[deliverable/linux.git] / drivers / net / wireless / mediatek / mt7601u / mcu.c

/*
 * (c) Copyright 2002-2010, Ralink Technology, Inc.
 * Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
 * Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#include <linux/kernel.h>
#include <linux/firmware.h>
#include <linux/delay.h>
#include <linux/usb.h>
#include <linux/skbuff.h>

#include "mt7601u.h"
#include "dma.h"
#include "mcu.h"
#include "usb.h"
#include "trace.h"

#define MCU_FW_URB_MAX_PAYLOAD		0x3800
#define MCU_FW_URB_SIZE			(MCU_FW_URB_MAX_PAYLOAD + 12)
#define MCU_RESP_URB_SIZE		1024

static inline int firmware_running(struct mt7601u_dev *dev)
{
	return mt7601u_rr(dev, MT_MCU_COM_REG0) == 1;
}

static inline void skb_put_le32(struct sk_buff *skb, u32 val)
{
	put_unaligned_le32(val, skb_put(skb, 4));
}

static inline void mt7601u_dma_skb_wrap_cmd(struct sk_buff *skb,
					    u8 seq, enum mcu_cmd cmd)
{
	WARN_ON(mt7601u_dma_skb_wrap(skb, CPU_TX_PORT, DMA_COMMAND,
				     FIELD_PREP(MT_TXD_CMD_INFO_SEQ, seq) |
				     FIELD_PREP(MT_TXD_CMD_INFO_TYPE, cmd)));
}

static inline void trace_mt_mcu_msg_send_cs(struct mt7601u_dev *dev,
					    struct sk_buff *skb, bool need_resp)
{
	u32 i, csum = 0;

	for (i = 0; i < skb->len / 4; i++)
		csum ^= get_unaligned_le32(skb->data + i * 4);

	trace_mt_mcu_msg_send(dev, skb, csum, need_resp);
}

static struct sk_buff *
mt7601u_mcu_msg_alloc(struct mt7601u_dev *dev, const void *data, int len)
{
	struct sk_buff *skb;

	WARN_ON(len % 4); /* if length is not divisible by 4 we need to pad */

	skb = alloc_skb(len + MT_DMA_HDR_LEN + 4, GFP_KERNEL);
	skb_reserve(skb, MT_DMA_HDR_LEN);
	memcpy(skb_put(skb, len), data, len);

	return skb;
}

static int mt7601u_mcu_wait_resp(struct mt7601u_dev *dev, u8 seq)
{
	struct urb *urb = dev->mcu.resp.urb;
	u32 rxfce;
	int urb_status, ret, i = 5;

	while (i--) {
		if (!wait_for_completion_timeout(&dev->mcu.resp_cmpl,
						 msecs_to_jiffies(300))) {
			dev_warn(dev->dev, "Warning: %s retrying\n", __func__);
			continue;
		}

		/* Make copies of important data before reusing the urb */
		rxfce = get_unaligned_le32(dev->mcu.resp.buf);
		urb_status = urb->status * mt7601u_urb_has_error(urb);

		ret = mt7601u_usb_submit_buf(dev, USB_DIR_IN, MT_EP_IN_CMD_RESP,
					     &dev->mcu.resp, GFP_KERNEL,
					     mt7601u_complete_urb,
					     &dev->mcu.resp_cmpl);
		if (ret)
			return ret;

		if (urb_status)
			dev_err(dev->dev, "Error: MCU resp urb failed:%d\n",
				urb_status);

		if (FIELD_GET(MT_RXD_CMD_INFO_CMD_SEQ, rxfce) == seq &&
		    FIELD_GET(MT_RXD_CMD_INFO_EVT_TYPE, rxfce) == CMD_DONE)
			return 0;

		dev_err(dev->dev, "Error: MCU resp evt:%lx seq:%hhx-%lx!\n",
			FIELD_GET(MT_RXD_CMD_INFO_EVT_TYPE, rxfce),
			seq, FIELD_GET(MT_RXD_CMD_INFO_CMD_SEQ, rxfce));
	}

	dev_err(dev->dev, "Error: %s timed out\n", __func__);
	return -ETIMEDOUT;
}

static int
mt7601u_mcu_msg_send(struct mt7601u_dev *dev, struct sk_buff *skb,
		     enum mcu_cmd cmd, bool wait_resp)
{
	struct usb_device *usb_dev = mt7601u_to_usb_dev(dev);
	unsigned cmd_pipe = usb_sndbulkpipe(usb_dev,
					    dev->out_eps[MT_EP_OUT_INBAND_CMD]);
	int sent, ret;
	u8 seq = 0;

	if (test_bit(MT7601U_STATE_REMOVED, &dev->state))
		return 0;

	mutex_lock(&dev->mcu.mutex);

	if (wait_resp)
		while (!seq)
			seq = ++dev->mcu.msg_seq & 0xf;

	mt7601u_dma_skb_wrap_cmd(skb, seq, cmd);

	if (dev->mcu.resp_cmpl.done)
		dev_err(dev->dev, "Error: MCU response pre-completed!\n");

	trace_mt_mcu_msg_send_cs(dev, skb, wait_resp);
	trace_mt_submit_urb_sync(dev, cmd_pipe, skb->len);
	ret = usb_bulk_msg(usb_dev, cmd_pipe, skb->data, skb->len, &sent, 500);
	if (ret) {
		dev_err(dev->dev, "Error: send MCU cmd failed:%d\n", ret);
		goto out;
	}
	if (sent != skb->len)
		dev_err(dev->dev, "Error: %s sent != skb->len\n", __func__);

	if (wait_resp)
		ret = mt7601u_mcu_wait_resp(dev, seq);
out:
	mutex_unlock(&dev->mcu.mutex);

	consume_skb(skb);

	return ret;
}

static int mt7601u_mcu_function_select(struct mt7601u_dev *dev,
				       enum mcu_function func, u32 val)
{
	struct sk_buff *skb;
	struct {
		__le32 id;
		__le32 value;
	} __packed __aligned(4) msg = {
		.id = cpu_to_le32(func),
		.value = cpu_to_le32(val),
	};

	skb = mt7601u_mcu_msg_alloc(dev, &msg, sizeof(msg));
	return mt7601u_mcu_msg_send(dev, skb, CMD_FUN_SET_OP, func == 5);
}

int mt7601u_mcu_tssi_read_kick(struct mt7601u_dev *dev, int use_hvga)
{
	int ret;

	if (!test_bit(MT7601U_STATE_MCU_RUNNING, &dev->state))
		return 0;

	ret = mt7601u_mcu_function_select(dev, ATOMIC_TSSI_SETTING,
					  use_hvga);
	if (ret) {
		dev_warn(dev->dev, "Warning: MCU TSSI read kick failed\n");
		return ret;
	}

	dev->tssi_read_trig = true;

	return 0;
}

int
mt7601u_mcu_calibrate(struct mt7601u_dev *dev, enum mcu_calibrate cal, u32 val)
{
	struct sk_buff *skb;
	struct {
		__le32 id;
		__le32 value;
	} __packed __aligned(4) msg = {
		.id = cpu_to_le32(cal),
		.value = cpu_to_le32(val),
	};

	skb = mt7601u_mcu_msg_alloc(dev, &msg, sizeof(msg));
	return mt7601u_mcu_msg_send(dev, skb, CMD_CALIBRATION_OP, true);
}

int mt7601u_write_reg_pairs(struct mt7601u_dev *dev, u32 base,
			    const struct mt76_reg_pair *data, int n)
{
	const int max_vals_per_cmd = INBAND_PACKET_MAX_LEN / 8;
	struct sk_buff *skb;
	int cnt, i, ret;

	if (!n)
		return 0;

	cnt = min(max_vals_per_cmd, n);

	skb = alloc_skb(cnt * 8 + MT_DMA_HDR_LEN + 4, GFP_KERNEL);
	if (!skb)
		return -ENOMEM;
	skb_reserve(skb, MT_DMA_HDR_LEN);

	for (i = 0; i < cnt; i++) {
		skb_put_le32(skb, base + data[i].reg);
		skb_put_le32(skb, data[i].value);
	}

	ret = mt7601u_mcu_msg_send(dev, skb, CMD_RANDOM_WRITE, cnt == n);
	if (ret)
		return ret;

	return mt7601u_write_reg_pairs(dev, base, data + cnt, n - cnt);
}

int mt7601u_burst_write_regs(struct mt7601u_dev *dev, u32 offset,
			     const u32 *data, int n)
{
	const int max_regs_per_cmd = INBAND_PACKET_MAX_LEN / 4 - 1;
	struct sk_buff *skb;
	int cnt, i, ret;

	if (!n)
		return 0;

	cnt = min(max_regs_per_cmd, n);

	skb = alloc_skb(cnt * 4 + MT_DMA_HDR_LEN + 4, GFP_KERNEL);
	if (!skb)
		return -ENOMEM;
	skb_reserve(skb, MT_DMA_HDR_LEN);

	skb_put_le32(skb, MT_MCU_MEMMAP_WLAN + offset);
	for (i = 0; i < cnt; i++)
		skb_put_le32(skb, data[i]);

	ret = mt7601u_mcu_msg_send(dev, skb, CMD_BURST_WRITE, cnt == n);
	if (ret)
		return ret;

	return mt7601u_burst_write_regs(dev, offset + cnt * 4,
					data + cnt, n - cnt);
}

struct mt76_fw_header {
	__le32 ilm_len;
	__le32 dlm_len;
	__le16 build_ver;
	__le16 fw_ver;
	u8 pad[4];
	char build_time[16];
};

struct mt76_fw {
	struct mt76_fw_header hdr;
	u8 ivb[MT_MCU_IVB_SIZE];
	u8 ilm[];
};

static int __mt7601u_dma_fw(struct mt7601u_dev *dev,
			    const struct mt7601u_dma_buf *dma_buf,
			    const void *data, u32 len, u32 dst_addr)
{
	DECLARE_COMPLETION_ONSTACK(cmpl);
	struct mt7601u_dma_buf buf = *dma_buf; /* we need to fake length */
	__le32 reg;
	u32 val;
	int ret;

	reg = cpu_to_le32(FIELD_PREP(MT_TXD_INFO_TYPE, DMA_PACKET) |
			  FIELD_PREP(MT_TXD_INFO_D_PORT, CPU_TX_PORT) |
			  FIELD_PREP(MT_TXD_INFO_LEN, len));
	memcpy(buf.buf, &reg, sizeof(reg));
	memcpy(buf.buf + sizeof(reg), data, len);
	memset(buf.buf + sizeof(reg) + len, 0, 8);

	ret = mt7601u_vendor_single_wr(dev, MT_VEND_WRITE_FCE,
				       MT_FCE_DMA_ADDR, dst_addr);
	if (ret)
		return ret;
	len = roundup(len, 4);
	ret = mt7601u_vendor_single_wr(dev, MT_VEND_WRITE_FCE,
				       MT_FCE_DMA_LEN, len << 16);
	if (ret)
		return ret;

	buf.len = MT_DMA_HDR_LEN + len + 4;
	ret = mt7601u_usb_submit_buf(dev, USB_DIR_OUT, MT_EP_OUT_INBAND_CMD,
				     &buf, GFP_KERNEL,
				     mt7601u_complete_urb, &cmpl);
	if (ret)
		return ret;

	if (!wait_for_completion_timeout(&cmpl, msecs_to_jiffies(1000))) {
		dev_err(dev->dev, "Error: firmware upload timed out\n");
		usb_kill_urb(buf.urb);
		return -ETIMEDOUT;
	}
	if (mt7601u_urb_has_error(buf.urb)) {
		dev_err(dev->dev, "Error: firmware upload urb failed:%d\n",
			buf.urb->status);
		return buf.urb->status;
	}

	val = mt7601u_rr(dev, MT_TX_CPU_FROM_FCE_CPU_DESC_IDX);
	val++;
	mt7601u_wr(dev, MT_TX_CPU_FROM_FCE_CPU_DESC_IDX, val);

	return 0;
}

static int
mt7601u_dma_fw(struct mt7601u_dev *dev, struct mt7601u_dma_buf *dma_buf,
	       const void *data, int len, u32 dst_addr)
{
	int n, ret;

	if (len == 0)
		return 0;

	n = min(MCU_FW_URB_MAX_PAYLOAD, len);
	ret = __mt7601u_dma_fw(dev, dma_buf, data, n, dst_addr);
	if (ret)
		return ret;

	if (!mt76_poll_msec(dev, MT_MCU_COM_REG1, BIT(31), BIT(31), 500))
		return -ETIMEDOUT;

	return mt7601u_dma_fw(dev, dma_buf, data + n, len - n, dst_addr + n);
}

static int
mt7601u_upload_firmware(struct mt7601u_dev *dev, const struct mt76_fw *fw)
{
	struct mt7601u_dma_buf dma_buf;
	void *ivb;
	u32 ilm_len, dlm_len;
	int i, ret;

	ivb = kmemdup(fw->ivb, sizeof(fw->ivb), GFP_KERNEL);
	if (!ivb)
		return -ENOMEM;
	if (mt7601u_usb_alloc_buf(dev, MCU_FW_URB_SIZE, &dma_buf)) {
		ret = -ENOMEM;
		goto error;
	}

	ilm_len = le32_to_cpu(fw->hdr.ilm_len) - sizeof(fw->ivb);
	dev_dbg(dev->dev, "loading FW - ILM %u + IVB %zu\n",
		ilm_len, sizeof(fw->ivb));
	ret = mt7601u_dma_fw(dev, &dma_buf, fw->ilm, ilm_len, sizeof(fw->ivb));
	if (ret)
		goto error;

	dlm_len = le32_to_cpu(fw->hdr.dlm_len);
	dev_dbg(dev->dev, "loading FW - DLM %u\n", dlm_len);
	ret = mt7601u_dma_fw(dev, &dma_buf, fw->ilm + ilm_len,
			     dlm_len, MT_MCU_DLM_OFFSET);
	if (ret)
		goto error;

	ret = mt7601u_vendor_request(dev, MT_VEND_DEV_MODE, USB_DIR_OUT,
				     0x12, 0, ivb, sizeof(fw->ivb));
	if (ret < 0)
		goto error;
	ret = 0;

	for (i = 100; i && !firmware_running(dev); i--)
		msleep(10);
	if (!i) {
		ret = -ETIMEDOUT;
		goto error;
	}

	dev_dbg(dev->dev, "Firmware running!\n");
error:
	kfree(ivb);
	mt7601u_usb_free_buf(dev, &dma_buf);

	return ret;
}

static int mt7601u_load_firmware(struct mt7601u_dev *dev)
{
	const struct firmware *fw;
	const struct mt76_fw_header *hdr;
	int len, ret;
	u32 val;

	mt7601u_wr(dev, MT_USB_DMA_CFG, (MT_USB_DMA_CFG_RX_BULK_EN |
					 MT_USB_DMA_CFG_TX_BULK_EN));

	if (firmware_running(dev))
		return 0;

	ret = request_firmware(&fw, MT7601U_FIRMWARE, dev->dev);
	if (ret)
		return ret;

	if (!fw || !fw->data || fw->size < sizeof(*hdr))
		goto err_inv_fw;

	hdr = (const struct mt76_fw_header *) fw->data;

	if (le32_to_cpu(hdr->ilm_len) <= MT_MCU_IVB_SIZE)
		goto err_inv_fw;

	len = sizeof(*hdr);
	len += le32_to_cpu(hdr->ilm_len);
	len += le32_to_cpu(hdr->dlm_len);

	if (fw->size != len)
		goto err_inv_fw;

	val = le16_to_cpu(hdr->fw_ver);
	dev_info(dev->dev,
		 "Firmware Version: %d.%d.%02d Build: %x Build time: %.16s\n",
		 (val >> 12) & 0xf, (val >> 8) & 0xf, val & 0xf,
		 le16_to_cpu(hdr->build_ver), hdr->build_time);

	len = le32_to_cpu(hdr->ilm_len);

	mt7601u_wr(dev, 0x94c, 0);
	mt7601u_wr(dev, MT_FCE_PSE_CTRL, 0);

	mt7601u_vendor_reset(dev);
	msleep(5);

	mt7601u_wr(dev, 0xa44, 0);
	mt7601u_wr(dev, 0x230, 0x84210);
	mt7601u_wr(dev, 0x400, 0x80c00);
	mt7601u_wr(dev, 0x800, 1);

	mt7601u_rmw(dev, MT_PBF_CFG, 0, (MT_PBF_CFG_TX0Q_EN |
					 MT_PBF_CFG_TX1Q_EN |
					 MT_PBF_CFG_TX2Q_EN |
					 MT_PBF_CFG_TX3Q_EN));

	mt7601u_wr(dev, MT_FCE_PSE_CTRL, 1);

	mt7601u_wr(dev, MT_USB_DMA_CFG, (MT_USB_DMA_CFG_RX_BULK_EN |
					 MT_USB_DMA_CFG_TX_BULK_EN));
	val = mt76_set(dev, MT_USB_DMA_CFG, MT_USB_DMA_CFG_TX_CLR);
	val &= ~MT_USB_DMA_CFG_TX_CLR;
	mt7601u_wr(dev, MT_USB_DMA_CFG, val);

	/* FCE tx_fs_base_ptr */
	mt7601u_wr(dev, MT_TX_CPU_FROM_FCE_BASE_PTR, 0x400230);
	/* FCE tx_fs_max_cnt */
	mt7601u_wr(dev, MT_TX_CPU_FROM_FCE_MAX_COUNT, 1);
	/* FCE pdma enable */
	mt7601u_wr(dev, MT_FCE_PDMA_GLOBAL_CONF, 0x44);
	/* FCE skip_fs_en */
	mt7601u_wr(dev, MT_FCE_SKIP_FS, 3);

	ret = mt7601u_upload_firmware(dev, (const struct mt76_fw *)fw->data);

	release_firmware(fw);

	return ret;

err_inv_fw:
	dev_err(dev->dev, "Invalid firmware image\n");
	release_firmware(fw);
	return -ENOENT;
}

int mt7601u_mcu_init(struct mt7601u_dev *dev)
{
	int ret;

	mutex_init(&dev->mcu.mutex);

	ret = mt7601u_load_firmware(dev);
	if (ret)
		return ret;

	set_bit(MT7601U_STATE_MCU_RUNNING, &dev->state);

	return 0;
}

int mt7601u_mcu_cmd_init(struct mt7601u_dev *dev)
{
	int ret;

	ret = mt7601u_mcu_function_select(dev, Q_SELECT, 1);
	if (ret)
		return ret;

	init_completion(&dev->mcu.resp_cmpl);
	if (mt7601u_usb_alloc_buf(dev, MCU_RESP_URB_SIZE, &dev->mcu.resp)) {
		mt7601u_usb_free_buf(dev, &dev->mcu.resp);
		return -ENOMEM;
	}

	ret = mt7601u_usb_submit_buf(dev, USB_DIR_IN, MT_EP_IN_CMD_RESP,
				     &dev->mcu.resp, GFP_KERNEL,
				     mt7601u_complete_urb, &dev->mcu.resp_cmpl);
	if (ret) {
		mt7601u_usb_free_buf(dev, &dev->mcu.resp);
		return ret;
	}

	return 0;
}

void mt7601u_mcu_cmd_deinit(struct mt7601u_dev *dev)
{
	usb_kill_urb(dev->mcu.resp.urb);
	mt7601u_usb_free_buf(dev, &dev->mcu.resp);
}
Commit	Line	Data
c869f77d JK	1	/*
	2	* (c) Copyright 2002-2010, Ralink Technology, Inc.
	3	* Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
	4	* Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl>
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2
	8	* as published by the Free Software Foundation
	9	*
	10	* This program is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
	14	*/
	15
	16	#include <linux/kernel.h>
	17	#include <linux/firmware.h>
	18	#include <linux/delay.h>
	19	#include <linux/usb.h>
	20	#include <linux/skbuff.h>
	21
	22	#include "mt7601u.h"
	23	#include "dma.h"
	24	#include "mcu.h"
	25	#include "usb.h"
	26	#include "trace.h"
	27
	28	#define MCU_FW_URB_MAX_PAYLOAD 0x3800
	29	#define MCU_FW_URB_SIZE (MCU_FW_URB_MAX_PAYLOAD + 12)
	30	#define MCU_RESP_URB_SIZE 1024
	31
	32	static inline int firmware_running(struct mt7601u_dev *dev)
	33	{
	34	return mt7601u_rr(dev, MT_MCU_COM_REG0) == 1;
	35	}
	36
	37	static inline void skb_put_le32(struct sk_buff *skb, u32 val)
	38	{
	39	put_unaligned_le32(val, skb_put(skb, 4));
	40	}
	41
	42	static inline void mt7601u_dma_skb_wrap_cmd(struct sk_buff *skb,
	43	u8 seq, enum mcu_cmd cmd)
	44	{
	45	WARN_ON(mt7601u_dma_skb_wrap(skb, CPU_TX_PORT, DMA_COMMAND,
d43af505 JK	46	FIELD_PREP(MT_TXD_CMD_INFO_SEQ, seq) \|
d43af505 JK	47	FIELD_PREP(MT_TXD_CMD_INFO_TYPE, cmd)));
c869f77d JK	48	}
	49
	50	static inline void trace_mt_mcu_msg_send_cs(struct mt7601u_dev *dev,
	51	struct sk_buff *skb, bool need_resp)
	52	{
	53	u32 i, csum = 0;
	54
	55	for (i = 0; i < skb->len / 4; i++)
	56	csum ^= get_unaligned_le32(skb->data + i * 4);
	57
	58	trace_mt_mcu_msg_send(dev, skb, csum, need_resp);
	59	}
	60
	61	static struct sk_buff *
	62	mt7601u_mcu_msg_alloc(struct mt7601u_dev dev, const void data, int len)
	63	{
	64	struct sk_buff *skb;
	65
	66	WARN_ON(len % 4); /* if length is not divisible by 4 we need to pad */
	67
	68	skb = alloc_skb(len + MT_DMA_HDR_LEN + 4, GFP_KERNEL);
	69	skb_reserve(skb, MT_DMA_HDR_LEN);
	70	memcpy(skb_put(skb, len), data, len);
	71
	72	return skb;
	73	}
	74
	75	static int mt7601u_mcu_wait_resp(struct mt7601u_dev *dev, u8 seq)
	76	{
	77	struct urb *urb = dev->mcu.resp.urb;
	78	u32 rxfce;
	79	int urb_status, ret, i = 5;
	80
	81	while (i--) {
	82	if (!wait_for_completion_timeout(&dev->mcu.resp_cmpl,
	83	msecs_to_jiffies(300))) {
	84	dev_warn(dev->dev, "Warning: %s retrying\n", __func__);
	85	continue;
	86	}
	87
	88	/* Make copies of important data before reusing the urb */
	89	rxfce = get_unaligned_le32(dev->mcu.resp.buf);
	90	urb_status = urb->status * mt7601u_urb_has_error(urb);
	91
	92	ret = mt7601u_usb_submit_buf(dev, USB_DIR_IN, MT_EP_IN_CMD_RESP,
	93	&dev->mcu.resp, GFP_KERNEL,
	94	mt7601u_complete_urb,
	95	&dev->mcu.resp_cmpl);
	96	if (ret)
	97	return ret;
	98
	99	if (urb_status)
	100	dev_err(dev->dev, "Error: MCU resp urb failed:%d\n",
	101	urb_status);
	102
d43af505 JK	103	if (FIELD_GET(MT_RXD_CMD_INFO_CMD_SEQ, rxfce) == seq &&
d43af505 JK	104	FIELD_GET(MT_RXD_CMD_INFO_EVT_TYPE, rxfce) == CMD_DONE)
c869f77d JK	105	return 0;
c869f77d JK	106
d43af505 JK	107	dev_err(dev->dev, "Error: MCU resp evt:%lx seq:%hhx-%lx!\n",
	108	FIELD_GET(MT_RXD_CMD_INFO_EVT_TYPE, rxfce),
	109	seq, FIELD_GET(MT_RXD_CMD_INFO_CMD_SEQ, rxfce));
c869f77d JK	110	}
	111
	112	dev_err(dev->dev, "Error: %s timed out\n", __func__);
	113	return -ETIMEDOUT;
	114	}
	115
	116	static int
	117	mt7601u_mcu_msg_send(struct mt7601u_dev dev, struct sk_buff skb,
	118	enum mcu_cmd cmd, bool wait_resp)
	119	{
	120	struct usb_device *usb_dev = mt7601u_to_usb_dev(dev);
	121	unsigned cmd_pipe = usb_sndbulkpipe(usb_dev,
	122	dev->out_eps[MT_EP_OUT_INBAND_CMD]);
	123	int sent, ret;
	124	u8 seq = 0;
	125
	126	if (test_bit(MT7601U_STATE_REMOVED, &dev->state))
	127	return 0;
	128
	129	mutex_lock(&dev->mcu.mutex);
	130
	131	if (wait_resp)
	132	while (!seq)
	133	seq = ++dev->mcu.msg_seq & 0xf;
	134
	135	mt7601u_dma_skb_wrap_cmd(skb, seq, cmd);
	136
	137	if (dev->mcu.resp_cmpl.done)
	138	dev_err(dev->dev, "Error: MCU response pre-completed!\n");
	139
	140	trace_mt_mcu_msg_send_cs(dev, skb, wait_resp);
	141	trace_mt_submit_urb_sync(dev, cmd_pipe, skb->len);
	142	ret = usb_bulk_msg(usb_dev, cmd_pipe, skb->data, skb->len, &sent, 500);
	143	if (ret) {
	144	dev_err(dev->dev, "Error: send MCU cmd failed:%d\n", ret);
	145	goto out;
	146	}
	147	if (sent != skb->len)
	148	dev_err(dev->dev, "Error: %s sent != skb->len\n", __func__);
	149
	150	if (wait_resp)
	151	ret = mt7601u_mcu_wait_resp(dev, seq);
	152	out:
	153	mutex_unlock(&dev->mcu.mutex);
	154
	155	consume_skb(skb);
	156
	157	return ret;
	158	}
	159
	160	static int mt7601u_mcu_function_select(struct mt7601u_dev *dev,
	161	enum mcu_function func, u32 val)
	162	{
	163	struct sk_buff *skb;
	164	struct {
	165	__le32 id;
	166	__le32 value;
	167	} __packed __aligned(4) msg = {
	168	.id = cpu_to_le32(func),
	169	.value = cpu_to_le32(val),
	170	};
	171
	172	skb = mt7601u_mcu_msg_alloc(dev, &msg, sizeof(msg));
	173	return mt7601u_mcu_msg_send(dev, skb, CMD_FUN_SET_OP, func == 5);
174	}
175
176	int mt7601u_mcu_tssi_read_kick(struct mt7601u_dev *dev, int use_hvga)
177	{
178	int ret;
179
180	if (!test_bit(MT7601U_STATE_MCU_RUNNING, &dev->state))
181	return 0;
182
183	ret = mt7601u_mcu_function_select(dev, ATOMIC_TSSI_SETTING,
184	use_hvga);
185	if (ret) {
186	dev_warn(dev->dev, "Warning: MCU TSSI read kick failed\n");
187	return ret;
188	}
189
190	dev->tssi_read_trig = true;
191
192	return 0;
193	}
194
195	int
196	mt7601u_mcu_calibrate(struct mt7601u_dev *dev, enum mcu_calibrate cal, u32 val)
197	{
198	struct sk_buff *skb;
199	struct {
200	__le32 id;
201	__le32 value;
202	} __packed __aligned(4) msg = {
203	.id = cpu_to_le32(cal),
204	.value = cpu_to_le32(val),
205	};
206
207	skb = mt7601u_mcu_msg_alloc(dev, &msg, sizeof(msg));
208	return mt7601u_mcu_msg_send(dev, skb, CMD_CALIBRATION_OP, true);
209	}
210
211	int mt7601u_write_reg_pairs(struct mt7601u_dev *dev, u32 base,
212	const struct mt76_reg_pair *data, int n)
213	{
214	const int max_vals_per_cmd = INBAND_PACKET_MAX_LEN / 8;
215	struct sk_buff *skb;
216	int cnt, i, ret;
217
218	if (!n)
219	return 0;
220
221	cnt = min(max_vals_per_cmd, n);
222
223	skb = alloc_skb(cnt * 8 + MT_DMA_HDR_LEN + 4, GFP_KERNEL);
224	if (!skb)
225	return -ENOMEM;
226	skb_reserve(skb, MT_DMA_HDR_LEN);
227
228	for (i = 0; i < cnt; i++) {
229	skb_put_le32(skb, base + data[i].reg);
230	skb_put_le32(skb, data[i].value);
231	}
232
233	ret = mt7601u_mcu_msg_send(dev, skb, CMD_RANDOM_WRITE, cnt == n);
234	if (ret)
235	return ret;
236
237	return mt7601u_write_reg_pairs(dev, base, data + cnt, n - cnt);
238	}
239
240	int mt7601u_burst_write_regs(struct mt7601u_dev *dev, u32 offset,
241	const u32 *data, int n)
242	{
243	const int max_regs_per_cmd = INBAND_PACKET_MAX_LEN / 4 - 1;
244	struct sk_buff *skb;
245	int cnt, i, ret;
246
247	if (!n)
248	return 0;
249
250	cnt = min(max_regs_per_cmd, n);
251
252	skb = alloc_skb(cnt * 4 + MT_DMA_HDR_LEN + 4, GFP_KERNEL);
253	if (!skb)
254	return -ENOMEM;
255	skb_reserve(skb, MT_DMA_HDR_LEN);
256
257	skb_put_le32(skb, MT_MCU_MEMMAP_WLAN + offset);
258	for (i = 0; i < cnt; i++)
259	skb_put_le32(skb, data[i]);
260
261	ret = mt7601u_mcu_msg_send(dev, skb, CMD_BURST_WRITE, cnt == n);
262	if (ret)
263	return ret;
264
265	return mt7601u_burst_write_regs(dev, offset + cnt * 4,
266	data + cnt, n - cnt);
267	}
268
269	struct mt76_fw_header {
270	__le32 ilm_len;
271	__le32 dlm_len;
272	__le16 build_ver;
273	__le16 fw_ver;
274	u8 pad[4];
275	char build_time[16];
276	};
277
278	struct mt76_fw {
279	struct mt76_fw_header hdr;
280	u8 ivb[MT_MCU_IVB_SIZE];
281	u8 ilm[];
282	};
283
284	static int __mt7601u_dma_fw(struct mt7601u_dev *dev,
285	const struct mt7601u_dma_buf *dma_buf,
286	const void *data, u32 len, u32 dst_addr)
287	{
288	DECLARE_COMPLETION_ONSTACK(cmpl);
289	struct mt7601u_dma_buf buf = dma_buf; / we need to fake length */
290	__le32 reg;
291	u32 val;
292	int ret;
293
d43af505 JK	294	reg = cpu_to_le32(FIELD_PREP(MT_TXD_INFO_TYPE, DMA_PACKET) \|
	295	FIELD_PREP(MT_TXD_INFO_D_PORT, CPU_TX_PORT) \|
	296	FIELD_PREP(MT_TXD_INFO_LEN, len));
c869f77d JK	297	memcpy(buf.buf, &reg, sizeof(reg));
	298	memcpy(buf.buf + sizeof(reg), data, len);
	299	memset(buf.buf + sizeof(reg) + len, 0, 8);
	300
	301	ret = mt7601u_vendor_single_wr(dev, MT_VEND_WRITE_FCE,
	302	MT_FCE_DMA_ADDR, dst_addr);
	303	if (ret)
	304	return ret;
	305	len = roundup(len, 4);
	306	ret = mt7601u_vendor_single_wr(dev, MT_VEND_WRITE_FCE,
	307	MT_FCE_DMA_LEN, len << 16);
	308	if (ret)
	309	return ret;
	310
	311	buf.len = MT_DMA_HDR_LEN + len + 4;
	312	ret = mt7601u_usb_submit_buf(dev, USB_DIR_OUT, MT_EP_OUT_INBAND_CMD,
	313	&buf, GFP_KERNEL,
	314	mt7601u_complete_urb, &cmpl);
	315	if (ret)
	316	return ret;
	317
	318	if (!wait_for_completion_timeout(&cmpl, msecs_to_jiffies(1000))) {
	319	dev_err(dev->dev, "Error: firmware upload timed out\n");
	320	usb_kill_urb(buf.urb);
	321	return -ETIMEDOUT;
	322	}
	323	if (mt7601u_urb_has_error(buf.urb)) {
	324	dev_err(dev->dev, "Error: firmware upload urb failed:%d\n",
	325	buf.urb->status);
	326	return buf.urb->status;
	327	}
	328
	329	val = mt7601u_rr(dev, MT_TX_CPU_FROM_FCE_CPU_DESC_IDX);
	330	val++;
	331	mt7601u_wr(dev, MT_TX_CPU_FROM_FCE_CPU_DESC_IDX, val);
	332
	333	return 0;
	334	}
	335
	336	static int
	337	mt7601u_dma_fw(struct mt7601u_dev dev, struct mt7601u_dma_buf dma_buf,
	338	const void *data, int len, u32 dst_addr)
	339	{
	340	int n, ret;
	341
	342	if (len == 0)
	343	return 0;
	344
	345	n = min(MCU_FW_URB_MAX_PAYLOAD, len);
	346	ret = __mt7601u_dma_fw(dev, dma_buf, data, n, dst_addr);
	347	if (ret)
	348	return ret;
	349
	350	if (!mt76_poll_msec(dev, MT_MCU_COM_REG1, BIT(31), BIT(31), 500))
	351	return -ETIMEDOUT;
	352
	353	return mt7601u_dma_fw(dev, dma_buf, data + n, len - n, dst_addr + n);
	354	}
	355
	356	static int
	357	mt7601u_upload_firmware(struct mt7601u_dev dev, const struct mt76_fw fw)
	358	{
	359	struct mt7601u_dma_buf dma_buf;
	360	void *ivb;
361	u32 ilm_len, dlm_len;
362	int i, ret;
363
364	ivb = kmemdup(fw->ivb, sizeof(fw->ivb), GFP_KERNEL);
2b02a36d CIK	365	if (!ivb)
	366	return -ENOMEM;
	367	if (mt7601u_usb_alloc_buf(dev, MCU_FW_URB_SIZE, &dma_buf)) {
c869f77d JK	368	ret = -ENOMEM;
	369	goto error;
	370	}
	371
	372	ilm_len = le32_to_cpu(fw->hdr.ilm_len) - sizeof(fw->ivb);
	373	dev_dbg(dev->dev, "loading FW - ILM %u + IVB %zu\n",
	374	ilm_len, sizeof(fw->ivb));
	375	ret = mt7601u_dma_fw(dev, &dma_buf, fw->ilm, ilm_len, sizeof(fw->ivb));
	376	if (ret)
	377	goto error;
	378
	379	dlm_len = le32_to_cpu(fw->hdr.dlm_len);
	380	dev_dbg(dev->dev, "loading FW - DLM %u\n", dlm_len);
	381	ret = mt7601u_dma_fw(dev, &dma_buf, fw->ilm + ilm_len,
	382	dlm_len, MT_MCU_DLM_OFFSET);
	383	if (ret)
	384	goto error;
	385
	386	ret = mt7601u_vendor_request(dev, MT_VEND_DEV_MODE, USB_DIR_OUT,
	387	0x12, 0, ivb, sizeof(fw->ivb));
	388	if (ret < 0)
	389	goto error;
	390	ret = 0;
	391
	392	for (i = 100; i && !firmware_running(dev); i--)
	393	msleep(10);
	394	if (!i) {
	395	ret = -ETIMEDOUT;
	396	goto error;
	397	}
	398
	399	dev_dbg(dev->dev, "Firmware running!\n");
	400	error:
	401	kfree(ivb);
	402	mt7601u_usb_free_buf(dev, &dma_buf);
	403
	404	return ret;
	405	}
	406
	407	static int mt7601u_load_firmware(struct mt7601u_dev *dev)
	408	{
	409	const struct firmware *fw;
	410	const struct mt76_fw_header *hdr;
	411	int len, ret;
	412	u32 val;
	413
	414	mt7601u_wr(dev, MT_USB_DMA_CFG, (MT_USB_DMA_CFG_RX_BULK_EN \|
	415	MT_USB_DMA_CFG_TX_BULK_EN));
	416
	417	if (firmware_running(dev))
	418	return 0;
	419
	420	ret = request_firmware(&fw, MT7601U_FIRMWARE, dev->dev);
	421	if (ret)
	422	return ret;
	423
	424	if (!fw \|\| !fw->data \|\| fw->size < sizeof(*hdr))
	425	goto err_inv_fw;
	426
	427	hdr = (const struct mt76_fw_header *) fw->data;
	428
	429	if (le32_to_cpu(hdr->ilm_len) <= MT_MCU_IVB_SIZE)
	430	goto err_inv_fw;
	431
432	len = sizeof(*hdr);
433	len += le32_to_cpu(hdr->ilm_len);
434	len += le32_to_cpu(hdr->dlm_len);
435
436	if (fw->size != len)
437	goto err_inv_fw;
438
439	val = le16_to_cpu(hdr->fw_ver);
440	dev_info(dev->dev,
441	"Firmware Version: %d.%d.%02d Build: %x Build time: %.16s\n",
442	(val >> 12) & 0xf, (val >> 8) & 0xf, val & 0xf,
443	le16_to_cpu(hdr->build_ver), hdr->build_time);
444
445	len = le32_to_cpu(hdr->ilm_len);
446
447	mt7601u_wr(dev, 0x94c, 0);
448	mt7601u_wr(dev, MT_FCE_PSE_CTRL, 0);
449
450	mt7601u_vendor_reset(dev);
451	msleep(5);
452
453	mt7601u_wr(dev, 0xa44, 0);
454	mt7601u_wr(dev, 0x230, 0x84210);
455	mt7601u_wr(dev, 0x400, 0x80c00);
456	mt7601u_wr(dev, 0x800, 1);
457
458	mt7601u_rmw(dev, MT_PBF_CFG, 0, (MT_PBF_CFG_TX0Q_EN \|
459	MT_PBF_CFG_TX1Q_EN \|
460	MT_PBF_CFG_TX2Q_EN \|
461	MT_PBF_CFG_TX3Q_EN));
462
463	mt7601u_wr(dev, MT_FCE_PSE_CTRL, 1);
464
465	mt7601u_wr(dev, MT_USB_DMA_CFG, (MT_USB_DMA_CFG_RX_BULK_EN \|
466	MT_USB_DMA_CFG_TX_BULK_EN));
467	val = mt76_set(dev, MT_USB_DMA_CFG, MT_USB_DMA_CFG_TX_CLR);
468	val &= ~MT_USB_DMA_CFG_TX_CLR;
469	mt7601u_wr(dev, MT_USB_DMA_CFG, val);
470
471	/* FCE tx_fs_base_ptr */
472	mt7601u_wr(dev, MT_TX_CPU_FROM_FCE_BASE_PTR, 0x400230);
473	/* FCE tx_fs_max_cnt */
474	mt7601u_wr(dev, MT_TX_CPU_FROM_FCE_MAX_COUNT, 1);
475	/* FCE pdma enable */
476	mt7601u_wr(dev, MT_FCE_PDMA_GLOBAL_CONF, 0x44);
477	/* FCE skip_fs_en */
478	mt7601u_wr(dev, MT_FCE_SKIP_FS, 3);
479
480	ret = mt7601u_upload_firmware(dev, (const struct mt76_fw *)fw->data);
481
482	release_firmware(fw);
483
484	return ret;
485
486	err_inv_fw:
487	dev_err(dev->dev, "Invalid firmware image\n");
488	release_firmware(fw);
489	return -ENOENT;
490	}
491
492	int mt7601u_mcu_init(struct mt7601u_dev *dev)
493	{
494	int ret;
495
496	mutex_init(&dev->mcu.mutex);
497
498	ret = mt7601u_load_firmware(dev);
499	if (ret)
500	return ret;
501
502	set_bit(MT7601U_STATE_MCU_RUNNING, &dev->state);
503
504	return 0;
505	}
506
507	int mt7601u_mcu_cmd_init(struct mt7601u_dev *dev)
508	{
509	int ret;
510
511	ret = mt7601u_mcu_function_select(dev, Q_SELECT, 1);
512	if (ret)
513	return ret;
514
515	init_completion(&dev->mcu.resp_cmpl);
516	if (mt7601u_usb_alloc_buf(dev, MCU_RESP_URB_SIZE, &dev->mcu.resp)) {
517	mt7601u_usb_free_buf(dev, &dev->mcu.resp);
518	return -ENOMEM;
519	}
520
521	ret = mt7601u_usb_submit_buf(dev, USB_DIR_IN, MT_EP_IN_CMD_RESP,
522	&dev->mcu.resp, GFP_KERNEL,
523	mt7601u_complete_urb, &dev->mcu.resp_cmpl);
524	if (ret) {
525	mt7601u_usb_free_buf(dev, &dev->mcu.resp);
526	return ret;
527	}
528
529	return 0;
530	}
531
532	void mt7601u_mcu_cmd_deinit(struct mt7601u_dev *dev)
533	{
534	usb_kill_urb(dev->mcu.resp.urb);
535	mt7601u_usb_free_buf(dev, &dev->mcu.resp);
536	}