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 | int ret; |
15 | |
16 | if (!dev->flash_mode) |
17 | return 0; |
18 | |
19 | if (val != (MT_EE_WIFI_CAL_DPD | MT_EE_WIFI_CAL_GROUP)) |
20 | return 0; |
21 | |
22 | val = MT_EE_CAL_GROUP_SIZE + MT_EE_CAL_DPD_SIZE; |
23 | dev->cal = devm_kzalloc(dev: mdev->dev, size: val, GFP_KERNEL); |
24 | if (!dev->cal) |
25 | return -ENOMEM; |
26 | |
27 | offs = is_mt7915(dev: &dev->mt76) ? MT_EE_PRECAL : MT_EE_PRECAL_V2; |
28 | |
29 | ret = mt76_get_of_data_from_mtd(dev: mdev, eep: dev->cal, offset: offs, len: val); |
30 | if (!ret) |
31 | return ret; |
32 | |
33 | return mt76_get_of_data_from_nvmem(dev: mdev, eep: dev->cal, cell_name: "precal" , len: val); |
34 | } |
35 | |
36 | static int mt7915_check_eeprom(struct mt7915_dev *dev) |
37 | { |
38 | u8 *eeprom = dev->mt76.eeprom.data; |
39 | u16 val = get_unaligned_le16(p: eeprom); |
40 | |
41 | #define CHECK_EEPROM_ERR(match) (match ? 0 : -EINVAL) |
42 | switch (val) { |
43 | case 0x7915: |
44 | return CHECK_EEPROM_ERR(is_mt7915(&dev->mt76)); |
45 | case 0x7916: |
46 | return CHECK_EEPROM_ERR(is_mt7916(&dev->mt76)); |
47 | case 0x7981: |
48 | return CHECK_EEPROM_ERR(is_mt7981(&dev->mt76)); |
49 | case 0x7986: |
50 | return CHECK_EEPROM_ERR(is_mt7986(&dev->mt76)); |
51 | default: |
52 | return -EINVAL; |
53 | } |
54 | } |
55 | |
56 | static char *mt7915_eeprom_name(struct mt7915_dev *dev) |
57 | { |
58 | switch (mt76_chip(dev: &dev->mt76)) { |
59 | case 0x7915: |
60 | return dev->dbdc_support ? |
61 | MT7915_EEPROM_DEFAULT_DBDC : MT7915_EEPROM_DEFAULT; |
62 | case 0x7981: |
63 | /* mt7981 only supports mt7976 and only in DBDC mode */ |
64 | return MT7981_EEPROM_MT7976_DEFAULT_DBDC; |
65 | case 0x7986: |
66 | switch (mt7915_check_adie(dev, sku: true)) { |
67 | case MT7976_ONE_ADIE_DBDC: |
68 | return MT7986_EEPROM_MT7976_DEFAULT_DBDC; |
69 | case MT7975_ONE_ADIE: |
70 | return MT7986_EEPROM_MT7975_DEFAULT; |
71 | case MT7976_ONE_ADIE: |
72 | return MT7986_EEPROM_MT7976_DEFAULT; |
73 | case MT7975_DUAL_ADIE: |
74 | return MT7986_EEPROM_MT7975_DUAL_DEFAULT; |
75 | case MT7976_DUAL_ADIE: |
76 | return MT7986_EEPROM_MT7976_DUAL_DEFAULT; |
77 | default: |
78 | break; |
79 | } |
80 | return NULL; |
81 | default: |
82 | return MT7916_EEPROM_DEFAULT; |
83 | } |
84 | } |
85 | |
86 | static int |
87 | mt7915_eeprom_load_default(struct mt7915_dev *dev) |
88 | { |
89 | u8 *eeprom = dev->mt76.eeprom.data; |
90 | const struct firmware *fw = NULL; |
91 | int ret; |
92 | |
93 | ret = request_firmware(fw: &fw, name: mt7915_eeprom_name(dev), device: dev->mt76.dev); |
94 | if (ret) |
95 | return ret; |
96 | |
97 | if (!fw || !fw->data) { |
98 | dev_err(dev->mt76.dev, "Invalid default bin\n" ); |
99 | ret = -EINVAL; |
100 | goto out; |
101 | } |
102 | |
103 | memcpy(eeprom, fw->data, mt7915_eeprom_size(dev)); |
104 | dev->flash_mode = true; |
105 | |
106 | out: |
107 | release_firmware(fw); |
108 | |
109 | return ret; |
110 | } |
111 | |
112 | static int mt7915_eeprom_load(struct mt7915_dev *dev) |
113 | { |
114 | int ret; |
115 | u16 eeprom_size = mt7915_eeprom_size(dev); |
116 | |
117 | ret = mt76_eeprom_init(dev: &dev->mt76, len: eeprom_size); |
118 | if (ret < 0) |
119 | return ret; |
120 | |
121 | if (ret) { |
122 | dev->flash_mode = true; |
123 | } else { |
124 | u8 free_block_num; |
125 | u32 block_num, i; |
126 | u32 eeprom_blk_size = MT7915_EEPROM_BLOCK_SIZE; |
127 | |
128 | ret = mt7915_mcu_get_eeprom_free_block(dev, block_num: &free_block_num); |
129 | if (ret < 0) |
130 | return ret; |
131 | |
132 | /* efuse info isn't enough */ |
133 | if (free_block_num >= 29) |
134 | return -EINVAL; |
135 | |
136 | /* read eeprom data from efuse */ |
137 | block_num = DIV_ROUND_UP(eeprom_size, eeprom_blk_size); |
138 | for (i = 0; i < block_num; i++) { |
139 | ret = mt7915_mcu_get_eeprom(dev, offset: i * eeprom_blk_size); |
140 | if (ret < 0) |
141 | return ret; |
142 | } |
143 | } |
144 | |
145 | return mt7915_check_eeprom(dev); |
146 | } |
147 | |
148 | static void mt7915_eeprom_parse_band_config(struct mt7915_phy *phy) |
149 | { |
150 | struct mt7915_dev *dev = phy->dev; |
151 | u8 *eeprom = dev->mt76.eeprom.data; |
152 | u8 band = phy->mt76->band_idx; |
153 | u32 val; |
154 | |
155 | val = eeprom[MT_EE_WIFI_CONF + band]; |
156 | val = FIELD_GET(MT_EE_WIFI_CONF0_BAND_SEL, val); |
157 | |
158 | if (!is_mt7915(dev: &dev->mt76)) { |
159 | switch (val) { |
160 | case MT_EE_V2_BAND_SEL_5GHZ: |
161 | phy->mt76->cap.has_5ghz = true; |
162 | return; |
163 | case MT_EE_V2_BAND_SEL_6GHZ: |
164 | phy->mt76->cap.has_6ghz = true; |
165 | return; |
166 | case MT_EE_V2_BAND_SEL_5GHZ_6GHZ: |
167 | phy->mt76->cap.has_5ghz = true; |
168 | phy->mt76->cap.has_6ghz = true; |
169 | return; |
170 | default: |
171 | phy->mt76->cap.has_2ghz = true; |
172 | return; |
173 | } |
174 | } else if (val == MT_EE_BAND_SEL_DEFAULT && dev->dbdc_support) { |
175 | val = band ? MT_EE_BAND_SEL_5GHZ : MT_EE_BAND_SEL_2GHZ; |
176 | } |
177 | |
178 | switch (val) { |
179 | case MT_EE_BAND_SEL_5GHZ: |
180 | phy->mt76->cap.has_5ghz = true; |
181 | break; |
182 | case MT_EE_BAND_SEL_2GHZ: |
183 | phy->mt76->cap.has_2ghz = true; |
184 | break; |
185 | default: |
186 | phy->mt76->cap.has_2ghz = true; |
187 | phy->mt76->cap.has_5ghz = true; |
188 | break; |
189 | } |
190 | } |
191 | |
192 | void mt7915_eeprom_parse_hw_cap(struct mt7915_dev *dev, |
193 | struct mt7915_phy *phy) |
194 | { |
195 | u8 path, nss, nss_max = 4, *eeprom = dev->mt76.eeprom.data; |
196 | struct mt76_phy *mphy = phy->mt76; |
197 | u8 band = phy->mt76->band_idx; |
198 | |
199 | mt7915_eeprom_parse_band_config(phy); |
200 | |
201 | /* read tx/rx path from eeprom */ |
202 | if (is_mt7915(dev: &dev->mt76)) { |
203 | path = FIELD_GET(MT_EE_WIFI_CONF0_TX_PATH, |
204 | eeprom[MT_EE_WIFI_CONF]); |
205 | } else { |
206 | path = FIELD_GET(MT_EE_WIFI_CONF0_TX_PATH, |
207 | eeprom[MT_EE_WIFI_CONF + band]); |
208 | } |
209 | |
210 | if (!path || path > 4) |
211 | path = 4; |
212 | |
213 | /* read tx/rx stream */ |
214 | nss = path; |
215 | if (dev->dbdc_support) { |
216 | if (is_mt7915(dev: &dev->mt76)) { |
217 | path = min_t(u8, path, 2); |
218 | nss = FIELD_GET(MT_EE_WIFI_CONF3_TX_PATH_B0, |
219 | eeprom[MT_EE_WIFI_CONF + 3]); |
220 | if (band) |
221 | nss = FIELD_GET(MT_EE_WIFI_CONF3_TX_PATH_B1, |
222 | eeprom[MT_EE_WIFI_CONF + 3]); |
223 | } else { |
224 | nss = FIELD_GET(MT_EE_WIFI_CONF_STREAM_NUM, |
225 | eeprom[MT_EE_WIFI_CONF + 2 + band]); |
226 | } |
227 | |
228 | if (!is_mt798x(dev: &dev->mt76)) |
229 | nss_max = 2; |
230 | } |
231 | |
232 | if (!nss) |
233 | nss = nss_max; |
234 | nss = min_t(u8, min_t(u8, nss_max, nss), path); |
235 | |
236 | mphy->chainmask = BIT(path) - 1; |
237 | if (band) |
238 | mphy->chainmask <<= dev->chainshift; |
239 | mphy->antenna_mask = BIT(nss) - 1; |
240 | dev->chainmask |= mphy->chainmask; |
241 | dev->chainshift = hweight8(dev->mphy.chainmask); |
242 | } |
243 | |
244 | int mt7915_eeprom_init(struct mt7915_dev *dev) |
245 | { |
246 | int ret; |
247 | |
248 | ret = mt7915_eeprom_load(dev); |
249 | if (ret < 0) { |
250 | if (ret != -EINVAL) |
251 | return ret; |
252 | |
253 | dev_warn(dev->mt76.dev, "eeprom load fail, use default bin\n" ); |
254 | ret = mt7915_eeprom_load_default(dev); |
255 | if (ret) |
256 | return ret; |
257 | } |
258 | |
259 | ret = mt7915_eeprom_load_precal(dev); |
260 | if (ret) |
261 | return ret; |
262 | |
263 | mt7915_eeprom_parse_hw_cap(dev, phy: &dev->phy); |
264 | memcpy(dev->mphy.macaddr, dev->mt76.eeprom.data + MT_EE_MAC_ADDR, |
265 | ETH_ALEN); |
266 | |
267 | mt76_eeprom_override(phy: &dev->mphy); |
268 | |
269 | return 0; |
270 | } |
271 | |
272 | int mt7915_eeprom_get_target_power(struct mt7915_dev *dev, |
273 | struct ieee80211_channel *chan, |
274 | u8 chain_idx) |
275 | { |
276 | u8 *eeprom = dev->mt76.eeprom.data; |
277 | int index, target_power; |
278 | bool tssi_on, is_7976; |
279 | |
280 | if (chain_idx > 3) |
281 | return -EINVAL; |
282 | |
283 | tssi_on = mt7915_tssi_enabled(dev, band: chan->band); |
284 | is_7976 = mt7915_check_adie(dev, sku: false) || is_mt7916(dev: &dev->mt76); |
285 | |
286 | if (chan->band == NL80211_BAND_2GHZ) { |
287 | if (is_7976) { |
288 | index = MT_EE_TX0_POWER_2G_V2 + chain_idx; |
289 | target_power = eeprom[index]; |
290 | } else { |
291 | index = MT_EE_TX0_POWER_2G + chain_idx * 3; |
292 | target_power = eeprom[index]; |
293 | |
294 | if (!tssi_on) |
295 | target_power += eeprom[index + 1]; |
296 | } |
297 | } else if (chan->band == NL80211_BAND_5GHZ) { |
298 | int group = mt7915_get_channel_group_5g(channel: chan->hw_value, is_7976); |
299 | |
300 | if (is_7976) { |
301 | index = MT_EE_TX0_POWER_5G_V2 + chain_idx * 5; |
302 | target_power = eeprom[index + group]; |
303 | } else { |
304 | index = MT_EE_TX0_POWER_5G + chain_idx * 12; |
305 | target_power = eeprom[index + group]; |
306 | |
307 | if (!tssi_on) |
308 | target_power += eeprom[index + 8]; |
309 | } |
310 | } else { |
311 | int group = mt7915_get_channel_group_6g(channel: chan->hw_value); |
312 | |
313 | index = MT_EE_TX0_POWER_6G_V2 + chain_idx * 8; |
314 | target_power = is_7976 ? eeprom[index + group] : 0; |
315 | } |
316 | |
317 | return target_power; |
318 | } |
319 | |
320 | s8 mt7915_eeprom_get_power_delta(struct mt7915_dev *dev, int band) |
321 | { |
322 | u8 *eeprom = dev->mt76.eeprom.data; |
323 | u32 val, offs; |
324 | s8 delta; |
325 | bool is_7976 = mt7915_check_adie(dev, sku: false) || is_mt7916(dev: &dev->mt76); |
326 | |
327 | if (band == NL80211_BAND_2GHZ) |
328 | offs = is_7976 ? MT_EE_RATE_DELTA_2G_V2 : MT_EE_RATE_DELTA_2G; |
329 | else if (band == NL80211_BAND_5GHZ) |
330 | offs = is_7976 ? MT_EE_RATE_DELTA_5G_V2 : MT_EE_RATE_DELTA_5G; |
331 | else |
332 | offs = is_7976 ? MT_EE_RATE_DELTA_6G_V2 : 0; |
333 | |
334 | val = eeprom[offs]; |
335 | |
336 | if (!offs || !(val & MT_EE_RATE_DELTA_EN)) |
337 | return 0; |
338 | |
339 | delta = FIELD_GET(MT_EE_RATE_DELTA_MASK, val); |
340 | |
341 | return val & MT_EE_RATE_DELTA_SIGN ? delta : -delta; |
342 | } |
343 | |
344 | const u8 mt7915_sku_group_len[] = { |
345 | [SKU_CCK] = 4, |
346 | [SKU_OFDM] = 8, |
347 | [SKU_HT_BW20] = 8, |
348 | [SKU_HT_BW40] = 9, |
349 | [SKU_VHT_BW20] = 12, |
350 | [SKU_VHT_BW40] = 12, |
351 | [SKU_VHT_BW80] = 12, |
352 | [SKU_VHT_BW160] = 12, |
353 | [SKU_HE_RU26] = 12, |
354 | [SKU_HE_RU52] = 12, |
355 | [SKU_HE_RU106] = 12, |
356 | [SKU_HE_RU242] = 12, |
357 | [SKU_HE_RU484] = 12, |
358 | [SKU_HE_RU996] = 12, |
359 | [SKU_HE_RU2x996] = 12 |
360 | }; |
361 | |