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// SPDX-License-Identifier: ISC
/*
* Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
* Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
*/
#include <linux/kernel.h>
#include <linux/firmware.h>
#include <linux/delay.h>
#include "mt76x02_mcu.h"
int mt76x02_mcu_parse_response(struct mt76_dev *mdev, int cmd,
struct sk_buff *skb, int seq)
{
struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
u32 *rxfce;
if (!skb) {
dev_err(mdev->dev,
"MCU message %d (seq %d) timed out\n", cmd,
seq);
dev->mcu_timeout = 1;
return -ETIMEDOUT;
}
rxfce = (u32 *)skb->cb;
if (seq != FIELD_GET(MT_RX_FCE_INFO_CMD_SEQ, *rxfce))
return -EAGAIN;
return 0;
}
EXPORT_SYMBOL_GPL(mt76x02_mcu_parse_response);
int mt76x02_mcu_msg_send(struct mt76_dev *mdev, int cmd, const void *data,
int len, bool wait_resp)
{
struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
unsigned long expires = jiffies + HZ;
struct sk_buff *skb;
u32 tx_info;
int ret;
u8 seq;
if (dev->mcu_timeout)
return -EIO;
skb = mt76_mcu_msg_alloc(mdev, data, len);
if (!skb)
return -ENOMEM;
mutex_lock(&mdev->mcu.mutex);
seq = ++mdev->mcu.msg_seq & 0xf;
if (!seq)
seq = ++mdev->mcu.msg_seq & 0xf;
tx_info = MT_MCU_MSG_TYPE_CMD |
FIELD_PREP(MT_MCU_MSG_CMD_TYPE, cmd) |
FIELD_PREP(MT_MCU_MSG_CMD_SEQ, seq) |
FIELD_PREP(MT_MCU_MSG_PORT, CPU_TX_PORT) |
FIELD_PREP(MT_MCU_MSG_LEN, skb->len);
ret = mt76_tx_queue_skb_raw(dev, mdev->q_mcu[MT_MCUQ_WM], skb, tx_info);
if (ret)
goto out;
while (wait_resp) {
skb = mt76_mcu_get_response(&dev->mt76, expires);
ret = mt76x02_mcu_parse_response(mdev, cmd, skb, seq);
dev_kfree_skb(skb);
if (ret != -EAGAIN)
break;
}
out:
mutex_unlock(&mdev->mcu.mutex);
return ret;
}
EXPORT_SYMBOL_GPL(mt76x02_mcu_msg_send);
int mt76x02_mcu_function_select(struct mt76x02_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),
};
bool wait = false;
if (func != Q_SELECT)
wait = true;
return mt76_mcu_send_msg(&dev->mt76, CMD_FUN_SET_OP, &msg,
sizeof(msg), wait);
}
EXPORT_SYMBOL_GPL(mt76x02_mcu_function_select);
int mt76x02_mcu_set_radio_state(struct mt76x02_dev *dev, bool on)
{
struct {
__le32 mode;
__le32 level;
} __packed __aligned(4) msg = {
.mode = cpu_to_le32(on ? RADIO_ON : RADIO_OFF),
.level = cpu_to_le32(0),
};
return mt76_mcu_send_msg(&dev->mt76, CMD_POWER_SAVING_OP, &msg,
sizeof(msg), false);
}
EXPORT_SYMBOL_GPL(mt76x02_mcu_set_radio_state);
int mt76x02_mcu_calibrate(struct mt76x02_dev *dev, int type, u32 param)
{
struct {
__le32 id;
__le32 value;
} __packed __aligned(4) msg = {
.id = cpu_to_le32(type),
.value = cpu_to_le32(param),
};
bool is_mt76x2e = mt76_is_mmio(&dev->mt76) && is_mt76x2(dev);
int ret;
if (is_mt76x2e)
mt76_rmw(dev, MT_MCU_COM_REG0, BIT(31), 0);
ret = mt76_mcu_send_msg(&dev->mt76, CMD_CALIBRATION_OP, &msg,
sizeof(msg), true);
if (ret)
return ret;
if (is_mt76x2e &&
WARN_ON(!mt76_poll_msec(dev, MT_MCU_COM_REG0,
BIT(31), BIT(31), 100)))
return -ETIMEDOUT;
return 0;
}
EXPORT_SYMBOL_GPL(mt76x02_mcu_calibrate);
int mt76x02_mcu_cleanup(struct mt76x02_dev *dev)
{
struct sk_buff *skb;
mt76_wr(dev, MT_MCU_INT_LEVEL, 1);
usleep_range(20000, 30000);
while ((skb = skb_dequeue(&dev->mt76.mcu.res_q)) != NULL)
dev_kfree_skb(skb);
return 0;
}
EXPORT_SYMBOL_GPL(mt76x02_mcu_cleanup);
void mt76x02_set_ethtool_fwver(struct mt76x02_dev *dev,
const struct mt76x02_fw_header *h)
{
u16 bld = le16_to_cpu(h->build_ver);
u16 ver = le16_to_cpu(h->fw_ver);
snprintf(dev->mt76.hw->wiphy->fw_version,
sizeof(dev->mt76.hw->wiphy->fw_version),
"%d.%d.%02d-b%x",
(ver >> 12) & 0xf, (ver >> 8) & 0xf, ver & 0xf, bld);
}
EXPORT_SYMBOL_GPL(mt76x02_set_ethtool_fwver);
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