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