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
|
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/* Copyright (c) 2018 Mellanox Technologies. All rights reserved */
#include <linux/kernel.h>
#include <linux/err.h>
#include "core.h"
#include "core_env.h"
#include "item.h"
#include "reg.h"
static int mlxsw_env_validate_cable_ident(struct mlxsw_core *core, int id,
bool *qsfp)
{
char eeprom_tmp[MLXSW_REG_MCIA_EEPROM_SIZE];
char mcia_pl[MLXSW_REG_MCIA_LEN];
u8 ident;
int err;
mlxsw_reg_mcia_pack(mcia_pl, id, 0, MLXSW_REG_MCIA_PAGE0_LO_OFF, 0, 1,
MLXSW_REG_MCIA_I2C_ADDR_LOW);
err = mlxsw_reg_query(core, MLXSW_REG(mcia), mcia_pl);
if (err)
return err;
mlxsw_reg_mcia_eeprom_memcpy_from(mcia_pl, eeprom_tmp);
ident = eeprom_tmp[0];
switch (ident) {
case MLXSW_REG_MCIA_EEPROM_MODULE_INFO_ID_SFP:
*qsfp = false;
break;
case MLXSW_REG_MCIA_EEPROM_MODULE_INFO_ID_QSFP: /* fall-through */
case MLXSW_REG_MCIA_EEPROM_MODULE_INFO_ID_QSFP_PLUS: /* fall-through */
case MLXSW_REG_MCIA_EEPROM_MODULE_INFO_ID_QSFP28: /* fall-through */
case MLXSW_REG_MCIA_EEPROM_MODULE_INFO_ID_QSFP_DD:
*qsfp = true;
break;
default:
return -EINVAL;
}
return 0;
}
int mlxsw_env_module_temp_thresholds_get(struct mlxsw_core *core, int module,
int off, int *temp)
{
char eeprom_tmp[MLXSW_REG_MCIA_EEPROM_SIZE];
union {
u8 buf[MLXSW_REG_MCIA_TH_ITEM_SIZE];
u16 temp;
} temp_thresh;
char mcia_pl[MLXSW_REG_MCIA_LEN] = {0};
char mtbr_pl[MLXSW_REG_MTBR_LEN] = {0};
u16 module_temp;
bool qsfp;
int err;
mlxsw_reg_mtbr_pack(mtbr_pl, MLXSW_REG_MTBR_BASE_MODULE_INDEX + module,
1);
err = mlxsw_reg_query(core, MLXSW_REG(mtbr), mtbr_pl);
if (err)
return err;
/* Don't read temperature thresholds for module with no valid info. */
mlxsw_reg_mtbr_temp_unpack(mtbr_pl, 0, &module_temp, NULL);
switch (module_temp) {
case MLXSW_REG_MTBR_BAD_SENS_INFO: /* fall-through */
case MLXSW_REG_MTBR_NO_CONN: /* fall-through */
case MLXSW_REG_MTBR_NO_TEMP_SENS: /* fall-through */
case MLXSW_REG_MTBR_INDEX_NA:
*temp = 0;
return 0;
default:
/* Do not consider thresholds for zero temperature. */
if (!MLXSW_REG_MTMP_TEMP_TO_MC(module_temp)) {
*temp = 0;
return 0;
}
break;
}
/* Read Free Side Device Temperature Thresholds from page 03h
* (MSB at lower byte address).
* Bytes:
* 128-129 - Temp High Alarm (SFP_TEMP_HIGH_ALARM);
* 130-131 - Temp Low Alarm (SFP_TEMP_LOW_ALARM);
* 132-133 - Temp High Warning (SFP_TEMP_HIGH_WARN);
* 134-135 - Temp Low Warning (SFP_TEMP_LOW_WARN);
*/
/* Validate module identifier value. */
err = mlxsw_env_validate_cable_ident(core, module, &qsfp);
if (err)
return err;
if (qsfp)
mlxsw_reg_mcia_pack(mcia_pl, module, 0,
MLXSW_REG_MCIA_TH_PAGE_NUM,
MLXSW_REG_MCIA_TH_PAGE_OFF + off,
MLXSW_REG_MCIA_TH_ITEM_SIZE,
MLXSW_REG_MCIA_I2C_ADDR_LOW);
else
mlxsw_reg_mcia_pack(mcia_pl, module, 0,
MLXSW_REG_MCIA_PAGE0_LO,
off, MLXSW_REG_MCIA_TH_ITEM_SIZE,
MLXSW_REG_MCIA_I2C_ADDR_HIGH);
err = mlxsw_reg_query(core, MLXSW_REG(mcia), mcia_pl);
if (err)
return err;
mlxsw_reg_mcia_eeprom_memcpy_from(mcia_pl, eeprom_tmp);
memcpy(temp_thresh.buf, eeprom_tmp, MLXSW_REG_MCIA_TH_ITEM_SIZE);
*temp = temp_thresh.temp * 1000;
return 0;
}
|
