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