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->mphy.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->mphy.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         .sta_pre_rcu_remove = mt76_sta_pre_rcu_remove,
  71         .set_key = mt76x02_set_key,
  72         .conf_tx = mt76x02_conf_tx,
  73         .sw_scan_start = mt76_sw_scan,
  74         .sw_scan_complete = mt76x02_sw_scan_complete,
  75         .ampdu_action = mt76x02_ampdu_action,
  76         .sta_rate_tbl_update = mt76x02_sta_rate_tbl_update,
  77         .wake_tx_queue = mt76_wake_tx_queue,
  78         .get_survey = mt76_get_survey,
  79         .get_txpower = mt76_get_txpower,
  80         .flush = mt76x0e_flush,
  81         .set_tim = mt76_set_tim,
  82         .release_buffered_frames = mt76_release_buffered_frames,
  83         .set_coverage_class = mt76x02_set_coverage_class,
  84         .set_rts_threshold = mt76x02_set_rts_threshold,
  85         .get_antenna = mt76_get_antenna,
  86 };
  87
  88 static int mt76x0e_register_device(struct mt76x02_dev *dev)
  89 {
  90         int err;
  91
  92         mt76x0_chip_onoff(dev, true, false);
  93         if (!mt76x02_wait_for_mac(&dev->mt76))
  94                 return -ETIMEDOUT;
  95
  96         mt76x02_dma_disable(dev);
  97         err = mt76x0e_mcu_init(dev);
  98         if (err < 0)
  99                 return err;
 100
 101         err = mt76x02_dma_init(dev);
 102         if (err < 0)
 103                 return err;
 104
 105         err = mt76x0_init_hardware(dev);
 106         if (err < 0)
 107                 return err;
 108
 109         mt76x02e_init_beacon_config(dev);
 110
 111         if (mt76_chip(&dev->mt76) == 0x7610) {
 112                 u16 val;
 113
 114                 mt76_clear(dev, MT_COEXCFG0, BIT(0));
 115
 116                 val = mt76x02_eeprom_get(dev, MT_EE_NIC_CONF_0);
 117                 if (!(val & MT_EE_NIC_CONF_0_PA_IO_CURRENT))
 118                         mt76_set(dev, MT_XO_CTRL7, 0xc03);
 119         }
 120
 121         mt76_clear(dev, 0x110, BIT(9));
 122         mt76_set(dev, MT_MAX_LEN_CFG, BIT(13));
 123
 124         err = mt76x0_register_device(dev);
 125         if (err < 0)
 126                 return err;
 127
 128         set_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
 129
 130         return 0;
 131 }
 132
 133 static int
 134 mt76x0e_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 135 {
 136         static const struct mt76_driver_ops drv_ops = {
 137                 .txwi_size = sizeof(struct mt76x02_txwi),
 138                 .drv_flags = MT_DRV_TX_ALIGNED4_SKBS |
 139                              MT_DRV_SW_RX_AIRTIME,
 140                 .survey_flags = SURVEY_INFO_TIME_TX,
 141                 .update_survey = mt76x02_update_channel,
 142                 .tx_prepare_skb = mt76x02_tx_prepare_skb,
 143                 .tx_complete_skb = mt76x02_tx_complete_skb,
 144                 .rx_skb = mt76x02_queue_rx_skb,
 145                 .rx_poll_complete = mt76x02_rx_poll_complete,
 146                 .sta_ps = mt76x02_sta_ps,
 147                 .sta_add = mt76x02_sta_add,
 148                 .sta_remove = mt76x02_sta_remove,
 149         };
 150         struct mt76x02_dev *dev;
 151         struct mt76_dev *mdev;
 152         int ret;
 153
 154         ret = pcim_enable_device(pdev);
 155         if (ret)
 156                 return ret;
 157
 158         ret = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev));
 159         if (ret)
 160                 return ret;
 161
 162         pci_set_master(pdev);
 163
 164         ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
 165         if (ret)
 166                 return ret;
 167
 168         mdev = mt76_alloc_device(&pdev->dev, sizeof(*dev), &mt76x0e_ops,
 169                                  &drv_ops);
 170         if (!mdev)
 171                 return -ENOMEM;
 172
 173         dev = container_of(mdev, struct mt76x02_dev, mt76);
 174         mutex_init(&dev->phy_mutex);
 175
 176         mt76_mmio_init(mdev, pcim_iomap_table(pdev)[0]);
 177
 178         mdev->rev = mt76_rr(dev, MT_ASIC_VERSION);
 179         dev_info(mdev->dev, "ASIC revision: %08x\n", mdev->rev);
 180
 181         ret = devm_request_irq(mdev->dev, pdev->irq, mt76x02_irq_handler,
 182                                IRQF_SHARED, KBUILD_MODNAME, dev);
 183         if (ret)
 184                 goto error;
 185
 186         ret = mt76x0e_register_device(dev);
 187         if (ret < 0)
 188                 goto error;
 189
 190         return 0;
 191
 192 error:
 193         ieee80211_free_hw(mt76_hw(dev));
 194         return ret;
 195 }
 196
 197 static void mt76x0e_cleanup(struct mt76x02_dev *dev)
 198 {
 199         clear_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
 200         tasklet_disable(&dev->mt76.pre_tbtt_tasklet);
 201         mt76x0_chip_onoff(dev, false, false);
 202         mt76x0e_stop_hw(dev);
 203         mt76x02_dma_cleanup(dev);
 204         mt76x02_mcu_cleanup(dev);
 205 }
 206
 207 static void
 208 mt76x0e_remove(struct pci_dev *pdev)
 209 {
 210         struct mt76_dev *mdev = pci_get_drvdata(pdev);
 211         struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
 212
 213         mt76_unregister_device(mdev);
 214         mt76x0e_cleanup(dev);
 215         mt76_free_device(mdev);
 216 }
 217
 218 static const struct pci_device_id mt76x0e_device_table[] = {
 219         { PCI_DEVICE(0x14c3, 0x7630) },
 220         { PCI_DEVICE(0x14c3, 0x7650) },
 221         { },
 222 };
 223
 224 MODULE_DEVICE_TABLE(pci, mt76x0e_device_table);
 225 MODULE_FIRMWARE(MT7610E_FIRMWARE);
 226 MODULE_FIRMWARE(MT7650E_FIRMWARE);
 227 MODULE_LICENSE("Dual BSD/GPL");
 228
 229 static struct pci_driver mt76x0e_driver = {
 230         .name           = KBUILD_MODNAME,
 231         .id_table       = mt76x0e_device_table,
 232         .probe          = mt76x0e_probe,
 233         .remove         = mt76x0e_remove,
 234 };
 235
 236 module_pci_driver(mt76x0e_driver);