summaryrefslogtreecommitdiffstats
path: root/drivers/net/ark/ark_ddm.c
blob: 57026f8d12b20ef4cba016cf57ee2653f3c4f066 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright (c) 2015-2018 Atomic Rules LLC
 */

#include <unistd.h>

#include "ark_logs.h"
#include "ark_ddm.h"

/* ************************************************************************* */
int
ark_ddm_verify(struct ark_ddm_t *ddm)
{
	uint32_t hw_const;
	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;
	}

	hw_const = ddm->cfg.const0;
	if (hw_const == ARK_DDM_CONST1) {
		PMD_DRV_LOG(ERR,
			    "ARK: DDM module is version 1, "
			    "PMD expects version 2\n");
		return -1;
	} else if (hw_const != ARK_DDM_CONST2) {
		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;
}