developer | b11a539 | 2022-03-31 00:34:47 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: ISC |
| 2 | /* |
| 3 | * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name> |
| 4 | * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> |
| 5 | */ |
| 6 | |
| 7 | #include <linux/kernel.h> |
| 8 | #include <linux/firmware.h> |
| 9 | #include <linux/delay.h> |
| 10 | |
| 11 | #include "mt76x02_mcu.h" |
| 12 | |
| 13 | int mt76x02_mcu_parse_response(struct mt76_dev *mdev, int cmd, |
| 14 | struct sk_buff *skb, int seq) |
| 15 | { |
| 16 | struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76); |
| 17 | u32 *rxfce; |
| 18 | |
| 19 | if (!skb) { |
| 20 | dev_err(mdev->dev, "MCU message %02x (seq %d) timed out\n", |
| 21 | abs(cmd), seq); |
| 22 | dev->mcu_timeout = 1; |
| 23 | return -ETIMEDOUT; |
| 24 | } |
| 25 | |
| 26 | rxfce = (u32 *)skb->cb; |
| 27 | if (seq != FIELD_GET(MT_RX_FCE_INFO_CMD_SEQ, *rxfce)) |
| 28 | return -EAGAIN; |
| 29 | |
| 30 | return 0; |
| 31 | } |
| 32 | EXPORT_SYMBOL_GPL(mt76x02_mcu_parse_response); |
| 33 | |
| 34 | int mt76x02_mcu_msg_send(struct mt76_dev *mdev, int cmd, const void *data, |
| 35 | int len, bool wait_resp) |
| 36 | { |
| 37 | struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76); |
| 38 | unsigned long expires = jiffies + HZ; |
| 39 | struct sk_buff *skb; |
| 40 | u32 tx_info; |
| 41 | int ret; |
| 42 | u8 seq; |
| 43 | |
| 44 | if (dev->mcu_timeout) |
| 45 | return -EIO; |
| 46 | |
| 47 | skb = mt76_mcu_msg_alloc(mdev, data, len); |
| 48 | if (!skb) |
| 49 | return -ENOMEM; |
| 50 | |
| 51 | mutex_lock(&mdev->mcu.mutex); |
| 52 | |
| 53 | seq = ++mdev->mcu.msg_seq & 0xf; |
| 54 | if (!seq) |
| 55 | seq = ++mdev->mcu.msg_seq & 0xf; |
| 56 | |
| 57 | tx_info = MT_MCU_MSG_TYPE_CMD | |
| 58 | FIELD_PREP(MT_MCU_MSG_CMD_TYPE, cmd) | |
| 59 | FIELD_PREP(MT_MCU_MSG_CMD_SEQ, seq) | |
| 60 | FIELD_PREP(MT_MCU_MSG_PORT, CPU_TX_PORT) | |
| 61 | FIELD_PREP(MT_MCU_MSG_LEN, skb->len); |
| 62 | |
| 63 | ret = mt76_tx_queue_skb_raw(dev, mdev->q_mcu[MT_MCUQ_WM], skb, tx_info); |
| 64 | if (ret) |
| 65 | goto out; |
| 66 | |
| 67 | while (wait_resp) { |
| 68 | skb = mt76_mcu_get_response(&dev->mt76, expires); |
| 69 | ret = mt76x02_mcu_parse_response(mdev, cmd, skb, seq); |
| 70 | dev_kfree_skb(skb); |
| 71 | if (ret != -EAGAIN) |
| 72 | break; |
| 73 | } |
| 74 | |
| 75 | out: |
| 76 | mutex_unlock(&mdev->mcu.mutex); |
| 77 | |
| 78 | return ret; |
| 79 | } |
| 80 | EXPORT_SYMBOL_GPL(mt76x02_mcu_msg_send); |
| 81 | |
| 82 | int mt76x02_mcu_function_select(struct mt76x02_dev *dev, enum mcu_function func, |
| 83 | u32 val) |
| 84 | { |
| 85 | struct { |
| 86 | __le32 id; |
| 87 | __le32 value; |
| 88 | } __packed __aligned(4) msg = { |
| 89 | .id = cpu_to_le32(func), |
| 90 | .value = cpu_to_le32(val), |
| 91 | }; |
| 92 | bool wait = false; |
| 93 | |
| 94 | if (func != Q_SELECT) |
| 95 | wait = true; |
| 96 | |
| 97 | return mt76_mcu_send_msg(&dev->mt76, CMD_FUN_SET_OP, &msg, |
| 98 | sizeof(msg), wait); |
| 99 | } |
| 100 | EXPORT_SYMBOL_GPL(mt76x02_mcu_function_select); |
| 101 | |
| 102 | int mt76x02_mcu_set_radio_state(struct mt76x02_dev *dev, bool on) |
| 103 | { |
| 104 | struct { |
| 105 | __le32 mode; |
| 106 | __le32 level; |
| 107 | } __packed __aligned(4) msg = { |
| 108 | .mode = cpu_to_le32(on ? RADIO_ON : RADIO_OFF), |
| 109 | .level = cpu_to_le32(0), |
| 110 | }; |
| 111 | |
| 112 | return mt76_mcu_send_msg(&dev->mt76, CMD_POWER_SAVING_OP, &msg, |
| 113 | sizeof(msg), false); |
| 114 | } |
| 115 | EXPORT_SYMBOL_GPL(mt76x02_mcu_set_radio_state); |
| 116 | |
| 117 | int mt76x02_mcu_calibrate(struct mt76x02_dev *dev, int type, u32 param) |
| 118 | { |
| 119 | struct { |
| 120 | __le32 id; |
| 121 | __le32 value; |
| 122 | } __packed __aligned(4) msg = { |
| 123 | .id = cpu_to_le32(type), |
| 124 | .value = cpu_to_le32(param), |
| 125 | }; |
| 126 | bool is_mt76x2e = mt76_is_mmio(&dev->mt76) && is_mt76x2(dev); |
| 127 | int ret; |
| 128 | |
| 129 | if (is_mt76x2e) |
| 130 | mt76_rmw(dev, MT_MCU_COM_REG0, BIT(31), 0); |
| 131 | |
| 132 | ret = mt76_mcu_send_msg(&dev->mt76, CMD_CALIBRATION_OP, &msg, |
| 133 | sizeof(msg), true); |
| 134 | if (ret) |
| 135 | return ret; |
| 136 | |
| 137 | if (is_mt76x2e && |
| 138 | WARN_ON(!mt76_poll_msec(dev, MT_MCU_COM_REG0, |
| 139 | BIT(31), BIT(31), 100))) |
| 140 | return -ETIMEDOUT; |
| 141 | |
| 142 | return 0; |
| 143 | } |
| 144 | EXPORT_SYMBOL_GPL(mt76x02_mcu_calibrate); |
| 145 | |
| 146 | int mt76x02_mcu_cleanup(struct mt76x02_dev *dev) |
| 147 | { |
| 148 | struct sk_buff *skb; |
| 149 | |
| 150 | mt76_wr(dev, MT_MCU_INT_LEVEL, 1); |
| 151 | usleep_range(20000, 30000); |
| 152 | |
| 153 | while ((skb = skb_dequeue(&dev->mt76.mcu.res_q)) != NULL) |
| 154 | dev_kfree_skb(skb); |
| 155 | |
| 156 | return 0; |
| 157 | } |
| 158 | EXPORT_SYMBOL_GPL(mt76x02_mcu_cleanup); |
| 159 | |
| 160 | void mt76x02_set_ethtool_fwver(struct mt76x02_dev *dev, |
| 161 | const struct mt76x02_fw_header *h) |
| 162 | { |
| 163 | u16 bld = le16_to_cpu(h->build_ver); |
| 164 | u16 ver = le16_to_cpu(h->fw_ver); |
| 165 | |
| 166 | snprintf(dev->mt76.hw->wiphy->fw_version, |
| 167 | sizeof(dev->mt76.hw->wiphy->fw_version), |
| 168 | "%d.%d.%02d-b%x", |
| 169 | (ver >> 12) & 0xf, (ver >> 8) & 0xf, ver & 0xf, bld); |
| 170 | } |
| 171 | EXPORT_SYMBOL_GPL(mt76x02_set_ethtool_fwver); |