Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 432 insertions, 0 deletions

diff --git a/drivers/net/wireless/mediatek/mt76/mt7603/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7603/mcu.c
new file mode 100644
index 0000000000..301668c3cc
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt7603/mcu.c
@@ -0,0 +1,432 @@
+// 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 %02x (seq %d) timed out\n",
+			abs(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,
+	};
+
+	dev->mt76.mcu_ops = &mt7603_mcu_ops;
+	return mt7603_load_firmware(dev);
+}
+
+void mt7603_mcu_exit(struct mt7603_dev *dev)
+{
+	mt7603_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 = hw->conf.power_level * 2;
+	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 = mt76_get_sar_power(&dev->mphy, chandef->chan, tx_power);
+	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);
+}