developer | 0f312e8 | 2022-11-01 12:31:52 +0800 | [diff] [blame] | 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); |