drivers/net/wireless/mediatek/mt76/mt76x0/pci.c

   1 // SPDX-License-Identifier: ISC
   2 /*
   3  * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
   4  */
   5
   6 #include <linux/kernel.h>
   7 #include <linux/module.h>
   8 #include <linux/pci.h>
   9
  10 #include "mt76x0.h"
  11 #include "mcu.h"
  12
  13 static int mt76x0e_start(struct ieee80211_hw *hw)
  14 {
  15         struct mt76x02_dev *dev = hw->priv;
  16
  17         mt76x02_mac_start(dev);
  18         mt76x0_phy_calibrate(dev, true);
  19         ieee80211_queue_delayed_work(dev->mt76.hw, &dev->mt76.mac_work,
  20                                      MT_MAC_WORK_INTERVAL);
  21         ieee80211_queue_delayed_work(dev->mt76.hw, &dev->cal_work,
  22                                      MT_CALIBRATE_INTERVAL);
  23         set_bit(MT76_STATE_RUNNING, &dev->mt76.state);
  24
  25         return 0;
  26 }
  27
  28 static void mt76x0e_stop_hw(struct mt76x02_dev *dev)
  29 {
  30         cancel_delayed_work_sync(&dev->cal_work);
  31         cancel_delayed_work_sync(&dev->mt76.mac_work);
  32
  33         if (!mt76_poll(dev, MT_WPDMA_GLO_CFG, MT_WPDMA_GLO_CFG_TX_DMA_BUSY,
  34                        0, 1000))
  35                 dev_warn(dev->mt76.dev, "TX DMA did not stop\n");
  36         mt76_clear(dev, MT_WPDMA_GLO_CFG, MT_WPDMA_GLO_CFG_TX_DMA_EN);
  37
  38         mt76x0_mac_stop(dev);
  39
  40         if (!mt76_poll(dev, MT_WPDMA_GLO_CFG, MT_WPDMA_GLO_CFG_RX_DMA_BUSY,
  41                        0, 1000))
  42                 dev_warn(dev->mt76.dev, "TX DMA did not stop\n");
  43         mt76_clear(dev, MT_WPDMA_GLO_CFG, MT_WPDMA_GLO_CFG_RX_DMA_EN);
  44 }
  45
  46 static void mt76x0e_stop(struct ieee80211_hw *hw)
  47 {
  48         struct mt76x02_dev *dev = hw->priv;
  49
  50         clear_bit(MT76_STATE_RUNNING, &dev->mt76.state);
  51         mt76x0e_stop_hw(dev);
  52 }
  53
  54 static void
  55 mt76x0e_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
  56               u32 queues, bool drop)
  57 {
  58 }
  59
  60 static const struct ieee80211_ops mt76x0e_ops = {
  61         .tx = mt76x02_tx,
  62         .start = mt76x0e_start,
  63         .stop = mt76x0e_stop,
  64         .add_interface = mt76x02_add_interface,
  65         .remove_interface = mt76x02_remove_interface,
  66         .config = mt76x0_config,
  67         .configure_filter = mt76x02_configure_filter,
  68         .bss_info_changed = mt76x02_bss_info_changed,
  69         .sta_state = mt76_sta_state,
  70         .set_key = mt76x02_set_key,
  71         .conf_tx = mt76x02_conf_tx,
  72         .sw_scan_start = mt76_sw_scan,
  73         .sw_scan_complete = mt76x02_sw_scan_complete,
  74         .ampdu_action = mt76x02_ampdu_action,
  75         .sta_rate_tbl_update = mt76x02_sta_rate_tbl_update,
  76         .wake_tx_queue = mt76_wake_tx_queue,
  77         .get_survey = mt76_get_survey,
  78         .get_txpower = mt76_get_txpower,
  79         .flush = mt76x0e_flush,
  80         .set_tim = mt76_set_tim,
  81         .release_buffered_frames = mt76_release_buffered_frames,
  82         .set_coverage_class = mt76x02_set_coverage_class,
  83         .set_rts_threshold = mt76x02_set_rts_threshold,
  84         .get_antenna = mt76_get_antenna,
  85 };
  86
  87 static int mt76x0e_register_device(struct mt76x02_dev *dev)
  88 {
  89         int err;
  90
  91         mt76x0_chip_onoff(dev, true, false);
  92         if (!mt76x02_wait_for_mac(&dev->mt76))
  93                 return -ETIMEDOUT;
  94
  95         mt76x02_dma_disable(dev);
  96         err = mt76x0e_mcu_init(dev);
  97         if (err < 0)
  98                 return err;
  99
 100         err = mt76x02_dma_init(dev);
 101         if (err < 0)
 102                 return err;
 103
 104         err = mt76x0_init_hardware(dev);
 105         if (err < 0)
 106                 return err;
 107
 108         mt76x02e_init_beacon_config(dev);
 109
 110         if (mt76_chip(&dev->mt76) == 0x7610) {
 111                 u16 val;
 112
 113                 mt76_clear(dev, MT_COEXCFG0, BIT(0));
 114
 115                 val = mt76x02_eeprom_get(dev, MT_EE_NIC_CONF_0);
 116                 if (!(val & MT_EE_NIC_CONF_0_PA_IO_CURRENT))
 117                         mt76_set(dev, MT_XO_CTRL7, 0xc03);
 118         }
 119
 120         mt76_clear(dev, 0x110, BIT(9));
 121         mt76_set(dev, MT_MAX_LEN_CFG, BIT(13));
 122
 123         err = mt76x0_register_device(dev);
 124         if (err < 0)
 125                 return err;
 126
 127         set_bit(MT76_STATE_INITIALIZED, &dev->mt76.state);
 128
 129         return 0;
 130 }
 131
 132 static int
 133 mt76x0e_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 134 {
 135         static const struct mt76_driver_ops drv_ops = {
 136                 .txwi_size = sizeof(struct mt76x02_txwi),
 137                 .drv_flags = MT_DRV_TX_ALIGNED4_SKBS |
 138                              MT_DRV_SW_RX_AIRTIME,
 139                 .survey_flags = SURVEY_INFO_TIME_TX,
 140                 .update_survey = mt76x02_update_channel,
 141                 .tx_prepare_skb = mt76x02_tx_prepare_skb,
 142                 .tx_complete_skb = mt76x02_tx_complete_skb,
 143                 .rx_skb = mt76x02_queue_rx_skb,
 144                 .rx_poll_complete = mt76x02_rx_poll_complete,
 145                 .sta_ps = mt76x02_sta_ps,
 146                 .sta_add = mt76x02_sta_add,
 147                 .sta_remove = mt76x02_sta_remove,
 148         };
 149         struct mt76x02_dev *dev;
 150         struct mt76_dev *mdev;
 151         int ret;
 152
 153         ret = pcim_enable_device(pdev);
 154         if (ret)
 155                 return ret;
 156
 157         ret = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev));
 158         if (ret)
 159                 return ret;
 160
 161         pci_set_master(pdev);
 162
 163         ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
 164         if (ret)
 165                 return ret;
 166
 167         mdev = mt76_alloc_device(&pdev->dev, sizeof(*dev), &mt76x0e_ops,
 168                                  &drv_ops);
 169         if (!mdev)
 170                 return -ENOMEM;
 171
 172         dev = container_of(mdev, struct mt76x02_dev, mt76);
 173         mutex_init(&dev->phy_mutex);
 174
 175         mt76_mmio_init(mdev, pcim_iomap_table(pdev)[0]);
 176
 177         mdev->rev = mt76_rr(dev, MT_ASIC_VERSION);
 178         dev_info(mdev->dev, "ASIC revision: %08x\n", mdev->rev);
 179
 180         ret = devm_request_irq(mdev->dev, pdev->irq, mt76x02_irq_handler,
 181                                IRQF_SHARED, KBUILD_MODNAME, dev);
 182         if (ret)
 183                 goto error;
 184
 185         ret = mt76x0e_register_device(dev);
 186         if (ret < 0)
 187                 goto error;
 188
 189         return 0;
 190
 191 error:
 192         ieee80211_free_hw(mt76_hw(dev));
 193         return ret;
 194 }
 195
 196 static void mt76x0e_cleanup(struct mt76x02_dev *dev)
 197 {
 198         clear_bit(MT76_STATE_INITIALIZED, &dev->mt76.state);
 199         tasklet_disable(&dev->mt76.pre_tbtt_tasklet);
 200         mt76x0_chip_onoff(dev, false, false);
 201         mt76x0e_stop_hw(dev);
 202         mt76x02_dma_cleanup(dev);
 203         mt76x02_mcu_cleanup(dev);
 204 }
 205
 206 static void
 207 mt76x0e_remove(struct pci_dev *pdev)
 208 {
 209         struct mt76_dev *mdev = pci_get_drvdata(pdev);
 210         struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
 211
 212         mt76_unregister_device(mdev);
 213         mt76x0e_cleanup(dev);
 214         mt76_free_device(mdev);
 215 }
 216
 217 static const struct pci_device_id mt76x0e_device_table[] = {
 218         { PCI_DEVICE(0x14c3, 0x7630) },
 219         { PCI_DEVICE(0x14c3, 0x7650) },
 220         { },
 221 };
 222
 223 MODULE_DEVICE_TABLE(pci, mt76x0e_device_table);
 224 MODULE_FIRMWARE(MT7610E_FIRMWARE);
 225 MODULE_FIRMWARE(MT7650E_FIRMWARE);
 226 MODULE_LICENSE("Dual BSD/GPL");
 227
 228 static struct pci_driver mt76x0e_driver = {
 229         .name           = KBUILD_MODNAME,
 230         .id_table       = mt76x0e_device_table,
 231         .probe          = mt76x0e_probe,
 232         .remove         = mt76x0e_remove,
 233 };
 234
 235 module_pci_driver(mt76x0e_driver);