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(0x14c3, 0x7662) }, 14 { PCI_DEVICE(0x14c3, 0x7612) }, 15 { PCI_DEVICE(0x14c3, 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 = pci_set_dma_mask(pdev, 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 ret = devm_request_irq(mdev->dev, pdev->irq, mt76x02_irq_handler, 67 IRQF_SHARED, KBUILD_MODNAME, dev); 68 if (ret) 69 goto error; 70 71 ret = mt76x2_register_device(dev); 72 if (ret) 73 goto error; 74 75 /* Fix up ASPM configuration */ 76 77 /* RG_SSUSB_G1_CDR_BIR_LTR = 0x9 */ 78 mt76_rmw_field(dev, 0x15a10, 0x1f << 16, 0x9); 79 80 /* RG_SSUSB_G1_CDR_BIC_LTR = 0xf */ 81 mt76_rmw_field(dev, 0x15a0c, 0xf << 28, 0xf); 82 83 /* RG_SSUSB_CDR_BR_PE1D = 0x3 */ 84 mt76_rmw_field(dev, 0x15c58, 0x3 << 6, 0x3); 85 86 mt76_pci_disable_aspm(pdev); 87 88 return 0; 89 90 error: 91 ieee80211_free_hw(mt76_hw(dev)); 92 return ret; 93 } 94 95 static void 96 mt76x2e_remove(struct pci_dev *pdev) 97 { 98 struct mt76_dev *mdev = pci_get_drvdata(pdev); 99 struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76); 100 101 mt76_unregister_device(mdev); 102 mt76x2_cleanup(dev); 103 mt76_free_device(mdev); 104 } 105 106 static int __maybe_unused 107 mt76x2e_suspend(struct pci_dev *pdev, pm_message_t state) 108 { 109 struct mt76_dev *mdev = pci_get_drvdata(pdev); 110 int i, err; 111 112 napi_disable(&mdev->tx_napi); 113 tasklet_kill(&mdev->pre_tbtt_tasklet); 114 tasklet_kill(&mdev->tx_tasklet); 115 116 mt76_for_each_q_rx(mdev, i) 117 napi_disable(&mdev->napi[i]); 118 119 pci_enable_wake(pdev, pci_choose_state(pdev, state), true); 120 pci_save_state(pdev); 121 err = pci_set_power_state(pdev, pci_choose_state(pdev, state)); 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 napi_enable(&mdev->tx_napi); 131 132 return err; 133 } 134 135 static int __maybe_unused 136 mt76x2e_resume(struct pci_dev *pdev) 137 { 138 struct mt76_dev *mdev = pci_get_drvdata(pdev); 139 struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76); 140 int i, err; 141 142 err = pci_set_power_state(pdev, PCI_D0); 143 if (err) 144 return err; 145 146 pci_restore_state(pdev); 147 148 mt76_for_each_q_rx(mdev, i) { 149 napi_enable(&mdev->napi[i]); 150 napi_schedule(&mdev->napi[i]); 151 } 152 napi_enable(&mdev->tx_napi); 153 napi_schedule(&mdev->tx_napi); 154 155 return mt76x2_resume_device(dev); 156 } 157 158 MODULE_DEVICE_TABLE(pci, mt76x2e_device_table); 159 MODULE_FIRMWARE(MT7662_FIRMWARE); 160 MODULE_FIRMWARE(MT7662_ROM_PATCH); 161 MODULE_LICENSE("Dual BSD/GPL"); 162 163 static struct pci_driver mt76pci_driver = { 164 .name = KBUILD_MODNAME, 165 .id_table = mt76x2e_device_table, 166 .probe = mt76x2e_probe, 167 .remove = mt76x2e_remove, 168 #ifdef CONFIG_PM 169 .suspend = mt76x2e_suspend, 170 .resume = mt76x2e_resume, 171 #endif /* CONFIG_PM */ 172 }; 173 174 module_pci_driver(mt76pci_driver); 175