developer | 0f312e8 | 2022-11-01 12:31:52 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: ISC |
| 2 | /* Copyright (C) 2020 MediaTek Inc. */ |
| 3 | |
| 4 | #include <linux/firmware.h> |
| 5 | #include "mt7915.h" |
| 6 | #include "eeprom.h" |
| 7 | |
| 8 | static int mt7915_eeprom_load_precal(struct mt7915_dev *dev) |
| 9 | { |
| 10 | struct mt76_dev *mdev = &dev->mt76; |
| 11 | u8 *eeprom = mdev->eeprom.data; |
| 12 | u32 val = eeprom[MT_EE_DO_PRE_CAL]; |
| 13 | u32 offs; |
| 14 | |
| 15 | if (!dev->flash_mode) |
| 16 | return 0; |
| 17 | |
| 18 | if (val != (MT_EE_WIFI_CAL_DPD | MT_EE_WIFI_CAL_GROUP)) |
| 19 | return 0; |
| 20 | |
| 21 | val = MT_EE_CAL_GROUP_SIZE + MT_EE_CAL_DPD_SIZE; |
| 22 | dev->cal = devm_kzalloc(mdev->dev, val, GFP_KERNEL); |
| 23 | if (!dev->cal) |
| 24 | return -ENOMEM; |
| 25 | |
| 26 | offs = is_mt7915(&dev->mt76) ? MT_EE_PRECAL : MT_EE_PRECAL_V2; |
| 27 | |
| 28 | return mt76_get_of_eeprom(mdev, dev->cal, offs, val); |
| 29 | } |
| 30 | |
| 31 | static int mt7915_check_eeprom(struct mt7915_dev *dev) |
| 32 | { |
| 33 | u8 *eeprom = dev->mt76.eeprom.data; |
| 34 | u16 val = get_unaligned_le16(eeprom); |
| 35 | |
| 36 | switch (val) { |
| 37 | case 0x7915: |
| 38 | case 0x7916: |
| 39 | case 0x7986: |
| 40 | return 0; |
| 41 | default: |
| 42 | return -EINVAL; |
| 43 | } |
| 44 | } |
| 45 | |
| 46 | static char *mt7915_eeprom_name(struct mt7915_dev *dev) |
| 47 | { |
| 48 | switch (mt76_chip(&dev->mt76)) { |
| 49 | case 0x7915: |
| 50 | return dev->dbdc_support ? |
| 51 | MT7915_EEPROM_DEFAULT_DBDC : MT7915_EEPROM_DEFAULT; |
| 52 | case 0x7986: |
| 53 | switch (mt7915_check_adie(dev, true)) { |
| 54 | case MT7976_ONE_ADIE_DBDC: |
| 55 | return MT7986_EEPROM_MT7976_DEFAULT_DBDC; |
| 56 | case MT7975_ONE_ADIE: |
| 57 | return MT7986_EEPROM_MT7975_DEFAULT; |
| 58 | case MT7976_ONE_ADIE: |
| 59 | return MT7986_EEPROM_MT7976_DEFAULT; |
| 60 | case MT7975_DUAL_ADIE: |
| 61 | return MT7986_EEPROM_MT7975_DUAL_DEFAULT; |
| 62 | case MT7976_DUAL_ADIE: |
| 63 | return MT7986_EEPROM_MT7976_DUAL_DEFAULT; |
| 64 | default: |
| 65 | break; |
| 66 | } |
| 67 | return NULL; |
| 68 | default: |
| 69 | return MT7916_EEPROM_DEFAULT; |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | static int |
| 74 | mt7915_eeprom_load_default(struct mt7915_dev *dev) |
| 75 | { |
| 76 | u8 *eeprom = dev->mt76.eeprom.data; |
| 77 | const struct firmware *fw = NULL; |
| 78 | int ret; |
| 79 | |
| 80 | ret = request_firmware(&fw, mt7915_eeprom_name(dev), dev->mt76.dev); |
| 81 | if (ret) |
| 82 | return ret; |
| 83 | |
| 84 | if (!fw || !fw->data) { |
| 85 | dev_err(dev->mt76.dev, "Invalid default bin\n"); |
| 86 | ret = -EINVAL; |
| 87 | goto out; |
| 88 | } |
| 89 | |
| 90 | memcpy(eeprom, fw->data, mt7915_eeprom_size(dev)); |
| 91 | dev->flash_mode = true; |
| 92 | |
| 93 | out: |
| 94 | release_firmware(fw); |
| 95 | |
| 96 | return ret; |
| 97 | } |
| 98 | |
| 99 | static int mt7915_eeprom_load(struct mt7915_dev *dev) |
| 100 | { |
| 101 | int ret; |
| 102 | u16 eeprom_size = mt7915_eeprom_size(dev); |
| 103 | |
| 104 | ret = mt76_eeprom_init(&dev->mt76, eeprom_size); |
| 105 | if (ret < 0) |
| 106 | return ret; |
| 107 | |
| 108 | if (ret) { |
| 109 | dev->flash_mode = true; |
| 110 | } else { |
| 111 | u8 free_block_num; |
| 112 | u32 block_num, i; |
| 113 | |
| 114 | mt7915_mcu_get_eeprom_free_block(dev, &free_block_num); |
| 115 | /* efuse info not enough */ |
| 116 | if (free_block_num >= 29) |
| 117 | return -EINVAL; |
| 118 | |
| 119 | /* read eeprom data from efuse */ |
| 120 | block_num = DIV_ROUND_UP(eeprom_size, |
| 121 | MT7915_EEPROM_BLOCK_SIZE); |
| 122 | for (i = 0; i < block_num; i++) |
| 123 | mt7915_mcu_get_eeprom(dev, |
| 124 | i * MT7915_EEPROM_BLOCK_SIZE); |
| 125 | } |
| 126 | |
| 127 | return mt7915_check_eeprom(dev); |
| 128 | } |
| 129 | |
| 130 | static void mt7915_eeprom_parse_band_config(struct mt7915_phy *phy) |
| 131 | { |
| 132 | struct mt7915_dev *dev = phy->dev; |
| 133 | u8 *eeprom = dev->mt76.eeprom.data; |
| 134 | u32 val; |
| 135 | |
| 136 | val = eeprom[MT_EE_WIFI_CONF + phy->band_idx]; |
| 137 | val = FIELD_GET(MT_EE_WIFI_CONF0_BAND_SEL, val); |
| 138 | |
| 139 | if (!is_mt7915(&dev->mt76)) { |
| 140 | switch (val) { |
| 141 | case MT_EE_V2_BAND_SEL_5GHZ: |
| 142 | phy->mt76->cap.has_5ghz = true; |
| 143 | return; |
| 144 | case MT_EE_V2_BAND_SEL_6GHZ: |
| 145 | phy->mt76->cap.has_6ghz = true; |
| 146 | return; |
| 147 | case MT_EE_V2_BAND_SEL_5GHZ_6GHZ: |
| 148 | phy->mt76->cap.has_5ghz = true; |
| 149 | phy->mt76->cap.has_6ghz = true; |
| 150 | return; |
| 151 | default: |
| 152 | phy->mt76->cap.has_2ghz = true; |
| 153 | return; |
| 154 | } |
| 155 | } else if (val == MT_EE_BAND_SEL_DEFAULT && dev->dbdc_support) { |
| 156 | val = phy->band_idx ? MT_EE_BAND_SEL_5GHZ : MT_EE_BAND_SEL_2GHZ; |
| 157 | } |
| 158 | |
| 159 | switch (val) { |
| 160 | case MT_EE_BAND_SEL_5GHZ: |
| 161 | phy->mt76->cap.has_5ghz = true; |
| 162 | break; |
| 163 | case MT_EE_BAND_SEL_2GHZ: |
| 164 | phy->mt76->cap.has_2ghz = true; |
| 165 | break; |
| 166 | default: |
| 167 | phy->mt76->cap.has_2ghz = true; |
| 168 | phy->mt76->cap.has_5ghz = true; |
| 169 | break; |
| 170 | } |
| 171 | } |
| 172 | |
| 173 | void mt7915_eeprom_parse_hw_cap(struct mt7915_dev *dev, |
| 174 | struct mt7915_phy *phy) |
| 175 | { |
| 176 | u8 path, nss, nss_max = 4, *eeprom = dev->mt76.eeprom.data; |
| 177 | struct mt76_phy *mphy = phy->mt76; |
| 178 | |
| 179 | mt7915_eeprom_parse_band_config(phy); |
| 180 | |
| 181 | /* read tx/rx path from eeprom */ |
| 182 | if (is_mt7915(&dev->mt76)) { |
| 183 | path = FIELD_GET(MT_EE_WIFI_CONF0_TX_PATH, |
| 184 | eeprom[MT_EE_WIFI_CONF]); |
| 185 | } else { |
| 186 | path = FIELD_GET(MT_EE_WIFI_CONF0_TX_PATH, |
| 187 | eeprom[MT_EE_WIFI_CONF + phy->band_idx]); |
| 188 | } |
| 189 | |
| 190 | if (!path || path > 4) |
| 191 | path = 4; |
| 192 | |
| 193 | /* read tx/rx stream */ |
| 194 | nss = path; |
| 195 | if (dev->dbdc_support) { |
| 196 | if (is_mt7915(&dev->mt76)) { |
| 197 | nss = FIELD_GET(MT_EE_WIFI_CONF3_TX_PATH_B0, |
| 198 | eeprom[MT_EE_WIFI_CONF + 3]); |
| 199 | if (phy->band_idx) |
| 200 | nss = FIELD_GET(MT_EE_WIFI_CONF3_TX_PATH_B1, |
| 201 | eeprom[MT_EE_WIFI_CONF + 3]); |
| 202 | } else { |
| 203 | nss = FIELD_GET(MT_EE_WIFI_CONF_STREAM_NUM, |
| 204 | eeprom[MT_EE_WIFI_CONF + 2 + phy->band_idx]); |
| 205 | } |
| 206 | |
| 207 | if (!is_mt7986(&dev->mt76)) |
| 208 | nss_max = 2; |
| 209 | } |
| 210 | |
| 211 | nss = min_t(u8, min_t(u8, nss_max, nss), path); |
| 212 | |
| 213 | mphy->chainmask = BIT(path) - 1; |
| 214 | if (phy->band_idx) |
| 215 | mphy->chainmask <<= dev->chainshift; |
| 216 | mphy->antenna_mask = BIT(nss) - 1; |
| 217 | dev->chainmask |= mphy->chainmask; |
| 218 | dev->chainshift = hweight8(dev->mphy.chainmask); |
| 219 | } |
| 220 | |
| 221 | int mt7915_eeprom_init(struct mt7915_dev *dev) |
| 222 | { |
| 223 | int ret; |
| 224 | |
| 225 | ret = mt7915_eeprom_load(dev); |
| 226 | if (ret < 0) { |
| 227 | if (ret != -EINVAL) |
| 228 | return ret; |
| 229 | |
| 230 | dev_warn(dev->mt76.dev, "eeprom load fail, use default bin\n"); |
| 231 | ret = mt7915_eeprom_load_default(dev); |
| 232 | if (ret) |
| 233 | return ret; |
| 234 | } |
| 235 | |
| 236 | ret = mt7915_eeprom_load_precal(dev); |
| 237 | if (ret) |
| 238 | return ret; |
| 239 | |
| 240 | mt7915_eeprom_parse_hw_cap(dev, &dev->phy); |
| 241 | memcpy(dev->mphy.macaddr, dev->mt76.eeprom.data + MT_EE_MAC_ADDR, |
| 242 | ETH_ALEN); |
| 243 | |
| 244 | mt76_eeprom_override(&dev->mphy); |
| 245 | |
| 246 | return 0; |
| 247 | } |
| 248 | |
| 249 | int mt7915_eeprom_get_target_power(struct mt7915_dev *dev, |
| 250 | struct ieee80211_channel *chan, |
| 251 | u8 chain_idx) |
| 252 | { |
| 253 | u8 *eeprom = dev->mt76.eeprom.data; |
| 254 | int index, target_power; |
| 255 | bool tssi_on, is_7976; |
| 256 | |
| 257 | if (chain_idx > 3) |
| 258 | return -EINVAL; |
| 259 | |
| 260 | tssi_on = mt7915_tssi_enabled(dev, chan->band); |
| 261 | is_7976 = mt7915_check_adie(dev, false) || is_mt7916(&dev->mt76); |
| 262 | |
| 263 | if (chan->band == NL80211_BAND_2GHZ) { |
| 264 | if (is_7976) { |
| 265 | index = MT_EE_TX0_POWER_2G_V2 + chain_idx; |
| 266 | target_power = eeprom[index]; |
| 267 | } else { |
| 268 | index = MT_EE_TX0_POWER_2G + chain_idx * 3; |
| 269 | target_power = eeprom[index]; |
| 270 | |
| 271 | if (!tssi_on) |
| 272 | target_power += eeprom[index + 1]; |
| 273 | } |
| 274 | } else if (chan->band == NL80211_BAND_5GHZ) { |
| 275 | int group = mt7915_get_channel_group_5g(chan->hw_value, is_7976); |
| 276 | |
| 277 | if (is_7976) { |
| 278 | index = MT_EE_TX0_POWER_5G_V2 + chain_idx * 5; |
| 279 | target_power = eeprom[index + group]; |
| 280 | } else { |
| 281 | index = MT_EE_TX0_POWER_5G + chain_idx * 12; |
| 282 | target_power = eeprom[index + group]; |
| 283 | |
| 284 | if (!tssi_on) |
| 285 | target_power += eeprom[index + 8]; |
| 286 | } |
| 287 | } else { |
| 288 | int group = mt7915_get_channel_group_6g(chan->hw_value); |
| 289 | |
| 290 | index = MT_EE_TX0_POWER_6G_V2 + chain_idx * 8; |
| 291 | target_power = is_7976 ? eeprom[index + group] : 0; |
| 292 | } |
| 293 | |
| 294 | return target_power; |
| 295 | } |
| 296 | |
| 297 | s8 mt7915_eeprom_get_power_delta(struct mt7915_dev *dev, int band) |
| 298 | { |
| 299 | u8 *eeprom = dev->mt76.eeprom.data; |
| 300 | u32 val, offs; |
| 301 | s8 delta; |
| 302 | bool is_7976 = mt7915_check_adie(dev, false) || is_mt7916(&dev->mt76); |
| 303 | |
| 304 | if (band == NL80211_BAND_2GHZ) |
| 305 | offs = is_7976 ? MT_EE_RATE_DELTA_2G_V2 : MT_EE_RATE_DELTA_2G; |
| 306 | else if (band == NL80211_BAND_5GHZ) |
| 307 | offs = is_7976 ? MT_EE_RATE_DELTA_5G_V2 : MT_EE_RATE_DELTA_5G; |
| 308 | else |
| 309 | offs = is_7976 ? MT_EE_RATE_DELTA_6G_V2 : 0; |
| 310 | |
| 311 | val = eeprom[offs]; |
| 312 | |
| 313 | if (!offs || !(val & MT_EE_RATE_DELTA_EN)) |
| 314 | return 0; |
| 315 | |
| 316 | delta = FIELD_GET(MT_EE_RATE_DELTA_MASK, val); |
| 317 | |
| 318 | return val & MT_EE_RATE_DELTA_SIGN ? delta : -delta; |
| 319 | } |
| 320 | |
| 321 | const u8 mt7915_sku_group_len[] = { |
| 322 | [SKU_CCK] = 4, |
| 323 | [SKU_OFDM] = 8, |
| 324 | [SKU_HT_BW20] = 8, |
| 325 | [SKU_HT_BW40] = 9, |
| 326 | [SKU_VHT_BW20] = 12, |
| 327 | [SKU_VHT_BW40] = 12, |
| 328 | [SKU_VHT_BW80] = 12, |
| 329 | [SKU_VHT_BW160] = 12, |
| 330 | [SKU_HE_RU26] = 12, |
| 331 | [SKU_HE_RU52] = 12, |
| 332 | [SKU_HE_RU106] = 12, |
| 333 | [SKU_HE_RU242] = 12, |
| 334 | [SKU_HE_RU484] = 12, |
| 335 | [SKU_HE_RU996] = 12, |
| 336 | [SKU_HE_RU2x996] = 12 |
| 337 | }; |