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// SPDX-License-Identifier: ISC
#include <linux/firmware.h>
#include "mt7603.h"
#include "mcu.h"
#include "eeprom.h"
#define MCU_SKB_RESERVE 8
struct mt7603_fw_trailer {
char fw_ver[10];
char build_date[15];
__le32 dl_len;
} __packed;
static int
mt7603_mcu_parse_response(struct mt76_dev *mdev, int cmd,
struct sk_buff *skb, int seq)
{
struct mt7603_dev *dev = container_of(mdev, struct mt7603_dev, mt76);
struct mt7603_mcu_rxd *rxd;
if (!skb) {
dev_err(mdev->dev,
"MCU message %d (seq %d) timed out\n",
cmd, seq);
dev->mcu_hang = MT7603_WATCHDOG_TIMEOUT;
return -ETIMEDOUT;
}
rxd = (struct mt7603_mcu_rxd *)skb->data;
if (seq != rxd->seq)
return -EAGAIN;
return 0;
}
static int
mt7603_mcu_skb_send_msg(struct mt76_dev *mdev, struct sk_buff *skb,
int cmd, int *wait_seq)
{
struct mt7603_dev *dev = container_of(mdev, struct mt7603_dev, mt76);
int hdrlen = dev->mcu_running ? sizeof(struct mt7603_mcu_txd) : 12;
struct mt7603_mcu_txd *txd;
u8 seq;
mdev->mcu.timeout = 3 * HZ;
seq = ++mdev->mcu.msg_seq & 0xf;
if (!seq)
seq = ++mdev->mcu.msg_seq & 0xf;
txd = (struct mt7603_mcu_txd *)skb_push(skb, hdrlen);
txd->len = cpu_to_le16(skb->len);
if (cmd == -MCU_CMD_FW_SCATTER)
txd->pq_id = cpu_to_le16(MCU_PORT_QUEUE_FW);
else
txd->pq_id = cpu_to_le16(MCU_PORT_QUEUE);
txd->pkt_type = MCU_PKT_ID;
txd->seq = seq;
if (cmd < 0) {
txd->cid = -cmd;
txd->set_query = MCU_Q_NA;
} else {
txd->cid = MCU_CMD_EXT_CID;
txd->ext_cid = cmd;
txd->set_query = MCU_Q_SET;
txd->ext_cid_ack = 1;
}
if (wait_seq)
*wait_seq = seq;
return mt76_tx_queue_skb_raw(dev, mdev->q_mcu[MT_MCUQ_WM], skb, 0);
}
static int
mt7603_mcu_init_download(struct mt7603_dev *dev, u32 addr, u32 len)
{
struct {
__le32 addr;
__le32 len;
__le32 mode;
} req = {
.addr = cpu_to_le32(addr),
.len = cpu_to_le32(len),
.mode = cpu_to_le32(BIT(31)),
};
return mt76_mcu_send_msg(&dev->mt76, -MCU_CMD_TARGET_ADDRESS_LEN_REQ,
&req, sizeof(req), true);
}
static int
mt7603_mcu_start_firmware(struct mt7603_dev *dev, u32 addr)
{
struct {
__le32 override;
__le32 addr;
} req = {
.override = cpu_to_le32(addr ? 1 : 0),
.addr = cpu_to_le32(addr),
};
return mt76_mcu_send_msg(&dev->mt76, -MCU_CMD_FW_START_REQ, &req,
sizeof(req), true);
}
static int
mt7603_mcu_restart(struct mt76_dev *dev)
{
return mt76_mcu_send_msg(dev, -MCU_CMD_RESTART_DL_REQ, NULL, 0, true);
}
static int mt7603_load_firmware(struct mt7603_dev *dev)
{
const struct firmware *fw;
const struct mt7603_fw_trailer *hdr;
const char *firmware;
int dl_len;
u32 addr, val;
int ret;
if (is_mt7628(dev)) {
if (mt76xx_rev(dev) == MT7628_REV_E1)
firmware = MT7628_FIRMWARE_E1;
else
firmware = MT7628_FIRMWARE_E2;
} else {
if (mt76xx_rev(dev) < MT7603_REV_E2)
firmware = MT7603_FIRMWARE_E1;
else
firmware = MT7603_FIRMWARE_E2;
}
ret = request_firmware(&fw, firmware, dev->mt76.dev);
if (ret)
return ret;
if (!fw || !fw->data || fw->size < sizeof(*hdr)) {
dev_err(dev->mt76.dev, "Invalid firmware\n");
ret = -EINVAL;
goto out;
}
hdr = (const struct mt7603_fw_trailer *)(fw->data + fw->size -
sizeof(*hdr));
dev_info(dev->mt76.dev, "Firmware Version: %.10s\n", hdr->fw_ver);
dev_info(dev->mt76.dev, "Build Time: %.15s\n", hdr->build_date);
addr = mt7603_reg_map(dev, 0x50012498);
mt76_wr(dev, addr, 0x5);
mt76_wr(dev, addr, 0x5);
udelay(1);
/* switch to bypass mode */
mt76_rmw(dev, MT_SCH_4, MT_SCH_4_FORCE_QID,
MT_SCH_4_BYPASS | FIELD_PREP(MT_SCH_4_FORCE_QID, 5));
val = mt76_rr(dev, MT_TOP_MISC2);
if (val & BIT(1)) {
dev_info(dev->mt76.dev, "Firmware already running...\n");
goto running;
}
if (!mt76_poll_msec(dev, MT_TOP_MISC2, BIT(0) | BIT(1), BIT(0), 500)) {
dev_err(dev->mt76.dev, "Timeout waiting for ROM code to become ready\n");
ret = -EIO;
goto out;
}
dl_len = le32_to_cpu(hdr->dl_len) + 4;
ret = mt7603_mcu_init_download(dev, MCU_FIRMWARE_ADDRESS, dl_len);
if (ret) {
dev_err(dev->mt76.dev, "Download request failed\n");
goto out;
}
ret = mt76_mcu_send_firmware(&dev->mt76, -MCU_CMD_FW_SCATTER,
fw->data, dl_len);
if (ret) {
dev_err(dev->mt76.dev, "Failed to send firmware to device\n");
goto out;
}
ret = mt7603_mcu_start_firmware(dev, MCU_FIRMWARE_ADDRESS);
if (ret) {
dev_err(dev->mt76.dev, "Failed to start firmware\n");
goto out;
}
if (!mt76_poll_msec(dev, MT_TOP_MISC2, BIT(1), BIT(1), 500)) {
dev_err(dev->mt76.dev, "Timeout waiting for firmware to initialize\n");
ret = -EIO;
goto out;
}
running:
mt76_clear(dev, MT_SCH_4, MT_SCH_4_FORCE_QID | MT_SCH_4_BYPASS);
mt76_set(dev, MT_SCH_4, BIT(8));
mt76_clear(dev, MT_SCH_4, BIT(8));
dev->mcu_running = true;
snprintf(dev->mt76.hw->wiphy->fw_version,
sizeof(dev->mt76.hw->wiphy->fw_version),
"%.10s-%.15s", hdr->fw_ver, hdr->build_date);
dev_info(dev->mt76.dev, "firmware init done\n");
out:
release_firmware(fw);
return ret;
}
int mt7603_mcu_init(struct mt7603_dev *dev)
{
static const struct mt76_mcu_ops mt7603_mcu_ops = {
.headroom = sizeof(struct mt7603_mcu_txd),
.mcu_skb_send_msg = mt7603_mcu_skb_send_msg,
.mcu_parse_response = mt7603_mcu_parse_response,
.mcu_restart = mt7603_mcu_restart,
};
dev->mt76.mcu_ops = &mt7603_mcu_ops;
return mt7603_load_firmware(dev);
}
void mt7603_mcu_exit(struct mt7603_dev *dev)
{
__mt76_mcu_restart(&dev->mt76);
skb_queue_purge(&dev->mt76.mcu.res_q);
}
int mt7603_mcu_set_eeprom(struct mt7603_dev *dev)
{
static const u16 req_fields[] = {
#define WORD(_start) \
_start, \
_start + 1
#define GROUP_2G(_start) \
WORD(_start), \
WORD(_start + 2), \
WORD(_start + 4)
MT_EE_NIC_CONF_0 + 1,
WORD(MT_EE_NIC_CONF_1),
MT_EE_WIFI_RF_SETTING,
MT_EE_TX_POWER_DELTA_BW40,
MT_EE_TX_POWER_DELTA_BW80 + 1,
MT_EE_TX_POWER_EXT_PA_5G,
MT_EE_TEMP_SENSOR_CAL,
GROUP_2G(MT_EE_TX_POWER_0_START_2G),
GROUP_2G(MT_EE_TX_POWER_1_START_2G),
WORD(MT_EE_TX_POWER_CCK),
WORD(MT_EE_TX_POWER_OFDM_2G_6M),
WORD(MT_EE_TX_POWER_OFDM_2G_24M),
WORD(MT_EE_TX_POWER_OFDM_2G_54M),
WORD(MT_EE_TX_POWER_HT_BPSK_QPSK),
WORD(MT_EE_TX_POWER_HT_16_64_QAM),
WORD(MT_EE_TX_POWER_HT_64_QAM),
MT_EE_ELAN_RX_MODE_GAIN,
MT_EE_ELAN_RX_MODE_NF,
MT_EE_ELAN_RX_MODE_P1DB,
MT_EE_ELAN_BYPASS_MODE_GAIN,
MT_EE_ELAN_BYPASS_MODE_NF,
MT_EE_ELAN_BYPASS_MODE_P1DB,
WORD(MT_EE_STEP_NUM_NEG_6_7),
WORD(MT_EE_STEP_NUM_NEG_4_5),
WORD(MT_EE_STEP_NUM_NEG_2_3),
WORD(MT_EE_STEP_NUM_NEG_0_1),
WORD(MT_EE_REF_STEP_24G),
WORD(MT_EE_STEP_NUM_PLUS_1_2),
WORD(MT_EE_STEP_NUM_PLUS_3_4),
WORD(MT_EE_STEP_NUM_PLUS_5_6),
MT_EE_STEP_NUM_PLUS_7,
MT_EE_XTAL_FREQ_OFFSET,
MT_EE_XTAL_TRIM_2_COMP,
MT_EE_XTAL_TRIM_3_COMP,
MT_EE_XTAL_WF_RFCAL,
/* unknown fields below */
WORD(0x24),
0x34,
0x39,
0x3b,
WORD(0x42),
WORD(0x9e),
0xf2,
WORD(0xf8),
0xfa,
0x12e,
WORD(0x130), WORD(0x132), WORD(0x134), WORD(0x136),
WORD(0x138), WORD(0x13a), WORD(0x13c), WORD(0x13e),
#undef GROUP_2G
#undef WORD
};
struct req_data {
__le16 addr;
u8 val;
u8 pad;
} __packed;
struct {
u8 buffer_mode;
u8 len;
u8 pad[2];
} req_hdr = {
.buffer_mode = 1,
.len = ARRAY_SIZE(req_fields) - 1,
};
const int size = 0xff * sizeof(struct req_data);
u8 *req, *eep = (u8 *)dev->mt76.eeprom.data;
int i, ret, len = sizeof(req_hdr) + size;
struct req_data *data;
BUILD_BUG_ON(ARRAY_SIZE(req_fields) * sizeof(*data) > size);
req = kmalloc(len, GFP_KERNEL);
if (!req)
return -ENOMEM;
memcpy(req, &req_hdr, sizeof(req_hdr));
data = (struct req_data *)(req + sizeof(req_hdr));
memset(data, 0, size);
for (i = 0; i < ARRAY_SIZE(req_fields); i++) {
data[i].addr = cpu_to_le16(req_fields[i]);
data[i].val = eep[req_fields[i]];
}
ret = mt76_mcu_send_msg(&dev->mt76, MCU_EXT_CMD_EFUSE_BUFFER_MODE,
req, len, true);
kfree(req);
return ret;
}
static int mt7603_mcu_set_tx_power(struct mt7603_dev *dev)
{
struct {
u8 center_channel;
u8 tssi;
u8 temp_comp;
u8 target_power[2];
u8 rate_power_delta[14];
u8 bw_power_delta;
u8 ch_power_delta[6];
u8 temp_comp_power[17];
u8 reserved;
} req = {
.center_channel = dev->mphy.chandef.chan->hw_value,
#define EEP_VAL(n) ((u8 *)dev->mt76.eeprom.data)[n]
.tssi = EEP_VAL(MT_EE_NIC_CONF_1 + 1),
.temp_comp = EEP_VAL(MT_EE_NIC_CONF_1),
.target_power = {
EEP_VAL(MT_EE_TX_POWER_0_START_2G + 2),
EEP_VAL(MT_EE_TX_POWER_1_START_2G + 2)
},
.bw_power_delta = EEP_VAL(MT_EE_TX_POWER_DELTA_BW40),
.ch_power_delta = {
EEP_VAL(MT_EE_TX_POWER_0_START_2G + 3),
EEP_VAL(MT_EE_TX_POWER_0_START_2G + 4),
EEP_VAL(MT_EE_TX_POWER_0_START_2G + 5),
EEP_VAL(MT_EE_TX_POWER_1_START_2G + 3),
EEP_VAL(MT_EE_TX_POWER_1_START_2G + 4),
EEP_VAL(MT_EE_TX_POWER_1_START_2G + 5)
},
#undef EEP_VAL
};
u8 *eep = (u8 *)dev->mt76.eeprom.data;
memcpy(req.rate_power_delta, eep + MT_EE_TX_POWER_CCK,
sizeof(req.rate_power_delta));
memcpy(req.temp_comp_power, eep + MT_EE_STEP_NUM_NEG_6_7,
sizeof(req.temp_comp_power));
return mt76_mcu_send_msg(&dev->mt76, MCU_EXT_CMD_SET_TX_POWER_CTRL,
&req, sizeof(req), true);
}
int mt7603_mcu_set_channel(struct mt7603_dev *dev)
{
struct cfg80211_chan_def *chandef = &dev->mphy.chandef;
struct ieee80211_hw *hw = mt76_hw(dev);
int n_chains = hweight8(dev->mphy.antenna_mask);
struct {
u8 control_chan;
u8 center_chan;
u8 bw;
u8 tx_streams;
u8 rx_streams;
u8 _res0[7];
u8 txpower[21];
u8 _res1[3];
} req = {
.control_chan = chandef->chan->hw_value,
.center_chan = chandef->chan->hw_value,
.bw = MT_BW_20,
.tx_streams = n_chains,
.rx_streams = n_chains,
};
s8 tx_power;
int i, ret;
if (dev->mphy.chandef.width == NL80211_CHAN_WIDTH_40) {
req.bw = MT_BW_40;
if (chandef->center_freq1 > chandef->chan->center_freq)
req.center_chan += 2;
else
req.center_chan -= 2;
}
tx_power = hw->conf.power_level * 2;
if (dev->mphy.antenna_mask == 3)
tx_power -= 6;
tx_power = min(tx_power, dev->tx_power_limit);
dev->mphy.txpower_cur = tx_power;
for (i = 0; i < ARRAY_SIZE(req.txpower); i++)
req.txpower[i] = tx_power;
ret = mt76_mcu_send_msg(&dev->mt76, MCU_EXT_CMD_CHANNEL_SWITCH, &req,
sizeof(req), true);
if (ret)
return ret;
return mt7603_mcu_set_tx_power(dev);
}
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