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
|
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -1447,6 +1447,50 @@ static const struct file_operations fops
#endif
+static ssize_t read_file_diag(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ath_softc *sc = file->private_data;
+ struct ath_hw *ah = sc->sc_ah;
+ char buf[32];
+ unsigned int len;
+
+ len = sprintf(buf, "0x%08lx\n", ah->diag);
+ return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t write_file_diag(struct file *file, const char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ath_softc *sc = file->private_data;
+ struct ath_hw *ah = sc->sc_ah;
+ unsigned long diag;
+ char buf[32];
+ ssize_t len;
+
+ len = min(count, sizeof(buf) - 1);
+ if (copy_from_user(buf, user_buf, len))
+ return -EFAULT;
+
+ buf[len] = '\0';
+ if (kstrtoul(buf, 0, &diag))
+ return -EINVAL;
+
+ ah->diag = diag;
+ ath9k_hw_update_diag(ah);
+
+ return count;
+}
+
+static const struct file_operations fops_diag = {
+ .read = read_file_diag,
+ .write = write_file_diag,
+ .open = simple_open,
+ .owner = THIS_MODULE,
+ .llseek = default_llseek,
+};
+
+
int ath9k_init_debug(struct ath_hw *ah)
{
struct ath_common *common = ath9k_hw_common(ah);
@@ -1474,6 +1518,8 @@ int ath9k_init_debug(struct ath_hw *ah)
debugfs_create_file("gpio_led", S_IWUSR,
sc->debug.debugfs_phy, sc, &fops_gpio_led);
#endif
+ debugfs_create_file("diag", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
+ sc, &fops_diag);
debugfs_create_devm_seqfile(sc->dev, "dma", sc->debug.debugfs_phy,
read_file_dma);
debugfs_create_devm_seqfile(sc->dev, "interrupt", sc->debug.debugfs_phy,
--- a/drivers/net/wireless/ath/ath9k/hw.h
+++ b/drivers/net/wireless/ath/ath9k/hw.h
@@ -513,6 +513,12 @@ enum {
ATH9K_RESET_COLD,
};
+enum {
+ ATH_DIAG_DISABLE_RX,
+ ATH_DIAG_DISABLE_TX,
+ ATH_DIAG_TRIGGER_ERROR,
+};
+
struct ath9k_hw_version {
u32 magic;
u16 devid;
@@ -794,6 +800,8 @@ struct ath_hw {
u32 rfkill_polarity;
u32 ah_flags;
+ unsigned long diag;
+
bool reset_power_on;
bool htc_reset_init;
@@ -1055,6 +1063,7 @@ void ath9k_hw_check_nav(struct ath_hw *a
bool ath9k_hw_check_alive(struct ath_hw *ah);
bool ath9k_hw_setpower(struct ath_hw *ah, enum ath9k_power_mode mode);
+void ath9k_hw_update_diag(struct ath_hw *ah);
/* Generic hw timer primitives */
struct ath_gen_timer *ath_gen_timer_alloc(struct ath_hw *ah,
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -1804,6 +1804,20 @@ u32 ath9k_hw_get_tsf_offset(struct times
}
EXPORT_SYMBOL(ath9k_hw_get_tsf_offset);
+void ath9k_hw_update_diag(struct ath_hw *ah)
+{
+ if (test_bit(ATH_DIAG_DISABLE_RX, &ah->diag))
+ REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_RX_DIS);
+ else
+ REG_CLR_BIT(ah, AR_DIAG_SW, AR_DIAG_RX_DIS);
+
+ if (test_bit(ATH_DIAG_DISABLE_TX, &ah->diag))
+ REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_LOOP_BACK);
+ else
+ REG_CLR_BIT(ah, AR_DIAG_SW, AR_DIAG_LOOP_BACK);
+}
+EXPORT_SYMBOL(ath9k_hw_update_diag);
+
int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
struct ath9k_hw_cal_data *caldata, bool fastcc)
{
@@ -2012,6 +2026,7 @@ int ath9k_hw_reset(struct ath_hw *ah, st
ar9003_hw_disable_phy_restart(ah);
ath9k_hw_apply_gpio_override(ah);
+ ath9k_hw_update_diag(ah);
if (AR_SREV_9565(ah) && common->bt_ant_diversity)
REG_SET_BIT(ah, AR_BTCOEX_WL_LNADIV, AR_BTCOEX_WL_LNADIV_FORCE_ON);
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -533,6 +533,11 @@ irqreturn_t ath_isr(int irq, void *dev)
if (test_bit(ATH_OP_HW_RESET, &common->op_flags))
return IRQ_HANDLED;
+ if (test_bit(ATH_DIAG_TRIGGER_ERROR, &ah->diag)) {
+ status |= ATH9K_INT_FATAL;
+ clear_bit(ATH_DIAG_TRIGGER_ERROR, &ah->diag);
+ }
+
/*
* If there are no status bits set, then this interrupt was not
* for me (should have been caught above).
|
