drivers/net/wireless/mediatek/mt76/mt7615/pci.c

   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");