387 lines
8.6 KiB
C
387 lines
8.6 KiB
C
// 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 "mac.h"
|
|
|
|
static const struct usb_device_id mt7921u_device_table[] = {
|
|
{ USB_DEVICE_AND_INTERFACE_INFO(0x0e8d, 0x7961, 0xff, 0xff, 0xff) },
|
|
{ },
|
|
};
|
|
|
|
static u32 mt7921u_rr(struct mt76_dev *dev, u32 addr)
|
|
{
|
|
u32 ret;
|
|
|
|
mutex_lock(&dev->usb.usb_ctrl_mtx);
|
|
ret = ___mt76u_rr(dev, MT_VEND_READ_EXT,
|
|
USB_DIR_IN | MT_USB_TYPE_VENDOR, addr);
|
|
mutex_unlock(&dev->usb.usb_ctrl_mtx);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void mt7921u_wr(struct mt76_dev *dev, u32 addr, u32 val)
|
|
{
|
|
mutex_lock(&dev->usb.usb_ctrl_mtx);
|
|
___mt76u_wr(dev, MT_VEND_WRITE_EXT,
|
|
USB_DIR_OUT | MT_USB_TYPE_VENDOR, addr, val);
|
|
mutex_unlock(&dev->usb.usb_ctrl_mtx);
|
|
}
|
|
|
|
static u32 mt7921u_rmw(struct mt76_dev *dev, u32 addr,
|
|
u32 mask, u32 val)
|
|
{
|
|
mutex_lock(&dev->usb.usb_ctrl_mtx);
|
|
val |= ___mt76u_rr(dev, MT_VEND_READ_EXT,
|
|
USB_DIR_IN | MT_USB_TYPE_VENDOR, addr) & ~mask;
|
|
___mt76u_wr(dev, MT_VEND_WRITE_EXT,
|
|
USB_DIR_OUT | MT_USB_TYPE_VENDOR, addr, val);
|
|
mutex_unlock(&dev->usb.usb_ctrl_mtx);
|
|
|
|
return val;
|
|
}
|
|
|
|
static void mt7921u_copy(struct mt76_dev *dev, u32 offset,
|
|
const void *data, int len)
|
|
{
|
|
struct mt76_usb *usb = &dev->usb;
|
|
int ret, i = 0, batch_len;
|
|
const u8 *val = data;
|
|
|
|
len = round_up(len, 4);
|
|
|
|
mutex_lock(&usb->usb_ctrl_mtx);
|
|
while (i < len) {
|
|
batch_len = min_t(int, usb->data_len, len - i);
|
|
memcpy(usb->data, val + i, batch_len);
|
|
ret = __mt76u_vendor_request(dev, MT_VEND_WRITE_EXT,
|
|
USB_DIR_OUT | MT_USB_TYPE_VENDOR,
|
|
(offset + i) >> 16, offset + i,
|
|
usb->data, batch_len);
|
|
if (ret < 0)
|
|
break;
|
|
|
|
i += batch_len;
|
|
}
|
|
mutex_unlock(&usb->usb_ctrl_mtx);
|
|
}
|
|
|
|
int mt7921u_mcu_power_on(struct mt7921_dev *dev)
|
|
{
|
|
int ret;
|
|
|
|
ret = mt76u_vendor_request(&dev->mt76, MT_VEND_POWER_ON,
|
|
USB_DIR_OUT | MT_USB_TYPE_VENDOR,
|
|
0x0, 0x1, NULL, 0);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (!mt76_poll_msec(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_PWR_ON,
|
|
MT_TOP_MISC2_FW_PWR_ON, 500)) {
|
|
dev_err(dev->mt76.dev, "Timeout for power on\n");
|
|
ret = -EIO;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
mt7921u_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb,
|
|
int cmd, int *seq)
|
|
{
|
|
struct mt7921_dev *dev = container_of(mdev, struct mt7921_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;
|
|
|
|
mt7921_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 mt7921_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,
|
|
.mcu_restart = mt76_connac_mcu_restart,
|
|
};
|
|
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 void mt7921u_stop(struct ieee80211_hw *hw)
|
|
{
|
|
struct mt7921_dev *dev = mt7921_hw_dev(hw);
|
|
|
|
mt76u_stop_tx(&dev->mt76);
|
|
mt7921_stop(hw);
|
|
}
|
|
|
|
static void mt7921u_cleanup(struct mt7921_dev *dev)
|
|
{
|
|
clear_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
|
|
mt7921u_wfsys_reset(dev);
|
|
skb_queue_purge(&dev->mt76.mcu.res_q);
|
|
mt76u_queues_deinit(&dev->mt76);
|
|
}
|
|
|
|
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,
|
|
.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_ps = mt7921_sta_ps,
|
|
.sta_add = mt7921_mac_sta_add,
|
|
.sta_assoc = mt7921_mac_sta_assoc,
|
|
.sta_remove = mt7921_mac_sta_remove,
|
|
.update_survey = mt7921_update_channel,
|
|
};
|
|
static const struct mt7921_hif_ops hif_ops = {
|
|
.mcu_init = mt7921u_mcu_init,
|
|
.init_reset = mt7921u_init_reset,
|
|
.reset = mt7921u_mac_reset,
|
|
};
|
|
static struct mt76_bus_ops bus_ops = {
|
|
.rr = mt7921u_rr,
|
|
.wr = mt7921u_wr,
|
|
.rmw = mt7921u_rmw,
|
|
.read_copy = mt76u_read_copy,
|
|
.write_copy = mt7921u_copy,
|
|
.type = MT76_BUS_USB,
|
|
};
|
|
struct usb_device *udev = interface_to_usbdev(usb_intf);
|
|
struct ieee80211_ops *ops;
|
|
struct ieee80211_hw *hw;
|
|
struct mt7921_dev *dev;
|
|
struct mt76_dev *mdev;
|
|
int ret;
|
|
|
|
ops = devm_kmemdup(&usb_intf->dev, &mt7921_ops, sizeof(mt7921_ops),
|
|
GFP_KERNEL);
|
|
if (!ops)
|
|
return -ENOMEM;
|
|
|
|
ops->stop = mt7921u_stop;
|
|
|
|
mdev = mt76_alloc_device(&usb_intf->dev, sizeof(*dev), ops, &drv_ops);
|
|
if (!mdev)
|
|
return -ENOMEM;
|
|
|
|
dev = container_of(mdev, struct mt7921_dev, mt76);
|
|
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 = mt7921u_wfsys_reset(dev);
|
|
if (ret)
|
|
goto error;
|
|
}
|
|
|
|
ret = mt7921u_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 = mt7921u_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;
|
|
}
|
|
|
|
static void mt7921u_disconnect(struct usb_interface *usb_intf)
|
|
{
|
|
struct mt7921_dev *dev = usb_get_intfdata(usb_intf);
|
|
|
|
cancel_work_sync(&dev->init_work);
|
|
if (!test_bit(MT76_STATE_INITIALIZED, &dev->mphy.state))
|
|
return;
|
|
|
|
mt76_unregister_device(&dev->mt76);
|
|
mt7921u_cleanup(dev);
|
|
|
|
usb_set_intfdata(usb_intf, NULL);
|
|
usb_put_dev(interface_to_usbdev(usb_intf));
|
|
|
|
mt76_free_device(&dev->mt76);
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int mt7921u_suspend(struct usb_interface *intf, pm_message_t state)
|
|
{
|
|
struct mt7921_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)
|
|
mt7921_reset(&dev->mt76);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int mt7921u_resume(struct usb_interface *intf)
|
|
{
|
|
struct mt7921_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 || mt7921_dma_need_reinit(dev)) {
|
|
err = mt7921u_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)
|
|
mt7921_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 = mt7921u_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_AUTHOR("Lorenzo Bianconi <lorenzo@kernel.org>");
|
|
MODULE_LICENSE("Dual BSD/GPL");
|