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
175
176
177
178
179
180
181
182
183
|
// SPDX-License-Identifier: ISC
/*
* Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
#include "mt76x2.h"
static const struct pci_device_id mt76x2e_device_table[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7662) },
{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7612) },
{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7602) },
{ },
};
static int
mt76x2e_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
static const struct mt76_driver_ops drv_ops = {
.txwi_size = sizeof(struct mt76x02_txwi),
.drv_flags = MT_DRV_TX_ALIGNED4_SKBS |
MT_DRV_SW_RX_AIRTIME,
.survey_flags = SURVEY_INFO_TIME_TX,
.update_survey = mt76x02_update_channel,
.set_channel = mt76x2e_set_channel,
.tx_prepare_skb = mt76x02_tx_prepare_skb,
.tx_complete_skb = mt76x02_tx_complete_skb,
.rx_skb = mt76x02_queue_rx_skb,
.rx_poll_complete = mt76x02_rx_poll_complete,
.sta_ps = mt76x02_sta_ps,
.sta_add = mt76x02_sta_add,
.sta_remove = mt76x02_sta_remove,
};
struct mt76x02_dev *dev;
struct mt76_dev *mdev;
int ret;
ret = pcim_enable_device(pdev);
if (ret)
return ret;
ret = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev));
if (ret)
return ret;
pci_set_master(pdev);
ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
if (ret)
return ret;
mdev = mt76_alloc_device(&pdev->dev, sizeof(*dev), &mt76x2_ops,
&drv_ops);
if (!mdev)
return -ENOMEM;
dev = container_of(mdev, struct mt76x02_dev, mt76);
mt76_mmio_init(mdev, pcim_iomap_table(pdev)[0]);
mt76x2_reset_wlan(dev, false);
mdev->rev = mt76_rr(dev, MT_ASIC_VERSION);
dev_info(mdev->dev, "ASIC revision: %08x\n", mdev->rev);
mt76_wr(dev, MT_INT_MASK_CSR, 0);
ret = devm_request_irq(mdev->dev, pdev->irq, mt76x02_irq_handler,
IRQF_SHARED, KBUILD_MODNAME, dev);
if (ret)
goto error;
ret = mt76x2_register_device(dev);
if (ret)
goto error;
/* Fix up ASPM configuration */
/* RG_SSUSB_G1_CDR_BIR_LTR = 0x9 */
mt76_rmw_field(dev, 0x15a10, 0x1f << 16, 0x9);
/* RG_SSUSB_G1_CDR_BIC_LTR = 0xf */
mt76_rmw_field(dev, 0x15a0c, 0xfU << 28, 0xf);
/* RG_SSUSB_CDR_BR_PE1D = 0x3 */
mt76_rmw_field(dev, 0x15c58, 0x3 << 6, 0x3);
mt76_pci_disable_aspm(pdev);
return 0;
error:
mt76_free_device(&dev->mt76);
return ret;
}
static void
mt76x2e_remove(struct pci_dev *pdev)
{
struct mt76_dev *mdev = pci_get_drvdata(pdev);
struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
mt76_unregister_device(mdev);
mt76x2_cleanup(dev);
mt76_free_device(mdev);
}
static int __maybe_unused
mt76x2e_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct mt76_dev *mdev = pci_get_drvdata(pdev);
int i, err;
napi_disable(&mdev->tx_napi);
tasklet_kill(&mdev->pre_tbtt_tasklet);
mt76_worker_disable(&mdev->tx_worker);
mt76_for_each_q_rx(mdev, i)
napi_disable(&mdev->napi[i]);
pci_enable_wake(pdev, pci_choose_state(pdev, state), true);
pci_save_state(pdev);
err = pci_set_power_state(pdev, pci_choose_state(pdev, state));
if (err)
goto restore;
return 0;
restore:
mt76_for_each_q_rx(mdev, i)
napi_enable(&mdev->napi[i]);
napi_enable(&mdev->tx_napi);
return err;
}
static int __maybe_unused
mt76x2e_resume(struct pci_dev *pdev)
{
struct mt76_dev *mdev = pci_get_drvdata(pdev);
struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
int i, err;
err = pci_set_power_state(pdev, PCI_D0);
if (err)
return err;
pci_restore_state(pdev);
mt76_worker_enable(&mdev->tx_worker);
local_bh_disable();
mt76_for_each_q_rx(mdev, i) {
napi_enable(&mdev->napi[i]);
napi_schedule(&mdev->napi[i]);
}
napi_enable(&mdev->tx_napi);
napi_schedule(&mdev->tx_napi);
local_bh_enable();
return mt76x2_resume_device(dev);
}
MODULE_DEVICE_TABLE(pci, mt76x2e_device_table);
MODULE_FIRMWARE(MT7662_FIRMWARE);
MODULE_FIRMWARE(MT7662_ROM_PATCH);
MODULE_DESCRIPTION("MediaTek MT76x2E (PCIe) wireless driver");
MODULE_LICENSE("Dual BSD/GPL");
static struct pci_driver mt76pci_driver = {
.name = KBUILD_MODNAME,
.id_table = mt76x2e_device_table,
.probe = mt76x2e_probe,
.remove = mt76x2e_remove,
#ifdef CONFIG_PM
.suspend = mt76x2e_suspend,
.resume = mt76x2e_resume,
#endif /* CONFIG_PM */
};
module_pci_driver(mt76pci_driver);
|