b4b68e7508
Add memory write barriers for read and wait status functions in ddm, udm and mpu. Signed-off-by: John Miller <john.miller@atomicrules.com>
142 lines
2.8 KiB
C
142 lines
2.8 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright (c) 2015-2018 Atomic Rules LLC
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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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static_assert(sizeof(union ark_tx_meta) == 8, "Unexpected struct size ark_tx_meta");
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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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uint32_t hw_const;
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if (sizeof(struct ark_ddm_t) != ARK_DDM_EXPECTED_SIZE) {
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ARK_PMD_LOG(ERR, "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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hw_const = ddm->cfg.const0;
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if (hw_const == ARK_DDM_CONST3)
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return 0;
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if (hw_const == ARK_DDM_CONST1) {
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ARK_PMD_LOG(ERR,
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"ARK: DDM module is version 1, "
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"PMD expects version 2\n");
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return -1;
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}
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if (hw_const == ARK_DDM_CONST2) {
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ARK_PMD_LOG(ERR,
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"ARK: DDM module is version 2, "
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"PMD expects version 3\n");
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return -1;
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}
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ARK_PMD_LOG(ERR,
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"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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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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rte_wmb();
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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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ARK_PMD_LOG(NOTICE, "%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, rte_iova_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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ARK_PMD_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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ARK_PMD_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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