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 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, 0xf << 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 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 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 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