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
164
165
166
167
168
169
170
171
172
173
174
|
// SPDX-License-Identifier: ISC
/*
* Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
*/
#include <linux/kernel.h>
#include <linux/firmware.h>
#include <linux/module.h>
#include "mt76x0.h"
#include "mcu.h"
#include "../mt76x02_usb.h"
#define MCU_FW_URB_MAX_PAYLOAD 0x38f8
#define MCU_FW_URB_SIZE (MCU_FW_URB_MAX_PAYLOAD + 12)
static int
mt76x0u_upload_firmware(struct mt76x02_dev *dev,
const struct mt76x02_fw_header *hdr)
{
u8 *fw_payload = (u8 *)(hdr + 1);
u32 ilm_len, dlm_len;
void *ivb;
int err;
ivb = kmemdup(fw_payload, MT_MCU_IVB_SIZE, GFP_KERNEL);
if (!ivb)
return -ENOMEM;
ilm_len = le32_to_cpu(hdr->ilm_len) - MT_MCU_IVB_SIZE;
dev_dbg(dev->mt76.dev, "loading FW - ILM %u + IVB %u\n",
ilm_len, MT_MCU_IVB_SIZE);
err = mt76x02u_mcu_fw_send_data(dev, fw_payload + MT_MCU_IVB_SIZE,
ilm_len, MCU_FW_URB_MAX_PAYLOAD,
MT_MCU_IVB_SIZE);
if (err)
goto out;
dlm_len = le32_to_cpu(hdr->dlm_len);
dev_dbg(dev->mt76.dev, "loading FW - DLM %u\n", dlm_len);
err = mt76x02u_mcu_fw_send_data(dev,
fw_payload + le32_to_cpu(hdr->ilm_len),
dlm_len, MCU_FW_URB_MAX_PAYLOAD,
MT_MCU_DLM_OFFSET);
if (err)
goto out;
err = mt76u_vendor_request(&dev->mt76, MT_VEND_DEV_MODE,
USB_DIR_OUT | USB_TYPE_VENDOR,
0x12, 0, ivb, MT_MCU_IVB_SIZE);
if (err < 0)
goto out;
if (!mt76_poll_msec(dev, MT_MCU_COM_REG0, 1, 1, 1000)) {
dev_err(dev->mt76.dev, "Firmware failed to start\n");
err = -ETIMEDOUT;
goto out;
}
dev_dbg(dev->mt76.dev, "Firmware running!\n");
out:
kfree(ivb);
return err;
}
static int mt76x0_get_firmware(struct mt76x02_dev *dev,
const struct firmware **fw)
{
int err;
/* try to load mt7610e fw if available
* otherwise fall back to mt7610u one
*/
err = firmware_request_nowarn(fw, MT7610E_FIRMWARE, dev->mt76.dev);
if (err) {
dev_info(dev->mt76.dev, "%s not found, switching to %s",
MT7610E_FIRMWARE, MT7610U_FIRMWARE);
return request_firmware(fw, MT7610U_FIRMWARE,
dev->mt76.dev);
}
return 0;
}
static int mt76x0u_load_firmware(struct mt76x02_dev *dev)
{
const struct firmware *fw;
const struct mt76x02_fw_header *hdr;
int len, ret;
u32 val;
mt76_wr(dev, MT_USB_DMA_CFG, (MT_USB_DMA_CFG_RX_BULK_EN |
MT_USB_DMA_CFG_TX_BULK_EN));
if (mt76x0_firmware_running(dev))
return 0;
ret = mt76x0_get_firmware(dev, &fw);
if (ret)
return ret;
if (!fw || !fw->data || fw->size < sizeof(*hdr))
goto err_inv_fw;
hdr = (const struct mt76x02_fw_header *)fw->data;
if (le32_to_cpu(hdr->ilm_len) <= MT_MCU_IVB_SIZE)
goto err_inv_fw;
len = sizeof(*hdr);
len += le32_to_cpu(hdr->ilm_len);
len += le32_to_cpu(hdr->dlm_len);
if (fw->size != len)
goto err_inv_fw;
val = le16_to_cpu(hdr->fw_ver);
dev_dbg(dev->mt76.dev,
"Firmware Version: %d.%d.%02d Build: %x Build time: %.16s\n",
(val >> 12) & 0xf, (val >> 8) & 0xf, val & 0xf,
le16_to_cpu(hdr->build_ver), hdr->build_time);
len = le32_to_cpu(hdr->ilm_len);
mt76_wr(dev, 0x1004, 0x2c);
mt76_set(dev, MT_USB_DMA_CFG,
(MT_USB_DMA_CFG_RX_BULK_EN | MT_USB_DMA_CFG_TX_BULK_EN) |
FIELD_PREP(MT_USB_DMA_CFG_RX_BULK_AGG_TOUT, 0x20));
mt76x02u_mcu_fw_reset(dev);
usleep_range(5000, 6000);
mt76_wr(dev, MT_FCE_PSE_CTRL, 1);
/* FCE tx_fs_base_ptr */
mt76_wr(dev, MT_TX_CPU_FROM_FCE_BASE_PTR, 0x400230);
/* FCE tx_fs_max_cnt */
mt76_wr(dev, MT_TX_CPU_FROM_FCE_MAX_COUNT, 1);
/* FCE pdma enable */
mt76_wr(dev, MT_FCE_PDMA_GLOBAL_CONF, 0x44);
/* FCE skip_fs_en */
mt76_wr(dev, MT_FCE_SKIP_FS, 3);
val = mt76_rr(dev, MT_USB_DMA_CFG);
val |= MT_USB_DMA_CFG_UDMA_TX_WL_DROP;
mt76_wr(dev, MT_USB_DMA_CFG, val);
val &= ~MT_USB_DMA_CFG_UDMA_TX_WL_DROP;
mt76_wr(dev, MT_USB_DMA_CFG, val);
ret = mt76x0u_upload_firmware(dev, hdr);
release_firmware(fw);
mt76_wr(dev, MT_FCE_PSE_CTRL, 1);
return ret;
err_inv_fw:
dev_err(dev->mt76.dev, "Invalid firmware image\n");
release_firmware(fw);
return -ENOENT;
}
int mt76x0u_mcu_init(struct mt76x02_dev *dev)
{
int ret;
ret = mt76x0u_load_firmware(dev);
if (ret < 0)
return ret;
set_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state);
return 0;
}
|
