1 // SPDX-License-Identifier: ISC
2 /* Copyright (C) 2019 MediaTek Inc.
3 *
4 * Author: Ryder Lee <ryder.lee@mediatek.com>
5 * Felix Fietkau <nbd@nbd.name>
6 */
7
8 #include <linux/kernel.h>
9 #include <linux/module.h>
10 #include <linux/pci.h>
11
12 #include "mt7615.h"
13
14 static const struct pci_device_id mt7615_pci_device_table[] = {
15 { PCI_DEVICE(0x14c3, 0x7615) },
16 { PCI_DEVICE(0x14c3, 0x7663) },
17 { PCI_DEVICE(0x14c3, 0x7611) },
18 { },
19 };
20
mt7615_pci_probe(struct pci_dev * pdev,const struct pci_device_id * id)21 static int mt7615_pci_probe(struct pci_dev *pdev,
22 const struct pci_device_id *id)
23 {
24 const u32 *map;
25 int ret;
26
27 ret = pcim_enable_device(pdev);
28 if (ret)
29 return ret;
30
31 ret = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev));
32 if (ret)
33 return ret;
34
35 pci_set_master(pdev);
36
37 ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES);
38 if (ret < 0)
39 return ret;
40
41 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
42 if (ret)
43 goto error;
44
45 mt76_pci_disable_aspm(pdev);
46
47 map = id->device == 0x7663 ? mt7663e_reg_map : mt7615e_reg_map;
48 ret = mt7615_mmio_probe(&pdev->dev, pcim_iomap_table(pdev)[0],
49 pdev->irq, map);
50 if (ret)
51 goto error;
52
53 return 0;
54 error:
55 pci_free_irq_vectors(pdev);
56
57 return ret;
58 }
59
mt7615_pci_remove(struct pci_dev * pdev)60 static void mt7615_pci_remove(struct pci_dev *pdev)
61 {
62 struct mt76_dev *mdev = pci_get_drvdata(pdev);
63 struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
64
65 mt7615_unregister_device(dev);
66 devm_free_irq(&pdev->dev, pdev->irq, dev);
67 pci_free_irq_vectors(pdev);
68 }
69
70 #ifdef CONFIG_PM
mt7615_pci_suspend(struct pci_dev * pdev,pm_message_t state)71 static int mt7615_pci_suspend(struct pci_dev *pdev, pm_message_t state)
72 {
73 struct mt76_dev *mdev = pci_get_drvdata(pdev);
74 struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
75 bool hif_suspend;
76 int i, err;
77
78 err = mt7615_pm_wake(dev);
79 if (err < 0)
80 return err;
81
82 hif_suspend = !test_bit(MT76_STATE_SUSPEND, &dev->mphy.state) &&
83 mt7615_firmware_offload(dev);
84 if (hif_suspend) {
85 err = mt7615_mcu_set_hif_suspend(dev, true);
86 if (err)
87 return err;
88 }
89
90 napi_disable(&mdev->tx_napi);
91 mt76_worker_disable(&mdev->tx_worker);
92
93 mt76_for_each_q_rx(mdev, i) {
94 napi_disable(&mdev->napi[i]);
95 }
96 tasklet_kill(&dev->irq_tasklet);
97
98 mt7615_dma_reset(dev);
99
100 err = mt7615_wait_pdma_busy(dev);
101 if (err)
102 goto restore;
103
104 if (is_mt7663(mdev)) {
105 mt76_set(dev, MT_PDMA_SLP_PROT, MT_PDMA_AXI_SLPPROT_ENABLE);
106 if (!mt76_poll_msec(dev, MT_PDMA_SLP_PROT,
107 MT_PDMA_AXI_SLPPROT_RDY,
108 MT_PDMA_AXI_SLPPROT_RDY, 1000)) {
109 dev_err(mdev->dev, "PDMA sleep protection failed\n");
110 err = -EIO;
111 goto restore;
112 }
113 }
114
115 pci_enable_wake(pdev, pci_choose_state(pdev, state), true);
116 pci_save_state(pdev);
117 err = pci_set_power_state(pdev, pci_choose_state(pdev, state));
118 if (err)
119 goto restore;
120
121 err = mt7615_mcu_set_fw_ctrl(dev);
122 if (err)
123 goto restore;
124
125 return 0;
126
127 restore:
128 mt76_for_each_q_rx(mdev, i) {
129 napi_enable(&mdev->napi[i]);
130 }
131 napi_enable(&mdev->tx_napi);
132 if (hif_suspend)
133 mt7615_mcu_set_hif_suspend(dev, false);
134
135 return err;
136 }
137
mt7615_pci_resume(struct pci_dev * pdev)138 static int mt7615_pci_resume(struct pci_dev *pdev)
139 {
140 struct mt76_dev *mdev = pci_get_drvdata(pdev);
141 struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
142 bool pdma_reset;
143 int i, err;
144
145 err = mt7615_mcu_set_drv_ctrl(dev);
146 if (err < 0)
147 return err;
148
149 err = pci_set_power_state(pdev, PCI_D0);
150 if (err)
151 return err;
152
153 pci_restore_state(pdev);
154
155 if (is_mt7663(&dev->mt76)) {
156 mt76_clear(dev, MT_PDMA_SLP_PROT, MT_PDMA_AXI_SLPPROT_ENABLE);
157 mt76_wr(dev, MT_PCIE_IRQ_ENABLE, 1);
158 }
159
160 pdma_reset = !mt76_rr(dev, MT_WPDMA_TX_RING0_CTRL0) &&
161 !mt76_rr(dev, MT_WPDMA_TX_RING0_CTRL1);
162 if (pdma_reset)
163 dev_err(mdev->dev, "PDMA engine must be reinitialized\n");
164
165 mt76_worker_enable(&mdev->tx_worker);
166 mt76_for_each_q_rx(mdev, i) {
167 napi_enable(&mdev->napi[i]);
168 napi_schedule(&mdev->napi[i]);
169 }
170 napi_enable(&mdev->tx_napi);
171 napi_schedule(&mdev->tx_napi);
172
173 if (!test_bit(MT76_STATE_SUSPEND, &dev->mphy.state) &&
174 mt7615_firmware_offload(dev))
175 err = mt7615_mcu_set_hif_suspend(dev, false);
176
177 return err;
178 }
179 #endif /* CONFIG_PM */
180
181 struct pci_driver mt7615_pci_driver = {
182 .name = KBUILD_MODNAME,
183 .id_table = mt7615_pci_device_table,
184 .probe = mt7615_pci_probe,
185 .remove = mt7615_pci_remove,
186 #ifdef CONFIG_PM
187 .suspend = mt7615_pci_suspend,
188 .resume = mt7615_pci_resume,
189 #endif /* CONFIG_PM */
190 };
191
192 MODULE_DEVICE_TABLE(pci, mt7615_pci_device_table);
193 MODULE_FIRMWARE(MT7615_FIRMWARE_CR4);
194 MODULE_FIRMWARE(MT7615_FIRMWARE_N9);
195 MODULE_FIRMWARE(MT7615_ROM_PATCH);
196 MODULE_FIRMWARE(MT7663_OFFLOAD_FIRMWARE_N9);
197 MODULE_FIRMWARE(MT7663_OFFLOAD_ROM_PATCH);
198 MODULE_FIRMWARE(MT7663_FIRMWARE_N9);
199 MODULE_FIRMWARE(MT7663_ROM_PATCH);
200
