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
12static 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
19static int
20mt76x2e_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
92error:
93	mt76_free_device(&dev->mt76);
94
95	return ret;
96}
97
98static void
99mt76x2e_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
109static int __maybe_unused
110mt76x2e_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
130restore:
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
138static int __maybe_unused
139mt76x2e_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
165MODULE_DEVICE_TABLE(pci, mt76x2e_device_table);
166MODULE_FIRMWARE(MT7662_FIRMWARE);
167MODULE_FIRMWARE(MT7662_ROM_PATCH);
168MODULE_DESCRIPTION("MediaTek MT76x2E (PCIe) wireless driver");
169MODULE_LICENSE("Dual BSD/GPL");
170
171static struct pci_driver mt76pci_driver = {
172	.name		= KBUILD_MODNAME,
173	.id_table	= mt76x2e_device_table,
174	.probe		= mt76x2e_probe,
175	.remove		= mt76x2e_remove,
176#ifdef CONFIG_PM
177	.suspend	= mt76x2e_suspend,
178	.resume		= mt76x2e_resume,
179#endif /* CONFIG_PM */
180};
181
182module_pci_driver(mt76pci_driver);
183