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path: root/drivers/net/wireless/mediatek/mt76/mt7603/mcu.c
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Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/mt7603/mcu.c')
-rw-r--r--drivers/net/wireless/mediatek/mt76/mt7603/mcu.c479
1 files changed, 479 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 0000000..02b2bd6
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt7603/mcu.c
@@ -0,0 +1,479 @@
+// 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_msg_send(struct mt7603_dev *dev, struct sk_buff *skb,
+ int cmd, int *wait_seq)
+{
+ int hdrlen = dev->mcu_running ? sizeof(struct mt7603_mcu_txd) : 12;
+ struct mt76_dev *mdev = &dev->mt76;
+ struct mt7603_mcu_txd *txd;
+ u8 seq;
+
+ seq = ++mdev->mmio.mcu.msg_seq & 0xf;
+ if (!seq)
+ seq = ++mdev->mmio.mcu.msg_seq & 0xf;
+
+ txd = (struct mt7603_mcu_txd *)skb_push(skb, hdrlen);
+ memset(txd, 0, 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, MT_TXQ_MCU, skb, 0);
+}
+
+static int
+mt7603_mcu_msg_send(struct mt76_dev *mdev, int cmd, const void *data,
+ int len, bool wait_resp)
+{
+ struct mt7603_dev *dev = container_of(mdev, struct mt7603_dev, mt76);
+ unsigned long expires = jiffies + 3 * HZ;
+ struct mt7603_mcu_rxd *rxd;
+ struct sk_buff *skb;
+ int ret, seq;
+
+ skb = mt7603_mcu_msg_alloc(data, len);
+ if (!skb)
+ return -ENOMEM;
+
+ mutex_lock(&mdev->mmio.mcu.mutex);
+
+ ret = __mt7603_mcu_msg_send(dev, skb, cmd, &seq);
+ if (ret)
+ goto out;
+
+ while (wait_resp) {
+ bool check_seq = false;
+
+ skb = mt76_mcu_get_response(&dev->mt76, expires);
+ if (!skb) {
+ dev_err(mdev->dev,
+ "MCU message %d (seq %d) timed out\n",
+ cmd, seq);
+ dev->mcu_hang = MT7603_WATCHDOG_TIMEOUT;
+ ret = -ETIMEDOUT;
+ break;
+ }
+
+ rxd = (struct mt7603_mcu_rxd *)skb->data;
+ if (seq == rxd->seq)
+ check_seq = true;
+
+ dev_kfree_skb(skb);
+
+ if (check_seq)
+ break;
+ }
+
+out:
+ mutex_unlock(&mdev->mmio.mcu.mutex);
+
+ return ret;
+}
+
+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_send_firmware(struct mt7603_dev *dev, const void *data, int len)
+{
+ int cur_len, ret = 0;
+
+ while (len > 0) {
+ cur_len = min_t(int, 4096 - sizeof(struct mt7603_mcu_txd),
+ len);
+
+ ret = __mt76_mcu_send_msg(&dev->mt76, -MCU_CMD_FW_SCATTER,
+ data, cur_len, false);
+ if (ret)
+ break;
+
+ data += cur_len;
+ len -= cur_len;
+ }
+
+ return ret;
+}
+
+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 = mt7603_mcu_send_firmware(dev, 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 = {
+ .mcu_send_msg = mt7603_mcu_msg_send,
+ .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.mmio.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->mt76.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->mt76.chandef;
+ struct ieee80211_hw *hw = mt76_hw(dev);
+ int n_chains = hweight8(dev->mt76.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->mt76.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->mt76.antenna_mask == 3)
+ tx_power -= 6;
+ tx_power = min(tx_power, dev->tx_power_limit);
+
+ dev->mt76.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);
+}
generated by cgit v1.2.3 (git 2.0.4) at 2024-04-20 04:21:29 +0000