From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 821A93EBF3C for ; Thu, 12 Feb 2026 09:05:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=210.61.82.184 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770887134; cv=none; b=cZqV0oBv4y6e8nSPjeHFdbI62gawdNzf4jKOggE2k8rLN19/VW3IEoQ4PQqOiu0ZTTEMZaiw96+vj0tjJgqZQZEve2aEbv7OMJB72+FRLDEyJsa3MOsi9sQ5xYBDqzLTxfVAqEyAZkiXWY3Y7XT4yJ+HhF5YrRnyHL0CrBc9HV0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770887134; c=relaxed/simple; bh=zQRMVprq+hhlPiiXPwHXJaLsq3/auCBMd8TtQ+zYueM=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=ZIvHeGoCoaL+d5jUXStLp5x4jVNUfvyxS/nJDz+bzTsxnU9XipeMVSPpUdLIj8eMUIA9/8HK+KVWH3lvq1/LJdm20iOwNFg6xw9j48TSC93m3q0xz8M5ZXvQGxPP/kw79yWK4m3jsnegeICU/W67ks564izJfvJEZYNTDrUPF0U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=mediatek.com; spf=pass smtp.mailfrom=mediatek.com; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b=JDkjxnHh; arc=none smtp.client-ip=210.61.82.184 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=mediatek.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=mediatek.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="JDkjxnHh" X-UUID: f7dbb63e07f111f1b7fc4fdb8733b2bc-20260212 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:Content-Transfer-Encoding:MIME-Version:Message-ID:Date:Subject:CC:To:From; bh=+lJekS6s5Ztn15eyMG3EZaQrgzdtK7QJJeUMGyzfKT8=; b=JDkjxnHhsDhmuD85aQbuUpayj3xa1KZFHzi9Ew0r5wQEvXgcrCeOikl3ZZ3EkOh7CJK3+HdFp97UTWaR/MjhmKaA2ZyU2rVl1NlF5+wdXoXpgbQqqq/X1qqIs5I9lDrjXPklaysEKMZZuBVoqTjt7EeVPFOIGsJt7xFyWASyJ+s=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.3.11,REQID:10aac92e-695a-40df-8a1d-bc1d31b9bdbe,IP:0,U RL:0,TC:0,Content:-25,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:-25 X-CID-META: VersionHash:89c9d04,CLOUDID:3b9b9ae9-ef90-4382-9c6f-55f2a0689a6b,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102|836|888|898,TC:-5,Content:0|15|5 0,EDM:-3,IP:nil,URL:0,File:130,RT:0,Bulk:nil,QS:nil,BEC:-1,COL:0,OSI:0,OSA :0,AV:0,LES:1,SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0,ARC:0 X-CID-BVR: 2,SSN|SDN X-CID-BAS: 2,SSN|SDN,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR X-CID-RHF: D41D8CD98F00B204E9800998ECF8427E X-UUID: f7dbb63e07f111f1b7fc4fdb8733b2bc-20260212 Received: from mtkmbs13n2.mediatek.inc [(172.21.101.108)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1338026612; Thu, 12 Feb 2026 17:05:25 +0800 Received: from mtkmbs13n2.mediatek.inc (172.21.101.108) by MTKMBS09N2.mediatek.inc (172.21.101.94) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.29; Thu, 12 Feb 2026 17:05:23 +0800 Received: from mtksitap99.mediatek.inc (10.233.130.16) by mtkmbs13n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.2562.29 via Frontend Transport; Thu, 12 Feb 2026 17:05:23 +0800 From: Shayne Chen To: Felix Fietkau CC: linux-wireless , Lorenzo Bianconi , Ryder Lee , Evelyn Tsai , Money Wang , linux-mediatek , StanleyYP Wang , Elwin Huang , Shayne Chen Subject: [PATCH mt76 1/3] wifi: mt76: add external EEPROM support for mt799x chipsets Date: Thu, 12 Feb 2026 17:03:08 +0800 Message-ID: <20260212090310.3335392-1-shayne.chen@mediatek.com> X-Mailer: git-send-email 2.45.2 Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-MTK: N From: StanleyYP Wang For the MT7992 and MT7990 chipsets, efuse mode is not supported because there is insufficient space in the efuse to store the calibration data. Therefore, an additional on-chip EEPROM is added to address this limitation. Co-developed-by: Elwin Huang Signed-off-by: Elwin Huang Co-developed-by: Shayne Chen Signed-off-by: Shayne Chen Signed-off-by: StanleyYP Wang --- .../wireless/mediatek/mt76/mt76_connac_mcu.h | 1 + .../wireless/mediatek/mt76/mt7996/eeprom.c | 59 +++++++------ .../net/wireless/mediatek/mt76/mt7996/init.c | 3 +- .../net/wireless/mediatek/mt76/mt7996/mcu.c | 83 ++++++++++++------- .../net/wireless/mediatek/mt76/mt7996/mcu.h | 43 +++++++++- .../wireless/mediatek/mt76/mt7996/mt7996.h | 20 ++++- 6 files changed, 148 insertions(+), 61 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h index f44977f9093d..e91966cd5efe 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h +++ b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h @@ -1308,6 +1308,7 @@ enum { MCU_UNI_CMD_PER_STA_INFO = 0x6d, MCU_UNI_CMD_ALL_STA_INFO = 0x6e, MCU_UNI_CMD_ASSERT_DUMP = 0x6f, + MCU_UNI_CMD_EXT_EEPROM_CTRL = 0x74, MCU_UNI_CMD_RADIO_STATUS = 0x80, MCU_UNI_CMD_SDO = 0x88, }; diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/eeprom.c b/drivers/net/wireless/mediatek/mt76/mt7996/eeprom.c index 8f60772913b4..00c72be8498f 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/eeprom.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/eeprom.c @@ -153,7 +153,7 @@ mt7996_eeprom_check_or_use_default(struct mt7996_dev *dev, bool use_default) dev_warn(dev->mt76.dev, "eeprom load fail, use default bin\n"); memcpy(eeprom, fw->data, MT7996_EEPROM_SIZE); - dev->flash_mode = true; + dev->eeprom_mode = EEPROM_MODE_DEFAULT_BIN; out: release_firmware(fw); @@ -163,26 +163,31 @@ mt7996_eeprom_check_or_use_default(struct mt7996_dev *dev, bool use_default) static int mt7996_eeprom_load(struct mt7996_dev *dev) { + u32 eeprom_blk_size, block_num; bool use_default = false; - int ret; + int ret, i; ret = mt76_eeprom_init(&dev->mt76, MT7996_EEPROM_SIZE); if (ret < 0) return ret; if (ret && !mt7996_check_eeprom(dev)) { - dev->flash_mode = true; + dev->eeprom_mode = EEPROM_MODE_FLASH; goto out; } - if (!dev->flash_mode) { - u32 eeprom_blk_size = MT7996_EEPROM_BLOCK_SIZE; - u32 block_num = DIV_ROUND_UP(MT7996_EEPROM_SIZE, eeprom_blk_size); + memset(dev->mt76.eeprom.data, 0, MT7996_EEPROM_SIZE); + if (mt7996_has_ext_eeprom(dev)) { + /* external eeprom mode */ + dev->eeprom_mode = EEPROM_MODE_EXT; + eeprom_blk_size = MT7996_EXT_EEPROM_BLOCK_SIZE; + } else { u8 free_block_num; - int i; - memset(dev->mt76.eeprom.data, 0, MT7996_EEPROM_SIZE); - ret = mt7996_mcu_get_eeprom_free_block(dev, &free_block_num); + /* efuse mode */ + dev->eeprom_mode = EEPROM_MODE_EFUSE; + eeprom_blk_size = MT7996_EEPROM_BLOCK_SIZE; + ret = mt7996_mcu_get_efuse_free_block(dev, &free_block_num); if (ret < 0) return ret; @@ -191,27 +196,29 @@ static int mt7996_eeprom_load(struct mt7996_dev *dev) use_default = true; goto out; } + } + + /* check if eeprom data from fw is valid */ + if (mt7996_mcu_get_eeprom(dev, 0, NULL, eeprom_blk_size, + dev->eeprom_mode) || + mt7996_check_eeprom(dev)) { + use_default = true; + goto out; + } + + /* read eeprom data from fw */ + block_num = DIV_ROUND_UP(MT7996_EEPROM_SIZE, eeprom_blk_size); + for (i = 1; i < block_num; i++) { + u32 len = eeprom_blk_size; - /* check if eeprom data from fw is valid */ - if (mt7996_mcu_get_eeprom(dev, 0, NULL, 0) || - mt7996_check_eeprom(dev)) { + if (i == block_num - 1) + len = MT7996_EEPROM_SIZE % eeprom_blk_size; + ret = mt7996_mcu_get_eeprom(dev, i * eeprom_blk_size, + NULL, len, dev->eeprom_mode); + if (ret && ret != -EINVAL) { use_default = true; goto out; } - - /* read eeprom data from fw */ - for (i = 1; i < block_num; i++) { - u32 len = eeprom_blk_size; - - if (i == block_num - 1) - len = MT7996_EEPROM_SIZE % eeprom_blk_size; - ret = mt7996_mcu_get_eeprom(dev, i * eeprom_blk_size, - NULL, len); - if (ret && ret != -EINVAL) { - use_default = true; - goto out; - } - } } out: diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/init.c b/drivers/net/wireless/mediatek/mt76/mt7996/init.c index 2937e89ad0c9..1fab04909831 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/init.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/init.c @@ -1207,7 +1207,8 @@ static int mt7996_variant_fem_init(struct mt7996_dev *dev) if (ret) return ret; - ret = mt7996_mcu_get_eeprom(dev, MT7976C_EFUSE_OFFSET, buf, sizeof(buf)); + ret = mt7996_mcu_get_eeprom(dev, MT7976C_EFUSE_OFFSET, buf, sizeof(buf), + EEPROM_MODE_EFUSE); if (ret && ret != -EINVAL) return ret; diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c index 9ccf9f97c984..46099486ec09 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c @@ -3950,7 +3950,7 @@ static int mt7996_mcu_set_eeprom_flash(struct mt7996_dev *dev) #define MAX_PAGE_IDX_MASK GENMASK(7, 5) #define PAGE_IDX_MASK GENMASK(4, 2) #define PER_PAGE_SIZE 0x400 - struct mt7996_mcu_eeprom req = { + struct mt7996_mcu_eeprom_update req = { .tag = cpu_to_le16(UNI_EFUSE_BUFFER_MODE), .buffer_mode = EE_MODE_BUFFER }; @@ -3992,57 +3992,80 @@ static int mt7996_mcu_set_eeprom_flash(struct mt7996_dev *dev) int mt7996_mcu_set_eeprom(struct mt7996_dev *dev) { - struct mt7996_mcu_eeprom req = { + struct mt7996_mcu_eeprom_update req = { .tag = cpu_to_le16(UNI_EFUSE_BUFFER_MODE), .len = cpu_to_le16(sizeof(req) - 4), .buffer_mode = EE_MODE_EFUSE, .format = EE_FORMAT_WHOLE }; - if (dev->flash_mode) + if (dev->eeprom_mode != EEPROM_MODE_EFUSE) return mt7996_mcu_set_eeprom_flash(dev); return mt76_mcu_send_msg(&dev->mt76, MCU_WM_UNI_CMD(EFUSE_CTRL), &req, sizeof(req), true); } -int mt7996_mcu_get_eeprom(struct mt7996_dev *dev, u32 offset, u8 *buf, u32 buf_len) +int mt7996_mcu_get_eeprom(struct mt7996_dev *dev, u32 offset, u8 *buf, u32 buf_len, + enum mt7996_eeprom_mode mode) { - struct { - u8 _rsv[4]; - - __le16 tag; - __le16 len; - __le32 addr; - __le32 valid; - u8 data[16]; - } __packed req = { - .tag = cpu_to_le16(UNI_EFUSE_ACCESS), - .len = cpu_to_le16(sizeof(req) - 4), - .addr = cpu_to_le32(round_down(offset, - MT7996_EEPROM_BLOCK_SIZE)), + struct mt7996_mcu_eeprom_access req = { + .info.len = cpu_to_le16(sizeof(req) - 4), }; + struct mt7996_mcu_eeprom_access_event *event; struct sk_buff *skb; - bool valid; - int ret; + int ret, cmd; + u32 addr; + + switch (mode) { + case EEPROM_MODE_EFUSE: + addr = round_down(offset, MT7996_EEPROM_BLOCK_SIZE); + cmd = MCU_WM_UNI_CMD_QUERY(EFUSE_CTRL); + req.info.tag = cpu_to_le16(UNI_EFUSE_ACCESS); + break; + case EEPROM_MODE_EXT: + addr = round_down(offset, MT7996_EXT_EEPROM_BLOCK_SIZE); + cmd = MCU_WM_UNI_CMD_QUERY(EXT_EEPROM_CTRL); + req.info.tag = cpu_to_le16(UNI_EXT_EEPROM_ACCESS); + req.eeprom.ext_eeprom.data_len = cpu_to_le32(buf_len); + break; + default: + return -EINVAL; + } - ret = mt76_mcu_send_and_get_msg(&dev->mt76, - MCU_WM_UNI_CMD_QUERY(EFUSE_CTRL), - &req, sizeof(req), true, &skb); + req.info.addr = cpu_to_le32(addr); + ret = mt76_mcu_send_and_get_msg(&dev->mt76, cmd, &req, sizeof(req), + true, &skb); if (ret) return ret; - valid = le32_to_cpu(*(__le32 *)(skb->data + 16)); - if (valid) { - u32 addr = le32_to_cpu(*(__le32 *)(skb->data + 12)); + event = (struct mt7996_mcu_eeprom_access_event *)skb->data; + if (event->valid) { + u32 ret_len = le32_to_cpu(event->eeprom.ext_eeprom.data_len); + + addr = le32_to_cpu(event->addr); if (!buf) buf = (u8 *)dev->mt76.eeprom.data + addr; - if (!buf_len || buf_len > MT7996_EEPROM_BLOCK_SIZE) - buf_len = MT7996_EEPROM_BLOCK_SIZE; - skb_pull(skb, 48); - memcpy(buf, skb->data, buf_len); + switch (mode) { + case EEPROM_MODE_EFUSE: + if (!buf_len || buf_len > MT7996_EEPROM_BLOCK_SIZE) + buf_len = MT7996_EEPROM_BLOCK_SIZE; + + memcpy(buf, event->eeprom.efuse, buf_len); + break; + case EEPROM_MODE_EXT: + if (!buf_len || buf_len > MT7996_EXT_EEPROM_BLOCK_SIZE) + buf_len = MT7996_EXT_EEPROM_BLOCK_SIZE; + + memcpy(buf, event->eeprom.ext_eeprom.data, + ret_len < buf_len ? ret_len : buf_len); + break; + default: + ret = -EINVAL; + break; + } } else { ret = -EINVAL; } @@ -4052,7 +4075,7 @@ int mt7996_mcu_get_eeprom(struct mt7996_dev *dev, u32 offset, u8 *buf, u32 buf_l return ret; } -int mt7996_mcu_get_eeprom_free_block(struct mt7996_dev *dev, u8 *block_num) +int mt7996_mcu_get_efuse_free_block(struct mt7996_dev *dev, u8 *block_num) { struct { u8 _rsv[4]; diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.h b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.h index d70540982983..39df13679779 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.h +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.h @@ -145,7 +145,7 @@ struct mt7996_mcu_background_chain_ctrl { u8 rsv[2]; } __packed; -struct mt7996_mcu_eeprom { +struct mt7996_mcu_eeprom_update { u8 _rsv[4]; __le16 tag; @@ -155,6 +155,43 @@ struct mt7996_mcu_eeprom { __le16 buf_len; } __packed; +union eeprom_data { + struct { + __le32 data_len; + DECLARE_FLEX_ARRAY(u8, data); + } ext_eeprom; + DECLARE_FLEX_ARRAY(u8, efuse); +} __packed; + +struct mt7996_mcu_eeprom_info { + u8 _rsv[4]; + + __le16 tag; + __le16 len; + __le32 addr; + __le32 valid; +} __packed; + +struct mt7996_mcu_eeprom_access { + struct mt7996_mcu_eeprom_info info; + union eeprom_data eeprom; +} __packed; + +struct mt7996_mcu_eeprom_access_event { + u8 _rsv[4]; + + __le16 tag; + __le16 len; + __le32 version; + __le32 addr; + __le32 valid; + __le32 size; + __le32 magic_no; + __le32 type; + __le32 rsv[4]; + union eeprom_data eeprom; +} __packed; + struct mt7996_mcu_phy_rx_info { u8 category; u8 rate; @@ -875,6 +912,10 @@ enum { UNI_EFUSE_BUFFER_RD, }; +enum { + UNI_EXT_EEPROM_ACCESS = 1, +}; + enum { UNI_VOW_DRR_CTRL, UNI_VOW_RX_AT_AIRTIME_EN = 0x0b, diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h b/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h index 3ff730e36fa6..ea1f656a9334 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h @@ -85,6 +85,7 @@ #define MT7996_EEPROM_SIZE 7680 #define MT7996_EEPROM_BLOCK_SIZE 16 +#define MT7996_EXT_EEPROM_BLOCK_SIZE 1024 #define MT7996_TOKEN_SIZE 16384 #define MT7996_HW_TOKEN_SIZE 8192 @@ -169,6 +170,13 @@ enum mt7996_fem_type { MT7996_FEM_MIX, }; +enum mt7996_eeprom_mode { + EEPROM_MODE_DEFAULT_BIN, + EEPROM_MODE_EFUSE, + EEPROM_MODE_FLASH, + EEPROM_MODE_EXT, +}; + enum mt7996_txq_id { MT7996_TXQ_FWDL = 16, MT7996_TXQ_MCU_WM, @@ -441,7 +449,7 @@ struct mt7996_dev { u32 hw_pattern; - bool flash_mode:1; + u8 eeprom_mode; bool has_eht:1; struct { @@ -717,8 +725,9 @@ int mt7996_mcu_set_fixed_rate_ctrl(struct mt7996_dev *dev, int mt7996_mcu_set_fixed_field(struct mt7996_dev *dev, struct mt7996_sta *msta, void *data, u8 link_id, u32 field); int mt7996_mcu_set_eeprom(struct mt7996_dev *dev); -int mt7996_mcu_get_eeprom(struct mt7996_dev *dev, u32 offset, u8 *buf, u32 buf_len); -int mt7996_mcu_get_eeprom_free_block(struct mt7996_dev *dev, u8 *block_num); +int mt7996_mcu_get_eeprom(struct mt7996_dev *dev, u32 offset, u8 *buf, u32 buf_len, + enum mt7996_eeprom_mode mode); +int mt7996_mcu_get_efuse_free_block(struct mt7996_dev *dev, u8 *block_num); int mt7996_mcu_get_chip_config(struct mt7996_dev *dev, u32 *cap); int mt7996_mcu_set_ser(struct mt7996_dev *dev, u8 action, u8 set, u8 band); int mt7996_mcu_set_txbf(struct mt7996_dev *dev, u8 action); @@ -816,6 +825,11 @@ static inline bool mt7996_has_wa(struct mt7996_dev *dev) return !is_mt7990(&dev->mt76); } +static inline bool mt7996_has_ext_eeprom(struct mt7996_dev *dev) +{ + return !is_mt7996(&dev->mt76); +} + void mt7996_mac_init(struct mt7996_dev *dev); u32 mt7996_mac_wtbl_lmac_addr(struct mt7996_dev *dev, u16 wcid, u8 dw); bool mt7996_mac_wtbl_update(struct mt7996_dev *dev, int idx, u32 mask); -- 2.51.0