410 lines
9.4 KiB
C
410 lines
9.4 KiB
C
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// SPDX-License-Identifier: ISC
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/* Copyright (C) 2022 MediaTek Inc.
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*
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* Author: Lorenzo Bianconi <lorenzo@kernel.org>
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/usb.h>
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#include "mt7921.h"
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#include "mcu.h"
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#include "mac.h"
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static const struct usb_device_id mt7921u_device_table[] = {
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{ USB_DEVICE_AND_INTERFACE_INFO(0x0e8d, 0x7961, 0xff, 0xff, 0xff),
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.driver_info = (kernel_ulong_t)MT7921_FIRMWARE_WM },
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/* Comfast CF-952AX */
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{ USB_DEVICE_AND_INTERFACE_INFO(0x3574, 0x6211, 0xff, 0xff, 0xff),
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.driver_info = (kernel_ulong_t)MT7921_FIRMWARE_WM },
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/* Netgear, Inc. [A8000,AXE3000] */
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{ USB_DEVICE_AND_INTERFACE_INFO(0x0846, 0x9060, 0xff, 0xff, 0xff),
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.driver_info = (kernel_ulong_t)MT7921_FIRMWARE_WM },
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{ },
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};
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static u32 mt7921u_rr(struct mt76_dev *dev, u32 addr)
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{
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u32 ret;
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mutex_lock(&dev->usb.usb_ctrl_mtx);
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ret = ___mt76u_rr(dev, MT_VEND_READ_EXT,
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USB_DIR_IN | MT_USB_TYPE_VENDOR, addr);
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mutex_unlock(&dev->usb.usb_ctrl_mtx);
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return ret;
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}
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static void mt7921u_wr(struct mt76_dev *dev, u32 addr, u32 val)
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{
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mutex_lock(&dev->usb.usb_ctrl_mtx);
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___mt76u_wr(dev, MT_VEND_WRITE_EXT,
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USB_DIR_OUT | MT_USB_TYPE_VENDOR, addr, val);
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mutex_unlock(&dev->usb.usb_ctrl_mtx);
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}
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static u32 mt7921u_rmw(struct mt76_dev *dev, u32 addr,
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u32 mask, u32 val)
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{
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mutex_lock(&dev->usb.usb_ctrl_mtx);
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val |= ___mt76u_rr(dev, MT_VEND_READ_EXT,
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USB_DIR_IN | MT_USB_TYPE_VENDOR, addr) & ~mask;
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___mt76u_wr(dev, MT_VEND_WRITE_EXT,
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USB_DIR_OUT | MT_USB_TYPE_VENDOR, addr, val);
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mutex_unlock(&dev->usb.usb_ctrl_mtx);
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return val;
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}
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static void mt7921u_copy(struct mt76_dev *dev, u32 offset,
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const void *data, int len)
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{
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struct mt76_usb *usb = &dev->usb;
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int ret, i = 0, batch_len;
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const u8 *val = data;
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len = round_up(len, 4);
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mutex_lock(&usb->usb_ctrl_mtx);
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while (i < len) {
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batch_len = min_t(int, usb->data_len, len - i);
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memcpy(usb->data, val + i, batch_len);
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ret = __mt76u_vendor_request(dev, MT_VEND_WRITE_EXT,
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USB_DIR_OUT | MT_USB_TYPE_VENDOR,
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(offset + i) >> 16, offset + i,
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usb->data, batch_len);
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if (ret < 0)
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break;
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i += batch_len;
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}
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mutex_unlock(&usb->usb_ctrl_mtx);
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}
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int mt7921u_mcu_power_on(struct mt7921_dev *dev)
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{
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int ret;
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ret = mt76u_vendor_request(&dev->mt76, MT_VEND_POWER_ON,
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USB_DIR_OUT | MT_USB_TYPE_VENDOR,
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0x0, 0x1, NULL, 0);
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if (ret)
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return ret;
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if (!mt76_poll_msec(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_PWR_ON,
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MT_TOP_MISC2_FW_PWR_ON, 500)) {
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dev_err(dev->mt76.dev, "Timeout for power on\n");
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ret = -EIO;
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}
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return ret;
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}
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static int
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mt7921u_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb,
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int cmd, int *seq)
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{
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struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
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u32 pad, ep;
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int ret;
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ret = mt76_connac2_mcu_fill_message(mdev, skb, cmd, seq);
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if (ret)
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return ret;
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mdev->mcu.timeout = 3 * HZ;
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if (cmd != MCU_CMD(FW_SCATTER))
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ep = MT_EP_OUT_INBAND_CMD;
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else
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ep = MT_EP_OUT_AC_BE;
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mt7921_skb_add_usb_sdio_hdr(dev, skb, 0);
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pad = round_up(skb->len, 4) + 4 - skb->len;
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__skb_put_zero(skb, pad);
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ret = mt76u_bulk_msg(&dev->mt76, skb->data, skb->len, NULL,
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1000, ep);
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dev_kfree_skb(skb);
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return ret;
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}
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static int mt7921u_mcu_init(struct mt7921_dev *dev)
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{
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static const struct mt76_mcu_ops mcu_ops = {
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.headroom = MT_SDIO_HDR_SIZE +
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sizeof(struct mt76_connac2_mcu_txd),
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.tailroom = MT_USB_TAIL_SIZE,
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.mcu_skb_send_msg = mt7921u_mcu_send_message,
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.mcu_parse_response = mt7921_mcu_parse_response,
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};
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int ret;
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dev->mt76.mcu_ops = &mcu_ops;
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mt76_set(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN);
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ret = mt7921_run_firmware(dev);
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if (ret)
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return ret;
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set_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state);
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mt76_clear(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN);
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return 0;
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}
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static void mt7921u_stop(struct ieee80211_hw *hw)
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{
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struct mt7921_dev *dev = mt7921_hw_dev(hw);
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mt76u_stop_tx(&dev->mt76);
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mt7921_stop(hw);
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}
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static void mt7921u_cleanup(struct mt7921_dev *dev)
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{
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clear_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
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mt7921u_wfsys_reset(dev);
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skb_queue_purge(&dev->mt76.mcu.res_q);
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mt76u_queues_deinit(&dev->mt76);
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}
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static int mt7921u_probe(struct usb_interface *usb_intf,
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const struct usb_device_id *id)
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{
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static const struct mt76_driver_ops drv_ops = {
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.txwi_size = MT_SDIO_TXD_SIZE,
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.drv_flags = MT_DRV_RX_DMA_HDR | MT_DRV_HW_MGMT_TXQ |
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MT_DRV_AMSDU_OFFLOAD,
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.survey_flags = SURVEY_INFO_TIME_TX |
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SURVEY_INFO_TIME_RX |
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SURVEY_INFO_TIME_BSS_RX,
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.tx_prepare_skb = mt7921_usb_sdio_tx_prepare_skb,
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.tx_complete_skb = mt7921_usb_sdio_tx_complete_skb,
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.tx_status_data = mt7921_usb_sdio_tx_status_data,
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.rx_skb = mt7921_queue_rx_skb,
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.rx_check = mt7921_rx_check,
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.sta_ps = mt7921_sta_ps,
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.sta_add = mt7921_mac_sta_add,
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.sta_assoc = mt7921_mac_sta_assoc,
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.sta_remove = mt7921_mac_sta_remove,
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.update_survey = mt7921_update_channel,
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};
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static const struct mt7921_hif_ops hif_ops = {
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.mcu_init = mt7921u_mcu_init,
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.init_reset = mt7921u_init_reset,
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.reset = mt7921u_mac_reset,
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};
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static struct mt76_bus_ops bus_ops = {
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.rr = mt7921u_rr,
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.wr = mt7921u_wr,
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.rmw = mt7921u_rmw,
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.read_copy = mt76u_read_copy,
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.write_copy = mt7921u_copy,
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.type = MT76_BUS_USB,
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};
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struct usb_device *udev = interface_to_usbdev(usb_intf);
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struct ieee80211_ops *ops;
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struct ieee80211_hw *hw;
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struct mt7921_dev *dev;
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struct mt76_dev *mdev;
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u8 features;
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int ret;
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features = mt7921_check_offload_capability(&usb_intf->dev, (const char *)
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id->driver_info);
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ops = devm_kmemdup(&usb_intf->dev, &mt7921_ops, sizeof(mt7921_ops),
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GFP_KERNEL);
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if (!ops)
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return -ENOMEM;
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if (!(features & MT7921_FW_CAP_CNM)) {
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ops->remain_on_channel = NULL;
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ops->cancel_remain_on_channel = NULL;
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ops->add_chanctx = NULL;
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ops->remove_chanctx = NULL;
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ops->change_chanctx = NULL;
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ops->assign_vif_chanctx = NULL;
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ops->unassign_vif_chanctx = NULL;
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ops->mgd_prepare_tx = NULL;
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ops->mgd_complete_tx = NULL;
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}
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ops->stop = mt7921u_stop;
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mdev = mt76_alloc_device(&usb_intf->dev, sizeof(*dev), ops, &drv_ops);
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if (!mdev)
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return -ENOMEM;
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dev = container_of(mdev, struct mt7921_dev, mt76);
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dev->fw_features = features;
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dev->hif_ops = &hif_ops;
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udev = usb_get_dev(udev);
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usb_reset_device(udev);
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usb_set_intfdata(usb_intf, dev);
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ret = __mt76u_init(mdev, usb_intf, &bus_ops);
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if (ret < 0)
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goto error;
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mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) |
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(mt76_rr(dev, MT_HW_REV) & 0xff);
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dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev);
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if (mt76_get_field(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_N9_RDY)) {
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ret = mt7921u_wfsys_reset(dev);
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if (ret)
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goto error;
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}
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ret = mt7921u_mcu_power_on(dev);
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if (ret)
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goto error;
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ret = mt76u_alloc_mcu_queue(&dev->mt76);
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if (ret)
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goto error;
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ret = mt76u_alloc_queues(&dev->mt76);
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if (ret)
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goto error;
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ret = mt7921u_dma_init(dev, false);
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if (ret)
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goto error;
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hw = mt76_hw(dev);
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/* check hw sg support in order to enable AMSDU */
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hw->max_tx_fragments = mdev->usb.sg_en ? MT_HW_TXP_MAX_BUF_NUM : 1;
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ret = mt7921_register_device(dev);
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if (ret)
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goto error;
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return 0;
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error:
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mt76u_queues_deinit(&dev->mt76);
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usb_set_intfdata(usb_intf, NULL);
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usb_put_dev(interface_to_usbdev(usb_intf));
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mt76_free_device(&dev->mt76);
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return ret;
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}
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static void mt7921u_disconnect(struct usb_interface *usb_intf)
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{
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struct mt7921_dev *dev = usb_get_intfdata(usb_intf);
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cancel_work_sync(&dev->init_work);
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if (!test_bit(MT76_STATE_INITIALIZED, &dev->mphy.state))
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return;
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mt76_unregister_device(&dev->mt76);
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mt7921u_cleanup(dev);
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usb_set_intfdata(usb_intf, NULL);
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usb_put_dev(interface_to_usbdev(usb_intf));
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mt76_free_device(&dev->mt76);
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}
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#ifdef CONFIG_PM
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static int mt7921u_suspend(struct usb_interface *intf, pm_message_t state)
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{
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struct mt7921_dev *dev = usb_get_intfdata(intf);
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struct mt76_connac_pm *pm = &dev->pm;
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int err;
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pm->suspended = true;
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flush_work(&dev->reset_work);
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err = mt76_connac_mcu_set_hif_suspend(&dev->mt76, true);
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if (err)
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goto failed;
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mt76u_stop_rx(&dev->mt76);
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mt76u_stop_tx(&dev->mt76);
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return 0;
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failed:
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pm->suspended = false;
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if (err < 0)
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mt7921_reset(&dev->mt76);
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return err;
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}
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static int mt7921u_resume(struct usb_interface *intf)
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{
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struct mt7921_dev *dev = usb_get_intfdata(intf);
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struct mt76_connac_pm *pm = &dev->pm;
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bool reinit = true;
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int err, i;
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for (i = 0; i < 10; i++) {
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u32 val = mt76_rr(dev, MT_WF_SW_DEF_CR_USB_MCU_EVENT);
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|
|
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");
|