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 #define CHECK_EEPROM_ERR(match) (match ? 0 : -EINVAL) 37 switch (val) { 38 case 0x7915: 39 return CHECK_EEPROM_ERR(is_mt7915(&dev->mt76)); 40 case 0x7916: 41 return CHECK_EEPROM_ERR(is_mt7916(&dev->mt76)); 42 case 0x7981: 43 return CHECK_EEPROM_ERR(is_mt7981(&dev->mt76)); 44 case 0x7986: 45 return CHECK_EEPROM_ERR(is_mt7986(&dev->mt76)); 46 default: 47 return -EINVAL; 48 } 49 } 50 51 static char *mt7915_eeprom_name(struct mt7915_dev *dev) 52 { 53 switch (mt76_chip(&dev->mt76)) { 54 case 0x7915: 55 return dev->dbdc_support ? 56 MT7915_EEPROM_DEFAULT_DBDC : MT7915_EEPROM_DEFAULT; 57 case 0x7981: 58 /* mt7981 only supports mt7976 and only in DBDC mode */ 59 return MT7981_EEPROM_MT7976_DEFAULT_DBDC; 60 case 0x7986: 61 switch (mt7915_check_adie(dev, true)) { 62 case MT7976_ONE_ADIE_DBDC: 63 return MT7986_EEPROM_MT7976_DEFAULT_DBDC; 64 case MT7975_ONE_ADIE: 65 return MT7986_EEPROM_MT7975_DEFAULT; 66 case MT7976_ONE_ADIE: 67 return MT7986_EEPROM_MT7976_DEFAULT; 68 case MT7975_DUAL_ADIE: 69 return MT7986_EEPROM_MT7975_DUAL_DEFAULT; 70 case MT7976_DUAL_ADIE: 71 return MT7986_EEPROM_MT7976_DUAL_DEFAULT; 72 default: 73 break; 74 } 75 return NULL; 76 default: 77 return MT7916_EEPROM_DEFAULT; 78 } 79 } 80 81 static int 82 mt7915_eeprom_load_default(struct mt7915_dev *dev) 83 { 84 u8 *eeprom = dev->mt76.eeprom.data; 85 const struct firmware *fw = NULL; 86 int ret; 87 88 ret = request_firmware(&fw, mt7915_eeprom_name(dev), dev->mt76.dev); 89 if (ret) 90 return ret; 91 92 if (!fw || !fw->data) { 93 dev_err(dev->mt76.dev, "Invalid default bin\n"); 94 ret = -EINVAL; 95 goto out; 96 } 97 98 memcpy(eeprom, fw->data, mt7915_eeprom_size(dev)); 99 dev->flash_mode = true; 100 101 out: 102 release_firmware(fw); 103 104 return ret; 105 } 106 107 static int mt7915_eeprom_load(struct mt7915_dev *dev) 108 { 109 int ret; 110 u16 eeprom_size = mt7915_eeprom_size(dev); 111 112 ret = mt76_eeprom_init(&dev->mt76, eeprom_size); 113 if (ret < 0) 114 return ret; 115 116 if (ret) { 117 dev->flash_mode = true; 118 } else { 119 u8 free_block_num; 120 u32 block_num, i; 121 u32 eeprom_blk_size = MT7915_EEPROM_BLOCK_SIZE; 122 123 ret = mt7915_mcu_get_eeprom_free_block(dev, &free_block_num); 124 if (ret < 0) 125 return ret; 126 127 /* efuse info isn't enough */ 128 if (free_block_num >= 29) 129 return -EINVAL; 130 131 /* read eeprom data from efuse */ 132 block_num = DIV_ROUND_UP(eeprom_size, eeprom_blk_size); 133 for (i = 0; i < block_num; i++) { 134 ret = mt7915_mcu_get_eeprom(dev, i * eeprom_blk_size); 135 if (ret < 0) 136 return ret; 137 } 138 } 139 140 return mt7915_check_eeprom(dev); 141 } 142 143 static void mt7915_eeprom_parse_band_config(struct mt7915_phy *phy) 144 { 145 struct mt7915_dev *dev = phy->dev; 146 u8 *eeprom = dev->mt76.eeprom.data; 147 u8 band = phy->mt76->band_idx; 148 u32 val; 149 150 val = eeprom[MT_EE_WIFI_CONF + band]; 151 val = FIELD_GET(MT_EE_WIFI_CONF0_BAND_SEL, val); 152 153 if (!is_mt7915(&dev->mt76)) { 154 switch (val) { 155 case MT_EE_V2_BAND_SEL_5GHZ: 156 phy->mt76->cap.has_5ghz = true; 157 return; 158 case MT_EE_V2_BAND_SEL_6GHZ: 159 phy->mt76->cap.has_6ghz = true; 160 return; 161 case MT_EE_V2_BAND_SEL_5GHZ_6GHZ: 162 phy->mt76->cap.has_5ghz = true; 163 phy->mt76->cap.has_6ghz = true; 164 return; 165 default: 166 phy->mt76->cap.has_2ghz = true; 167 return; 168 } 169 } else if (val == MT_EE_BAND_SEL_DEFAULT && dev->dbdc_support) { 170 val = band ? MT_EE_BAND_SEL_5GHZ : MT_EE_BAND_SEL_2GHZ; 171 } 172 173 switch (val) { 174 case MT_EE_BAND_SEL_5GHZ: 175 phy->mt76->cap.has_5ghz = true; 176 break; 177 case MT_EE_BAND_SEL_2GHZ: 178 phy->mt76->cap.has_2ghz = true; 179 break; 180 default: 181 phy->mt76->cap.has_2ghz = true; 182 phy->mt76->cap.has_5ghz = true; 183 break; 184 } 185 } 186 187 void mt7915_eeprom_parse_hw_cap(struct mt7915_dev *dev, 188 struct mt7915_phy *phy) 189 { 190 u8 path, nss, nss_max = 4, *eeprom = dev->mt76.eeprom.data; 191 struct mt76_phy *mphy = phy->mt76; 192 u8 band = phy->mt76->band_idx; 193 194 mt7915_eeprom_parse_band_config(phy); 195 196 /* read tx/rx path from eeprom */ 197 if (is_mt7915(&dev->mt76)) { 198 path = FIELD_GET(MT_EE_WIFI_CONF0_TX_PATH, 199 eeprom[MT_EE_WIFI_CONF]); 200 } else { 201 path = FIELD_GET(MT_EE_WIFI_CONF0_TX_PATH, 202 eeprom[MT_EE_WIFI_CONF + band]); 203 } 204 205 if (!path || path > 4) 206 path = 4; 207 208 /* read tx/rx stream */ 209 nss = path; 210 if (dev->dbdc_support) { 211 if (is_mt7915(&dev->mt76)) { 212 path = min_t(u8, path, 2); 213 nss = FIELD_GET(MT_EE_WIFI_CONF3_TX_PATH_B0, 214 eeprom[MT_EE_WIFI_CONF + 3]); 215 if (band) 216 nss = FIELD_GET(MT_EE_WIFI_CONF3_TX_PATH_B1, 217 eeprom[MT_EE_WIFI_CONF + 3]); 218 } else { 219 nss = FIELD_GET(MT_EE_WIFI_CONF_STREAM_NUM, 220 eeprom[MT_EE_WIFI_CONF + 2 + band]); 221 } 222 223 if (!is_mt798x(&dev->mt76)) 224 nss_max = 2; 225 } 226 227 if (!nss) 228 nss = nss_max; 229 nss = min_t(u8, min_t(u8, nss_max, nss), path); 230 231 mphy->chainmask = BIT(path) - 1; 232 if (band) 233 mphy->chainmask <<= dev->chainshift; 234 mphy->antenna_mask = BIT(nss) - 1; 235 dev->chainmask |= mphy->chainmask; 236 dev->chainshift = hweight8(dev->mphy.chainmask); 237 } 238 239 int mt7915_eeprom_init(struct mt7915_dev *dev) 240 { 241 int ret; 242 243 ret = mt7915_eeprom_load(dev); 244 if (ret < 0) { 245 if (ret != -EINVAL) 246 return ret; 247 248 dev_warn(dev->mt76.dev, "eeprom load fail, use default bin\n"); 249 ret = mt7915_eeprom_load_default(dev); 250 if (ret) 251 return ret; 252 } 253 254 ret = mt7915_eeprom_load_precal(dev); 255 if (ret) 256 return ret; 257 258 mt7915_eeprom_parse_hw_cap(dev, &dev->phy); 259 memcpy(dev->mphy.macaddr, dev->mt76.eeprom.data + MT_EE_MAC_ADDR, 260 ETH_ALEN); 261 262 mt76_eeprom_override(&dev->mphy); 263 264 return 0; 265 } 266 267 int mt7915_eeprom_get_target_power(struct mt7915_dev *dev, 268 struct ieee80211_channel *chan, 269 u8 chain_idx) 270 { 271 u8 *eeprom = dev->mt76.eeprom.data; 272 int index, target_power; 273 bool tssi_on, is_7976; 274 275 if (chain_idx > 3) 276 return -EINVAL; 277 278 tssi_on = mt7915_tssi_enabled(dev, chan->band); 279 is_7976 = mt7915_check_adie(dev, false) || is_mt7916(&dev->mt76); 280 281 if (chan->band == NL80211_BAND_2GHZ) { 282 if (is_7976) { 283 index = MT_EE_TX0_POWER_2G_V2 + chain_idx; 284 target_power = eeprom[index]; 285 } else { 286 index = MT_EE_TX0_POWER_2G + chain_idx * 3; 287 target_power = eeprom[index]; 288 289 if (!tssi_on) 290 target_power += eeprom[index + 1]; 291 } 292 } else if (chan->band == NL80211_BAND_5GHZ) { 293 int group = mt7915_get_channel_group_5g(chan->hw_value, is_7976); 294 295 if (is_7976) { 296 index = MT_EE_TX0_POWER_5G_V2 + chain_idx * 5; 297 target_power = eeprom[index + group]; 298 } else { 299 index = MT_EE_TX0_POWER_5G + chain_idx * 12; 300 target_power = eeprom[index + group]; 301 302 if (!tssi_on) 303 target_power += eeprom[index + 8]; 304 } 305 } else { 306 int group = mt7915_get_channel_group_6g(chan->hw_value); 307 308 index = MT_EE_TX0_POWER_6G_V2 + chain_idx * 8; 309 target_power = is_7976 ? eeprom[index + group] : 0; 310 } 311 312 return target_power; 313 } 314 315 s8 mt7915_eeprom_get_power_delta(struct mt7915_dev *dev, int band) 316 { 317 u8 *eeprom = dev->mt76.eeprom.data; 318 u32 val, offs; 319 s8 delta; 320 bool is_7976 = mt7915_check_adie(dev, false) || is_mt7916(&dev->mt76); 321 322 if (band == NL80211_BAND_2GHZ) 323 offs = is_7976 ? MT_EE_RATE_DELTA_2G_V2 : MT_EE_RATE_DELTA_2G; 324 else if (band == NL80211_BAND_5GHZ) 325 offs = is_7976 ? MT_EE_RATE_DELTA_5G_V2 : MT_EE_RATE_DELTA_5G; 326 else 327 offs = is_7976 ? MT_EE_RATE_DELTA_6G_V2 : 0; 328 329 val = eeprom[offs]; 330 331 if (!offs || !(val & MT_EE_RATE_DELTA_EN)) 332 return 0; 333 334 delta = FIELD_GET(MT_EE_RATE_DELTA_MASK, val); 335 336 return val & MT_EE_RATE_DELTA_SIGN ? delta : -delta; 337 } 338 339 const u8 mt7915_sku_group_len[] = { 340 [SKU_CCK] = 4, 341 [SKU_OFDM] = 8, 342 [SKU_HT_BW20] = 8, 343 [SKU_HT_BW40] = 9, 344 [SKU_VHT_BW20] = 12, 345 [SKU_VHT_BW40] = 12, 346 [SKU_VHT_BW80] = 12, 347 [SKU_VHT_BW160] = 12, 348 [SKU_HE_RU26] = 12, 349 [SKU_HE_RU52] = 12, 350 [SKU_HE_RU106] = 12, 351 [SKU_HE_RU242] = 12, 352 [SKU_HE_RU484] = 12, 353 [SKU_HE_RU996] = 12, 354 [SKU_HE_RU2x996] = 12 355 }; 356