diff options
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/mt76x0/usb.c')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt76x0/usb.c | 352 |
1 files changed, 352 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt76x0/usb.c b/drivers/net/wireless/mediatek/mt76/mt76x0/usb.c new file mode 100644 index 000000000..0422c3323 --- /dev/null +++ b/drivers/net/wireless/mediatek/mt76/mt76x0/usb.c @@ -0,0 +1,352 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl> + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/usb.h> + +#include "mt76x0.h" +#include "mcu.h" +#include "../mt76x02_usb.h" + +static struct usb_device_id mt76x0_device_table[] = { + { USB_DEVICE(0x148F, 0x7610) }, /* MT7610U */ + { USB_DEVICE(0x13B1, 0x003E) }, /* Linksys AE6000 */ + { USB_DEVICE(0x0E8D, 0x7610) }, /* Sabrent NTWLAC */ + { USB_DEVICE(0x7392, 0xa711) }, /* Edimax 7711mac */ + { USB_DEVICE(0x7392, 0xb711) }, /* Edimax / Elecom */ + { USB_DEVICE(0x148f, 0x761a) }, /* TP-Link TL-WDN5200 */ + { USB_DEVICE(0x148f, 0x760a) }, /* TP-Link unknown */ + { USB_DEVICE(0x0b05, 0x17d1) }, /* Asus USB-AC51 */ + { USB_DEVICE(0x0b05, 0x17db) }, /* Asus USB-AC50 */ + { USB_DEVICE(0x0df6, 0x0075) }, /* Sitecom WLA-3100 */ + { USB_DEVICE(0x2019, 0xab31) }, /* Planex GW-450D */ + { USB_DEVICE(0x2001, 0x3d02) }, /* D-LINK DWA-171 rev B1 */ + { USB_DEVICE(0x0586, 0x3425) }, /* Zyxel NWD6505 */ + { USB_DEVICE(0x07b8, 0x7610) }, /* AboCom AU7212 */ + { USB_DEVICE(0x04bb, 0x0951) }, /* I-O DATA WN-AC433UK */ + { USB_DEVICE(0x057c, 0x8502) }, /* AVM FRITZ!WLAN USB Stick AC 430 */ + { USB_DEVICE(0x293c, 0x5702) }, /* Comcast Xfinity KXW02AAA */ + { USB_DEVICE(0x20f4, 0x806b) }, /* TRENDnet TEW-806UBH */ + { USB_DEVICE(0x7392, 0xc711) }, /* Devolo Wifi ac Stick */ + { USB_DEVICE(0x0df6, 0x0079) }, /* Sitecom Europe B.V. ac Stick */ + { USB_DEVICE(0x2357, 0x0123) }, /* TP-LINK T2UHP_US_v1 */ + { USB_DEVICE(0x2357, 0x010b) }, /* TP-LINK T2UHP_UN_v1 */ + /* TP-LINK Archer T1U */ + { USB_DEVICE(0x2357, 0x0105), .driver_info = 1, }, + /* MT7630U */ + { USB_DEVICE_AND_INTERFACE_INFO(0x0E8D, 0x7630, 0xff, 0x2, 0xff)}, + /* MT7650U */ + { USB_DEVICE_AND_INTERFACE_INFO(0x0E8D, 0x7650, 0xff, 0x2, 0xff)}, + { 0, } +}; + +static void mt76x0_init_usb_dma(struct mt76x02_dev *dev) +{ + u32 val; + + val = mt76_rr(dev, MT_USB_DMA_CFG); + + val |= MT_USB_DMA_CFG_RX_BULK_EN | + MT_USB_DMA_CFG_TX_BULK_EN; + + /* disable AGGR_BULK_RX in order to receive one + * frame in each rx urb and avoid copies + */ + val &= ~MT_USB_DMA_CFG_RX_BULK_AGG_EN; + mt76_wr(dev, MT_USB_DMA_CFG, val); + + val = mt76_rr(dev, MT_COM_REG0); + if (val & 1) + dev_dbg(dev->mt76.dev, "MCU not ready\n"); + + val = mt76_rr(dev, MT_USB_DMA_CFG); + + val |= MT_USB_DMA_CFG_RX_DROP_OR_PAD; + mt76_wr(dev, MT_USB_DMA_CFG, val); + val &= ~MT_USB_DMA_CFG_RX_DROP_OR_PAD; + mt76_wr(dev, MT_USB_DMA_CFG, val); +} + +static void mt76x0u_cleanup(struct mt76x02_dev *dev) +{ + clear_bit(MT76_STATE_INITIALIZED, &dev->mphy.state); + mt76x0_chip_onoff(dev, false, false); + mt76u_queues_deinit(&dev->mt76); +} + +static void mt76x0u_stop(struct ieee80211_hw *hw) +{ + struct mt76x02_dev *dev = hw->priv; + + clear_bit(MT76_STATE_RUNNING, &dev->mphy.state); + cancel_delayed_work_sync(&dev->cal_work); + cancel_delayed_work_sync(&dev->mphy.mac_work); + mt76u_stop_tx(&dev->mt76); + mt76x02u_exit_beacon_config(dev); + + if (test_bit(MT76_REMOVED, &dev->mphy.state)) + return; + + if (!mt76_poll(dev, MT_USB_DMA_CFG, MT_USB_DMA_CFG_TX_BUSY, 0, 1000)) + dev_warn(dev->mt76.dev, "TX DMA did not stop\n"); + + mt76x0_mac_stop(dev); + + if (!mt76_poll(dev, MT_USB_DMA_CFG, MT_USB_DMA_CFG_RX_BUSY, 0, 1000)) + dev_warn(dev->mt76.dev, "RX DMA did not stop\n"); +} + +static int mt76x0u_start(struct ieee80211_hw *hw) +{ + struct mt76x02_dev *dev = hw->priv; + int ret; + + ret = mt76x02u_mac_start(dev); + if (ret) + return ret; + + mt76x0_phy_calibrate(dev, true); + ieee80211_queue_delayed_work(dev->mt76.hw, &dev->mphy.mac_work, + MT_MAC_WORK_INTERVAL); + ieee80211_queue_delayed_work(dev->mt76.hw, &dev->cal_work, + MT_CALIBRATE_INTERVAL); + set_bit(MT76_STATE_RUNNING, &dev->mphy.state); + return 0; +} + +static const struct ieee80211_ops mt76x0u_ops = { + .tx = mt76x02_tx, + .start = mt76x0u_start, + .stop = mt76x0u_stop, + .add_interface = mt76x02_add_interface, + .remove_interface = mt76x02_remove_interface, + .config = mt76x0_config, + .configure_filter = mt76x02_configure_filter, + .bss_info_changed = mt76x02_bss_info_changed, + .sta_state = mt76_sta_state, + .sta_pre_rcu_remove = mt76_sta_pre_rcu_remove, + .set_key = mt76x02_set_key, + .conf_tx = mt76x02_conf_tx, + .sw_scan_start = mt76_sw_scan, + .sw_scan_complete = mt76x02_sw_scan_complete, + .ampdu_action = mt76x02_ampdu_action, + .sta_rate_tbl_update = mt76x02_sta_rate_tbl_update, + .set_rts_threshold = mt76x02_set_rts_threshold, + .wake_tx_queue = mt76_wake_tx_queue, + .get_txpower = mt76_get_txpower, + .get_survey = mt76_get_survey, + .set_tim = mt76_set_tim, + .release_buffered_frames = mt76_release_buffered_frames, + .get_antenna = mt76_get_antenna, + .set_sar_specs = mt76x0_set_sar_specs, +}; + +static int mt76x0u_init_hardware(struct mt76x02_dev *dev, bool reset) +{ + int err; + + mt76x0_chip_onoff(dev, true, reset); + + if (!mt76x02_wait_for_mac(&dev->mt76)) + return -ETIMEDOUT; + + err = mt76x0u_mcu_init(dev); + if (err < 0) + return err; + + mt76x0_init_usb_dma(dev); + err = mt76x0_init_hardware(dev); + if (err < 0) + return err; + + mt76x02u_init_beacon_config(dev); + + mt76_rmw(dev, MT_US_CYC_CFG, MT_US_CYC_CNT, 0x1e); + mt76_wr(dev, MT_TXOP_CTRL_CFG, + FIELD_PREP(MT_TXOP_TRUN_EN, 0x3f) | + FIELD_PREP(MT_TXOP_EXT_CCA_DLY, 0x58)); + + return 0; +} + +static int mt76x0u_register_device(struct mt76x02_dev *dev) +{ + struct ieee80211_hw *hw = dev->mt76.hw; + struct mt76_usb *usb = &dev->mt76.usb; + int err; + + usb->mcu.data = devm_kmalloc(dev->mt76.dev, MCU_RESP_URB_SIZE, + GFP_KERNEL); + if (!usb->mcu.data) + return -ENOMEM; + + err = mt76u_alloc_queues(&dev->mt76); + if (err < 0) + goto out_err; + + err = mt76x0u_init_hardware(dev, true); + if (err < 0) + goto out_err; + + /* check hw sg support in order to enable AMSDU */ + hw->max_tx_fragments = dev->mt76.usb.sg_en ? MT_TX_SG_MAX_SIZE : 1; + err = mt76x0_register_device(dev); + if (err < 0) + goto out_err; + + set_bit(MT76_STATE_INITIALIZED, &dev->mphy.state); + + return 0; + +out_err: + mt76x0u_cleanup(dev); + return err; +} + +static int mt76x0u_probe(struct usb_interface *usb_intf, + const struct usb_device_id *id) +{ + static const struct mt76_driver_ops drv_ops = { + .drv_flags = MT_DRV_SW_RX_AIRTIME, + .survey_flags = SURVEY_INFO_TIME_TX, + .update_survey = mt76x02_update_channel, + .tx_prepare_skb = mt76x02u_tx_prepare_skb, + .tx_complete_skb = mt76x02u_tx_complete_skb, + .tx_status_data = mt76x02_tx_status_data, + .rx_skb = mt76x02_queue_rx_skb, + .sta_ps = mt76x02_sta_ps, + .sta_add = mt76x02_sta_add, + .sta_remove = mt76x02_sta_remove, + }; + struct usb_device *usb_dev = interface_to_usbdev(usb_intf); + struct mt76x02_dev *dev; + struct mt76_dev *mdev; + u32 mac_rev; + int ret; + + mdev = mt76_alloc_device(&usb_intf->dev, sizeof(*dev), &mt76x0u_ops, + &drv_ops); + if (!mdev) + return -ENOMEM; + + dev = container_of(mdev, struct mt76x02_dev, mt76); + mutex_init(&dev->phy_mutex); + + /* Quirk for Archer T1U */ + if (id->driver_info) + dev->no_2ghz = true; + + usb_dev = usb_get_dev(usb_dev); + usb_reset_device(usb_dev); + + usb_set_intfdata(usb_intf, dev); + + mt76x02u_init_mcu(mdev); + ret = mt76u_init(mdev, usb_intf); + if (ret) + goto err; + + /* Disable the HW, otherwise MCU fail to initialize on hot reboot */ + mt76x0_chip_onoff(dev, false, false); + + if (!mt76x02_wait_for_mac(mdev)) { + ret = -ETIMEDOUT; + goto err; + } + + mdev->rev = mt76_rr(dev, MT_ASIC_VERSION); + mac_rev = mt76_rr(dev, MT_MAC_CSR0); + dev_info(mdev->dev, "ASIC revision: %08x MAC revision: %08x\n", + mdev->rev, mac_rev); + if (!is_mt76x0(dev)) { + ret = -ENODEV; + goto err; + } + + /* Note: vendor driver skips this check for MT76X0U */ + if (!(mt76_rr(dev, MT_EFUSE_CTRL) & MT_EFUSE_CTRL_SEL)) + dev_warn(mdev->dev, "Warning: eFUSE not present\n"); + + ret = mt76x0u_register_device(dev); + if (ret < 0) + goto err; + + return 0; + +err: + usb_set_intfdata(usb_intf, NULL); + usb_put_dev(interface_to_usbdev(usb_intf)); + mt76u_queues_deinit(&dev->mt76); + mt76_free_device(&dev->mt76); + + return ret; +} + +static void mt76x0_disconnect(struct usb_interface *usb_intf) +{ + struct mt76x02_dev *dev = usb_get_intfdata(usb_intf); + bool initialized = test_bit(MT76_STATE_INITIALIZED, &dev->mphy.state); + + if (!initialized) + return; + + ieee80211_unregister_hw(dev->mt76.hw); + mt76x0u_cleanup(dev); + + usb_set_intfdata(usb_intf, NULL); + usb_put_dev(interface_to_usbdev(usb_intf)); + + mt76_free_device(&dev->mt76); +} + +static int __maybe_unused mt76x0_suspend(struct usb_interface *usb_intf, + pm_message_t state) +{ + struct mt76x02_dev *dev = usb_get_intfdata(usb_intf); + + mt76u_stop_rx(&dev->mt76); + clear_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state); + mt76x0_chip_onoff(dev, false, false); + + return 0; +} + +static int __maybe_unused mt76x0_resume(struct usb_interface *usb_intf) +{ + struct mt76x02_dev *dev = usb_get_intfdata(usb_intf); + int ret; + + ret = mt76u_resume_rx(&dev->mt76); + if (ret < 0) + goto err; + + ret = mt76x0u_init_hardware(dev, false); + if (ret) + goto err; + + return 0; +err: + mt76x0u_cleanup(dev); + return ret; +} + +MODULE_DEVICE_TABLE(usb, mt76x0_device_table); +MODULE_FIRMWARE(MT7610E_FIRMWARE); +MODULE_FIRMWARE(MT7610U_FIRMWARE); +MODULE_LICENSE("GPL"); + +static struct usb_driver mt76x0_driver = { + .name = KBUILD_MODNAME, + .id_table = mt76x0_device_table, + .probe = mt76x0u_probe, + .disconnect = mt76x0_disconnect, + .suspend = mt76x0_suspend, + .resume = mt76x0_resume, + .reset_resume = mt76x0_resume, + .soft_unbind = 1, + .disable_hub_initiated_lpm = 1, +}; +module_usb_driver(mt76x0_driver); |