Commit 0da3c795 authored by Sean Wang's avatar Sean Wang Committed by Felix Fietkau
Browse files

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: default avatarLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: default avatarLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: default avatarSean Wang <sean.wang@mediatek.com>
Signed-off-by: default avatarFelix Fietkau <nbd@nbd.name>
parent eaafabd2

drivers/net/wireless/mediatek/mt76/mt76_connac.h

+9 −0
Original line number Diff line number Diff line
@@ -11,6 +11,9 @@ 
#define MT76_CONNAC_MAX_SCHED_SCAN_SSID		10

#define MT76_CONNAC_MAX_SCAN_MATCH		16



#define MT76_CONNAC_COREDUMP_TIMEOUT		(HZ / 20)

#define MT76_CONNAC_COREDUMP_SZ			(128 * 1024)



enum {

	CMD_CBW_20MHZ = IEEE80211_STA_RX_BW_20,

	CMD_CBW_40MHZ = IEEE80211_STA_RX_BW_40,
@@ -57,6 +60,12 @@ struct mt76_connac_pm { 
	unsigned long idle_timeout;

};



struct mt76_connac_coredump {

	struct sk_buff_head msg_list;

	struct delayed_work work;

	unsigned long last_activity;

};



extern const struct wiphy_wowlan_support mt76_connac_wowlan_support;



static inline bool is_mt7921(struct mt76_dev *dev)

drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.c

+34 −0
Original line number Diff line number Diff line
@@ -1497,6 +1497,40 @@ int mt76_connac_mcu_sched_scan_enable(struct mt76_phy *phy, 
}

EXPORT_SYMBOL_GPL(mt76_connac_mcu_sched_scan_enable);



int mt76_connac_mcu_chip_config(struct mt76_dev *dev)

{

	struct {

		__le16 id;

		u8 type;

		u8 resp_type;

		__le16 data_size;

		__le16 resv;

		u8 data[320];

	} req = {

		.resp_type = 0,

	};



	memcpy(req.data, "assert", 7);



	return mt76_mcu_send_msg(dev, MCU_CMD_CHIP_CONFIG, &req, sizeof(req),

				 false);

}

EXPORT_SYMBOL_GPL(mt76_connac_mcu_chip_config);



void mt76_connac_mcu_coredump_event(struct mt76_dev *dev, struct sk_buff *skb,

				    struct mt76_connac_coredump *coredump)

{

	spin_lock_bh(&dev->lock);

	__skb_queue_tail(&coredump->msg_list, skb);

	spin_unlock_bh(&dev->lock);



	coredump->last_activity = jiffies;



	queue_delayed_work(dev->wq, &coredump->work,

			   MT76_CONNAC_COREDUMP_TIMEOUT);

}

EXPORT_SYMBOL_GPL(mt76_connac_mcu_coredump_event);



#ifdef CONFIG_PM



const struct wiphy_wowlan_support mt76_connac_wowlan_support = {

drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h

+4 −0
Original line number Diff line number Diff line
@@ -561,6 +561,7 @@ enum { 
	MCU_CMD_SCHED_SCAN_REQ = MCU_CE_PREFIX | 0x62,

	MCU_CMD_REG_WRITE = MCU_CE_PREFIX | 0xc0,

	MCU_CMD_REG_READ = MCU_CE_PREFIX | MCU_QUERY_MASK | 0xc0,

	MCU_CMD_CHIP_CONFIG = MCU_CE_PREFIX | 0xca,

	MCU_CMD_FWLOG_2_HOST = MCU_CE_PREFIX | 0xc5,

	MCU_CMD_GET_WTBL = MCU_CE_PREFIX | 0xcd,

};
@@ -972,4 +973,7 @@ int mt76_connac_mcu_update_gtk_rekey(struct ieee80211_hw *hw, 
int mt76_connac_mcu_set_hif_suspend(struct mt76_dev *dev, bool suspend);

void mt76_connac_mcu_set_suspend_iter(void *priv, u8 *mac,

				      struct ieee80211_vif *vif);

int mt76_connac_mcu_chip_config(struct mt76_dev *dev);

void mt76_connac_mcu_coredump_event(struct mt76_dev *dev, struct sk_buff *skb,

				    struct mt76_connac_coredump *coredump);

#endif /* __MT76_CONNAC_MCU_H */

drivers/net/wireless/mediatek/mt76/mt7921/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -2,6 +2,7 @@ 
config MT7921E

	tristate "MediaTek MT7921E (PCIe) support"

	select MT76_CONNAC_LIB

	select WANT_DEV_COREDUMP

	depends on MAC80211

	depends on PCI

	help

drivers/net/wireless/mediatek/mt76/mt7921/debugfs.c

+15 −0
Original line number Diff line number Diff line
@@ -213,6 +213,20 @@ mt7921_pm_idle_timeout_get(void *data, u64 *val) 
DEFINE_DEBUGFS_ATTRIBUTE(fops_pm_idle_timeout, mt7921_pm_idle_timeout_get,

			 mt7921_pm_idle_timeout_set, "%lld\n");



static int mt7921_config(void *data, u64 val)

{

	struct mt7921_dev *dev = data;

	int ret;



	mt7921_mutex_acquire(dev);

	ret = mt76_connac_mcu_chip_config(&dev->mt76);

	mt7921_mutex_release(dev);



	return ret;

}



DEFINE_DEBUGFS_ATTRIBUTE(fops_config, NULL, mt7921_config, "%lld\n");



int mt7921_init_debugfs(struct mt7921_dev *dev)

{

	struct dentry *dir;
@@ -230,6 +244,7 @@ int mt7921_init_debugfs(struct mt7921_dev *dev) 
	debugfs_create_file("runtime-pm", 0600, dir, dev, &fops_pm);

	debugfs_create_file("idle-timeout", 0600, dir, dev,

			    &fops_pm_idle_timeout);

	debugfs_create_file("chip_config", 0600, dir, dev, &fops_config);



	return 0;

}