cf18d4def2
Provide C-level interface for Arkville's internal HW resources DDM (Downstream Data Mover) and UDM (Upstream Data Mover) modules Signed-off-by: Ed Czeck <ed.czeck@atomicrules.com>
152 lines
3.8 KiB
C
152 lines
3.8 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (c) 2015-2017 Atomic Rules LLC
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <unistd.h>
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#include "ark_logs.h"
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#include "ark_ddm.h"
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/* ************************************************************************* */
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int
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ark_ddm_verify(struct ark_ddm_t *ddm)
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{
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if (sizeof(struct ark_ddm_t) != ARK_DDM_EXPECTED_SIZE) {
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PMD_DRV_LOG(ERR, "ARK: DDM structure looks incorrect %d vs %zd\n",
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ARK_DDM_EXPECTED_SIZE, sizeof(struct ark_ddm_t));
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return -1;
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}
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if (ddm->cfg.const0 != ARK_DDM_CONST) {
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PMD_DRV_LOG(ERR, "ARK: DDM module not found as expected 0x%08x\n",
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ddm->cfg.const0);
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return -1;
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}
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return 0;
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}
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void
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ark_ddm_start(struct ark_ddm_t *ddm)
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{
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ddm->cfg.command = 1;
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}
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int
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ark_ddm_stop(struct ark_ddm_t *ddm, const int wait)
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{
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int cnt = 0;
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ddm->cfg.command = 2;
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while (wait && (ddm->cfg.stop_flushed & 0x01) == 0) {
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if (cnt++ > 1000)
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return 1;
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usleep(10);
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}
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return 0;
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}
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void
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ark_ddm_reset(struct ark_ddm_t *ddm)
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{
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int status;
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/* reset only works if ddm has stopped properly. */
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status = ark_ddm_stop(ddm, 1);
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if (status != 0) {
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PMD_DEBUG_LOG(INFO, "%s stop failed doing forced reset\n",
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__func__);
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ddm->cfg.command = 4;
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usleep(10);
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}
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ddm->cfg.command = 3;
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}
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void
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ark_ddm_setup(struct ark_ddm_t *ddm, phys_addr_t cons_addr, uint32_t interval)
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{
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ddm->setup.cons_write_index_addr = cons_addr;
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ddm->setup.write_index_interval = interval / 4; /* 4 ns period */
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}
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void
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ark_ddm_stats_reset(struct ark_ddm_t *ddm)
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{
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ddm->cfg.tlp_stats_clear = 1;
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}
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void
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ark_ddm_dump(struct ark_ddm_t *ddm, const char *msg)
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{
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PMD_FUNC_LOG(DEBUG, "%s Stopped: %d\n", msg,
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ark_ddm_is_stopped(ddm)
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);
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}
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void
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ark_ddm_dump_stats(struct ark_ddm_t *ddm, const char *msg)
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{
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struct ark_ddm_stats_t *stats = &ddm->stats;
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PMD_STATS_LOG(INFO, "DDM Stats: %s"
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ARK_SU64 ARK_SU64 ARK_SU64
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"\n", msg,
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"Bytes:", stats->tx_byte_count,
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"Packets:", stats->tx_pkt_count,
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"MBufs", stats->tx_mbuf_count);
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}
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int
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ark_ddm_is_stopped(struct ark_ddm_t *ddm)
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{
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return (ddm->cfg.stop_flushed & 0x01) != 0;
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}
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uint64_t
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ark_ddm_queue_byte_count(struct ark_ddm_t *ddm)
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{
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return ddm->queue_stats.byte_count;
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}
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uint64_t
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ark_ddm_queue_pkt_count(struct ark_ddm_t *ddm)
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{
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return ddm->queue_stats.pkt_count;
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}
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void
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ark_ddm_queue_reset_stats(struct ark_ddm_t *ddm)
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{
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ddm->queue_stats.byte_count = 1;
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}
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