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7#include <linux/kernel.h>
8#include <linux/firmware.h>
9#include <linux/delay.h>
10
11#include "mt76x02_mcu.h"
12
13int mt76x02_mcu_msg_send(struct mt76_dev *mdev, int cmd, const void *data,
14 int len, bool wait_resp)
15{
16 struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
17 unsigned long expires = jiffies + HZ;
18 struct sk_buff *skb;
19 u32 tx_info;
20 int ret;
21 u8 seq;
22
23 if (dev->mcu_timeout)
24 return -EIO;
25
26 skb = mt76_mcu_msg_alloc(mdev, data, len);
27 if (!skb)
28 return -ENOMEM;
29
30 mutex_lock(&mdev->mcu.mutex);
31
32 seq = ++mdev->mcu.msg_seq & 0xf;
33 if (!seq)
34 seq = ++mdev->mcu.msg_seq & 0xf;
35
36 tx_info = MT_MCU_MSG_TYPE_CMD |
37 FIELD_PREP(MT_MCU_MSG_CMD_TYPE, cmd) |
38 FIELD_PREP(MT_MCU_MSG_CMD_SEQ, seq) |
39 FIELD_PREP(MT_MCU_MSG_PORT, CPU_TX_PORT) |
40 FIELD_PREP(MT_MCU_MSG_LEN, skb->len);
41
42 ret = mt76_tx_queue_skb_raw(dev, MT_TXQ_MCU, skb, tx_info);
43 if (ret)
44 goto out;
45
46 while (wait_resp) {
47 u32 *rxfce;
48 bool check_seq = false;
49
50 skb = mt76_mcu_get_response(&dev->mt76, expires);
51 if (!skb) {
52 dev_err(mdev->dev,
53 "MCU message %d (seq %d) timed out\n", cmd,
54 seq);
55 ret = -ETIMEDOUT;
56 dev->mcu_timeout = 1;
57 break;
58 }
59
60 rxfce = (u32 *)skb->cb;
61
62 if (seq == FIELD_GET(MT_RX_FCE_INFO_CMD_SEQ, *rxfce))
63 check_seq = true;
64
65 dev_kfree_skb(skb);
66 if (check_seq)
67 break;
68 }
69
70out:
71 mutex_unlock(&mdev->mcu.mutex);
72
73 return ret;
74}
75EXPORT_SYMBOL_GPL(mt76x02_mcu_msg_send);
76
77int mt76x02_mcu_function_select(struct mt76x02_dev *dev, enum mcu_function func,
78 u32 val)
79{
80 struct {
81 __le32 id;
82 __le32 value;
83 } __packed __aligned(4) msg = {
84 .id = cpu_to_le32(func),
85 .value = cpu_to_le32(val),
86 };
87 bool wait = false;
88
89 if (func != Q_SELECT)
90 wait = true;
91
92 return mt76_mcu_send_msg(dev, CMD_FUN_SET_OP, &msg, sizeof(msg), wait);
93}
94EXPORT_SYMBOL_GPL(mt76x02_mcu_function_select);
95
96int mt76x02_mcu_set_radio_state(struct mt76x02_dev *dev, bool on)
97{
98 struct {
99 __le32 mode;
100 __le32 level;
101 } __packed __aligned(4) msg = {
102 .mode = cpu_to_le32(on ? RADIO_ON : RADIO_OFF),
103 .level = cpu_to_le32(0),
104 };
105
106 return mt76_mcu_send_msg(dev, CMD_POWER_SAVING_OP, &msg, sizeof(msg),
107 false);
108}
109EXPORT_SYMBOL_GPL(mt76x02_mcu_set_radio_state);
110
111int mt76x02_mcu_calibrate(struct mt76x02_dev *dev, int type, u32 param)
112{
113 struct {
114 __le32 id;
115 __le32 value;
116 } __packed __aligned(4) msg = {
117 .id = cpu_to_le32(type),
118 .value = cpu_to_le32(param),
119 };
120 bool is_mt76x2e = mt76_is_mmio(&dev->mt76) && is_mt76x2(dev);
121 int ret;
122
123 if (is_mt76x2e)
124 mt76_rmw(dev, MT_MCU_COM_REG0, BIT(31), 0);
125
126 ret = mt76_mcu_send_msg(dev, CMD_CALIBRATION_OP, &msg, sizeof(msg),
127 true);
128 if (ret)
129 return ret;
130
131 if (is_mt76x2e &&
132 WARN_ON(!mt76_poll_msec(dev, MT_MCU_COM_REG0,
133 BIT(31), BIT(31), 100)))
134 return -ETIMEDOUT;
135
136 return 0;
137}
138EXPORT_SYMBOL_GPL(mt76x02_mcu_calibrate);
139
140int mt76x02_mcu_cleanup(struct mt76x02_dev *dev)
141{
142 struct sk_buff *skb;
143
144 mt76_wr(dev, MT_MCU_INT_LEVEL, 1);
145 usleep_range(20000, 30000);
146
147 while ((skb = skb_dequeue(&dev->mt76.mcu.res_q)) != NULL)
148 dev_kfree_skb(skb);
149
150 return 0;
151}
152EXPORT_SYMBOL_GPL(mt76x02_mcu_cleanup);
153
154void mt76x02_set_ethtool_fwver(struct mt76x02_dev *dev,
155 const struct mt76x02_fw_header *h)
156{
157 u16 bld = le16_to_cpu(h->build_ver);
158 u16 ver = le16_to_cpu(h->fw_ver);
159
160 snprintf(dev->mt76.hw->wiphy->fw_version,
161 sizeof(dev->mt76.hw->wiphy->fw_version),
162 "%d.%d.%02d-b%x",
163 (ver >> 12) & 0xf, (ver >> 8) & 0xf, ver & 0xf, bld);
164}
165EXPORT_SYMBOL_GPL(mt76x02_set_ethtool_fwver);
166
