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
|
// SPDX-License-Identifier: ISC
/*
* Copyright (C) 2019 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
*/
#include "mt76.h"
struct sk_buff *
mt76_mcu_msg_alloc(struct mt76_dev *dev, const void *data,
int data_len)
{
const struct mt76_mcu_ops *ops = dev->mcu_ops;
int length = ops->headroom + data_len + ops->tailroom;
struct sk_buff *skb;
skb = alloc_skb(length, GFP_KERNEL);
if (!skb)
return NULL;
memset(skb->head, 0, length);
skb_reserve(skb, ops->headroom);
if (data && data_len)
skb_put_data(skb, data, data_len);
return skb;
}
EXPORT_SYMBOL_GPL(mt76_mcu_msg_alloc);
struct sk_buff *mt76_mcu_get_response(struct mt76_dev *dev,
unsigned long expires)
{
unsigned long timeout;
if (!time_is_after_jiffies(expires))
return NULL;
timeout = expires - jiffies;
wait_event_timeout(dev->mcu.wait,
(!skb_queue_empty(&dev->mcu.res_q) ||
test_bit(MT76_MCU_RESET, &dev->phy.state)),
timeout);
return skb_dequeue(&dev->mcu.res_q);
}
EXPORT_SYMBOL_GPL(mt76_mcu_get_response);
void mt76_mcu_rx_event(struct mt76_dev *dev, struct sk_buff *skb)
{
skb_queue_tail(&dev->mcu.res_q, skb);
wake_up(&dev->mcu.wait);
}
EXPORT_SYMBOL_GPL(mt76_mcu_rx_event);
int mt76_mcu_send_and_get_msg(struct mt76_dev *dev, int cmd, const void *data,
int len, bool wait_resp, struct sk_buff **ret_skb)
{
struct sk_buff *skb;
if (dev->mcu_ops->mcu_send_msg)
return dev->mcu_ops->mcu_send_msg(dev, cmd, data, len, wait_resp);
skb = mt76_mcu_msg_alloc(dev, data, len);
if (!skb)
return -ENOMEM;
return mt76_mcu_skb_send_and_get_msg(dev, skb, cmd, wait_resp, ret_skb);
}
EXPORT_SYMBOL_GPL(mt76_mcu_send_and_get_msg);
int mt76_mcu_skb_send_and_get_msg(struct mt76_dev *dev, struct sk_buff *skb,
int cmd, bool wait_resp,
struct sk_buff **ret_skb)
{
unsigned long expires;
int ret, seq;
if (ret_skb)
*ret_skb = NULL;
mutex_lock(&dev->mcu.mutex);
ret = dev->mcu_ops->mcu_skb_send_msg(dev, skb, cmd, &seq);
if (ret < 0)
goto out;
if (!wait_resp) {
ret = 0;
goto out;
}
expires = jiffies + dev->mcu.timeout;
do {
skb = mt76_mcu_get_response(dev, expires);
ret = dev->mcu_ops->mcu_parse_response(dev, cmd, skb, seq);
if (!ret && ret_skb)
*ret_skb = skb;
else
dev_kfree_skb(skb);
} while (ret == -EAGAIN);
out:
mutex_unlock(&dev->mcu.mutex);
return ret;
}
EXPORT_SYMBOL_GPL(mt76_mcu_skb_send_and_get_msg);
int mt76_mcu_send_firmware(struct mt76_dev *dev, int cmd, const void *data,
int len)
{
int err, cur_len;
while (len > 0) {
cur_len = min_t(int, 4096 - dev->mcu_ops->headroom, len);
err = mt76_mcu_send_msg(dev, cmd, data, cur_len, false);
if (err)
return err;
data += cur_len;
len -= cur_len;
if (dev->queue_ops->tx_cleanup)
dev->queue_ops->tx_cleanup(dev,
dev->q_mcu[MT_MCUQ_FWDL],
false);
}
return 0;
}
EXPORT_SYMBOL_GPL(mt76_mcu_send_firmware);
|
