drivers/net/wireless/mediatek/mt76/mt76x2u_mcu.c - hafnium/third_party/linux - Git at Google

 /*
  * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */

 #include <linux/firmware.h>

 #include "mt76x2u.h"
 #include "mt76x2_eeprom.h"

 #define MT_CMD_HDR_LEN			4
 #define MT_INBAND_PACKET_MAX_LEN	192
 #define MT_MCU_MEMMAP_WLAN		0x410000

 #define MCU_FW_URB_MAX_PAYLOAD		0x3900
 #define MCU_ROM_PATCH_MAX_PAYLOAD	2048

 #define MT76U_MCU_ILM_OFFSET		0x80000
 #define MT76U_MCU_DLM_OFFSET		0x110000
 #define MT76U_MCU_ROM_PATCH_OFFSET	0x90000

 static int
 mt76x2u_mcu_function_select(struct mt76x2_dev *dev, enum mcu_function func,
 			    u32 val)
 {
 	struct {
 		__le32 id;
 		__le32 value;
 	} __packed __aligned(4) msg = {
 		.id = cpu_to_le32(func),
 		.value = cpu_to_le32(val),
 	};
 	struct sk_buff *skb;

 	skb = mt76u_mcu_msg_alloc(&msg, sizeof(msg));
 	if (!skb)
 		return -ENOMEM;
 	return mt76u_mcu_send_msg(&dev->mt76, skb, CMD_FUN_SET_OP,
 				  func != Q_SELECT);
 }

 int mt76x2u_mcu_set_radio_state(struct mt76x2_dev *dev, bool val)
 {
 	struct {
 		__le32 mode;
 		__le32 level;
 	} __packed __aligned(4) msg = {
 		.mode = cpu_to_le32(val ? RADIO_ON : RADIO_OFF),
 		.level = cpu_to_le32(0),
 	};
 	struct sk_buff *skb;

 	skb = mt76u_mcu_msg_alloc(&msg, sizeof(msg));
 	if (!skb)
 		return -ENOMEM;
 	return mt76u_mcu_send_msg(&dev->mt76, skb, CMD_POWER_SAVING_OP,
 				  false);
 }

 int mt76x2u_mcu_load_cr(struct mt76x2_dev *dev, u8 type, u8 temp_level,
 			u8 channel)
 {
 	struct {
 		u8 cr_mode;
 		u8 temp;
 		u8 ch;
 		u8 _pad0;
 		__le32 cfg;
 	} __packed __aligned(4) msg = {
 		.cr_mode = type,
 		.temp = temp_level,
 		.ch = channel,
 	};
 	struct sk_buff *skb;
 	u32 val;

 	val = BIT(31);
 	val |= (mt76x2_eeprom_get(dev, MT_EE_NIC_CONF_0) >> 8) & 0x00ff;
 	val |= (mt76x2_eeprom_get(dev, MT_EE_NIC_CONF_1) << 8) & 0xff00;
 	msg.cfg = cpu_to_le32(val);

 	/* first set the channel without the extension channel info */
 	skb = mt76u_mcu_msg_alloc(&msg, sizeof(msg));
 	if (!skb)
 		return -ENOMEM;
 	return mt76u_mcu_send_msg(&dev->mt76, skb, CMD_LOAD_CR, true);
 }

 int mt76x2u_mcu_set_channel(struct mt76x2_dev *dev, u8 channel, u8 bw,
 			    u8 bw_index, bool scan)
 {
 	struct {
 		u8 idx;
 		u8 scan;
 		u8 bw;
 		u8 _pad0;

 		__le16 chainmask;
 		u8 ext_chan;
 		u8 _pad1;

 	} __packed __aligned(4) msg = {
 		.idx = channel,
 		.scan = scan,
 		.bw = bw,
 		.chainmask = cpu_to_le16(dev->chainmask),
 	};
 	struct sk_buff *skb;

 	/* first set the channel without the extension channel info */
 	skb = mt76u_mcu_msg_alloc(&msg, sizeof(msg));
 	if (!skb)
 		return -ENOMEM;

 	mt76u_mcu_send_msg(&dev->mt76, skb, CMD_SWITCH_CHANNEL_OP, true);

 	usleep_range(5000, 10000);

 	msg.ext_chan = 0xe0 + bw_index;
 	skb = mt76u_mcu_msg_alloc(&msg, sizeof(msg));
 	if (!skb)
 		return -ENOMEM;

 	return mt76u_mcu_send_msg(&dev->mt76, skb, CMD_SWITCH_CHANNEL_OP, true);
 }

 int mt76x2u_mcu_calibrate(struct mt76x2_dev *dev, enum mcu_calibration type,
 			  u32 val)
 {
 	struct {
 		__le32 id;
 		__le32 value;
 	} __packed __aligned(4) msg = {
 		.id = cpu_to_le32(type),
 		.value = cpu_to_le32(val),
 	};
 	struct sk_buff *skb;

 	skb = mt76u_mcu_msg_alloc(&msg, sizeof(msg));
 	if (!skb)
 		return -ENOMEM;
 	return mt76u_mcu_send_msg(&dev->mt76, skb, CMD_CALIBRATION_OP, true);
 }

 int mt76x2u_mcu_init_gain(struct mt76x2_dev *dev, u8 channel, u32 gain,
 			  bool force)
 {
 	struct {
 		__le32 channel;
 		__le32 gain_val;
 	} __packed __aligned(4) msg = {
 		.channel = cpu_to_le32(channel),
 		.gain_val = cpu_to_le32(gain),
 	};
 	struct sk_buff *skb;

 	if (force)
 		msg.channel |= cpu_to_le32(BIT(31));

 	skb = mt76u_mcu_msg_alloc(&msg, sizeof(msg));
 	if (!skb)
 		return -ENOMEM;
 	return mt76u_mcu_send_msg(&dev->mt76, skb, CMD_INIT_GAIN_OP, true);
 }

 int mt76x2u_mcu_set_dynamic_vga(struct mt76x2_dev *dev, u8 channel, bool ap,
 				bool ext, int rssi, u32 false_cca)
 {
 	struct {
 		__le32 channel;
 		__le32 rssi_val;
 		__le32 false_cca_val;
 	} __packed __aligned(4) msg = {
 		.rssi_val = cpu_to_le32(rssi),
 		.false_cca_val = cpu_to_le32(false_cca),
 	};
 	struct sk_buff *skb;
 	u32 val = channel;

 	if (ap)
 		val |= BIT(31);
 	if (ext)
 		val |= BIT(30);
 	msg.channel = cpu_to_le32(val);

 	skb = mt76u_mcu_msg_alloc(&msg, sizeof(msg));
 	if (!skb)
 		return -ENOMEM;
 	return mt76u_mcu_send_msg(&dev->mt76, skb, CMD_DYNC_VGA_OP, true);
 }

 int mt76x2u_mcu_tssi_comp(struct mt76x2_dev *dev,
 			  struct mt76x2_tssi_comp *tssi_data)
 {
 	struct {
 		__le32 id;
 		struct mt76x2_tssi_comp data;
 	} __packed __aligned(4) msg = {
 		.id = cpu_to_le32(MCU_CAL_TSSI_COMP),
 		.data = *tssi_data,
 	};
 	struct sk_buff *skb;

 	skb = mt76u_mcu_msg_alloc(&msg, sizeof(msg));
 	if (!skb)
 		return -ENOMEM;
 	return mt76u_mcu_send_msg(&dev->mt76, skb, CMD_CALIBRATION_OP, true);
 }

 static void mt76x2u_mcu_load_ivb(struct mt76x2_dev *dev)
 {
 	mt76u_vendor_request(&dev->mt76, MT_VEND_DEV_MODE,
 			     USB_DIR_OUT | USB_TYPE_VENDOR,
 			     0x12, 0, NULL, 0);
 }

 static void mt76x2u_mcu_enable_patch(struct mt76x2_dev *dev)
 {
 	struct mt76_usb *usb = &dev->mt76.usb;
 	const u8 data[] = {
 		0x6f, 0xfc, 0x08, 0x01,
 		0x20, 0x04, 0x00, 0x00,
 		0x00, 0x09, 0x00,
 	};

 	memcpy(usb->data, data, sizeof(data));
 	mt76u_vendor_request(&dev->mt76, MT_VEND_DEV_MODE,
 			     USB_DIR_OUT | USB_TYPE_CLASS,
 			     0x12, 0, usb->data, sizeof(data));
 }

 static void mt76x2u_mcu_reset_wmt(struct mt76x2_dev *dev)
 {
 	struct mt76_usb *usb = &dev->mt76.usb;
 	u8 data[] = {
 		0x6f, 0xfc, 0x05, 0x01,
 		0x07, 0x01, 0x00, 0x04
 	};

 	memcpy(usb->data, data, sizeof(data));
 	mt76u_vendor_request(&dev->mt76, MT_VEND_DEV_MODE,
 			     USB_DIR_OUT | USB_TYPE_CLASS,
 			     0x12, 0, usb->data, sizeof(data));
 }

 static int mt76x2u_mcu_load_rom_patch(struct mt76x2_dev *dev)
 {
 	bool rom_protect = !is_mt7612(dev);
 	struct mt76x2_patch_header *hdr;
 	u32 val, patch_mask, patch_reg;
 	const struct firmware *fw;
 	int err;

 	if (rom_protect &&
 	    !mt76_poll_msec(dev, MT_MCU_SEMAPHORE_03, 1, 1, 600)) {
 		dev_err(dev->mt76.dev,
 			"could not get hardware semaphore for ROM PATCH\n");
 		return -ETIMEDOUT;
 	}

 	if (mt76xx_rev(dev) >= MT76XX_REV_E3) {
 		patch_mask = BIT(0);
 		patch_reg = MT_MCU_CLOCK_CTL;
 	} else {
 		patch_mask = BIT(1);
 		patch_reg = MT_MCU_COM_REG0;
 	}

 	if (rom_protect && (mt76_rr(dev, patch_reg) & patch_mask)) {
 		dev_info(dev->mt76.dev, "ROM patch already applied\n");
 		return 0;
 	}

 	err = request_firmware(&fw, MT7662U_ROM_PATCH, dev->mt76.dev);
 	if (err < 0)
 		return err;

 	if (!fw || !fw->data || fw->size <= sizeof(*hdr)) {
 		dev_err(dev->mt76.dev, "failed to load firmware\n");
 		err = -EIO;
 		goto out;
 	}

 	hdr = (struct mt76x2_patch_header *)fw->data;
 	dev_info(dev->mt76.dev, "ROM patch build: %.15s\n", hdr->build_time);

 	/* enable USB_DMA_CFG */
 	val = MT_USB_DMA_CFG_RX_BULK_EN |
 	      MT_USB_DMA_CFG_TX_BULK_EN |
 	      FIELD_PREP(MT_USB_DMA_CFG_RX_BULK_AGG_TOUT, 0x20);
 	mt76_wr(dev, MT_VEND_ADDR(CFG, MT_USB_U3DMA_CFG), val);

 	/* vendor reset */
 	mt76u_mcu_fw_reset(&dev->mt76);
 	usleep_range(5000, 10000);

 	/* enable FCE to send in-band cmd */
 	mt76_wr(dev, MT_FCE_PSE_CTRL, 0x1);
 	/* FCE tx_fs_base_ptr */
 	mt76_wr(dev, MT_TX_CPU_FROM_FCE_BASE_PTR, 0x400230);
 	/* FCE tx_fs_max_cnt */
 	mt76_wr(dev, MT_TX_CPU_FROM_FCE_MAX_COUNT, 0x1);
 	/* FCE pdma enable */
 	mt76_wr(dev, MT_FCE_PDMA_GLOBAL_CONF, 0x44);
 	/* FCE skip_fs_en */
 	mt76_wr(dev, MT_FCE_SKIP_FS, 0x3);

 	err = mt76u_mcu_fw_send_data(&dev->mt76, fw->data + sizeof(*hdr),
 				     fw->size - sizeof(*hdr),
 				     MCU_ROM_PATCH_MAX_PAYLOAD,
 				     MT76U_MCU_ROM_PATCH_OFFSET);
 	if (err < 0) {
 		err = -EIO;
 		goto out;
 	}

 	mt76x2u_mcu_enable_patch(dev);
 	mt76x2u_mcu_reset_wmt(dev);
 	mdelay(20);

 	if (!mt76_poll_msec(dev, patch_reg, patch_mask, patch_mask, 100)) {
 		dev_err(dev->mt76.dev, "failed to load ROM patch\n");
 		err = -ETIMEDOUT;
 	}

 out:
 	if (rom_protect)
 		mt76_wr(dev, MT_MCU_SEMAPHORE_03, 1);
 	release_firmware(fw);
 	return err;
 }

 static int mt76x2u_mcu_load_firmware(struct mt76x2_dev *dev)
 {
 	u32 val, dlm_offset = MT76U_MCU_DLM_OFFSET;
 	const struct mt76x2_fw_header *hdr;
 	int err, len, ilm_len, dlm_len;
 	const struct firmware *fw;

 	err = request_firmware(&fw, MT7662U_FIRMWARE, dev->mt76.dev);
 	if (err < 0)
 		return err;

 	if (!fw || !fw->data || fw->size < sizeof(*hdr)) {
 		err = -EINVAL;
 		goto out;
 	}

 	hdr = (const struct mt76x2_fw_header *)fw->data;
 	ilm_len = le32_to_cpu(hdr->ilm_len);
 	dlm_len = le32_to_cpu(hdr->dlm_len);
 	len = sizeof(*hdr) + ilm_len + dlm_len;
 	if (fw->size != len) {
 		err = -EINVAL;
 		goto out;
 	}

 	val = le16_to_cpu(hdr->fw_ver);
 	dev_info(dev->mt76.dev, "Firmware Version: %d.%d.%02d\n",
 		 (val >> 12) & 0xf, (val >> 8) & 0xf, val & 0xf);

 	val = le16_to_cpu(hdr->build_ver);
 	dev_info(dev->mt76.dev, "Build: %x\n", val);
 	dev_info(dev->mt76.dev, "Build Time: %.16s\n", hdr->build_time);

 	/* vendor reset */
 	mt76u_mcu_fw_reset(&dev->mt76);
 	usleep_range(5000, 10000);

 	/* enable USB_DMA_CFG */
 	val = MT_USB_DMA_CFG_RX_BULK_EN |
 	      MT_USB_DMA_CFG_TX_BULK_EN |
 	      FIELD_PREP(MT_USB_DMA_CFG_RX_BULK_AGG_TOUT, 0x20);
 	mt76_wr(dev, MT_VEND_ADDR(CFG, MT_USB_U3DMA_CFG), val);
 	/* enable FCE to send in-band cmd */
 	mt76_wr(dev, MT_FCE_PSE_CTRL, 0x1);
 	/* FCE tx_fs_base_ptr */
 	mt76_wr(dev, MT_TX_CPU_FROM_FCE_BASE_PTR, 0x400230);
 	/* FCE tx_fs_max_cnt */
 	mt76_wr(dev, MT_TX_CPU_FROM_FCE_MAX_COUNT, 0x1);
 	/* FCE pdma enable */
 	mt76_wr(dev, MT_FCE_PDMA_GLOBAL_CONF, 0x44);
 	/* FCE skip_fs_en */
 	mt76_wr(dev, MT_FCE_SKIP_FS, 0x3);

 	/* load ILM */
 	err = mt76u_mcu_fw_send_data(&dev->mt76, fw->data + sizeof(*hdr),
 				     ilm_len, MCU_FW_URB_MAX_PAYLOAD,
 				     MT76U_MCU_ILM_OFFSET);
 	if (err < 0) {
 		err = -EIO;
 		goto out;
 	}

 	/* load DLM */
 	if (mt76xx_rev(dev) >= MT76XX_REV_E3)
 		dlm_offset += 0x800;
 	err = mt76u_mcu_fw_send_data(&dev->mt76,
 				     fw->data + sizeof(*hdr) + ilm_len,
 				     dlm_len, MCU_FW_URB_MAX_PAYLOAD,
 				     dlm_offset);
 	if (err < 0) {
 		err = -EIO;
 		goto out;
 	}

 	mt76x2u_mcu_load_ivb(dev);
 	if (!mt76_poll_msec(dev, MT_MCU_COM_REG0, 1, 1, 100)) {
 		dev_err(dev->mt76.dev, "firmware failed to start\n");
 		err = -ETIMEDOUT;
 		goto out;
 	}

 	mt76_set(dev, MT_MCU_COM_REG0, BIT(1));
 	/* enable FCE to send in-band cmd */
 	mt76_wr(dev, MT_FCE_PSE_CTRL, 0x1);
 	dev_dbg(dev->mt76.dev, "firmware running\n");

 out:
 	release_firmware(fw);
 	return err;
 }

 int mt76x2u_mcu_fw_init(struct mt76x2_dev *dev)
 {
 	int err;

 	err = mt76x2u_mcu_load_rom_patch(dev);
 	if (err < 0)
 		return err;

 	return mt76x2u_mcu_load_firmware(dev);
 }

 int mt76x2u_mcu_init(struct mt76x2_dev *dev)
 {
 	int err;

 	err = mt76x2u_mcu_function_select(dev, Q_SELECT, 1);
 	if (err < 0)
 		return err;

 	return mt76x2u_mcu_set_radio_state(dev, true);
 }

 void mt76x2u_mcu_deinit(struct mt76x2_dev *dev)
 {
 	struct mt76_usb *usb = &dev->mt76.usb;

 	usb_kill_urb(usb->mcu.res.urb);
 	mt76u_buf_free(&usb->mcu.res);
 }
	/*
	* Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
	*
	* Permission to use, copy, modify, and/or distribute this software for any
	* purpose with or without fee is hereby granted, provided that the above
	* copyright notice and this permission notice appear in all copies.
	*
	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
	* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	*/

	#include <linux/firmware.h>

	#include "mt76x2u.h"
	#include "mt76x2_eeprom.h"

	#define MT_CMD_HDR_LEN 4
	#define MT_INBAND_PACKET_MAX_LEN 192
	#define MT_MCU_MEMMAP_WLAN 0x410000

	#define MCU_FW_URB_MAX_PAYLOAD 0x3900
	#define MCU_ROM_PATCH_MAX_PAYLOAD 2048

	#define MT76U_MCU_ILM_OFFSET 0x80000
	#define MT76U_MCU_DLM_OFFSET 0x110000
	#define MT76U_MCU_ROM_PATCH_OFFSET 0x90000

	static int
	mt76x2u_mcu_function_select(struct mt76x2_dev *dev, enum mcu_function func,
	u32 val)
	{
	struct {
	__le32 id;
	__le32 value;
	} __packed __aligned(4) msg = {
	.id = cpu_to_le32(func),
	.value = cpu_to_le32(val),
	};
	struct sk_buff *skb;

	skb = mt76u_mcu_msg_alloc(&msg, sizeof(msg));
	if (!skb)
	return -ENOMEM;
	return mt76u_mcu_send_msg(&dev->mt76, skb, CMD_FUN_SET_OP,
	func != Q_SELECT);
	}

	int mt76x2u_mcu_set_radio_state(struct mt76x2_dev *dev, bool val)
	{
	struct {
	__le32 mode;
	__le32 level;
	} __packed __aligned(4) msg = {
	.mode = cpu_to_le32(val ? RADIO_ON : RADIO_OFF),
	.level = cpu_to_le32(0),
	};
	struct sk_buff *skb;

	skb = mt76u_mcu_msg_alloc(&msg, sizeof(msg));
	if (!skb)
	return -ENOMEM;
	return mt76u_mcu_send_msg(&dev->mt76, skb, CMD_POWER_SAVING_OP,
	false);
	}

	int mt76x2u_mcu_load_cr(struct mt76x2_dev *dev, u8 type, u8 temp_level,
	u8 channel)
	{
	struct {
	u8 cr_mode;
	u8 temp;
	u8 ch;
	u8 _pad0;
	__le32 cfg;
	} __packed __aligned(4) msg = {
	.cr_mode = type,
	.temp = temp_level,
	.ch = channel,
	};
	struct sk_buff *skb;
	u32 val;

	val = BIT(31);
	val \|= (mt76x2_eeprom_get(dev, MT_EE_NIC_CONF_0) >> 8) & 0x00ff;
	val \|= (mt76x2_eeprom_get(dev, MT_EE_NIC_CONF_1) << 8) & 0xff00;
	msg.cfg = cpu_to_le32(val);

	/* first set the channel without the extension channel info */
	skb = mt76u_mcu_msg_alloc(&msg, sizeof(msg));
	if (!skb)
	return -ENOMEM;
	return mt76u_mcu_send_msg(&dev->mt76, skb, CMD_LOAD_CR, true);
	}

	int mt76x2u_mcu_set_channel(struct mt76x2_dev *dev, u8 channel, u8 bw,
	u8 bw_index, bool scan)
	{
	struct {
	u8 idx;
	u8 scan;
	u8 bw;
	u8 _pad0;

	__le16 chainmask;
	u8 ext_chan;
	u8 _pad1;

	} __packed __aligned(4) msg = {
	.idx = channel,
	.scan = scan,
	.bw = bw,
	.chainmask = cpu_to_le16(dev->chainmask),
	};
	struct sk_buff *skb;

	/* first set the channel without the extension channel info */
	skb = mt76u_mcu_msg_alloc(&msg, sizeof(msg));
	if (!skb)
	return -ENOMEM;

	mt76u_mcu_send_msg(&dev->mt76, skb, CMD_SWITCH_CHANNEL_OP, true);

	usleep_range(5000, 10000);

	msg.ext_chan = 0xe0 + bw_index;
	skb = mt76u_mcu_msg_alloc(&msg, sizeof(msg));
	if (!skb)
	return -ENOMEM;

	return mt76u_mcu_send_msg(&dev->mt76, skb, CMD_SWITCH_CHANNEL_OP, true);
	}

	int mt76x2u_mcu_calibrate(struct mt76x2_dev *dev, enum mcu_calibration type,
	u32 val)
	{
	struct {
	__le32 id;
	__le32 value;
	} __packed __aligned(4) msg = {
	.id = cpu_to_le32(type),
	.value = cpu_to_le32(val),
	};
	struct sk_buff *skb;

	skb = mt76u_mcu_msg_alloc(&msg, sizeof(msg));
	if (!skb)
	return -ENOMEM;
	return mt76u_mcu_send_msg(&dev->mt76, skb, CMD_CALIBRATION_OP, true);
	}

	int mt76x2u_mcu_init_gain(struct mt76x2_dev *dev, u8 channel, u32 gain,
	bool force)
	{
	struct {
	__le32 channel;
	__le32 gain_val;
	} __packed __aligned(4) msg = {
	.channel = cpu_to_le32(channel),
	.gain_val = cpu_to_le32(gain),
	};
	struct sk_buff *skb;

	if (force)
	msg.channel \|= cpu_to_le32(BIT(31));

	skb = mt76u_mcu_msg_alloc(&msg, sizeof(msg));
	if (!skb)
	return -ENOMEM;
	return mt76u_mcu_send_msg(&dev->mt76, skb, CMD_INIT_GAIN_OP, true);
	}

	int mt76x2u_mcu_set_dynamic_vga(struct mt76x2_dev *dev, u8 channel, bool ap,
	bool ext, int rssi, u32 false_cca)
	{
	struct {
	__le32 channel;
	__le32 rssi_val;
	__le32 false_cca_val;
	} __packed __aligned(4) msg = {
	.rssi_val = cpu_to_le32(rssi),
	.false_cca_val = cpu_to_le32(false_cca),
	};
	struct sk_buff *skb;
	u32 val = channel;

	if (ap)
	val \|= BIT(31);
	if (ext)
	val \|= BIT(30);
	msg.channel = cpu_to_le32(val);

	skb = mt76u_mcu_msg_alloc(&msg, sizeof(msg));
	if (!skb)
	return -ENOMEM;
	return mt76u_mcu_send_msg(&dev->mt76, skb, CMD_DYNC_VGA_OP, true);
	}

	int mt76x2u_mcu_tssi_comp(struct mt76x2_dev *dev,
	struct mt76x2_tssi_comp *tssi_data)
	{
	struct {
	__le32 id;
	struct mt76x2_tssi_comp data;
	} __packed __aligned(4) msg = {
	.id = cpu_to_le32(MCU_CAL_TSSI_COMP),
	.data = *tssi_data,
	};
	struct sk_buff *skb;

	skb = mt76u_mcu_msg_alloc(&msg, sizeof(msg));
	if (!skb)
	return -ENOMEM;
	return mt76u_mcu_send_msg(&dev->mt76, skb, CMD_CALIBRATION_OP, true);
	}

	static void mt76x2u_mcu_load_ivb(struct mt76x2_dev *dev)
	{
	mt76u_vendor_request(&dev->mt76, MT_VEND_DEV_MODE,
	USB_DIR_OUT \| USB_TYPE_VENDOR,
	0x12, 0, NULL, 0);
	}

	static void mt76x2u_mcu_enable_patch(struct mt76x2_dev *dev)
	{
	struct mt76_usb *usb = &dev->mt76.usb;
	const u8 data[] = {
	0x6f, 0xfc, 0x08, 0x01,
	0x20, 0x04, 0x00, 0x00,
	0x00, 0x09, 0x00,
	};

	memcpy(usb->data, data, sizeof(data));
	mt76u_vendor_request(&dev->mt76, MT_VEND_DEV_MODE,
	USB_DIR_OUT \| USB_TYPE_CLASS,
	0x12, 0, usb->data, sizeof(data));
	}

	static void mt76x2u_mcu_reset_wmt(struct mt76x2_dev *dev)
	{
	struct mt76_usb *usb = &dev->mt76.usb;
	u8 data[] = {
	0x6f, 0xfc, 0x05, 0x01,
	0x07, 0x01, 0x00, 0x04
	};

	memcpy(usb->data, data, sizeof(data));
	mt76u_vendor_request(&dev->mt76, MT_VEND_DEV_MODE,
	USB_DIR_OUT \| USB_TYPE_CLASS,
	0x12, 0, usb->data, sizeof(data));
	}

	static int mt76x2u_mcu_load_rom_patch(struct mt76x2_dev *dev)
	{
	bool rom_protect = !is_mt7612(dev);
	struct mt76x2_patch_header *hdr;
	u32 val, patch_mask, patch_reg;
	const struct firmware *fw;
	int err;

	if (rom_protect &&
	!mt76_poll_msec(dev, MT_MCU_SEMAPHORE_03, 1, 1, 600)) {
	dev_err(dev->mt76.dev,
	"could not get hardware semaphore for ROM PATCH\n");
	return -ETIMEDOUT;
	}

	if (mt76xx_rev(dev) >= MT76XX_REV_E3) {
	patch_mask = BIT(0);
	patch_reg = MT_MCU_CLOCK_CTL;
	} else {
	patch_mask = BIT(1);
	patch_reg = MT_MCU_COM_REG0;
	}

	if (rom_protect && (mt76_rr(dev, patch_reg) & patch_mask)) {
	dev_info(dev->mt76.dev, "ROM patch already applied\n");
	return 0;
	}

	err = request_firmware(&fw, MT7662U_ROM_PATCH, dev->mt76.dev);
	if (err < 0)
	return err;

	if (!fw \|\| !fw->data \|\| fw->size <= sizeof(*hdr)) {
	dev_err(dev->mt76.dev, "failed to load firmware\n");
	err = -EIO;
	goto out;
	}

	hdr = (struct mt76x2_patch_header *)fw->data;
	dev_info(dev->mt76.dev, "ROM patch build: %.15s\n", hdr->build_time);

	/* enable USB_DMA_CFG */
	val = MT_USB_DMA_CFG_RX_BULK_EN \|
	MT_USB_DMA_CFG_TX_BULK_EN \|
	FIELD_PREP(MT_USB_DMA_CFG_RX_BULK_AGG_TOUT, 0x20);
	mt76_wr(dev, MT_VEND_ADDR(CFG, MT_USB_U3DMA_CFG), val);

	/* vendor reset */
	mt76u_mcu_fw_reset(&dev->mt76);
	usleep_range(5000, 10000);

	/* enable FCE to send in-band cmd */
	mt76_wr(dev, MT_FCE_PSE_CTRL, 0x1);
	/* FCE tx_fs_base_ptr */
	mt76_wr(dev, MT_TX_CPU_FROM_FCE_BASE_PTR, 0x400230);
	/* FCE tx_fs_max_cnt */
	mt76_wr(dev, MT_TX_CPU_FROM_FCE_MAX_COUNT, 0x1);
	/* FCE pdma enable */
	mt76_wr(dev, MT_FCE_PDMA_GLOBAL_CONF, 0x44);
	/* FCE skip_fs_en */
	mt76_wr(dev, MT_FCE_SKIP_FS, 0x3);

	err = mt76u_mcu_fw_send_data(&dev->mt76, fw->data + sizeof(*hdr),
	fw->size - sizeof(*hdr),
	MCU_ROM_PATCH_MAX_PAYLOAD,
	MT76U_MCU_ROM_PATCH_OFFSET);
	if (err < 0) {
	err = -EIO;
	goto out;
	}

	mt76x2u_mcu_enable_patch(dev);
	mt76x2u_mcu_reset_wmt(dev);
	mdelay(20);

	if (!mt76_poll_msec(dev, patch_reg, patch_mask, patch_mask, 100)) {
	dev_err(dev->mt76.dev, "failed to load ROM patch\n");
	err = -ETIMEDOUT;
	}

	out:
	if (rom_protect)
	mt76_wr(dev, MT_MCU_SEMAPHORE_03, 1);
	release_firmware(fw);
	return err;
	}

	static int mt76x2u_mcu_load_firmware(struct mt76x2_dev *dev)
	{
	u32 val, dlm_offset = MT76U_MCU_DLM_OFFSET;
	const struct mt76x2_fw_header *hdr;
	int err, len, ilm_len, dlm_len;
	const struct firmware *fw;

	err = request_firmware(&fw, MT7662U_FIRMWARE, dev->mt76.dev);
	if (err < 0)
	return err;

	if (!fw \|\| !fw->data \|\| fw->size < sizeof(*hdr)) {
	err = -EINVAL;
	goto out;
	}

	hdr = (const struct mt76x2_fw_header *)fw->data;
	ilm_len = le32_to_cpu(hdr->ilm_len);
	dlm_len = le32_to_cpu(hdr->dlm_len);
	len = sizeof(*hdr) + ilm_len + dlm_len;
	if (fw->size != len) {
	err = -EINVAL;
	goto out;
	}

	val = le16_to_cpu(hdr->fw_ver);
	dev_info(dev->mt76.dev, "Firmware Version: %d.%d.%02d\n",
	(val >> 12) & 0xf, (val >> 8) & 0xf, val & 0xf);

	val = le16_to_cpu(hdr->build_ver);
	dev_info(dev->mt76.dev, "Build: %x\n", val);
	dev_info(dev->mt76.dev, "Build Time: %.16s\n", hdr->build_time);

	/* vendor reset */
	mt76u_mcu_fw_reset(&dev->mt76);
	usleep_range(5000, 10000);

	/* enable USB_DMA_CFG */
	val = MT_USB_DMA_CFG_RX_BULK_EN \|
	MT_USB_DMA_CFG_TX_BULK_EN \|
	FIELD_PREP(MT_USB_DMA_CFG_RX_BULK_AGG_TOUT, 0x20);
	mt76_wr(dev, MT_VEND_ADDR(CFG, MT_USB_U3DMA_CFG), val);
	/* enable FCE to send in-band cmd */
	mt76_wr(dev, MT_FCE_PSE_CTRL, 0x1);
	/* FCE tx_fs_base_ptr */
	mt76_wr(dev, MT_TX_CPU_FROM_FCE_BASE_PTR, 0x400230);
	/* FCE tx_fs_max_cnt */
	mt76_wr(dev, MT_TX_CPU_FROM_FCE_MAX_COUNT, 0x1);
	/* FCE pdma enable */
	mt76_wr(dev, MT_FCE_PDMA_GLOBAL_CONF, 0x44);
	/* FCE skip_fs_en */
	mt76_wr(dev, MT_FCE_SKIP_FS, 0x3);

	/* load ILM */
	err = mt76u_mcu_fw_send_data(&dev->mt76, fw->data + sizeof(*hdr),
	ilm_len, MCU_FW_URB_MAX_PAYLOAD,
	MT76U_MCU_ILM_OFFSET);
	if (err < 0) {
	err = -EIO;
	goto out;
	}

	/* load DLM */
	if (mt76xx_rev(dev) >= MT76XX_REV_E3)
	dlm_offset += 0x800;
	err = mt76u_mcu_fw_send_data(&dev->mt76,
	fw->data + sizeof(*hdr) + ilm_len,
	dlm_len, MCU_FW_URB_MAX_PAYLOAD,
	dlm_offset);
	if (err < 0) {
	err = -EIO;
	goto out;
	}

	mt76x2u_mcu_load_ivb(dev);
	if (!mt76_poll_msec(dev, MT_MCU_COM_REG0, 1, 1, 100)) {
	dev_err(dev->mt76.dev, "firmware failed to start\n");
	err = -ETIMEDOUT;
	goto out;
	}

	mt76_set(dev, MT_MCU_COM_REG0, BIT(1));
	/* enable FCE to send in-band cmd */
	mt76_wr(dev, MT_FCE_PSE_CTRL, 0x1);
	dev_dbg(dev->mt76.dev, "firmware running\n");

	out:
	release_firmware(fw);
	return err;
	}

	int mt76x2u_mcu_fw_init(struct mt76x2_dev *dev)
	{
	int err;

	err = mt76x2u_mcu_load_rom_patch(dev);
	if (err < 0)
	return err;

	return mt76x2u_mcu_load_firmware(dev);
	}

	int mt76x2u_mcu_init(struct mt76x2_dev *dev)
	{
	int err;

	err = mt76x2u_mcu_function_select(dev, Q_SELECT, 1);
	if (err < 0)
	return err;

	return mt76x2u_mcu_set_radio_state(dev, true);
	}

	void mt76x2u_mcu_deinit(struct mt76x2_dev *dev)
	{
	struct mt76_usb *usb = &dev->mt76.usb;

	usb_kill_urb(usb->mcu.res.urb);
	mt76u_buf_free(&usb->mcu.res);
	}