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 #include "mac.h" 14 15 static const struct pci_device_id mt7615_pci_device_table[] = { 16 { PCI_DEVICE(0x14c3, 0x7615) }, 17 { }, 18 }; 19 20 u32 mt7615_reg_map(struct mt7615_dev *dev, u32 addr) 21 { 22 u32 base = addr & MT_MCU_PCIE_REMAP_2_BASE; 23 u32 offset = addr & MT_MCU_PCIE_REMAP_2_OFFSET; 24 25 mt76_wr(dev, MT_MCU_PCIE_REMAP_2, base); 26 27 return MT_PCIE_REMAP_BASE_2 + offset; 28 } 29 30 static void 31 mt7615_rx_poll_complete(struct mt76_dev *mdev, enum mt76_rxq_id q) 32 { 33 struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76); 34 35 mt7615_irq_enable(dev, MT_INT_RX_DONE(q)); 36 } 37 38 static irqreturn_t mt7615_irq_handler(int irq, void *dev_instance) 39 { 40 struct mt7615_dev *dev = dev_instance; 41 u32 intr; 42 43 intr = mt76_rr(dev, MT_INT_SOURCE_CSR); 44 mt76_wr(dev, MT_INT_SOURCE_CSR, intr); 45 46 if (!test_bit(MT76_STATE_INITIALIZED, &dev->mt76.state)) 47 return IRQ_NONE; 48 49 intr &= dev->mt76.mmio.irqmask; 50 51 if (intr & MT_INT_TX_DONE_ALL) { 52 mt7615_irq_disable(dev, MT_INT_TX_DONE_ALL); 53 napi_schedule(&dev->mt76.tx_napi); 54 } 55 56 if (intr & MT_INT_RX_DONE(0)) { 57 mt7615_irq_disable(dev, MT_INT_RX_DONE(0)); 58 napi_schedule(&dev->mt76.napi[0]); 59 } 60 61 if (intr & MT_INT_RX_DONE(1)) { 62 mt7615_irq_disable(dev, MT_INT_RX_DONE(1)); 63 napi_schedule(&dev->mt76.napi[1]); 64 } 65 66 return IRQ_HANDLED; 67 } 68 69 static int mt7615_pci_probe(struct pci_dev *pdev, 70 const struct pci_device_id *id) 71 { 72 static const struct mt76_driver_ops drv_ops = { 73 /* txwi_size = txd size + txp size */ 74 .txwi_size = MT_TXD_SIZE + sizeof(struct mt7615_txp), 75 .drv_flags = MT_DRV_TXWI_NO_FREE, 76 .survey_flags = SURVEY_INFO_TIME_TX | 77 SURVEY_INFO_TIME_RX | 78 SURVEY_INFO_TIME_BSS_RX, 79 .tx_prepare_skb = mt7615_tx_prepare_skb, 80 .tx_complete_skb = mt7615_tx_complete_skb, 81 .rx_skb = mt7615_queue_rx_skb, 82 .rx_poll_complete = mt7615_rx_poll_complete, 83 .sta_ps = mt7615_sta_ps, 84 .sta_add = mt7615_sta_add, 85 .sta_assoc = mt7615_sta_assoc, 86 .sta_remove = mt7615_sta_remove, 87 .update_survey = mt7615_update_channel, 88 }; 89 struct mt7615_dev *dev; 90 struct mt76_dev *mdev; 91 int ret; 92 93 ret = pcim_enable_device(pdev); 94 if (ret) 95 return ret; 96 97 ret = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev)); 98 if (ret) 99 return ret; 100 101 pci_set_master(pdev); 102 103 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 104 if (ret) 105 return ret; 106 107 mdev = mt76_alloc_device(&pdev->dev, sizeof(*dev), &mt7615_ops, 108 &drv_ops); 109 if (!mdev) 110 return -ENOMEM; 111 112 dev = container_of(mdev, struct mt7615_dev, mt76); 113 mt76_mmio_init(&dev->mt76, pcim_iomap_table(pdev)[0]); 114 115 mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) | 116 (mt76_rr(dev, MT_HW_REV) & 0xff); 117 dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev); 118 119 ret = devm_request_irq(mdev->dev, pdev->irq, mt7615_irq_handler, 120 IRQF_SHARED, KBUILD_MODNAME, dev); 121 if (ret) 122 goto error; 123 124 ret = mt7615_register_device(dev); 125 if (ret) 126 goto error; 127 128 return 0; 129 error: 130 ieee80211_free_hw(mt76_hw(dev)); 131 return ret; 132 } 133 134 static void mt7615_pci_remove(struct pci_dev *pdev) 135 { 136 struct mt76_dev *mdev = pci_get_drvdata(pdev); 137 struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76); 138 139 mt7615_unregister_device(dev); 140 } 141 142 struct pci_driver mt7615_pci_driver = { 143 .name = KBUILD_MODNAME, 144 .id_table = mt7615_pci_device_table, 145 .probe = mt7615_pci_probe, 146 .remove = mt7615_pci_remove, 147 }; 148 149 module_pci_driver(mt7615_pci_driver); 150 151 MODULE_DEVICE_TABLE(pci, mt7615_pci_device_table); 152 MODULE_FIRMWARE(MT7615_FIRMWARE_CR4); 153 MODULE_FIRMWARE(MT7615_FIRMWARE_N9); 154 MODULE_FIRMWARE(MT7615_ROM_PATCH); 155 MODULE_LICENSE("Dual BSD/GPL"); 156