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linux-zen-server/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c

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// SPDX-License-Identifier: ISC
/* Copyright (C) 2020 MediaTek Inc. */
#include <linux/firmware.h>
#include "mt7915.h"
#include "eeprom.h"
static int mt7915_eeprom_load_precal(struct mt7915_dev *dev)
{
struct mt76_dev *mdev = &dev->mt76;
u8 *eeprom = mdev->eeprom.data;
u32 val = eeprom[MT_EE_DO_PRE_CAL];
u32 offs;
if (!dev->flash_mode)
return 0;
if (val != (MT_EE_WIFI_CAL_DPD | MT_EE_WIFI_CAL_GROUP))
return 0;
val = MT_EE_CAL_GROUP_SIZE + MT_EE_CAL_DPD_SIZE;
dev->cal = devm_kzalloc(mdev->dev, val, GFP_KERNEL);
if (!dev->cal)
return -ENOMEM;
offs = is_mt7915(&dev->mt76) ? MT_EE_PRECAL : MT_EE_PRECAL_V2;
return mt76_get_of_eeprom(mdev, dev->cal, offs, val);
}
static int mt7915_check_eeprom(struct mt7915_dev *dev)
{
u8 *eeprom = dev->mt76.eeprom.data;
u16 val = get_unaligned_le16(eeprom);
#define CHECK_EEPROM_ERR(match) (match ? 0 : -EINVAL)
switch (val) {
case 0x7915:
return CHECK_EEPROM_ERR(is_mt7915(&dev->mt76));
case 0x7916:
return CHECK_EEPROM_ERR(is_mt7916(&dev->mt76));
case 0x7986:
return CHECK_EEPROM_ERR(is_mt7986(&dev->mt76));
default:
return -EINVAL;
}
}
static char *mt7915_eeprom_name(struct mt7915_dev *dev)
{
switch (mt76_chip(&dev->mt76)) {
case 0x7915:
return dev->dbdc_support ?
MT7915_EEPROM_DEFAULT_DBDC : MT7915_EEPROM_DEFAULT;
case 0x7986:
switch (mt7915_check_adie(dev, true)) {
case MT7976_ONE_ADIE_DBDC:
return MT7986_EEPROM_MT7976_DEFAULT_DBDC;
case MT7975_ONE_ADIE:
return MT7986_EEPROM_MT7975_DEFAULT;
case MT7976_ONE_ADIE:
return MT7986_EEPROM_MT7976_DEFAULT;
case MT7975_DUAL_ADIE:
return MT7986_EEPROM_MT7975_DUAL_DEFAULT;
case MT7976_DUAL_ADIE:
return MT7986_EEPROM_MT7976_DUAL_DEFAULT;
default:
break;
}
return NULL;
default:
return MT7916_EEPROM_DEFAULT;
}
}
static int
mt7915_eeprom_load_default(struct mt7915_dev *dev)
{
u8 *eeprom = dev->mt76.eeprom.data;
const struct firmware *fw = NULL;
int ret;
ret = request_firmware(&fw, mt7915_eeprom_name(dev), dev->mt76.dev);
if (ret)
return ret;
if (!fw || !fw->data) {
dev_err(dev->mt76.dev, "Invalid default bin\n");
ret = -EINVAL;
goto out;
}
memcpy(eeprom, fw->data, mt7915_eeprom_size(dev));
dev->flash_mode = true;
out:
release_firmware(fw);
return ret;
}
static int mt7915_eeprom_load(struct mt7915_dev *dev)
{
int ret;
u16 eeprom_size = mt7915_eeprom_size(dev);
ret = mt76_eeprom_init(&dev->mt76, eeprom_size);
if (ret < 0)
return ret;
if (ret) {
dev->flash_mode = true;
} else {
u8 free_block_num;
u32 block_num, i;
u32 eeprom_blk_size = MT7915_EEPROM_BLOCK_SIZE;
ret = mt7915_mcu_get_eeprom_free_block(dev, &free_block_num);
if (ret < 0)
return ret;
/* efuse info isn't enough */
if (free_block_num >= 29)
return -EINVAL;
/* read eeprom data from efuse */
block_num = DIV_ROUND_UP(eeprom_size, eeprom_blk_size);
for (i = 0; i < block_num; i++) {
ret = mt7915_mcu_get_eeprom(dev, i * eeprom_blk_size);
if (ret < 0)
return ret;
}
}
return mt7915_check_eeprom(dev);
}
static void mt7915_eeprom_parse_band_config(struct mt7915_phy *phy)
{
struct mt7915_dev *dev = phy->dev;
u8 *eeprom = dev->mt76.eeprom.data;
u8 band = phy->mt76->band_idx;
u32 val;
val = eeprom[MT_EE_WIFI_CONF + band];
val = FIELD_GET(MT_EE_WIFI_CONF0_BAND_SEL, val);
if (!is_mt7915(&dev->mt76)) {
switch (val) {
case MT_EE_V2_BAND_SEL_5GHZ:
phy->mt76->cap.has_5ghz = true;
return;
case MT_EE_V2_BAND_SEL_6GHZ:
phy->mt76->cap.has_6ghz = true;
return;
case MT_EE_V2_BAND_SEL_5GHZ_6GHZ:
phy->mt76->cap.has_5ghz = true;
phy->mt76->cap.has_6ghz = true;
return;
default:
phy->mt76->cap.has_2ghz = true;
return;
}
} else if (val == MT_EE_BAND_SEL_DEFAULT && dev->dbdc_support) {
val = band ? MT_EE_BAND_SEL_5GHZ : MT_EE_BAND_SEL_2GHZ;
}
switch (val) {
case MT_EE_BAND_SEL_5GHZ:
phy->mt76->cap.has_5ghz = true;
break;
case MT_EE_BAND_SEL_2GHZ:
phy->mt76->cap.has_2ghz = true;
break;
default:
phy->mt76->cap.has_2ghz = true;
phy->mt76->cap.has_5ghz = true;
break;
}
}
void mt7915_eeprom_parse_hw_cap(struct mt7915_dev *dev,
struct mt7915_phy *phy)
{
u8 path, nss, nss_max = 4, *eeprom = dev->mt76.eeprom.data;
struct mt76_phy *mphy = phy->mt76;
u8 band = phy->mt76->band_idx;
mt7915_eeprom_parse_band_config(phy);
/* read tx/rx path from eeprom */
if (is_mt7915(&dev->mt76)) {
path = FIELD_GET(MT_EE_WIFI_CONF0_TX_PATH,
eeprom[MT_EE_WIFI_CONF]);
} else {
path = FIELD_GET(MT_EE_WIFI_CONF0_TX_PATH,
eeprom[MT_EE_WIFI_CONF + band]);
}
if (!path || path > 4)
path = 4;
/* read tx/rx stream */
nss = path;
if (dev->dbdc_support) {
if (is_mt7915(&dev->mt76)) {
path = min_t(u8, path, 2);
nss = FIELD_GET(MT_EE_WIFI_CONF3_TX_PATH_B0,
eeprom[MT_EE_WIFI_CONF + 3]);
if (band)
nss = FIELD_GET(MT_EE_WIFI_CONF3_TX_PATH_B1,
eeprom[MT_EE_WIFI_CONF + 3]);
} else {
nss = FIELD_GET(MT_EE_WIFI_CONF_STREAM_NUM,
eeprom[MT_EE_WIFI_CONF + 2 + band]);
}
if (!is_mt7986(&dev->mt76))
nss_max = 2;
}
if (!nss)
nss = nss_max;
nss = min_t(u8, min_t(u8, nss_max, nss), path);
mphy->chainmask = BIT(path) - 1;
if (band)
mphy->chainmask <<= dev->chainshift;
mphy->antenna_mask = BIT(nss) - 1;
dev->chainmask |= mphy->chainmask;
dev->chainshift = hweight8(dev->mphy.chainmask);
}
int mt7915_eeprom_init(struct mt7915_dev *dev)
{
int ret;
ret = mt7915_eeprom_load(dev);
if (ret < 0) {
if (ret != -EINVAL)
return ret;
dev_warn(dev->mt76.dev, "eeprom load fail, use default bin\n");
ret = mt7915_eeprom_load_default(dev);
if (ret)
return ret;
}
ret = mt7915_eeprom_load_precal(dev);
if (ret)
return ret;
mt7915_eeprom_parse_hw_cap(dev, &dev->phy);
memcpy(dev->mphy.macaddr, dev->mt76.eeprom.data + MT_EE_MAC_ADDR,
ETH_ALEN);
mt76_eeprom_override(&dev->mphy);
return 0;
}
int mt7915_eeprom_get_target_power(struct mt7915_dev *dev,
struct ieee80211_channel *chan,
u8 chain_idx)
{
u8 *eeprom = dev->mt76.eeprom.data;
int index, target_power;
bool tssi_on, is_7976;
if (chain_idx > 3)
return -EINVAL;
tssi_on = mt7915_tssi_enabled(dev, chan->band);
is_7976 = mt7915_check_adie(dev, false) || is_mt7916(&dev->mt76);
if (chan->band == NL80211_BAND_2GHZ) {
if (is_7976) {
index = MT_EE_TX0_POWER_2G_V2 + chain_idx;
target_power = eeprom[index];
} else {
index = MT_EE_TX0_POWER_2G + chain_idx * 3;
target_power = eeprom[index];
if (!tssi_on)
target_power += eeprom[index + 1];
}
} else if (chan->band == NL80211_BAND_5GHZ) {
int group = mt7915_get_channel_group_5g(chan->hw_value, is_7976);
if (is_7976) {
index = MT_EE_TX0_POWER_5G_V2 + chain_idx * 5;
target_power = eeprom[index + group];
} else {
index = MT_EE_TX0_POWER_5G + chain_idx * 12;
target_power = eeprom[index + group];
if (!tssi_on)
target_power += eeprom[index + 8];
}
} else {
int group = mt7915_get_channel_group_6g(chan->hw_value);
index = MT_EE_TX0_POWER_6G_V2 + chain_idx * 8;
target_power = is_7976 ? eeprom[index + group] : 0;
}
return target_power;
}
s8 mt7915_eeprom_get_power_delta(struct mt7915_dev *dev, int band)
{
u8 *eeprom = dev->mt76.eeprom.data;
u32 val, offs;
s8 delta;
bool is_7976 = mt7915_check_adie(dev, false) || is_mt7916(&dev->mt76);
if (band == NL80211_BAND_2GHZ)
offs = is_7976 ? MT_EE_RATE_DELTA_2G_V2 : MT_EE_RATE_DELTA_2G;
else if (band == NL80211_BAND_5GHZ)
offs = is_7976 ? MT_EE_RATE_DELTA_5G_V2 : MT_EE_RATE_DELTA_5G;
else
offs = is_7976 ? MT_EE_RATE_DELTA_6G_V2 : 0;
val = eeprom[offs];
if (!offs || !(val & MT_EE_RATE_DELTA_EN))
return 0;
delta = FIELD_GET(MT_EE_RATE_DELTA_MASK, val);
return val & MT_EE_RATE_DELTA_SIGN ? delta : -delta;
}
const u8 mt7915_sku_group_len[] = {
[SKU_CCK] = 4,
[SKU_OFDM] = 8,
[SKU_HT_BW20] = 8,
[SKU_HT_BW40] = 9,
[SKU_VHT_BW20] = 12,
[SKU_VHT_BW40] = 12,
[SKU_VHT_BW80] = 12,
[SKU_VHT_BW160] = 12,
[SKU_HE_RU26] = 12,
[SKU_HE_RU52] = 12,
[SKU_HE_RU106] = 12,
[SKU_HE_RU242] = 12,
[SKU_HE_RU484] = 12,
[SKU_HE_RU996] = 12,
[SKU_HE_RU2x996] = 12
};
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