1 // SPDX-License-Identifier: ISC 2 /* Copyright (C) 2020 MediaTek Inc. 3 * 4 * Author: Ryder Lee <ryder.lee@mediatek.com> 5 */ 6 7 #include <linux/kernel.h> 8 #include <linux/module.h> 9 #include <linux/pci.h> 10 11 #include "mt7915.h" 12 #include "mac.h" 13 #include "../trace.h" 14 15 static const struct pci_device_id mt7915_pci_device_table[] = { 16 { PCI_DEVICE(0x14c3, 0x7915) }, 17 { }, 18 }; 19 20 static void 21 mt7915_rx_poll_complete(struct mt76_dev *mdev, enum mt76_rxq_id q) 22 { 23 struct mt7915_dev *dev = container_of(mdev, struct mt7915_dev, mt76); 24 25 mt7915_irq_enable(dev, MT_INT_RX_DONE(q)); 26 } 27 28 /* TODO: support 2/4/6/8 MSI-X vectors */ 29 static irqreturn_t mt7915_irq_handler(int irq, void *dev_instance) 30 { 31 struct mt7915_dev *dev = dev_instance; 32 u32 intr, mask; 33 34 intr = mt76_rr(dev, MT_INT_SOURCE_CSR); 35 intr &= dev->mt76.mmio.irqmask; 36 mt76_wr(dev, MT_INT_SOURCE_CSR, intr); 37 38 if (!test_bit(MT76_STATE_INITIALIZED, &dev->mphy.state)) 39 return IRQ_NONE; 40 41 trace_dev_irq(&dev->mt76, intr, dev->mt76.mmio.irqmask); 42 43 mask = intr & MT_INT_RX_DONE_ALL; 44 if (intr & MT_INT_TX_DONE_MCU) 45 mask |= MT_INT_TX_DONE_MCU; 46 47 mt7915_irq_disable(dev, mask); 48 49 if (intr & MT_INT_TX_DONE_MCU) 50 napi_schedule(&dev->mt76.tx_napi); 51 52 if (intr & MT_INT_RX_DONE_DATA) 53 napi_schedule(&dev->mt76.napi[0]); 54 55 if (intr & MT_INT_RX_DONE_WM) 56 napi_schedule(&dev->mt76.napi[1]); 57 58 if (intr & MT_INT_RX_DONE_WA) 59 napi_schedule(&dev->mt76.napi[2]); 60 61 if (intr & MT_INT_MCU_CMD) { 62 u32 val = mt76_rr(dev, MT_MCU_CMD); 63 64 mt76_wr(dev, MT_MCU_CMD, val); 65 if (val & MT_MCU_CMD_ERROR_MASK) { 66 dev->reset_state = val; 67 ieee80211_queue_work(mt76_hw(dev), &dev->reset_work); 68 wake_up(&dev->reset_wait); 69 } 70 } 71 72 return IRQ_HANDLED; 73 } 74 75 static int 76 mt7915_alloc_device(struct pci_dev *pdev, struct mt7915_dev *dev) 77 { 78 #define NUM_BANDS 2 79 int i; 80 s8 **sku; 81 82 sku = devm_kzalloc(&pdev->dev, NUM_BANDS * sizeof(*sku), GFP_KERNEL); 83 if (!sku) 84 return -ENOMEM; 85 86 for (i = 0; i < NUM_BANDS; i++) { 87 sku[i] = devm_kzalloc(&pdev->dev, MT7915_SKU_TABLE_SIZE * 88 sizeof(**sku), GFP_KERNEL); 89 if (!sku[i]) 90 return -ENOMEM; 91 } 92 dev->rate_power = sku; 93 94 return 0; 95 } 96 97 static int mt7915_pci_probe(struct pci_dev *pdev, 98 const struct pci_device_id *id) 99 { 100 static const struct mt76_driver_ops drv_ops = { 101 /* txwi_size = txd size + txp size */ 102 .txwi_size = MT_TXD_SIZE + sizeof(struct mt7915_txp), 103 .drv_flags = MT_DRV_TXWI_NO_FREE | MT_DRV_HW_MGMT_TXQ | 104 MT_DRV_AMSDU_OFFLOAD, 105 .survey_flags = SURVEY_INFO_TIME_TX | 106 SURVEY_INFO_TIME_RX | 107 SURVEY_INFO_TIME_BSS_RX, 108 .tx_prepare_skb = mt7915_tx_prepare_skb, 109 .tx_complete_skb = mt7915_tx_complete_skb, 110 .rx_skb = mt7915_queue_rx_skb, 111 .rx_poll_complete = mt7915_rx_poll_complete, 112 .sta_ps = mt7915_sta_ps, 113 .sta_add = mt7915_mac_sta_add, 114 .sta_remove = mt7915_mac_sta_remove, 115 .update_survey = mt7915_update_channel, 116 }; 117 struct mt7915_dev *dev; 118 struct mt76_dev *mdev; 119 int ret; 120 121 ret = pcim_enable_device(pdev); 122 if (ret) 123 return ret; 124 125 ret = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev)); 126 if (ret) 127 return ret; 128 129 pci_set_master(pdev); 130 131 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 132 if (ret) 133 return ret; 134 135 mdev = mt76_alloc_device(&pdev->dev, sizeof(*dev), &mt7915_ops, 136 &drv_ops); 137 if (!mdev) 138 return -ENOMEM; 139 140 dev = container_of(mdev, struct mt7915_dev, mt76); 141 ret = mt7915_alloc_device(pdev, dev); 142 if (ret) 143 return ret; 144 145 mt76_mmio_init(&dev->mt76, pcim_iomap_table(pdev)[0]); 146 mdev->rev = (mt7915_l1_rr(dev, MT_HW_CHIPID) << 16) | 147 (mt7915_l1_rr(dev, MT_HW_REV) & 0xff); 148 dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev); 149 150 mt76_wr(dev, MT_INT_MASK_CSR, 0); 151 152 /* master switch of PCIe tnterrupt enable */ 153 mt7915_l1_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0xff); 154 155 ret = devm_request_irq(mdev->dev, pdev->irq, mt7915_irq_handler, 156 IRQF_SHARED, KBUILD_MODNAME, dev); 157 if (ret) 158 goto error; 159 160 ret = mt7915_register_device(dev); 161 if (ret) 162 goto error; 163 164 return 0; 165 error: 166 ieee80211_free_hw(mt76_hw(dev)); 167 return ret; 168 } 169 170 static void mt7915_pci_remove(struct pci_dev *pdev) 171 { 172 struct mt76_dev *mdev = pci_get_drvdata(pdev); 173 struct mt7915_dev *dev = container_of(mdev, struct mt7915_dev, mt76); 174 175 mt7915_unregister_device(dev); 176 } 177 178 struct pci_driver mt7915_pci_driver = { 179 .name = KBUILD_MODNAME, 180 .id_table = mt7915_pci_device_table, 181 .probe = mt7915_pci_probe, 182 .remove = mt7915_pci_remove, 183 }; 184 185 module_pci_driver(mt7915_pci_driver); 186 187 MODULE_DEVICE_TABLE(pci, mt7915_pci_device_table); 188 MODULE_FIRMWARE(MT7915_FIRMWARE_WA); 189 MODULE_FIRMWARE(MT7915_FIRMWARE_WM); 190 MODULE_FIRMWARE(MT7915_ROM_PATCH); 191 MODULE_LICENSE("Dual BSD/GPL"); 192