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
|
From: Ben Greear <greearb@candelatech.com>
Date: Wed, 31 May 2017 14:21:21 +0300
Subject: [PATCH] ath10k: log when longer bmi cmds happen
This lets one have a clue that maybe timeouts are happening
when we just aren't waiting long enough.
Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
---
--- a/drivers/net/wireless/ath/ath10k/pci.c
+++ b/drivers/net/wireless/ath/ath10k/pci.c
@@ -101,7 +101,8 @@ static int ath10k_pci_init_irq(struct at
static int ath10k_pci_deinit_irq(struct ath10k *ar);
static int ath10k_pci_request_irq(struct ath10k *ar);
static void ath10k_pci_free_irq(struct ath10k *ar);
-static int ath10k_pci_bmi_wait(struct ath10k_ce_pipe *tx_pipe,
+static int ath10k_pci_bmi_wait(struct ath10k *ar,
+ struct ath10k_ce_pipe *tx_pipe,
struct ath10k_ce_pipe *rx_pipe,
struct bmi_xfer *xfer);
static int ath10k_pci_qca99x0_chip_reset(struct ath10k *ar);
@@ -1843,7 +1844,7 @@ int ath10k_pci_hif_exchange_bmi_msg(stru
if (ret)
goto err_resp;
- ret = ath10k_pci_bmi_wait(ce_tx, ce_rx, &xfer);
+ ret = ath10k_pci_bmi_wait(ar, ce_tx, ce_rx, &xfer);
if (ret) {
u32 unused_buffer;
unsigned int unused_nbytes;
@@ -1910,23 +1911,37 @@ static void ath10k_pci_bmi_recv_data(str
xfer->rx_done = true;
}
-static int ath10k_pci_bmi_wait(struct ath10k_ce_pipe *tx_pipe,
+static int ath10k_pci_bmi_wait(struct ath10k *ar,
+ struct ath10k_ce_pipe *tx_pipe,
struct ath10k_ce_pipe *rx_pipe,
struct bmi_xfer *xfer)
{
unsigned long timeout = jiffies + BMI_COMMUNICATION_TIMEOUT_HZ;
+ unsigned long started = jiffies;
+ unsigned long dur;
+ int ret;
while (time_before_eq(jiffies, timeout)) {
ath10k_pci_bmi_send_done(tx_pipe);
ath10k_pci_bmi_recv_data(rx_pipe);
- if (xfer->tx_done && (xfer->rx_done == xfer->wait_for_resp))
- return 0;
+ if (xfer->tx_done && (xfer->rx_done == xfer->wait_for_resp)) {
+ ret = 0;
+ goto out;
+ }
schedule();
}
- return -ETIMEDOUT;
+ ret = -ETIMEDOUT;
+
+out:
+ dur = jiffies - started;
+ if (dur > HZ)
+ ath10k_dbg(ar, ATH10K_DBG_BMI,
+ "bmi cmd took %lu jiffies hz %d ret %d\n",
+ dur, HZ, ret);
+ return ret;
}
/*
|
