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mcu.c
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mcu.c
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// SPDX-License-Identifier: ISC
/* Copyright (C) 2020 MediaTek Inc. */
#include <linux/firmware.h>
#include <linux/fs.h>
#include "mt7921.h"
#include "mcu.h"
#include "mac.h"
struct mt7921_patch_hdr {
char build_date[16];
char platform[4];
__be32 hw_sw_ver;
__be32 patch_ver;
__be16 checksum;
u16 reserved;
struct {
__be32 patch_ver;
__be32 subsys;
__be32 feature;
__be32 n_region;
__be32 crc;
u32 reserved[11];
} desc;
} __packed;
struct mt7921_patch_sec {
__be32 type;
__be32 offs;
__be32 size;
union {
__be32 spec[13];
struct {
__be32 addr;
__be32 len;
__be32 sec_key_idx;
__be32 align_len;
u32 reserved[9];
} info;
};
} __packed;
struct mt7921_fw_trailer {
u8 chip_id;
u8 eco_code;
u8 n_region;
u8 format_ver;
u8 format_flag;
u8 reserved[2];
char fw_ver[10];
char build_date[15];
u32 crc;
} __packed;
struct mt7921_fw_region {
__le32 decomp_crc;
__le32 decomp_len;
__le32 decomp_blk_sz;
u8 reserved[4];
__le32 addr;
__le32 len;
u8 feature_set;
u8 reserved1[15];
} __packed;
#define MT_STA_BFER BIT(0)
#define MT_STA_BFEE BIT(1)
#define FW_FEATURE_SET_ENCRYPT BIT(0)
#define FW_FEATURE_SET_KEY_IDX GENMASK(2, 1)
#define FW_FEATURE_ENCRY_MODE BIT(4)
#define FW_FEATURE_OVERRIDE_ADDR BIT(5)
#define DL_MODE_ENCRYPT BIT(0)
#define DL_MODE_KEY_IDX GENMASK(2, 1)
#define DL_MODE_RESET_SEC_IV BIT(3)
#define DL_MODE_WORKING_PDA_CR4 BIT(4)
#define DL_CONFIG_ENCRY_MODE_SEL BIT(6)
#define DL_MODE_NEED_RSP BIT(31)
#define FW_START_OVERRIDE BIT(0)
#define FW_START_WORKING_PDA_CR4 BIT(2)
#define PATCH_SEC_TYPE_MASK GENMASK(15, 0)
#define PATCH_SEC_TYPE_INFO 0x2
#define to_wcid_lo(id) FIELD_GET(GENMASK(7, 0), (u16)id)
#define to_wcid_hi(id) FIELD_GET(GENMASK(9, 8), (u16)id)
static enum mt7921_cipher_type
mt7921_mcu_get_cipher(int cipher)
{
switch (cipher) {
case WLAN_CIPHER_SUITE_WEP40:
return MT_CIPHER_WEP40;
case WLAN_CIPHER_SUITE_WEP104:
return MT_CIPHER_WEP104;
case WLAN_CIPHER_SUITE_TKIP:
return MT_CIPHER_TKIP;
case WLAN_CIPHER_SUITE_AES_CMAC:
return MT_CIPHER_BIP_CMAC_128;
case WLAN_CIPHER_SUITE_CCMP:
return MT_CIPHER_AES_CCMP;
case WLAN_CIPHER_SUITE_CCMP_256:
return MT_CIPHER_CCMP_256;
case WLAN_CIPHER_SUITE_GCMP:
return MT_CIPHER_GCMP;
case WLAN_CIPHER_SUITE_GCMP_256:
return MT_CIPHER_GCMP_256;
case WLAN_CIPHER_SUITE_SMS4:
return MT_CIPHER_WAPI;
default:
return MT_CIPHER_NONE;
}
}
static u8 mt7921_mcu_chan_bw(struct cfg80211_chan_def *chandef)
{
static const u8 width_to_bw[] = {
[NL80211_CHAN_WIDTH_40] = CMD_CBW_40MHZ,
[NL80211_CHAN_WIDTH_80] = CMD_CBW_80MHZ,
[NL80211_CHAN_WIDTH_80P80] = CMD_CBW_8080MHZ,
[NL80211_CHAN_WIDTH_160] = CMD_CBW_160MHZ,
[NL80211_CHAN_WIDTH_5] = CMD_CBW_5MHZ,
[NL80211_CHAN_WIDTH_10] = CMD_CBW_10MHZ,
[NL80211_CHAN_WIDTH_20] = CMD_CBW_20MHZ,
[NL80211_CHAN_WIDTH_20_NOHT] = CMD_CBW_20MHZ,
};
if (chandef->width >= ARRAY_SIZE(width_to_bw))
return 0;
return width_to_bw[chandef->width];
}
static int
mt7921_mcu_parse_eeprom(struct mt76_dev *dev, struct sk_buff *skb)
{
struct mt7921_mcu_eeprom_info *res;
u8 *buf;
if (!skb)
return -EINVAL;
skb_pull(skb, sizeof(struct mt7921_mcu_rxd));
res = (struct mt7921_mcu_eeprom_info *)skb->data;
buf = dev->eeprom.data + le32_to_cpu(res->addr);
memcpy(buf, res->data, 16);
return 0;
}
static int
mt7921_mcu_parse_response(struct mt76_dev *mdev, int cmd,
struct sk_buff *skb, int seq)
{
struct mt7921_mcu_rxd *rxd;
int ret = 0;
if (!skb) {
dev_err(mdev->dev, "Message %d (seq %d) timeout\n",
cmd, seq);
return -ETIMEDOUT;
}
rxd = (struct mt7921_mcu_rxd *)skb->data;
if (seq != rxd->seq)
return -EAGAIN;
switch (cmd) {
case MCU_CMD_PATCH_SEM_CONTROL:
skb_pull(skb, sizeof(*rxd) - 4);
ret = *skb->data;
break;
case MCU_EXT_CMD_GET_TEMP:
skb_pull(skb, sizeof(*rxd) + 4);
ret = le32_to_cpu(*(__le32 *)skb->data);
break;
case MCU_EXT_CMD_EFUSE_ACCESS:
ret = mt7921_mcu_parse_eeprom(mdev, skb);
break;
case MCU_UNI_CMD_DEV_INFO_UPDATE:
case MCU_UNI_CMD_BSS_INFO_UPDATE:
case MCU_UNI_CMD_STA_REC_UPDATE:
case MCU_UNI_CMD_HIF_CTRL:
case MCU_UNI_CMD_OFFLOAD:
case MCU_UNI_CMD_SUSPEND: {
struct mt7921_mcu_uni_event *event;
skb_pull(skb, sizeof(*rxd));
event = (struct mt7921_mcu_uni_event *)skb->data;
ret = le32_to_cpu(event->status);
break;
}
case MCU_CMD_REG_READ: {
struct mt7921_mcu_reg_event *event;
skb_pull(skb, sizeof(*rxd));
event = (struct mt7921_mcu_reg_event *)skb->data;
ret = (int)le32_to_cpu(event->val);
break;
}
default:
skb_pull(skb, sizeof(struct mt7921_mcu_rxd));
break;
}
return ret;
}
static int
mt7921_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb,
int cmd, int *wait_seq)
{
struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
int txd_len, mcu_cmd = cmd & MCU_CMD_MASK;
enum mt76_mcuq_id txq = MT_MCUQ_WM;
struct mt7921_uni_txd *uni_txd;
struct mt7921_mcu_txd *mcu_txd;
__le32 *txd;
u32 val;
u8 seq;
/* TODO: make dynamic based on msg type */
mdev->mcu.timeout = 20 * HZ;
seq = ++dev->mt76.mcu.msg_seq & 0xf;
if (!seq)
seq = ++dev->mt76.mcu.msg_seq & 0xf;
if (cmd == MCU_CMD_FW_SCATTER) {
txq = MT_MCUQ_FWDL;
goto exit;
}
txd_len = cmd & MCU_UNI_PREFIX ? sizeof(*uni_txd) : sizeof(*mcu_txd);
txd = (__le32 *)skb_push(skb, txd_len);
val = FIELD_PREP(MT_TXD0_TX_BYTES, skb->len) |
FIELD_PREP(MT_TXD0_PKT_FMT, MT_TX_TYPE_CMD) |
FIELD_PREP(MT_TXD0_Q_IDX, MT_TX_MCU_PORT_RX_Q0);
txd[0] = cpu_to_le32(val);
val = MT_TXD1_LONG_FORMAT |
FIELD_PREP(MT_TXD1_HDR_FORMAT, MT_HDR_FORMAT_CMD);
txd[1] = cpu_to_le32(val);
if (cmd & MCU_UNI_PREFIX) {
uni_txd = (struct mt7921_uni_txd *)txd;
uni_txd->len = cpu_to_le16(skb->len - sizeof(uni_txd->txd));
uni_txd->option = MCU_CMD_UNI_EXT_ACK;
uni_txd->cid = cpu_to_le16(mcu_cmd);
uni_txd->s2d_index = MCU_S2D_H2N;
uni_txd->pkt_type = MCU_PKT_ID;
uni_txd->seq = seq;
goto exit;
}
mcu_txd = (struct mt7921_mcu_txd *)txd;
mcu_txd->len = cpu_to_le16(skb->len - sizeof(mcu_txd->txd));
mcu_txd->pq_id = cpu_to_le16(MCU_PQ_ID(MT_TX_PORT_IDX_MCU,
MT_TX_MCU_PORT_RX_Q0));
mcu_txd->pkt_type = MCU_PKT_ID;
mcu_txd->seq = seq;
switch (cmd & ~MCU_CMD_MASK) {
case MCU_FW_PREFIX:
mcu_txd->set_query = MCU_Q_NA;
mcu_txd->cid = mcu_cmd;
break;
case MCU_CE_PREFIX:
if (cmd & MCU_QUERY_MASK)
mcu_txd->set_query = MCU_Q_QUERY;
else
mcu_txd->set_query = MCU_Q_SET;
mcu_txd->cid = mcu_cmd;
break;
default:
mcu_txd->cid = MCU_CMD_EXT_CID;
if (cmd & MCU_QUERY_PREFIX || cmd == MCU_EXT_CMD_EFUSE_ACCESS)
mcu_txd->set_query = MCU_Q_QUERY;
else
mcu_txd->set_query = MCU_Q_SET;
mcu_txd->ext_cid = mcu_cmd;
mcu_txd->ext_cid_ack = 1;
break;
}
mcu_txd->s2d_index = MCU_S2D_H2N;
WARN_ON(cmd == MCU_EXT_CMD_EFUSE_ACCESS &&
mcu_txd->set_query != MCU_Q_QUERY);
exit:
if (wait_seq)
*wait_seq = seq;
return mt76_tx_queue_skb_raw(dev, mdev->q_mcu[txq], skb, 0);
}
static void
mt7921_mcu_tx_rate_parse(struct mt76_phy *mphy,
struct mt7921_mcu_peer_cap *peer,
struct rate_info *rate, u16 r)
{
struct ieee80211_supported_band *sband;
u16 flags = 0;
u8 txmode = FIELD_GET(MT_WTBL_RATE_TX_MODE, r);
u8 gi = 0;
u8 bw = 0;
rate->mcs = FIELD_GET(MT_WTBL_RATE_MCS, r);
rate->nss = FIELD_GET(MT_WTBL_RATE_NSS, r) + 1;
switch (peer->bw) {
case IEEE80211_STA_RX_BW_160:
gi = peer->g16;
break;
case IEEE80211_STA_RX_BW_80:
gi = peer->g8;
break;
case IEEE80211_STA_RX_BW_40:
gi = peer->g4;
break;
default:
gi = peer->g2;
break;
}
gi = txmode >= MT_PHY_TYPE_HE_SU ?
FIELD_GET(MT_WTBL_RATE_HE_GI, gi) :
FIELD_GET(MT_WTBL_RATE_GI, gi);
switch (txmode) {
case MT_PHY_TYPE_CCK:
case MT_PHY_TYPE_OFDM:
if (mphy->chandef.chan->band == NL80211_BAND_5GHZ)
sband = &mphy->sband_5g.sband;
else
sband = &mphy->sband_2g.sband;
rate->legacy = sband->bitrates[rate->mcs].bitrate;
break;
case MT_PHY_TYPE_HT:
case MT_PHY_TYPE_HT_GF:
flags |= RATE_INFO_FLAGS_MCS;
if (gi)
flags |= RATE_INFO_FLAGS_SHORT_GI;
break;
case MT_PHY_TYPE_VHT:
flags |= RATE_INFO_FLAGS_VHT_MCS;
if (gi)
flags |= RATE_INFO_FLAGS_SHORT_GI;
break;
case MT_PHY_TYPE_HE_SU:
case MT_PHY_TYPE_HE_EXT_SU:
case MT_PHY_TYPE_HE_TB:
case MT_PHY_TYPE_HE_MU:
rate->he_gi = gi;
rate->he_dcm = FIELD_GET(MT_RA_RATE_DCM_EN, r);
flags |= RATE_INFO_FLAGS_HE_MCS;
break;
default:
break;
}
rate->flags = flags;
bw = mt7921_mcu_chan_bw(&mphy->chandef) - FIELD_GET(MT_RA_RATE_BW, r);
switch (bw) {
case IEEE80211_STA_RX_BW_160:
rate->bw = RATE_INFO_BW_160;
break;
case IEEE80211_STA_RX_BW_80:
rate->bw = RATE_INFO_BW_80;
break;
case IEEE80211_STA_RX_BW_40:
rate->bw = RATE_INFO_BW_40;
break;
default:
rate->bw = RATE_INFO_BW_20;
break;
}
}
static void
mt7921_mcu_tx_rate_report(struct mt7921_dev *dev, struct sk_buff *skb,
u16 wlan_idx)
{
struct mt7921_mcu_wlan_info_event *wtbl_info;
struct mt76_phy *mphy = &dev->mphy;
struct mt7921_sta_stats *stats;
struct rate_info rate = {};
struct mt7921_sta *msta;
struct mt76_wcid *wcid;
u8 idx;
if (wlan_idx >= MT76_N_WCIDS)
return;
wtbl_info = (struct mt7921_mcu_wlan_info_event *)skb->data;
idx = wtbl_info->rate_info.rate_idx;
if (idx >= ARRAY_SIZE(wtbl_info->rate_info.rate))
return;
rcu_read_lock();
wcid = rcu_dereference(dev->mt76.wcid[wlan_idx]);
if (!wcid)
goto out;
msta = container_of(wcid, struct mt7921_sta, wcid);
stats = &msta->stats;
/* current rate */
mt7921_mcu_tx_rate_parse(mphy, &wtbl_info->peer_cap, &rate,
le16_to_cpu(wtbl_info->rate_info.rate[idx]));
stats->tx_rate = rate;
out:
rcu_read_unlock();
}
static void
mt7921_mcu_scan_event(struct mt7921_dev *dev, struct sk_buff *skb)
{
struct mt76_phy *mphy = &dev->mt76.phy;
struct mt7921_phy *phy = (struct mt7921_phy *)mphy->priv;
spin_lock_bh(&dev->mt76.lock);
__skb_queue_tail(&phy->scan_event_list, skb);
spin_unlock_bh(&dev->mt76.lock);
ieee80211_queue_delayed_work(mphy->hw, &phy->scan_work,
MT7921_HW_SCAN_TIMEOUT);
}
static void
mt7921_mcu_beacon_loss_event(struct mt7921_dev *dev, struct sk_buff *skb)
{
struct mt76_connac_beacon_loss_event *event;
struct mt76_phy *mphy;
u8 band_idx = 0; /* DBDC support */
skb_pull(skb, sizeof(struct mt7921_mcu_rxd));
event = (struct mt76_connac_beacon_loss_event *)skb->data;
if (band_idx && dev->mt76.phy2)
mphy = dev->mt76.phy2;
else
mphy = &dev->mt76.phy;
ieee80211_iterate_active_interfaces_atomic(mphy->hw,
IEEE80211_IFACE_ITER_RESUME_ALL,
mt76_connac_mcu_beacon_loss_iter, event);
}
static void
mt7921_mcu_bss_event(struct mt7921_dev *dev, struct sk_buff *skb)
{
struct mt76_phy *mphy = &dev->mt76.phy;
struct mt76_connac_mcu_bss_event *event;
skb_pull(skb, sizeof(struct mt7921_mcu_rxd));
event = (struct mt76_connac_mcu_bss_event *)skb->data;
if (event->is_absent)
ieee80211_stop_queues(mphy->hw);
else
ieee80211_wake_queues(mphy->hw);
}
static void
mt7921_mcu_debug_msg_event(struct mt7921_dev *dev, struct sk_buff *skb)
{
struct mt7921_mcu_rxd *rxd = (struct mt7921_mcu_rxd *)skb->data;
struct debug_msg {
__le16 id;
u8 type;
u8 flag;
__le32 value;
__le16 len;
u8 content[512];
} __packed * debug_msg;
u16 cur_len;
int i;
skb_pull(skb, sizeof(*rxd));
debug_msg = (struct debug_msg *)skb->data;
cur_len = min_t(u16, le16_to_cpu(debug_msg->len), 512);
if (debug_msg->type == 0x3) {
for (i = 0 ; i < cur_len; i++)
if (!debug_msg->content[i])
debug_msg->content[i] = ' ';
dev_dbg(dev->mt76.dev, "%s", debug_msg->content);
}
}
static void
mt7921_mcu_rx_unsolicited_event(struct mt7921_dev *dev, struct sk_buff *skb)
{
struct mt7921_mcu_rxd *rxd = (struct mt7921_mcu_rxd *)skb->data;
switch (rxd->eid) {
case MCU_EVENT_BSS_BEACON_LOSS:
mt7921_mcu_beacon_loss_event(dev, skb);
break;
case MCU_EVENT_SCHED_SCAN_DONE:
case MCU_EVENT_SCAN_DONE:
mt7921_mcu_scan_event(dev, skb);
return;
case MCU_EVENT_BSS_ABSENCE:
mt7921_mcu_bss_event(dev, skb);
break;
case MCU_EVENT_DBG_MSG:
mt7921_mcu_debug_msg_event(dev, skb);
break;
case MCU_EVENT_COREDUMP:
mt76_connac_mcu_coredump_event(&dev->mt76, skb,
&dev->coredump);
return;
default:
break;
}
dev_kfree_skb(skb);
}
void mt7921_mcu_rx_event(struct mt7921_dev *dev, struct sk_buff *skb)
{
struct mt7921_mcu_rxd *rxd = (struct mt7921_mcu_rxd *)skb->data;
if (rxd->eid == 0x6) {
mt76_mcu_rx_event(&dev->mt76, skb);
return;
}
if (rxd->ext_eid == MCU_EXT_EVENT_RATE_REPORT ||
rxd->eid == MCU_EVENT_BSS_BEACON_LOSS ||
rxd->eid == MCU_EVENT_SCHED_SCAN_DONE ||
rxd->eid == MCU_EVENT_BSS_ABSENCE ||
rxd->eid == MCU_EVENT_SCAN_DONE ||
rxd->eid == MCU_EVENT_DBG_MSG ||
rxd->eid == MCU_EVENT_COREDUMP ||
!rxd->seq)
mt7921_mcu_rx_unsolicited_event(dev, skb);
else
mt76_mcu_rx_event(&dev->mt76, skb);
}
/** starec & wtbl **/
static int
mt7921_mcu_sta_key_tlv(struct mt7921_sta *msta, struct sk_buff *skb,
struct ieee80211_key_conf *key, enum set_key_cmd cmd)
{
struct mt7921_sta_key_conf *bip = &msta->bip;
struct sta_rec_sec *sec;
struct tlv *tlv;
u32 len = sizeof(*sec);
tlv = mt76_connac_mcu_add_tlv(skb, STA_REC_KEY_V2, sizeof(*sec));
sec = (struct sta_rec_sec *)tlv;
sec->add = cmd;
if (cmd == SET_KEY) {
struct sec_key *sec_key;
u8 cipher;
cipher = mt7921_mcu_get_cipher(key->cipher);
if (cipher == MT_CIPHER_NONE)
return -EOPNOTSUPP;
sec_key = &sec->key[0];
sec_key->cipher_len = sizeof(*sec_key);
if (cipher == MT_CIPHER_BIP_CMAC_128) {
sec_key->cipher_id = MT_CIPHER_AES_CCMP;
sec_key->key_id = bip->keyidx;
sec_key->key_len = 16;
memcpy(sec_key->key, bip->key, 16);
sec_key = &sec->key[1];
sec_key->cipher_id = MT_CIPHER_BIP_CMAC_128;
sec_key->cipher_len = sizeof(*sec_key);
sec_key->key_len = 16;
memcpy(sec_key->key, key->key, 16);
sec->n_cipher = 2;
} else {
sec_key->cipher_id = cipher;
sec_key->key_id = key->keyidx;
sec_key->key_len = key->keylen;
memcpy(sec_key->key, key->key, key->keylen);
if (cipher == MT_CIPHER_TKIP) {
/* Rx/Tx MIC keys are swapped */
memcpy(sec_key->key + 16, key->key + 24, 8);
memcpy(sec_key->key + 24, key->key + 16, 8);
}
/* store key_conf for BIP batch update */
if (cipher == MT_CIPHER_AES_CCMP) {
memcpy(bip->key, key->key, key->keylen);
bip->keyidx = key->keyidx;
}
len -= sizeof(*sec_key);
sec->n_cipher = 1;
}
} else {
len -= sizeof(sec->key);
sec->n_cipher = 0;
}
sec->len = cpu_to_le16(len);
return 0;
}
int mt7921_mcu_add_key(struct mt7921_dev *dev, struct ieee80211_vif *vif,
struct mt7921_sta *msta, struct ieee80211_key_conf *key,
enum set_key_cmd cmd)
{
struct mt7921_vif *mvif = (struct mt7921_vif *)vif->drv_priv;
struct sk_buff *skb;
int ret;
skb = mt76_connac_mcu_alloc_sta_req(&dev->mt76, &mvif->mt76,
&msta->wcid);
if (IS_ERR(skb))
return PTR_ERR(skb);
ret = mt7921_mcu_sta_key_tlv(msta, skb, key, cmd);
if (ret)
return ret;
return mt76_mcu_skb_send_msg(&dev->mt76, skb,
MCU_UNI_CMD_STA_REC_UPDATE, true);
}
int mt7921_mcu_uni_tx_ba(struct mt7921_dev *dev,
struct ieee80211_ampdu_params *params,
bool enable)
{
struct mt7921_sta *msta = (struct mt7921_sta *)params->sta->drv_priv;
if (enable && !params->amsdu)
msta->wcid.amsdu = false;
return mt76_connac_mcu_sta_ba(&dev->mt76, &msta->vif->mt76, params,
enable, true);
}
int mt7921_mcu_uni_rx_ba(struct mt7921_dev *dev,
struct ieee80211_ampdu_params *params,
bool enable)
{
struct mt7921_sta *msta = (struct mt7921_sta *)params->sta->drv_priv;
return mt76_connac_mcu_sta_ba(&dev->mt76, &msta->vif->mt76, params,
enable, false);
}
static int mt7921_mcu_restart(struct mt76_dev *dev)
{
struct {
u8 power_mode;
u8 rsv[3];
} req = {
.power_mode = 1,
};
return mt76_mcu_send_msg(dev, MCU_CMD_NIC_POWER_CTRL, &req,
sizeof(req), false);
}
static int mt7921_driver_own(struct mt7921_dev *dev)
{
u32 reg = mt7921_reg_map_l1(dev, MT_TOP_LPCR_HOST_BAND0);
mt76_wr(dev, reg, MT_TOP_LPCR_HOST_DRV_OWN);
if (!mt76_poll_msec(dev, reg, MT_TOP_LPCR_HOST_FW_OWN,
0, 500)) {
dev_err(dev->mt76.dev, "Timeout for driver own\n");
return -EIO;
}
return 0;
}
static int mt7921_load_patch(struct mt7921_dev *dev)
{
const struct mt7921_patch_hdr *hdr;
const struct firmware *fw = NULL;
int i, ret, sem;
sem = mt76_connac_mcu_patch_sem_ctrl(&dev->mt76, true);
switch (sem) {
case PATCH_IS_DL:
return 0;
case PATCH_NOT_DL_SEM_SUCCESS:
break;
default:
dev_err(dev->mt76.dev, "Failed to get patch semaphore\n");
return -EAGAIN;
}
ret = request_firmware(&fw, MT7921_ROM_PATCH, dev->mt76.dev);
if (ret)
goto out;
if (!fw || !fw->data || fw->size < sizeof(*hdr)) {
dev_err(dev->mt76.dev, "Invalid firmware\n");
ret = -EINVAL;
goto out;
}
hdr = (const struct mt7921_patch_hdr *)(fw->data);
dev_info(dev->mt76.dev, "HW/SW Version: 0x%x, Build Time: %.16s\n",
be32_to_cpu(hdr->hw_sw_ver), hdr->build_date);
for (i = 0; i < be32_to_cpu(hdr->desc.n_region); i++) {
struct mt7921_patch_sec *sec;
const u8 *dl;
u32 len, addr;
sec = (struct mt7921_patch_sec *)(fw->data + sizeof(*hdr) +
i * sizeof(*sec));
if ((be32_to_cpu(sec->type) & PATCH_SEC_TYPE_MASK) !=
PATCH_SEC_TYPE_INFO) {
ret = -EINVAL;
goto out;
}
addr = be32_to_cpu(sec->info.addr);
len = be32_to_cpu(sec->info.len);
dl = fw->data + be32_to_cpu(sec->offs);
ret = mt76_connac_mcu_init_download(&dev->mt76, addr, len,
DL_MODE_NEED_RSP);
if (ret) {
dev_err(dev->mt76.dev, "Download request failed\n");
goto out;
}
ret = mt76_mcu_send_firmware(&dev->mt76, MCU_CMD_FW_SCATTER,
dl, len);
if (ret) {
dev_err(dev->mt76.dev, "Failed to send patch\n");
goto out;
}
}
ret = mt76_connac_mcu_start_patch(&dev->mt76);
if (ret)
dev_err(dev->mt76.dev, "Failed to start patch\n");
out:
sem = mt76_connac_mcu_patch_sem_ctrl(&dev->mt76, false);
switch (sem) {
case PATCH_REL_SEM_SUCCESS:
break;
default:
ret = -EAGAIN;
dev_err(dev->mt76.dev, "Failed to release patch semaphore\n");
goto out;
}
release_firmware(fw);
return ret;
}
static u32 mt7921_mcu_gen_dl_mode(u8 feature_set, bool is_wa)
{
u32 ret = 0;
ret |= (feature_set & FW_FEATURE_SET_ENCRYPT) ?
(DL_MODE_ENCRYPT | DL_MODE_RESET_SEC_IV) : 0;
ret |= (feature_set & FW_FEATURE_ENCRY_MODE) ?
DL_CONFIG_ENCRY_MODE_SEL : 0;
ret |= FIELD_PREP(DL_MODE_KEY_IDX,
FIELD_GET(FW_FEATURE_SET_KEY_IDX, feature_set));
ret |= DL_MODE_NEED_RSP;
ret |= is_wa ? DL_MODE_WORKING_PDA_CR4 : 0;
return ret;
}
static int
mt7921_mcu_send_ram_firmware(struct mt7921_dev *dev,
const struct mt7921_fw_trailer *hdr,
const u8 *data, bool is_wa)
{
int i, offset = 0;
u32 override = 0, option = 0;
for (i = 0; i < hdr->n_region; i++) {
const struct mt7921_fw_region *region;
int err;
u32 len, addr, mode;
region = (const struct mt7921_fw_region *)((const u8 *)hdr -
(hdr->n_region - i) * sizeof(*region));
mode = mt7921_mcu_gen_dl_mode(region->feature_set, is_wa);
len = le32_to_cpu(region->len);
addr = le32_to_cpu(region->addr);
if (region->feature_set & FW_FEATURE_OVERRIDE_ADDR)
override = addr;
err = mt76_connac_mcu_init_download(&dev->mt76, addr, len,
mode);
if (err) {
dev_err(dev->mt76.dev, "Download request failed\n");
return err;
}
err = mt76_mcu_send_firmware(&dev->mt76, MCU_CMD_FW_SCATTER,
data + offset, len);
if (err) {
dev_err(dev->mt76.dev, "Failed to send firmware.\n");
return err;
}
offset += len;
}
if (override)
option |= FW_START_OVERRIDE;
if (is_wa)
option |= FW_START_WORKING_PDA_CR4;
return mt76_connac_mcu_start_firmware(&dev->mt76, override, option);
}
static int mt7921_load_ram(struct mt7921_dev *dev)
{
const struct mt7921_fw_trailer *hdr;
const struct firmware *fw;
int ret;
ret = request_firmware(&fw, MT7921_FIRMWARE_WM, dev->mt76.dev);
if (ret)
return ret;
if (!fw || !fw->data || fw->size < sizeof(*hdr)) {
dev_err(dev->mt76.dev, "Invalid firmware\n");
ret = -EINVAL;
goto out;
}
hdr = (const struct mt7921_fw_trailer *)(fw->data + fw->size -
sizeof(*hdr));
dev_info(dev->mt76.dev, "WM Firmware Version: %.10s, Build Time: %.15s\n",
hdr->fw_ver, hdr->build_date);
ret = mt7921_mcu_send_ram_firmware(dev, hdr, fw->data, false);
if (ret) {
dev_err(dev->mt76.dev, "Failed to start WM firmware\n");
goto out;
}
snprintf(dev->mt76.hw->wiphy->fw_version,
sizeof(dev->mt76.hw->wiphy->fw_version),
"%.10s-%.15s", hdr->fw_ver, hdr->build_date);
out:
release_firmware(fw);
return ret;
}
static int mt7921_load_firmware(struct mt7921_dev *dev)
{
int ret;
ret = mt76_get_field(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_N9_RDY);
if (ret) {
dev_dbg(dev->mt76.dev, "Firmware is already download\n");
return -EIO;
}
ret = mt7921_load_patch(dev);
if (ret)
return ret;
ret = mt7921_load_ram(dev);
if (ret)
return ret;
if (!mt76_poll_msec(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_N9_RDY,
MT_TOP_MISC2_FW_N9_RDY, 1500)) {
dev_err(dev->mt76.dev, "Timeout for initializing firmware\n");
return -EIO;
}
mt76_queue_tx_cleanup(dev, dev->mt76.q_mcu[MT_MCUQ_FWDL], false);
#ifdef CONFIG_PM
dev->mt76.hw->wiphy->wowlan = &mt76_connac_wowlan_support;
#endif /* CONFIG_PM */
clear_bit(MT76_STATE_PM, &dev->mphy.state);
dev_err(dev->mt76.dev, "Firmware init done\n");
return 0;
}
int mt7921_mcu_fw_log_2_host(struct mt7921_dev *dev, u8 ctrl)
{
struct {
u8 ctrl_val;
u8 pad[3];
} data = {
.ctrl_val = ctrl
};
return mt76_mcu_send_msg(&dev->mt76, MCU_CMD_FWLOG_2_HOST, &data,
sizeof(data), false);
}
int mt7921_mcu_init(struct mt7921_dev *dev)
{
static const struct mt76_mcu_ops mt7921_mcu_ops = {
.headroom = sizeof(struct mt7921_mcu_txd),
.mcu_skb_send_msg = mt7921_mcu_send_message,
.mcu_parse_response = mt7921_mcu_parse_response,
.mcu_restart = mt7921_mcu_restart,
};
int ret;
dev->mt76.mcu_ops = &mt7921_mcu_ops;
ret = mt7921_driver_own(dev);
if (ret)
return ret;
ret = mt7921_load_firmware(dev);
if (ret)
return ret;
set_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state);
mt7921_mcu_fw_log_2_host(dev, 1);
return 0;
}
void mt7921_mcu_exit(struct mt7921_dev *dev)
{
u32 reg = mt7921_reg_map_l1(dev, MT_TOP_MISC);
__mt76_mcu_restart(&dev->mt76);
if (!mt76_poll_msec(dev, reg, MT_TOP_MISC_FW_STATE,
FIELD_PREP(MT_TOP_MISC_FW_STATE,
FW_STATE_FW_DOWNLOAD), 1000)) {
dev_err(dev->mt76.dev, "Failed to exit mcu\n");
return;
}
reg = mt7921_reg_map_l1(dev, MT_TOP_LPCR_HOST_BAND0);
mt76_wr(dev, reg, MT_TOP_LPCR_HOST_FW_OWN);
skb_queue_purge(&dev->mt76.mcu.res_q);
}
int mt7921_mcu_set_tx(struct mt7921_dev *dev, struct ieee80211_vif *vif)
{
#define WMM_AIFS_SET BIT(0)
#define WMM_CW_MIN_SET BIT(1)
#define WMM_CW_MAX_SET BIT(2)
#define WMM_TXOP_SET BIT(3)
#define WMM_PARAM_SET GENMASK(3, 0)
#define TX_CMD_MODE 1
struct edca {
u8 queue;
u8 set;
u8 aifs;
u8 cw_min;
__le16 cw_max;
__le16 txop;
};
struct mt7921_mcu_tx {
u8 total;
u8 action;
u8 valid;
u8 mode;
struct edca edca[IEEE80211_NUM_ACS];
} __packed req = {
.valid = true,
.mode = TX_CMD_MODE,
.total = IEEE80211_NUM_ACS,
};