(Patches split into one patch per file for easier review, but the final
commit will be one big patch. See the cover letter for more info.)
Co-developed-by: Lorenzo Bianconi <lorenzo@xxxxxxxxxx>
Signed-off-by: Lorenzo Bianconi <lorenzo@xxxxxxxxxx>
Signed-off-by: Deren Wu <deren.wu@xxxxxxxxxxxx>
---
.../net/wireless/mediatek/mt76/mt7925/usb.c | 340 ++++++++++++++++++
1 file changed, 340 insertions(+)
create mode 100644 drivers/net/wireless/mediatek/mt76/mt7925/usb.c
diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/usb.c b/drivers/net/wireless/mediatek/mt76/mt7925/usb.c
new file mode 100644
index 000000000000..6cbcecabf40e
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/usb.c
@@ -0,0 +1,340 @@
+// SPDX-License-Identifier: ISC
+/* Copyright (C) 2023 MediaTek Inc. */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+
+#include "mt7925.h"
+#include "mcu.h"
+#include "mac.h"
+
+static const struct usb_device_id mt7925u_device_table[] = {
+ { USB_DEVICE_AND_INTERFACE_INFO(0x0e8d, 0x7925, 0xff, 0xff, 0xff),
+ .driver_info = (kernel_ulong_t)MT7925_FIRMWARE_WM },
+ { },
+};
+
+static int
+mt7925u_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb,
+ int cmd, int *seq)
+{
+ struct mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76);
+ u32 pad, ep;
+ int ret;
+
+ ret = mt7925_mcu_fill_message(mdev, skb, cmd, seq);
+ if (ret)
+ return ret;
+
+ mdev->mcu.timeout = 3 * HZ;
+
+ if (cmd != MCU_CMD(FW_SCATTER))
+ ep = MT_EP_OUT_INBAND_CMD;
+ else
+ ep = MT_EP_OUT_AC_BE;
+
+ mt7925_skb_add_usb_sdio_hdr(dev, skb, 0);
+ pad = round_up(skb->len, 4) + 4 - skb->len;
+ __skb_put_zero(skb, pad);
+
+ ret = mt76u_bulk_msg(&dev->mt76, skb->data, skb->len, NULL,
+ 1000, ep);
+ dev_kfree_skb(skb);
+
+ return ret;
+}
+
+static int mt7925u_mcu_init(struct mt792x_dev *dev)
+{
+ static const struct mt76_mcu_ops mcu_ops = {
+ .headroom = MT_SDIO_HDR_SIZE +
+ sizeof(struct mt76_connac2_mcu_txd),
+ .tailroom = MT_USB_TAIL_SIZE,
+ .mcu_skb_send_msg = mt7925u_mcu_send_message,
+ .mcu_parse_response = mt7925_mcu_parse_response,
+ };
+ int ret;
+
+ dev->mt76.mcu_ops = &mcu_ops;
+
+ mt76_set(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN);
+ ret = mt7925_run_firmware(dev);
+ if (ret)
+ return ret;
+
+ set_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state);
+ mt76_clear(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN);
+
+ return 0;
+}
+
+static void mt7925u_stop(struct ieee80211_hw *hw)
+{
+ struct mt792x_dev *dev = mt792x_hw_dev(hw);
+
+ mt76u_stop_tx(&dev->mt76);
+ mt7925_stop(hw);
+}
+
+static int mt7925u_mac_reset(struct mt792x_dev *dev)
+{
+ int err;
+
+ mt76_txq_schedule_all(&dev->mphy);
+ mt76_worker_disable(&dev->mt76.tx_worker);
+
+ set_bit(MT76_RESET, &dev->mphy.state);
+ set_bit(MT76_MCU_RESET, &dev->mphy.state);
+
+ wake_up(&dev->mt76.mcu.wait);
+ skb_queue_purge(&dev->mt76.mcu.res_q);
+
+ mt76u_stop_rx(&dev->mt76);
+ mt76u_stop_tx(&dev->mt76);
+
+ mt792xu_wfsys_reset(dev);
+
+ clear_bit(MT76_MCU_RESET, &dev->mphy.state);
+ err = mt76u_resume_rx(&dev->mt76);
+ if (err)
+ goto out;
+
+ err = mt792xu_mcu_power_on(dev);
+ if (err)
+ goto out;
+
+ err = mt792xu_dma_init(dev, false);
+ if (err)
+ goto out;
+
+ mt76_wr(dev, MT_SWDEF_MODE, MT_SWDEF_NORMAL_MODE);
+ mt76_set(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN);
+
+ err = mt7925_run_firmware(dev);
+ if (err)
+ goto out;
+
+ mt76_clear(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN);
+
+ err = mt7925_mcu_set_eeprom(dev);
+ if (err)
+ goto out;
+
+ err = mt7925_mac_init(dev);
+ if (err)
+ goto out;
+
+ err = __mt7925_start(&dev->phy);
+out:
+ clear_bit(MT76_RESET, &dev->mphy.state);
+
+ mt76_worker_enable(&dev->mt76.tx_worker);
+
+ return err;
+}
+
+static int mt7925u_probe(struct usb_interface *usb_intf,
+ const struct usb_device_id *id)
+{
+ static const struct mt76_driver_ops drv_ops = {
+ .txwi_size = MT_SDIO_TXD_SIZE,
+ .drv_flags = MT_DRV_RX_DMA_HDR | MT_DRV_HW_MGMT_TXQ |
+ MT_DRV_AMSDU_OFFLOAD,
+ .survey_flags = SURVEY_INFO_TIME_TX |
+ SURVEY_INFO_TIME_RX |
+ SURVEY_INFO_TIME_BSS_RX,
+ .tx_prepare_skb = mt7925_usb_sdio_tx_prepare_skb,
+ .tx_complete_skb = mt7925_usb_sdio_tx_complete_skb,
+ .tx_status_data = mt7925_usb_sdio_tx_status_data,
+ .rx_skb = mt7925_queue_rx_skb,
+ .rx_check = mt7925_rx_check,
+ .sta_add = mt7925_mac_sta_add,
+ .sta_assoc = mt7925_mac_sta_assoc,
+ .sta_remove = mt7925_mac_sta_remove,
+ .update_survey = mt792x_update_channel,
+ };
+ static const struct mt792x_hif_ops hif_ops = {
+ .mcu_init = mt7925u_mcu_init,
+ .init_reset = mt792xu_init_reset,
+ .reset = mt7925u_mac_reset,
+ };
+ static struct mt76_bus_ops bus_ops = {
+ .rr = mt792xu_rr,
+ .wr = mt792xu_wr,
+ .rmw = mt792xu_rmw,
+ .read_copy = mt76u_read_copy,
+ .write_copy = mt792xu_copy,
+ .type = MT76_BUS_USB,
+ };
+ struct usb_device *udev = interface_to_usbdev(usb_intf);
+ struct ieee80211_ops *ops;
+ struct ieee80211_hw *hw;
+ struct mt792x_dev *dev;
+ struct mt76_dev *mdev;
+ u8 features;
+ int ret;
+
+ ops = mt792x_get_mac80211_ops(&usb_intf->dev, &mt7925_ops,
+ (void *)id->driver_info, &features);
+ if (!ops)
+ return -ENOMEM;
+
+ ops->stop = mt7925u_stop;
+
+ mdev = mt76_alloc_device(&usb_intf->dev, sizeof(*dev), ops, &drv_ops);
+ if (!mdev)
+ return -ENOMEM;
+
+ dev = container_of(mdev, struct mt792x_dev, mt76);
+ dev->fw_features = features;
+ dev->hif_ops = &hif_ops;
+
+ udev = usb_get_dev(udev);
+ usb_reset_device(udev);
+
+ usb_set_intfdata(usb_intf, dev);
+
+ ret = __mt76u_init(mdev, usb_intf, &bus_ops);
+ if (ret < 0)
+ goto error;
+
+ mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) |
+ (mt76_rr(dev, MT_HW_REV) & 0xff);
+ dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev);
+
+ if (mt76_get_field(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_N9_RDY)) {
+ ret = mt792xu_wfsys_reset(dev);
+ if (ret)
+ goto error;
+ }
+
+ ret = mt792xu_mcu_power_on(dev);
+ if (ret)
+ goto error;
+
+ ret = mt76u_alloc_mcu_queue(&dev->mt76);
+ if (ret)
+ goto error;
+
+ ret = mt76u_alloc_queues(&dev->mt76);
+ if (ret)
+ goto error;
+
+ ret = mt792xu_dma_init(dev, false);
+ if (ret)
+ goto error;
+
+ hw = mt76_hw(dev);
+ /* check hw sg support in order to enable AMSDU */
+ hw->max_tx_fragments = mdev->usb.sg_en ? MT_HW_TXP_MAX_BUF_NUM : 1;
+
+ ret = mt7925_register_device(dev);
+ if (ret)
+ goto error;
+
+ return 0;
+
+error:
+ mt76u_queues_deinit(&dev->mt76);
+
+ usb_set_intfdata(usb_intf, NULL);
+ usb_put_dev(interface_to_usbdev(usb_intf));
+
+ mt76_free_device(&dev->mt76);
+
+ return ret;
+}
+
+#ifdef CONFIG_PM
+static int mt7925u_suspend(struct usb_interface *intf, pm_message_t state)
+{
+ struct mt792x_dev *dev = usb_get_intfdata(intf);
+ struct mt76_connac_pm *pm = &dev->pm;
+ int err;
+
+ pm->suspended = true;
+ flush_work(&dev->reset_work);
+
+ err = mt76_connac_mcu_set_hif_suspend(&dev->mt76, true);
+ if (err)
+ goto failed;
+
+ mt76u_stop_rx(&dev->mt76);
+ mt76u_stop_tx(&dev->mt76);
+
+ return 0;
+
+failed:
+ pm->suspended = false;
+
+ if (err < 0)
+ mt792x_reset(&dev->mt76);
+
+ return err;
+}
+
+static int mt7925u_resume(struct usb_interface *intf)
+{
+ struct mt792x_dev *dev = usb_get_intfdata(intf);
+ struct mt76_connac_pm *pm = &dev->pm;
+ bool reinit = true;
+ int err, i;
+
+ for (i = 0; i < 10; i++) {
+ u32 val = mt76_rr(dev, MT_WF_SW_DEF_CR_USB_MCU_EVENT);
+
+ if (!(val & MT_WF_SW_SER_TRIGGER_SUSPEND)) {
+ reinit = false;
+ break;
+ }
+ if (val & MT_WF_SW_SER_DONE_SUSPEND) {
+ mt76_wr(dev, MT_WF_SW_DEF_CR_USB_MCU_EVENT, 0);
+ break;
+ }
+
+ msleep(20);
+ }
+
+ if (reinit || mt792x_dma_need_reinit(dev)) {
+ err = mt792xu_dma_init(dev, true);
+ if (err)
+ goto failed;
+ }
+
+ err = mt76u_resume_rx(&dev->mt76);
+ if (err < 0)
+ goto failed;
+
+ err = mt76_connac_mcu_set_hif_suspend(&dev->mt76, false);
+failed:
+ pm->suspended = false;
+
+ if (err < 0)
+ mt792x_reset(&dev->mt76);
+
+ return err;
+}
+#endif /* CONFIG_PM */
+
+MODULE_DEVICE_TABLE(usb, mt7925u_device_table);
+MODULE_FIRMWARE(MT7925_FIRMWARE_WM);
+MODULE_FIRMWARE(MT7925_ROM_PATCH);
+
+static struct usb_driver mt7925u_driver = {
+ .name = KBUILD_MODNAME,
+ .id_table = mt7925u_device_table,
+ .probe = mt7925u_probe,
+ .disconnect = mt792xu_disconnect,
+#ifdef CONFIG_PM
+ .suspend = mt7925u_suspend,
+ .resume = mt7925u_resume,
+ .reset_resume = mt7925u_resume,
+#endif /* CONFIG_PM */
+ .soft_unbind = 1,
+ .disable_hub_initiated_lpm = 1,
+};
+module_usb_driver(mt7925u_driver);
+
+MODULE_AUTHOR("Lorenzo Bianconi <lorenzo@xxxxxxxxxx>");
+MODULE_LICENSE("Dual BSD/GPL");
--
2.18.0
