184 lines · c
1// SPDX-License-Identifier: ISC2/*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 int20mt76x2e_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 .set_channel = mt76x2e_set_channel,29 .tx_prepare_skb = mt76x02_tx_prepare_skb,30 .tx_complete_skb = mt76x02_tx_complete_skb,31 .rx_skb = mt76x02_queue_rx_skb,32 .rx_poll_complete = mt76x02_rx_poll_complete,33 .sta_ps = mt76x02_sta_ps,34 .sta_add = mt76x02_sta_add,35 .sta_remove = mt76x02_sta_remove,36 };37 struct mt76x02_dev *dev;38 struct mt76_dev *mdev;39 int ret;40 41 ret = pcim_enable_device(pdev);42 if (ret)43 return ret;44 45 ret = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev));46 if (ret)47 return ret;48 49 pci_set_master(pdev);50 51 ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));52 if (ret)53 return ret;54 55 mdev = mt76_alloc_device(&pdev->dev, sizeof(*dev), &mt76x2_ops,56 &drv_ops);57 if (!mdev)58 return -ENOMEM;59 60 dev = container_of(mdev, struct mt76x02_dev, mt76);61 mt76_mmio_init(mdev, pcim_iomap_table(pdev)[0]);62 mt76x2_reset_wlan(dev, false);63 64 mdev->rev = mt76_rr(dev, MT_ASIC_VERSION);65 dev_info(mdev->dev, "ASIC revision: %08x\n", mdev->rev);66 67 mt76_wr(dev, MT_INT_MASK_CSR, 0);68 69 ret = devm_request_irq(mdev->dev, pdev->irq, mt76x02_irq_handler,70 IRQF_SHARED, KBUILD_MODNAME, dev);71 if (ret)72 goto error;73 74 ret = mt76x2_register_device(dev);75 if (ret)76 goto error;77 78 /* Fix up ASPM configuration */79 80 /* RG_SSUSB_G1_CDR_BIR_LTR = 0x9 */81 mt76_rmw_field(dev, 0x15a10, 0x1f << 16, 0x9);82 83 /* RG_SSUSB_G1_CDR_BIC_LTR = 0xf */84 mt76_rmw_field(dev, 0x15a0c, 0xfU << 28, 0xf);85 86 /* RG_SSUSB_CDR_BR_PE1D = 0x3 */87 mt76_rmw_field(dev, 0x15c58, 0x3 << 6, 0x3);88 89 mt76_pci_disable_aspm(pdev);90 91 return 0;92 93error:94 mt76_free_device(&dev->mt76);95 96 return ret;97}98 99static void100mt76x2e_remove(struct pci_dev *pdev)101{102 struct mt76_dev *mdev = pci_get_drvdata(pdev);103 struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);104 105 mt76_unregister_device(mdev);106 mt76x2_cleanup(dev);107 mt76_free_device(mdev);108}109 110static int __maybe_unused111mt76x2e_suspend(struct pci_dev *pdev, pm_message_t state)112{113 struct mt76_dev *mdev = pci_get_drvdata(pdev);114 int i, err;115 116 napi_disable(&mdev->tx_napi);117 tasklet_kill(&mdev->pre_tbtt_tasklet);118 mt76_worker_disable(&mdev->tx_worker);119 120 mt76_for_each_q_rx(mdev, i)121 napi_disable(&mdev->napi[i]);122 123 pci_enable_wake(pdev, pci_choose_state(pdev, state), true);124 pci_save_state(pdev);125 err = pci_set_power_state(pdev, pci_choose_state(pdev, state));126 if (err)127 goto restore;128 129 return 0;130 131restore:132 mt76_for_each_q_rx(mdev, i)133 napi_enable(&mdev->napi[i]);134 napi_enable(&mdev->tx_napi);135 136 return err;137}138 139static int __maybe_unused140mt76x2e_resume(struct pci_dev *pdev)141{142 struct mt76_dev *mdev = pci_get_drvdata(pdev);143 struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);144 int i, err;145 146 err = pci_set_power_state(pdev, PCI_D0);147 if (err)148 return err;149 150 pci_restore_state(pdev);151 152 mt76_worker_enable(&mdev->tx_worker);153 154 local_bh_disable();155 mt76_for_each_q_rx(mdev, i) {156 napi_enable(&mdev->napi[i]);157 napi_schedule(&mdev->napi[i]);158 }159 napi_enable(&mdev->tx_napi);160 napi_schedule(&mdev->tx_napi);161 local_bh_enable();162 163 return mt76x2_resume_device(dev);164}165 166MODULE_DEVICE_TABLE(pci, mt76x2e_device_table);167MODULE_FIRMWARE(MT7662_FIRMWARE);168MODULE_FIRMWARE(MT7662_ROM_PATCH);169MODULE_DESCRIPTION("MediaTek MT76x2E (PCIe) wireless driver");170MODULE_LICENSE("Dual BSD/GPL");171 172static struct pci_driver mt76pci_driver = {173 .name = KBUILD_MODNAME,174 .id_table = mt76x2e_device_table,175 .probe = mt76x2e_probe,176 .remove = mt76x2e_remove,177#ifdef CONFIG_PM178 .suspend = mt76x2e_suspend,179 .resume = mt76x2e_resume,180#endif /* CONFIG_PM */181};182 183module_pci_driver(mt76pci_driver);184