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
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
# Copyright 2014-present Facebook. All Rights Reserved.
wedge_iso_buf_enable() {
# GPIOC2 (18) to low, SCU90[0] and SCU90[24] must be 0
devmem_clear_bit $(scu_addr 90) 0
devmem_clear_bit $(scu_addr 90) 24
gpio_set 18 0
}
wedge_iso_buf_disable() {
# GPIOC2 (18) to low, SCU90[0] and SCU90[24] must be 0
devmem_clear_bit $(scu_addr 90) 0
devmem_clear_bit $(scu_addr 90) 24
gpio_set 18 1
}
wedge_is_us_on() {
local val n retries prog
if [ $# -gt 0 ]; then
retries="$1"
else
retries=1
fi
if [ $# -gt 1 ]; then
prog="$2"
else
prog=""
fi
if [ $# -gt 2 ]; then
default=$3 # value 0 means defaul is 'ON'
else
default=1
fi
n=1
while true; do
val=$(cat /sys/class/i2c-adapter/i2c-4/4-0040/gpio_inputs 2>/dev/null)
if [ -n "$val" ]; then
break
fi
n=$((n+1))
if [ $n -gt $retries ]; then
echo -n " failed to read GPIO. "
return $default
break
fi
echo -n "$prog"
sleep 1
done
if [ "$((val & (0x1 << 14)))" != "0" ]; then
# powered on already
return 0
else
return 1
fi
}
# Return the board type, 'LC', 'FC-LEFT', 'FC-RIGHT', or, 'WEDGE'
wedge_board_type() {
local pn
pn=$(/usr/bin/weutil 2> /dev/null | grep -i '^Location on Fabric:')
case "$pn" in
*LEFT*)
echo 'FC-LEFT'
;;
*RIGHT*)
echo 'FC-RIGHT'
;;
*LC*)
echo 'LC'
;;
*)
echo 'WEDGE'
;;
esac
}
# On FC,
# board rev < 2:
# FAB_SLOT_ID (GPIOU0), low == FC0; high == FC1
# else:
# FAB_SLOT_ID (GPIOU6), low == FC0; high == FC1
## On LC, Wedge,
# board rev < 3:
# GPIOU0(ID0), GPIOU1(ID1), GPIOU2(ID2), GPIOU3(ID3)
# else:
# GPIOU6(ID0), GPIOU7(ID1), GPIOV0(ID2), GPIOV1(ID3)
#
# ID[2:0] ID3 Slot#
# 000 0 1
# 000 1 2
# 001 0 3
# 001 1 4
# 010 0 5
# 010 1 6
# 011 0 7
# 011 1 8
wedge_slot_id() {
local type slot id3 id2 id1 id0 FC_CARD_BASE board_rev
FC_CARD_BASE=65
# need to check the board rev
board_rev=$(wedge_board_rev)
case "$1" in
FC-LEFT|FC-RIGHT)
# On FC
if [ $board_rev -lt 2 ]; then
slot=$(gpio_get U0)
else
slot=$(gpio_get U6)
fi
if [ "$1" = "FC-LEFT" ]; then
# fabric card left
slot=$((FC_CARD_BASE + slot * 2))
else
# fabric card right
slot=$((FC_CARD_BASE + slot * 2 + 1))
fi
;;
*)
# either edge or LC
if [ $board_rev -lt 3 ]; then
id0=$(gpio_get U0)
id1=$(gpio_get U1)
id2=$(gpio_get U2)
id3=$(gpio_get U3)
else
id0=$(gpio_get U6)
id1=$(gpio_get U7)
id2=$(gpio_get V0)
id3=$(gpio_get V1)
fi
slot=$(((id2 * 4 + id1 * 2 + id0) * 2 + id3 + 1))
esac
echo "$slot"
}
# wedge_board_rev() is only valid after GPIO Y0, Y1, and Y2 are enabled
wedge_board_rev() {
local val0 val1 val2
val0=$(cat /sys/class/gpio/gpio192/value 2>/dev/null)
val1=$(cat /sys/class/gpio/gpio193/value 2>/dev/null)
val2=$(cat /sys/class/gpio/gpio194/value 2>/dev/null)
echo $((val0 | (val1 << 1) | (val2 << 2)))
}
# Should we enable OOB interface or not
wedge_should_enable_oob() {
board_rev=$(wedge_board_rev)
board_type=$(wedge_board_type)
case "$board_type" in
FC-LEFT|FC-RIGHT)
if [ $board_rev -lt 2 ]; then
return 0
fi
;;
*)
if [ $board_rev -lt 3 ]; then
return 0
fi
;;
esac
return -1
}
|
