ARK: DDM structure looks incorrect %d vs %zd\n",
ARK_DDM_EXPECTED_SIZE, sizeof(struct ark_ddm_t));
return -1;
}
if (ddm->cfg.const0 != ARK_DDM_CONST) {
PMD_DRV_LOG(ERR, "ARK: DDM module not found as expected 0x%08x\n",
ddm->cfg.const0);
return -1;
}
return 0;
}
void
ark_ddm_start(struct ark_ddm_t *ddm)
{
ddm->cfg.command = 1;
}
int
ark_ddm_stop(struct ark_ddm_t *ddm, const int wait)
{
int cnt = 0;
ddm->cfg.command = 2;
while (wait && (ddm->cfg.stop_flushed & 0x01) == 0) {
if (cnt++ > 1000)
return 1;
usleep(10);
}
return 0;
}
void
ark_ddm_reset(struct ark_ddm_t *ddm)
{
int status;
/* reset only works if ddm has stopped properly. */
status = ark_ddm_stop(ddm, 1);
if (status != 0) {
PMD_DEBUG_LOG(INFO, "%s stop failed doing forced reset\n",
__func__);
ddm->cfg.command = 4;
usleep(10);
}
ddm->cfg.command = 3;
}
void
ark_ddm_setup(struct ark_ddm_t *ddm, rte_iova_t cons_addr, uint32_t interval)
{
ddm->setup.cons_write_index_addr = cons_addr;
ddm->setup.write_index_interval = interval / 4; /* 4 ns period */
}
void
ark_ddm_stats_reset(struct ark_ddm_t *ddm)
{
ddm->cfg.tlp_stats_clear = 1;
}
void
ark_ddm_dump(struct ark_ddm_t *ddm, const char *msg)
{
PMD_FUNC_LOG(DEBUG, "%s Stopped: %d\n", msg,
ark_ddm_is_stopped(ddm)
);
}
void
ark_ddm_dump_stats(struct ark_ddm_t *ddm, const char *msg)
{
struct ark_ddm_stats_t *stats = &ddm->stats;
PMD_STATS_LOG(INFO, "DDM Stats: %s"
ARK_SU64 ARK_SU64 ARK_SU64
"\n", msg,
"Bytes:", stats->tx_byte_count,
"Packets:", stats->tx_pkt_count,
"MBufs", stats->tx_mbuf_count);
}
int
ark_ddm_is_stopped(struct ark_ddm_t *ddm)
{
return (ddm->cfg.stop_flushed & 0x01) != 0;
}
uint64_t
ark_ddm_queue_byte_count(struct ark_ddm_t *ddm)
{
return ddm->queue_stats.byte_count;
}
uint64_t
ark_ddm_queue_pkt_count(struct ark_ddm_t *ddm)
{
return ddm->queue_stats.pkt_count;
}
void
ark_ddm_queue_reset_stats(struct ark_ddm_t *ddm)
{
ddm->queue_stats.byte_count = 1;
}
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