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// SPDX-License-Identifier: ISC
/* Copyright (C) 2022 MediaTek Inc.
*
* Author: Lorenzo Bianconi <lorenzo@kernel.org>
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/usb.h>
#include "mt7921.h"
#include "mcu.h"
#include "../mt76_connac2_mac.h"
static const struct usb_device_id mt7921u_device_table[] = {
{ USB_DEVICE_AND_INTERFACE_INFO(0x0e8d, 0x7961, 0xff, 0xff, 0xff),
.driver_info = (kernel_ulong_t)MT7921_FIRMWARE_WM },
/* Comfast CF-952AX */
{ USB_DEVICE_AND_INTERFACE_INFO(0x3574, 0x6211, 0xff, 0xff, 0xff),
.driver_info = (kernel_ulong_t)MT7921_FIRMWARE_WM },
/* Netgear, Inc. [A8000,AXE3000] */
{ USB_DEVICE_AND_INTERFACE_INFO(0x0846, 0x9060, 0xff, 0xff, 0xff),
.driver_info = (kernel_ulong_t)MT7921_FIRMWARE_WM },
{ },
};
static int
mt7921u_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 = mt76_connac2_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;
mt792x_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 mt7921u_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 = mt7921u_mcu_send_message,
.mcu_parse_response = mt7921_mcu_parse_response,
};
int ret;
dev->mt76.mcu_ops = &mcu_ops;
mt76_set(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN);
ret = mt7921_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 int mt7921u_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 = mt7921_run_firmware(dev);
if (err)
goto out;
mt76_clear(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN);
err = mt7921_mcu_set_eeprom(dev);
if (err)
goto out;
err = mt7921_mac_init(dev);
if (err)
goto out;
err = __mt7921_start(&dev->phy);
out:
clear_bit(MT76_RESET, &dev->mphy.state);
mt76_worker_enable(&dev->mt76.tx_worker);
return err;
}
static int mt7921u_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 = mt7921_usb_sdio_tx_prepare_skb,
.tx_complete_skb = mt7921_usb_sdio_tx_complete_skb,
.tx_status_data = mt7921_usb_sdio_tx_status_data,
.rx_skb = mt7921_queue_rx_skb,
.rx_check = mt7921_rx_check,
.sta_add = mt7921_mac_sta_add,
.sta_assoc = mt7921_mac_sta_assoc,
.sta_remove = mt7921_mac_sta_remove,
.update_survey = mt792x_update_channel,
};
static const struct mt792x_hif_ops hif_ops = {
.mcu_init = mt7921u_mcu_init,
.init_reset = mt792xu_init_reset,
.reset = mt7921u_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, &mt7921_ops,
(void *)id->driver_info, &features);
if (!ops)
return -ENOMEM;
ops->stop = mt792xu_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 = mt7921_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 mt7921u_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 mt7921u_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, mt7921u_device_table);
MODULE_FIRMWARE(MT7921_FIRMWARE_WM);
MODULE_FIRMWARE(MT7921_ROM_PATCH);
static struct usb_driver mt7921u_driver = {
.name = KBUILD_MODNAME,
.id_table = mt7921u_device_table,
.probe = mt7921u_probe,
.disconnect = mt792xu_disconnect,
#ifdef CONFIG_PM
.suspend = mt7921u_suspend,
.resume = mt7921u_resume,
.reset_resume = mt7921u_resume,
#endif /* CONFIG_PM */
.soft_unbind = 1,
.disable_hub_initiated_lpm = 1,
};
module_usb_driver(mt7921u_driver);
MODULE_DESCRIPTION("MediaTek MT7921U (USB) wireless driver");
MODULE_AUTHOR("Lorenzo Bianconi <lorenzo@kernel.org>");
MODULE_LICENSE("Dual BSD/GPL");
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