1 // SPDX-License-Identifier: ISC
2 /*
3 * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
4 */
5
6 #include <linux/kernel.h>
7 #include <linux/module.h>
8 #include <linux/pci.h>
9
10 #include "mt76x2.h"
11
12 static const struct pci_device_id mt76x2e_device_table[] = {
13 { PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7662) },
14 { PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7612) },
15 { PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7602) },
16 { },
17 };
18
19 static int
mt76x2e_probe(struct pci_dev * pdev,const struct pci_device_id * id)20 mt76x2e_probe(struct pci_dev *pdev, const struct pci_device_id *id)
21 {
22 static const struct mt76_driver_ops drv_ops = {
23 .txwi_size = sizeof(struct mt76x02_txwi),
24 .drv_flags = MT_DRV_TX_ALIGNED4_SKBS |
25 MT_DRV_SW_RX_AIRTIME,
26 .survey_flags = SURVEY_INFO_TIME_TX,
27 .update_survey = mt76x02_update_channel,
28 .tx_prepare_skb = mt76x02_tx_prepare_skb,
29 .tx_complete_skb = mt76x02_tx_complete_skb,
30 .rx_skb = mt76x02_queue_rx_skb,
31 .rx_poll_complete = mt76x02_rx_poll_complete,
32 .sta_ps = mt76x02_sta_ps,
33 .sta_add = mt76x02_sta_add,
34 .sta_remove = mt76x02_sta_remove,
35 };
36 struct mt76x02_dev *dev;
37 struct mt76_dev *mdev;
38 int ret;
39
40 ret = pcim_enable_device(pdev);
41 if (ret)
42 return ret;
43
44 ret = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev));
45 if (ret)
46 return ret;
47
48 pci_set_master(pdev);
49
50 ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
51 if (ret)
52 return ret;
53
54 mdev = mt76_alloc_device(&pdev->dev, sizeof(*dev), &mt76x2_ops,
55 &drv_ops);
56 if (!mdev)
57 return -ENOMEM;
58
59 dev = container_of(mdev, struct mt76x02_dev, mt76);
60 mt76_mmio_init(mdev, pcim_iomap_table(pdev)[0]);
61 mt76x2_reset_wlan(dev, false);
62
63 mdev->rev = mt76_rr(dev, MT_ASIC_VERSION);
64 dev_info(mdev->dev, "ASIC revision: %08x\n", mdev->rev);
65
66 mt76_wr(dev, MT_INT_MASK_CSR, 0);
67
68 ret = devm_request_irq(mdev->dev, pdev->irq, mt76x02_irq_handler,
69 IRQF_SHARED, KBUILD_MODNAME, dev);
70 if (ret)
71 goto error;
72
73 ret = mt76x2_register_device(dev);
74 if (ret)
75 goto error;
76
77 /* Fix up ASPM configuration */
78
79 /* RG_SSUSB_G1_CDR_BIR_LTR = 0x9 */
80 mt76_rmw_field(dev, 0x15a10, 0x1f << 16, 0x9);
81
82 /* RG_SSUSB_G1_CDR_BIC_LTR = 0xf */
83 mt76_rmw_field(dev, 0x15a0c, 0xfU << 28, 0xf);
84
85 /* RG_SSUSB_CDR_BR_PE1D = 0x3 */
86 mt76_rmw_field(dev, 0x15c58, 0x3 << 6, 0x3);
87
88 mt76_pci_disable_aspm(pdev);
89
90 return 0;
91
92 error:
93 mt76_free_device(&dev->mt76);
94
95 return ret;
96 }
97
98 static void
mt76x2e_remove(struct pci_dev * pdev)99 mt76x2e_remove(struct pci_dev *pdev)
100 {
101 struct mt76_dev *mdev = pci_get_drvdata(pdev);
102 struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
103
104 mt76_unregister_device(mdev);
105 mt76x2_cleanup(dev);
106 mt76_free_device(mdev);
107 }
108
109 static int __maybe_unused
mt76x2e_suspend(struct pci_dev * pdev,pm_message_t state)110 mt76x2e_suspend(struct pci_dev *pdev, pm_message_t state)
111 {
112 struct mt76_dev *mdev = pci_get_drvdata(pdev);
113 int i, err;
114
115 napi_disable(&mdev->tx_napi);
116 tasklet_kill(&mdev->pre_tbtt_tasklet);
117 mt76_worker_disable(&mdev->tx_worker);
118
119 mt76_for_each_q_rx(mdev, i)
120 napi_disable(&mdev->napi[i]);
121
122 pci_enable_wake(pdev, pci_choose_state(pdev, state), true);
123 pci_save_state(pdev);
124 err = pci_set_power_state(pdev, pci_choose_state(pdev, state));
125 if (err)
126 goto restore;
127
128 return 0;
129
130 restore:
131 mt76_for_each_q_rx(mdev, i)
132 napi_enable(&mdev->napi[i]);
133 napi_enable(&mdev->tx_napi);
134
135 return err;
136 }
137
138 static int __maybe_unused
mt76x2e_resume(struct pci_dev * pdev)139 mt76x2e_resume(struct pci_dev *pdev)
140 {
141 struct mt76_dev *mdev = pci_get_drvdata(pdev);
142 struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
143 int i, err;
144
145 err = pci_set_power_state(pdev, PCI_D0);
146 if (err)
147 return err;
148
149 pci_restore_state(pdev);
150
151 mt76_worker_enable(&mdev->tx_worker);
152
153 local_bh_disable();
154 mt76_for_each_q_rx(mdev, i) {
155 napi_enable(&mdev->napi[i]);
156 napi_schedule(&mdev->napi[i]);
157 }
158 napi_enable(&mdev->tx_napi);
159 napi_schedule(&mdev->tx_napi);
160 local_bh_enable();
161
162 return mt76x2_resume_device(dev);
163 }
164
165 MODULE_DEVICE_TABLE(pci, mt76x2e_device_table);
166 MODULE_FIRMWARE(MT7662_FIRMWARE);
167 MODULE_FIRMWARE(MT7662_ROM_PATCH);
168 MODULE_LICENSE("Dual BSD/GPL");
169
170 static struct pci_driver mt76pci_driver = {
171 .name = KBUILD_MODNAME,
172 .id_table = mt76x2e_device_table,
173 .probe = mt76x2e_probe,
174 .remove = mt76x2e_remove,
175 #ifdef CONFIG_PM
176 .suspend = mt76x2e_suspend,
177 .resume = mt76x2e_resume,
178 #endif /* CONFIG_PM */
179 };
180
181 module_pci_driver(mt76pci_driver);
182