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