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mt76/mt7921/init.c
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Sean WangandFelix Fietkau 5f4f6792fb mt76: mt7921: add coredump support 
Introduce coredump support to mt7921 driver.

The coredump would be produced when MCU met the fatal error or driver
sent out the specific cmd to force trigger it.

Co-developed-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
2021-01-29 18:18:44 +01:00

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7.9 KiB
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// SPDX-License-Identifier: ISC
/* Copyright (C) 2020 MediaTek Inc. */
#include <linux/etherdevice.h>
#include "mt7921.h"
#include "mac.h"
#include "mcu.h"
#include "eeprom.h"
#define CCK_RATE(_idx, _rate) { \
.bitrate = _rate, \
.flags = IEEE80211_RATE_SHORT_PREAMBLE, \
.hw_value = (MT_PHY_TYPE_CCK << 8) | (_idx), \
.hw_value_short = (MT_PHY_TYPE_CCK << 8) | (4 + (_idx)), \
}
#define OFDM_RATE(_idx, _rate) { \
.bitrate = _rate, \
.hw_value = (MT_PHY_TYPE_OFDM << 8) | (_idx), \
.hw_value_short = (MT_PHY_TYPE_OFDM << 8) | (_idx), \
}
static struct ieee80211_rate mt7921_rates[] = {
CCK_RATE(0, 10),
CCK_RATE(1, 20),
CCK_RATE(2, 55),
CCK_RATE(3, 110),
OFDM_RATE(11, 60),
OFDM_RATE(15, 90),
OFDM_RATE(10, 120),
OFDM_RATE(14, 180),
OFDM_RATE(9, 240),
OFDM_RATE(13, 360),
OFDM_RATE(8, 480),
OFDM_RATE(12, 540),
};
static const struct ieee80211_iface_limit if_limits[] = {
{
.max = MT7921_MAX_INTERFACES,
.types = BIT(NL80211_IFTYPE_STATION)
}
};
static const struct ieee80211_iface_combination if_comb[] = {
{
.limits = if_limits,
.n_limits = ARRAY_SIZE(if_limits),
.max_interfaces = MT7921_MAX_INTERFACES,
.num_different_channels = 1,
.beacon_int_infra_match = true,
}
};
static void
mt7921_regd_notifier(struct wiphy *wiphy,
struct regulatory_request *request)
{
struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
struct mt7921_dev *dev = mt7921_hw_dev(hw);
memcpy(dev->mt76.alpha2, request->alpha2, sizeof(dev->mt76.alpha2));
dev->mt76.region = request->dfs_region;
mt7921_mutex_acquire(dev);
mt76_connac_mcu_set_channel_domain(hw->priv);
mt7921_mutex_release(dev);
}
static void
mt7921_init_wiphy(struct ieee80211_hw *hw)
{
struct mt7921_phy *phy = mt7921_hw_phy(hw);
struct wiphy *wiphy = hw->wiphy;
hw->queues = 4;
hw->max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
hw->max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
phy->slottime = 9;
hw->sta_data_size = sizeof(struct mt7921_sta);
hw->vif_data_size = sizeof(struct mt7921_vif);
wiphy->iface_combinations = if_comb;
wiphy->n_iface_combinations = ARRAY_SIZE(if_comb);
wiphy->max_scan_ie_len = MT76_CONNAC_SCAN_IE_LEN;
wiphy->max_scan_ssids = 4;
wiphy->max_sched_scan_plan_interval =
MT76_CONNAC_MAX_SCHED_SCAN_INTERVAL;
wiphy->max_sched_scan_ie_len = IEEE80211_MAX_DATA_LEN;
wiphy->max_sched_scan_ssids = MT76_CONNAC_MAX_SCHED_SCAN_SSID;
wiphy->max_match_sets = MT76_CONNAC_MAX_SCAN_MATCH;
wiphy->max_sched_scan_reqs = 1;
wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
wiphy->reg_notifier = mt7921_regd_notifier;
wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_SET_SCAN_DWELL);
ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
ieee80211_hw_set(hw, HAS_RATE_CONTROL);
ieee80211_hw_set(hw, SUPPORTS_TX_ENCAP_OFFLOAD);
ieee80211_hw_set(hw, WANT_MONITOR_VIF);
ieee80211_hw_set(hw, SUPPORTS_PS);
ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
hw->max_tx_fragments = 4;
}
static void
mt7921_mac_init_band(struct mt7921_dev *dev, u8 band)
{
u32 mask, set;
mt76_rmw_field(dev, MT_TMAC_CTCR0(band),
MT_TMAC_CTCR0_INS_DDLMT_REFTIME, 0x3f);
mt76_set(dev, MT_TMAC_CTCR0(band),
MT_TMAC_CTCR0_INS_DDLMT_VHT_SMPDU_EN |
MT_TMAC_CTCR0_INS_DDLMT_EN);
mask = MT_MDP_RCFR0_MCU_RX_MGMT |
MT_MDP_RCFR0_MCU_RX_CTL_NON_BAR |
MT_MDP_RCFR0_MCU_RX_CTL_BAR;
set = FIELD_PREP(MT_MDP_RCFR0_MCU_RX_MGMT, MT_MDP_TO_HIF) |
FIELD_PREP(MT_MDP_RCFR0_MCU_RX_CTL_NON_BAR, MT_MDP_TO_HIF) |
FIELD_PREP(MT_MDP_RCFR0_MCU_RX_CTL_BAR, MT_MDP_TO_HIF);
mt76_rmw(dev, MT_MDP_BNRCFR0(band), mask, set);
mask = MT_MDP_RCFR1_MCU_RX_BYPASS |
MT_MDP_RCFR1_RX_DROPPED_UCAST |
MT_MDP_RCFR1_RX_DROPPED_MCAST;
set = FIELD_PREP(MT_MDP_RCFR1_MCU_RX_BYPASS, MT_MDP_TO_HIF) |
FIELD_PREP(MT_MDP_RCFR1_RX_DROPPED_UCAST, MT_MDP_TO_HIF) |
FIELD_PREP(MT_MDP_RCFR1_RX_DROPPED_MCAST, MT_MDP_TO_HIF);
mt76_rmw(dev, MT_MDP_BNRCFR1(band), mask, set);
mt76_set(dev, MT_WF_RMAC_MIB_TIME0(band), MT_WF_RMAC_MIB_RXTIME_EN);
mt76_set(dev, MT_WF_RMAC_MIB_AIRTIME0(band), MT_WF_RMAC_MIB_RXTIME_EN);
mt76_rmw_field(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_MAX_RX_LEN, 1536);
/* disable rx rate report by default due to hw issues */
mt76_clear(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_RXD_G5_EN);
}
static void mt7921_mac_init(struct mt7921_dev *dev)
{
int i;
mt76_rmw_field(dev, MT_MDP_DCR1, MT_MDP_DCR1_MAX_RX_LEN, 1536);
/* disable hardware de-agg */
mt76_clear(dev, MT_MDP_DCR0, MT_MDP_DCR0_DAMSDU_EN);
mt76_clear(dev, MT_MDP_DCR0, MT_MDP_DCR0_RX_HDR_TRANS_EN);
for (i = 0; i < MT7921_WTBL_SIZE; i++)
mt7921_mac_wtbl_update(dev, i,
MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
for (i = 0; i < 2; i++)
mt7921_mac_init_band(dev, i);
mt76_connac_mcu_set_rts_thresh(&dev->mt76, 0x92b, 0);
}
static void mt7921_init_work(struct work_struct *work)
{
struct mt7921_dev *dev = container_of(work, struct mt7921_dev,
init_work);
mt7921_mcu_set_eeprom(dev);
mt7921_mac_init(dev);
}
static int mt7921_init_hardware(struct mt7921_dev *dev)
{
int ret, idx;
INIT_WORK(&dev->init_work, mt7921_init_work);
spin_lock_init(&dev->token_lock);
idr_init(&dev->token);
ret = mt7921_dma_init(dev);
if (ret)
return ret;
set_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
/* force firmware operation mode into normal state,
* which should be set before firmware download stage.
*/
mt76_wr(dev, MT_SWDEF_MODE, MT_SWDEF_NORMAL_MODE);
ret = mt7921_mcu_init(dev);
if (ret)
return ret;
ret = mt7921_eeprom_init(dev);
if (ret < 0)
return ret;
/* Beacon and mgmt frames should occupy wcid 0 */
idx = mt76_wcid_alloc(dev->mt76.wcid_mask, MT7921_WTBL_STA - 1);
if (idx)
return -ENOSPC;
dev->mt76.global_wcid.idx = idx;
dev->mt76.global_wcid.hw_key_idx = -1;
dev->mt76.global_wcid.tx_info |= MT_WCID_TX_INFO_SET;
rcu_assign_pointer(dev->mt76.wcid[idx], &dev->mt76.global_wcid);
return 0;
}
int mt7921_register_device(struct mt7921_dev *dev)
{
struct ieee80211_hw *hw = mt76_hw(dev);
int ret;
dev->phy.dev = dev;
dev->phy.mt76 = &dev->mt76.phy;
dev->mt76.phy.priv = &dev->phy;
INIT_DELAYED_WORK(&dev->pm.ps_work, mt7921_pm_power_save_work);
INIT_WORK(&dev->pm.wake_work, mt7921_pm_wake_work);
init_completion(&dev->pm.wake_cmpl);
spin_lock_init(&dev->pm.txq_lock);
set_bit(MT76_STATE_PM, &dev->mphy.state);
INIT_LIST_HEAD(&dev->phy.stats_list);
INIT_DELAYED_WORK(&dev->mphy.mac_work, mt7921_mac_work);
INIT_DELAYED_WORK(&dev->phy.scan_work, mt7921_scan_work);
INIT_DELAYED_WORK(&dev->coredump.work, mt7921_coredump_work);
skb_queue_head_init(&dev->phy.scan_event_list);
skb_queue_head_init(&dev->coredump.msg_list);
INIT_LIST_HEAD(&dev->sta_poll_list);
spin_lock_init(&dev->sta_poll_lock);
init_waitqueue_head(&dev->reset_wait);
INIT_WORK(&dev->reset_work, mt7921_mac_reset_work);
ret = mt7921_init_hardware(dev);
if (ret)
return ret;
mt7921_init_wiphy(hw);
dev->pm.idle_timeout = MT7921_PM_TIMEOUT;
dev->mphy.sband_2g.sband.ht_cap.cap |=
IEEE80211_HT_CAP_LDPC_CODING |
IEEE80211_HT_CAP_MAX_AMSDU;
dev->mphy.sband_5g.sband.ht_cap.cap |=
IEEE80211_HT_CAP_LDPC_CODING |
IEEE80211_HT_CAP_MAX_AMSDU;
dev->mphy.sband_5g.sband.vht_cap.cap |=
IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991 |
IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
dev->mphy.sband_5g.sband.vht_cap.cap |=
IEEE80211_VHT_CAP_SHORT_GI_160 |
IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ;
dev->mphy.hw->wiphy->available_antennas_rx = dev->mphy.chainmask;
dev->mphy.hw->wiphy->available_antennas_tx = dev->mphy.chainmask;
mt76_set_stream_caps(&dev->mphy, true);
mt7921_set_stream_he_caps(&dev->phy);
ret = mt76_register_device(&dev->mt76, true, mt7921_rates,
ARRAY_SIZE(mt7921_rates));
if (ret)
return ret;
ieee80211_queue_work(mt76_hw(dev), &dev->init_work);
return mt7921_init_debugfs(dev);
}
void mt7921_unregister_device(struct mt7921_dev *dev)
{
mt76_unregister_device(&dev->mt76);
mt7921_mcu_exit(dev);
mt7921_dma_cleanup(dev);
mt7921_tx_token_put(dev);
tasklet_disable(&dev->irq_tasklet);
mt76_free_device(&dev->mt76);
}
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