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 .txwi_flags = MT_TXWI_NO_FREE, 76 .tx_prepare_skb = mt7615_tx_prepare_skb, 77 .tx_complete_skb = mt7615_tx_complete_skb, 78 .rx_skb = mt7615_queue_rx_skb, 79 .rx_poll_complete = mt7615_rx_poll_complete, 80 .sta_ps = mt7615_sta_ps, 81 .sta_add = mt7615_sta_add, 82 .sta_assoc = mt7615_sta_assoc, 83 .sta_remove = mt7615_sta_remove, 84 .update_survey = mt7615_update_channel, 85 }; 86 struct mt7615_dev *dev; 87 struct mt76_dev *mdev; 88 int ret; 89 90 ret = pcim_enable_device(pdev); 91 if (ret) 92 return ret; 93 94 ret = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev)); 95 if (ret) 96 return ret; 97 98 pci_set_master(pdev); 99 100 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 101 if (ret) 102 return ret; 103 104 mdev = mt76_alloc_device(&pdev->dev, sizeof(*dev), &mt7615_ops, 105 &drv_ops); 106 if (!mdev) 107 return -ENOMEM; 108 109 dev = container_of(mdev, struct mt7615_dev, mt76); 110 mt76_mmio_init(&dev->mt76, pcim_iomap_table(pdev)[0]); 111 112 mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) | 113 (mt76_rr(dev, MT_HW_REV) & 0xff); 114 dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev); 115 116 ret = devm_request_irq(mdev->dev, pdev->irq, mt7615_irq_handler, 117 IRQF_SHARED, KBUILD_MODNAME, dev); 118 if (ret) 119 goto error; 120 121 ret = mt7615_register_device(dev); 122 if (ret) 123 goto error; 124 125 return 0; 126 error: 127 ieee80211_free_hw(mt76_hw(dev)); 128 return ret; 129 } 130 131 static void mt7615_pci_remove(struct pci_dev *pdev) 132 { 133 struct mt76_dev *mdev = pci_get_drvdata(pdev); 134 struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76); 135 136 mt7615_unregister_device(dev); 137 } 138 139 struct pci_driver mt7615_pci_driver = { 140 .name = KBUILD_MODNAME, 141 .id_table = mt7615_pci_device_table, 142 .probe = mt7615_pci_probe, 143 .remove = mt7615_pci_remove, 144 }; 145 146 module_pci_driver(mt7615_pci_driver); 147 148 MODULE_DEVICE_TABLE(pci, mt7615_pci_device_table); 149 MODULE_FIRMWARE(MT7615_FIRMWARE_CR4); 150 MODULE_FIRMWARE(MT7615_FIRMWARE_N9); 151 MODULE_FIRMWARE(MT7615_ROM_PATCH); 152 MODULE_LICENSE("Dual BSD/GPL"); 153