Resguardo inicial

linux-7.2.3/drivers/net/wireless/quantenna/Kconfig

@@ -0,0 +1,17 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config WLAN_VENDOR_QUANTENNA
+	bool "Quantenna wireless cards support"
+	default y
+	help
+	  If you have a wireless card belonging to this class, say Y.
+
+	  Note that the answer to this question doesn't directly affect the
+	  kernel: saying N will just cause the configurator to skip all the
+	  questions about these cards. If you say Y, you will be asked for
+	  your specific card in the following questions.
+
+if WLAN_VENDOR_QUANTENNA
+
+source "drivers/net/wireless/quantenna/qtnfmac/Kconfig"
+
+endif # WLAN_VENDOR_QUANTENNA

linux-7.2.3/drivers/net/wireless/quantenna/Makefile

@@ -0,0 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Copyright (c) 2015-2016 Quantenna Communications, Inc.
+# All rights reserved.
+#
+
+obj-$(CONFIG_QTNFMAC)	+= qtnfmac/

linux-7.2.3/drivers/net/wireless/quantenna/qtnfmac/Kconfig

@@ -0,0 +1,21 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config QTNFMAC
+	tristate
+	depends on QTNFMAC_PCIE
+	default m if QTNFMAC_PCIE=m
+	default y if QTNFMAC_PCIE=y
+
+config QTNFMAC_PCIE
+	tristate "Quantenna QSR1000/QSR2000/QSR10g PCIe support"
+	default n
+	depends on PCI && CFG80211
+	select QTNFMAC
+	select FW_LOADER
+	select CRC32
+	help
+	  This option adds support for wireless adapters based on Quantenna
+	  802.11ac QSR10g (aka Pearl) and QSR1000/QSR2000 (aka Topaz)
+	  FullMAC chipsets running over PCIe.
+
+	  If you choose to build it as a module, two modules will be built:
+	  qtnfmac.ko and qtnfmac_pcie.ko.

linux-7.2.3/drivers/net/wireless/quantenna/qtnfmac/Makefile

@@ -0,0 +1,30 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Copyright (c) 2015-2016 Quantenna Communications, Inc.
+# All rights reserved.
+#
+
+ccflags-y += \
+	-Idrivers/net/wireless/quantenna/qtnfmac
+
+obj-$(CONFIG_QTNFMAC) += qtnfmac.o
+qtnfmac-objs += \
+	core.o \
+	commands.o \
+	trans.o \
+	cfg80211.o \
+	event.o \
+	util.o \
+	qlink_util.o
+
+#
+
+obj-$(CONFIG_QTNFMAC_PCIE) += qtnfmac_pcie.o
+
+qtnfmac_pcie-objs += \
+	shm_ipc.o \
+	pcie/pcie.o \
+	pcie/pearl_pcie.o \
+	pcie/topaz_pcie.o
+
+qtnfmac_pcie-$(CONFIG_DEBUG_FS) += debug.o

linux-7.2.3/drivers/net/wireless/quantenna/qtnfmac/bus.h

@@ -0,0 +1,158 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Copyright (c) 2015 Quantenna Communications. All rights reserved. */
+
+#ifndef QTNFMAC_BUS_H
+#define QTNFMAC_BUS_H
+
+#include <linux/netdevice.h>
+#include <linux/workqueue.h>
+
+#include "trans.h"
+#include "core.h"
+
+#define QTNF_MAX_MAC		3
+
+#define HBM_FRAME_META_MAGIC_PATTERN_S	0xAB
+#define HBM_FRAME_META_MAGIC_PATTERN_E	0xBA
+
+struct qtnf_frame_meta_info {
+	u8 magic_s;
+	u8 ifidx;
+	u8 macid;
+	u8 magic_e;
+} __packed;
+
+enum qtnf_fw_state {
+	QTNF_FW_STATE_DETACHED,
+	QTNF_FW_STATE_BOOT_DONE,
+	QTNF_FW_STATE_ACTIVE,
+	QTNF_FW_STATE_RUNNING,
+	QTNF_FW_STATE_DEAD,
+};
+
+struct qtnf_bus;
+
+struct qtnf_bus_ops {
+	/* mgmt methods */
+	int (*preinit)(struct qtnf_bus *);
+	void (*stop)(struct qtnf_bus *);
+
+	/* control path methods */
+	int (*control_tx)(struct qtnf_bus *, struct sk_buff *);
+
+	/* data xfer methods */
+	int (*data_tx)(struct qtnf_bus *bus, struct sk_buff *skb,
+		       unsigned int macid, unsigned int vifid);
+	void (*data_tx_timeout)(struct qtnf_bus *, struct net_device *);
+	void (*data_tx_use_meta_set)(struct qtnf_bus *bus, bool use_meta);
+	void (*data_rx_start)(struct qtnf_bus *);
+	void (*data_rx_stop)(struct qtnf_bus *);
+};
+
+struct qtnf_bus {
+	struct device *dev;
+	enum qtnf_fw_state fw_state;
+	u32 chip;
+	u32 chiprev;
+	struct qtnf_bus_ops *bus_ops;
+	struct qtnf_wmac *mac[QTNF_MAX_MAC];
+	struct qtnf_qlink_transport trans;
+	struct qtnf_hw_info hw_info;
+	struct napi_struct mux_napi;
+	struct net_device *mux_dev;
+	struct workqueue_struct *workqueue;
+	struct workqueue_struct *hprio_workqueue;
+	struct work_struct fw_work;
+	struct work_struct event_work;
+	struct mutex bus_lock; /* lock during command/event processing */
+	struct dentry *dbg_dir;
+	struct notifier_block netdev_nb;
+	u8 hw_id[ETH_ALEN];
+	/* bus private data */
+	char bus_priv[] __aligned(sizeof(void *));
+};
+
+static inline bool qtnf_fw_is_up(struct qtnf_bus *bus)
+{
+	enum qtnf_fw_state state = bus->fw_state;
+
+	return ((state == QTNF_FW_STATE_ACTIVE) ||
+		(state == QTNF_FW_STATE_RUNNING));
+}
+
+static inline bool qtnf_fw_is_attached(struct qtnf_bus *bus)
+{
+	enum qtnf_fw_state state = bus->fw_state;
+
+	return ((state == QTNF_FW_STATE_ACTIVE) ||
+		(state == QTNF_FW_STATE_RUNNING) ||
+		(state == QTNF_FW_STATE_DEAD));
+}
+
+static inline void *get_bus_priv(struct qtnf_bus *bus)
+{
+	if (WARN(!bus, "qtnfmac: invalid bus pointer"))
+		return NULL;
+
+	return &bus->bus_priv;
+}
+
+/* callback wrappers */
+
+static inline int qtnf_bus_preinit(struct qtnf_bus *bus)
+{
+	if (!bus->bus_ops->preinit)
+		return 0;
+	return bus->bus_ops->preinit(bus);
+}
+
+static inline void qtnf_bus_stop(struct qtnf_bus *bus)
+{
+	if (!bus->bus_ops->stop)
+		return;
+	bus->bus_ops->stop(bus);
+}
+
+static inline int qtnf_bus_data_tx(struct qtnf_bus *bus, struct sk_buff *skb,
+				   unsigned int macid, unsigned int vifid)
+{
+	return bus->bus_ops->data_tx(bus, skb, macid, vifid);
+}
+
+static inline void
+qtnf_bus_data_tx_timeout(struct qtnf_bus *bus, struct net_device *ndev)
+{
+	return bus->bus_ops->data_tx_timeout(bus, ndev);
+}
+
+static inline int qtnf_bus_control_tx(struct qtnf_bus *bus, struct sk_buff *skb)
+{
+	return bus->bus_ops->control_tx(bus, skb);
+}
+
+static inline void qtnf_bus_data_rx_start(struct qtnf_bus *bus)
+{
+	return bus->bus_ops->data_rx_start(bus);
+}
+
+static inline void qtnf_bus_data_rx_stop(struct qtnf_bus *bus)
+{
+	return bus->bus_ops->data_rx_stop(bus);
+}
+
+static __always_inline void qtnf_bus_lock(struct qtnf_bus *bus)
+{
+	mutex_lock(&bus->bus_lock);
+}
+
+static __always_inline void qtnf_bus_unlock(struct qtnf_bus *bus)
+{
+	mutex_unlock(&bus->bus_lock);
+}
+
+/* interface functions from common layer */
+
+int qtnf_core_attach(struct qtnf_bus *bus);
+void qtnf_core_detach(struct qtnf_bus *bus);
+
+#endif /* QTNFMAC_BUS_H */

linux-7.2.3/drivers/net/wireless/quantenna/qtnfmac/cfg80211.h

@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Copyright (c) 2015-2016 Quantenna Communications. All rights reserved. */
+
+#ifndef _QTN_FMAC_CFG80211_H_
+#define _QTN_FMAC_CFG80211_H_
+
+#include <net/cfg80211.h>
+
+#include "core.h"
+
+int qtnf_wiphy_register(struct qtnf_hw_info *hw_info, struct qtnf_wmac *mac);
+int qtnf_del_virtual_intf(struct wiphy *wiphy, struct wireless_dev *wdev);
+void qtnf_cfg80211_vif_reset(struct qtnf_vif *vif);
+void qtnf_band_init_rates(struct ieee80211_supported_band *band);
+void qtnf_band_setup_htvht_caps(struct qtnf_mac_info *macinfo,
+				struct ieee80211_supported_band *band);
+
+#endif /* _QTN_FMAC_CFG80211_H_ */

linux-7.2.3/drivers/net/wireless/quantenna/qtnfmac/commands.h

@@ -0,0 +1,82 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Copyright (c) 2016 Quantenna Communications. All rights reserved. */
+
+#ifndef QLINK_COMMANDS_H_
+#define QLINK_COMMANDS_H_
+
+#include <linux/nl80211.h>
+
+#include "core.h"
+#include "bus.h"
+
+int qtnf_cmd_send_init_fw(struct qtnf_bus *bus);
+void qtnf_cmd_send_deinit_fw(struct qtnf_bus *bus);
+int qtnf_cmd_get_hw_info(struct qtnf_bus *bus);
+int qtnf_cmd_get_mac_info(struct qtnf_wmac *mac);
+int qtnf_cmd_send_add_intf(struct qtnf_vif *vif, enum nl80211_iftype iftype,
+			   int use4addr, u8 *mac_addr);
+int qtnf_cmd_send_change_intf_type(struct qtnf_vif *vif,
+				   enum nl80211_iftype iftype,
+				   int use4addr,
+				   u8 *mac_addr);
+int qtnf_cmd_send_del_intf(struct qtnf_vif *vif);
+int qtnf_cmd_band_info_get(struct qtnf_wmac *mac,
+			   struct ieee80211_supported_band *band);
+int qtnf_cmd_send_regulatory_config(struct qtnf_wmac *mac, const char *alpha2);
+int qtnf_cmd_send_start_ap(struct qtnf_vif *vif,
+			   const struct cfg80211_ap_settings *s);
+int qtnf_cmd_send_stop_ap(struct qtnf_vif *vif);
+int qtnf_cmd_send_register_mgmt(struct qtnf_vif *vif, u16 frame_type, bool reg);
+int qtnf_cmd_send_frame(struct qtnf_vif *vif, u32 cookie, u16 flags,
+			u16 freq, const u8 *buf, size_t len);
+int qtnf_cmd_send_mgmt_set_appie(struct qtnf_vif *vif, u8 frame_type,
+				 const u8 *buf, size_t len);
+int qtnf_cmd_get_sta_info(struct qtnf_vif *vif, const u8 *sta_mac,
+			  struct station_info *sinfo);
+int qtnf_cmd_send_phy_params(struct qtnf_wmac *mac, u16 cmd_action,
+			     void *data_buf);
+int qtnf_cmd_send_add_key(struct qtnf_vif *vif, u8 key_index, bool pairwise,
+			  const u8 *mac_addr, struct key_params *params);
+int qtnf_cmd_send_del_key(struct qtnf_vif *vif, u8 key_index, bool pairwise,
+			  const u8 *mac_addr);
+int qtnf_cmd_send_set_default_key(struct qtnf_vif *vif, u8 key_index,
+				  bool unicast, bool multicast);
+int qtnf_cmd_send_set_default_mgmt_key(struct qtnf_vif *vif, u8 key_index);
+int qtnf_cmd_send_add_sta(struct qtnf_vif *vif, const u8 *mac,
+			  struct station_parameters *params);
+int qtnf_cmd_send_change_sta(struct qtnf_vif *vif, const u8 *mac,
+			     struct station_parameters *params);
+int qtnf_cmd_send_del_sta(struct qtnf_vif *vif,
+			  struct station_del_parameters *params);
+int qtnf_cmd_send_scan(struct qtnf_wmac *mac);
+int qtnf_cmd_send_connect(struct qtnf_vif *vif,
+			  struct cfg80211_connect_params *sme);
+int qtnf_cmd_send_external_auth(struct qtnf_vif *vif,
+				struct cfg80211_external_auth_params *auth);
+int qtnf_cmd_send_disconnect(struct qtnf_vif *vif,
+			     u16 reason_code);
+int qtnf_cmd_send_updown_intf(struct qtnf_vif *vif,
+			      bool up);
+int qtnf_cmd_reg_notify(struct qtnf_wmac *mac, struct regulatory_request *req,
+			bool slave_radar, bool dfs_offload);
+int qtnf_cmd_get_chan_stats(struct qtnf_wmac *mac, u32 chan_freq,
+			    struct survey_info *survey);
+int qtnf_cmd_send_chan_switch(struct qtnf_vif *vif,
+			      struct cfg80211_csa_settings *params);
+int qtnf_cmd_get_channel(struct qtnf_vif *vif, struct cfg80211_chan_def *chdef);
+int qtnf_cmd_start_cac(const struct qtnf_vif *vif,
+		       const struct cfg80211_chan_def *chdef,
+		       u32 cac_time_ms);
+int qtnf_cmd_set_mac_acl(const struct qtnf_vif *vif,
+			 const struct cfg80211_acl_data *params);
+int qtnf_cmd_send_pm_set(const struct qtnf_vif *vif, u8 pm_mode, int timeout);
+int qtnf_cmd_get_tx_power(const struct qtnf_vif *vif, int *dbm);
+int qtnf_cmd_set_tx_power(const struct qtnf_vif *vif,
+			  enum nl80211_tx_power_setting type, int mbm);
+int qtnf_cmd_send_wowlan_set(const struct qtnf_vif *vif,
+			     const struct cfg80211_wowlan *wowl);
+int qtnf_cmd_netdev_changeupper(const struct qtnf_vif *vif, int br_domain);
+int qtnf_cmd_send_update_owe(struct qtnf_vif *vif,
+			     struct cfg80211_update_owe_info *owe);
+
+#endif /* QLINK_COMMANDS_H_ */

linux-7.2.3/drivers/net/wireless/quantenna/qtnfmac/core.c

@@ -0,0 +1,933 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Copyright (c) 2015-2016 Quantenna Communications. All rights reserved. */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/if_ether.h>
+#include <linux/nospec.h>
+
+#include "core.h"
+#include "bus.h"
+#include "trans.h"
+#include "commands.h"
+#include "cfg80211.h"
+#include "event.h"
+#include "util.h"
+#include "switchdev.h"
+
+#define QTNF_PRIMARY_VIF_IDX	0
+
+static bool slave_radar = true;
+module_param(slave_radar, bool, 0644);
+MODULE_PARM_DESC(slave_radar, "set 0 to disable radar detection in slave mode");
+
+static bool dfs_offload;
+module_param(dfs_offload, bool, 0644);
+MODULE_PARM_DESC(dfs_offload, "set 1 to enable DFS offload to firmware");
+
+static struct dentry *qtnf_debugfs_dir;
+
+bool qtnf_slave_radar_get(void)
+{
+	return slave_radar;
+}
+
+bool qtnf_dfs_offload_get(void)
+{
+	return dfs_offload;
+}
+
+struct qtnf_wmac *qtnf_core_get_mac(const struct qtnf_bus *bus, u8 macid)
+{
+	struct qtnf_wmac *mac = NULL;
+
+	if (macid >= QTNF_MAX_MAC) {
+		pr_err("invalid MAC index %u\n", macid);
+		return NULL;
+	}
+
+	macid = array_index_nospec(macid, QTNF_MAX_MAC);
+	mac = bus->mac[macid];
+
+	if (unlikely(!mac)) {
+		pr_err("MAC%u: not initialized\n", macid);
+		return NULL;
+	}
+
+	return mac;
+}
+
+/* Netdev handler for open.
+ */
+static int qtnf_netdev_open(struct net_device *ndev)
+{
+	netif_carrier_off(ndev);
+	qtnf_netdev_updown(ndev, 1);
+	return 0;
+}
+
+/* Netdev handler for close.
+ */
+static int qtnf_netdev_close(struct net_device *ndev)
+{
+	netif_carrier_off(ndev);
+	qtnf_virtual_intf_cleanup(ndev);
+	qtnf_netdev_updown(ndev, 0);
+	return 0;
+}
+
+static void qtnf_packet_send_hi_pri(struct sk_buff *skb)
+{
+	struct qtnf_vif *vif = qtnf_netdev_get_priv(skb->dev);
+
+	skb_queue_tail(&vif->high_pri_tx_queue, skb);
+	queue_work(vif->mac->bus->hprio_workqueue, &vif->high_pri_tx_work);
+}
+
+/* Netdev handler for data transmission.
+ */
+static netdev_tx_t
+qtnf_netdev_hard_start_xmit(struct sk_buff *skb, struct net_device *ndev)
+{
+	struct qtnf_vif *vif;
+	struct qtnf_wmac *mac;
+
+	vif = qtnf_netdev_get_priv(ndev);
+
+	if (unlikely(skb->dev != ndev)) {
+		pr_err_ratelimited("invalid skb->dev");
+		dev_kfree_skb_any(skb);
+		return 0;
+	}
+
+	if (unlikely(vif->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED)) {
+		pr_err_ratelimited("%s: VIF not initialized\n", ndev->name);
+		dev_kfree_skb_any(skb);
+		return 0;
+	}
+
+	mac = vif->mac;
+	if (unlikely(!mac)) {
+		pr_err_ratelimited("%s: NULL mac pointer", ndev->name);
+		dev_kfree_skb_any(skb);
+		return 0;
+	}
+
+	if (!skb->len || (skb->len > ETH_FRAME_LEN)) {
+		pr_err_ratelimited("%s: invalid skb len %d\n", ndev->name,
+				   skb->len);
+		dev_kfree_skb_any(skb);
+		ndev->stats.tx_dropped++;
+		return 0;
+	}
+
+	/* tx path is enabled: reset vif timeout */
+	vif->cons_tx_timeout_cnt = 0;
+
+	if (unlikely(skb->protocol == htons(ETH_P_PAE))) {
+		qtnf_packet_send_hi_pri(skb);
+		dev_sw_netstats_tx_add(ndev, 1, skb->len);
+		return NETDEV_TX_OK;
+	}
+
+	return qtnf_bus_data_tx(mac->bus, skb, mac->macid, vif->vifid);
+}
+
+/* Netdev handler for transmission timeout.
+ */
+static void qtnf_netdev_tx_timeout(struct net_device *ndev, unsigned int txqueue)
+{
+	struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev);
+	struct qtnf_wmac *mac;
+	struct qtnf_bus *bus;
+
+	if (unlikely(!vif || !vif->mac || !vif->mac->bus))
+		return;
+
+	mac = vif->mac;
+	bus = mac->bus;
+
+	pr_warn("VIF%u.%u: Tx timeout- %lu\n", mac->macid, vif->vifid, jiffies);
+
+	qtnf_bus_data_tx_timeout(bus, ndev);
+	ndev->stats.tx_errors++;
+
+	if (++vif->cons_tx_timeout_cnt > QTNF_TX_TIMEOUT_TRSHLD) {
+		pr_err("Tx timeout threshold exceeded !\n");
+		pr_err("schedule interface %s reset !\n", netdev_name(ndev));
+		queue_work(bus->workqueue, &vif->reset_work);
+	}
+}
+
+static int qtnf_netdev_set_mac_address(struct net_device *ndev, void *addr)
+{
+	struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev);
+	struct sockaddr *sa = addr;
+	int ret;
+	unsigned char old_addr[ETH_ALEN];
+
+	memcpy(old_addr, sa->sa_data, sizeof(old_addr));
+
+	ret = eth_mac_addr(ndev, sa);
+	if (ret)
+		return ret;
+
+	qtnf_scan_done(vif->mac, true);
+
+	ret = qtnf_cmd_send_change_intf_type(vif, vif->wdev.iftype,
+					     vif->wdev.use_4addr,
+					     sa->sa_data);
+
+	if (ret)
+		eth_hw_addr_set(ndev, old_addr);
+
+	return ret;
+}
+
+static int qtnf_netdev_port_parent_id(struct net_device *ndev,
+				      struct netdev_phys_item_id *ppid)
+{
+	const struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev);
+	const struct qtnf_bus *bus = vif->mac->bus;
+
+	ppid->id_len = sizeof(bus->hw_id);
+	memcpy(&ppid->id, bus->hw_id, ppid->id_len);
+
+	return 0;
+}
+
+/* Network device ops handlers */
+const struct net_device_ops qtnf_netdev_ops = {
+	.ndo_open = qtnf_netdev_open,
+	.ndo_stop = qtnf_netdev_close,
+	.ndo_start_xmit = qtnf_netdev_hard_start_xmit,
+	.ndo_tx_timeout = qtnf_netdev_tx_timeout,
+	.ndo_set_mac_address = qtnf_netdev_set_mac_address,
+	.ndo_get_port_parent_id = qtnf_netdev_port_parent_id,
+};
+
+static int qtnf_mac_init_single_band(struct wiphy *wiphy,
+				     struct qtnf_wmac *mac,
+				     enum nl80211_band band)
+{
+	int ret;
+
+	wiphy->bands[band] = kzalloc_obj(*wiphy->bands[band]);
+	if (!wiphy->bands[band])
+		return -ENOMEM;
+
+	wiphy->bands[band]->band = band;
+
+	ret = qtnf_cmd_band_info_get(mac, wiphy->bands[band]);
+	if (ret) {
+		pr_err("MAC%u: band %u: failed to get chans info: %d\n",
+		       mac->macid, band, ret);
+		return ret;
+	}
+
+	qtnf_band_init_rates(wiphy->bands[band]);
+
+	return 0;
+}
+
+static int qtnf_mac_init_bands(struct qtnf_wmac *mac)
+{
+	struct wiphy *wiphy = priv_to_wiphy(mac);
+	int ret = 0;
+
+	if (mac->macinfo.bands_cap & QLINK_BAND_2GHZ) {
+		ret = qtnf_mac_init_single_band(wiphy, mac, NL80211_BAND_2GHZ);
+		if (ret)
+			goto out;
+	}
+
+	if (mac->macinfo.bands_cap & QLINK_BAND_5GHZ) {
+		ret = qtnf_mac_init_single_band(wiphy, mac, NL80211_BAND_5GHZ);
+		if (ret)
+			goto out;
+	}
+
+	if (mac->macinfo.bands_cap & QLINK_BAND_60GHZ)
+		ret = qtnf_mac_init_single_band(wiphy, mac, NL80211_BAND_60GHZ);
+
+out:
+	return ret;
+}
+
+struct qtnf_vif *qtnf_mac_get_free_vif(struct qtnf_wmac *mac)
+{
+	struct qtnf_vif *vif;
+	int i;
+
+	for (i = 0; i < QTNF_MAX_INTF; i++) {
+		vif = &mac->iflist[i];
+		if (vif->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED)
+			return vif;
+	}
+
+	return NULL;
+}
+
+struct qtnf_vif *qtnf_mac_get_base_vif(struct qtnf_wmac *mac)
+{
+	struct qtnf_vif *vif;
+
+	vif = &mac->iflist[QTNF_PRIMARY_VIF_IDX];
+
+	if (vif->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED)
+		return NULL;
+
+	return vif;
+}
+
+void qtnf_mac_iface_comb_free(struct qtnf_wmac *mac)
+{
+	struct ieee80211_iface_combination *comb;
+	int i;
+
+	if (mac->macinfo.if_comb) {
+		for (i = 0; i < mac->macinfo.n_if_comb; i++) {
+			comb = &mac->macinfo.if_comb[i];
+			kfree(comb->limits);
+			comb->limits = NULL;
+		}
+
+		kfree(mac->macinfo.if_comb);
+		mac->macinfo.if_comb = NULL;
+	}
+}
+
+void qtnf_mac_ext_caps_free(struct qtnf_wmac *mac)
+{
+	if (mac->macinfo.extended_capabilities_len) {
+		kfree(mac->macinfo.extended_capabilities);
+		mac->macinfo.extended_capabilities = NULL;
+
+		kfree(mac->macinfo.extended_capabilities_mask);
+		mac->macinfo.extended_capabilities_mask = NULL;
+
+		mac->macinfo.extended_capabilities_len = 0;
+	}
+}
+
+static void qtnf_vif_reset_handler(struct work_struct *work)
+{
+	struct qtnf_vif *vif = container_of(work, struct qtnf_vif, reset_work);
+
+	rtnl_lock();
+
+	if (vif->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED) {
+		rtnl_unlock();
+		return;
+	}
+
+	/* stop tx completely */
+	netif_tx_stop_all_queues(vif->netdev);
+	if (netif_carrier_ok(vif->netdev))
+		netif_carrier_off(vif->netdev);
+
+	qtnf_cfg80211_vif_reset(vif);
+
+	rtnl_unlock();
+}
+
+static void qtnf_mac_init_primary_intf(struct qtnf_wmac *mac)
+{
+	struct qtnf_vif *vif = &mac->iflist[QTNF_PRIMARY_VIF_IDX];
+
+	vif->wdev.iftype = NL80211_IFTYPE_STATION;
+	vif->bss_priority = QTNF_DEF_BSS_PRIORITY;
+	vif->wdev.wiphy = priv_to_wiphy(mac);
+	INIT_WORK(&vif->reset_work, qtnf_vif_reset_handler);
+	vif->cons_tx_timeout_cnt = 0;
+}
+
+static void qtnf_mac_scan_finish(struct qtnf_wmac *mac, bool aborted)
+{
+	struct cfg80211_scan_info info = {
+		.aborted = aborted,
+	};
+
+	mutex_lock(&mac->mac_lock);
+
+	if (mac->scan_req) {
+		cfg80211_scan_done(mac->scan_req, &info);
+		mac->scan_req = NULL;
+	}
+
+	mutex_unlock(&mac->mac_lock);
+}
+
+void qtnf_scan_done(struct qtnf_wmac *mac, bool aborted)
+{
+	cancel_delayed_work_sync(&mac->scan_timeout);
+	qtnf_mac_scan_finish(mac, aborted);
+}
+
+static void qtnf_mac_scan_timeout(struct work_struct *work)
+{
+	struct qtnf_wmac *mac =
+		container_of(work, struct qtnf_wmac, scan_timeout.work);
+
+	pr_warn("MAC%d: scan timed out\n", mac->macid);
+	qtnf_mac_scan_finish(mac, true);
+}
+
+static void qtnf_vif_send_data_high_pri(struct work_struct *work)
+{
+	struct qtnf_vif *vif =
+		container_of(work, struct qtnf_vif, high_pri_tx_work);
+	struct sk_buff *skb;
+
+	if (!vif->netdev ||
+	    vif->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED)
+		return;
+
+	while ((skb = skb_dequeue(&vif->high_pri_tx_queue))) {
+		qtnf_cmd_send_frame(vif, 0, QLINK_FRAME_TX_FLAG_8023,
+				    0, skb->data, skb->len);
+		dev_kfree_skb_any(skb);
+	}
+}
+
+static struct qtnf_wmac *qtnf_core_mac_alloc(struct qtnf_bus *bus,
+					     unsigned int macid)
+{
+	struct platform_device *pdev = NULL;
+	struct qtnf_wmac *mac;
+	struct qtnf_vif *vif;
+	struct wiphy *wiphy;
+	unsigned int i;
+
+	if (bus->hw_info.num_mac > 1) {
+		pdev = platform_device_register_data(bus->dev,
+						     dev_name(bus->dev),
+						     macid, NULL, 0);
+		if (IS_ERR(pdev))
+			return ERR_PTR(-EINVAL);
+	}
+
+	wiphy = qtnf_wiphy_allocate(bus, pdev);
+	if (!wiphy) {
+		if (pdev)
+			platform_device_unregister(pdev);
+		return ERR_PTR(-ENOMEM);
+	}
+
+	mac = wiphy_priv(wiphy);
+
+	mac->macid = macid;
+	mac->pdev = pdev;
+	mac->bus = bus;
+	mutex_init(&mac->mac_lock);
+	INIT_DELAYED_WORK(&mac->scan_timeout, qtnf_mac_scan_timeout);
+
+	for (i = 0; i < QTNF_MAX_INTF; i++) {
+		vif = &mac->iflist[i];
+
+		memset(vif, 0, sizeof(*vif));
+		vif->wdev.iftype = NL80211_IFTYPE_UNSPECIFIED;
+		vif->mac = mac;
+		vif->vifid = i;
+		qtnf_sta_list_init(&vif->sta_list);
+		INIT_WORK(&vif->high_pri_tx_work, qtnf_vif_send_data_high_pri);
+		skb_queue_head_init(&vif->high_pri_tx_queue);
+	}
+
+	qtnf_mac_init_primary_intf(mac);
+	bus->mac[macid] = mac;
+
+	return mac;
+}
+
+static const struct ethtool_ops qtnf_ethtool_ops = {
+	.get_drvinfo = cfg80211_get_drvinfo,
+};
+
+int qtnf_core_net_attach(struct qtnf_wmac *mac, struct qtnf_vif *vif,
+			 const char *name, unsigned char name_assign_type)
+{
+	struct wiphy *wiphy = priv_to_wiphy(mac);
+	struct net_device *dev;
+	void *qdev_vif;
+	int ret;
+
+	dev = alloc_netdev(sizeof(struct qtnf_vif *), name,
+			   name_assign_type, ether_setup);
+	if (!dev)
+		return -ENOMEM;
+
+	vif->netdev = dev;
+
+	dev->netdev_ops = &qtnf_netdev_ops;
+	dev->needs_free_netdev = true;
+	dev_net_set(dev, wiphy_net(wiphy));
+	dev->ieee80211_ptr = &vif->wdev;
+	eth_hw_addr_set(dev, vif->mac_addr);
+	dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
+	dev->watchdog_timeo = QTNF_DEF_WDOG_TIMEOUT;
+	dev->tx_queue_len = 100;
+	dev->ethtool_ops = &qtnf_ethtool_ops;
+	dev->pcpu_stat_type = NETDEV_PCPU_STAT_TSTATS;
+
+	if (qtnf_hwcap_is_set(&mac->bus->hw_info, QLINK_HW_CAPAB_HW_BRIDGE))
+		dev->needed_tailroom = sizeof(struct qtnf_frame_meta_info);
+
+	qdev_vif = netdev_priv(dev);
+	*((void **)qdev_vif) = vif;
+
+	SET_NETDEV_DEV(dev, wiphy_dev(wiphy));
+
+	ret = cfg80211_register_netdevice(dev);
+	if (ret) {
+		free_netdev(dev);
+		vif->netdev = NULL;
+	}
+
+	return ret;
+}
+
+static void qtnf_core_mac_detach(struct qtnf_bus *bus, unsigned int macid)
+{
+	struct qtnf_wmac *mac;
+	struct wiphy *wiphy;
+	struct qtnf_vif *vif;
+	unsigned int i;
+	enum nl80211_band band;
+
+	mac = bus->mac[macid];
+
+	if (!mac)
+		return;
+
+	wiphy = priv_to_wiphy(mac);
+
+	for (i = 0; i < QTNF_MAX_INTF; i++) {
+		vif = &mac->iflist[i];
+		rtnl_lock();
+		if (vif->netdev &&
+		    vif->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED) {
+			qtnf_virtual_intf_cleanup(vif->netdev);
+			qtnf_del_virtual_intf(wiphy, &vif->wdev);
+		}
+		rtnl_unlock();
+		qtnf_sta_list_free(&vif->sta_list);
+	}
+
+	if (mac->wiphy_registered)
+		wiphy_unregister(wiphy);
+
+	for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; ++band) {
+		if (!wiphy->bands[band])
+			continue;
+
+		kfree((__force void *)wiphy->bands[band]->iftype_data);
+		wiphy->bands[band]->n_iftype_data = 0;
+
+		kfree(wiphy->bands[band]->channels);
+		wiphy->bands[band]->n_channels = 0;
+
+		kfree(wiphy->bands[band]);
+		wiphy->bands[band] = NULL;
+	}
+
+	platform_device_unregister(mac->pdev);
+	qtnf_mac_iface_comb_free(mac);
+	qtnf_mac_ext_caps_free(mac);
+	kfree(mac->macinfo.wowlan);
+	kfree(mac->rd);
+	mac->rd = NULL;
+	wiphy_free(wiphy);
+	bus->mac[macid] = NULL;
+}
+
+static int qtnf_core_mac_attach(struct qtnf_bus *bus, unsigned int macid)
+{
+	struct qtnf_wmac *mac;
+	struct qtnf_vif *vif;
+	int ret;
+
+	if (!(bus->hw_info.mac_bitmap & BIT(macid))) {
+		pr_info("MAC%u is not active in FW\n", macid);
+		return 0;
+	}
+
+	mac = qtnf_core_mac_alloc(bus, macid);
+	if (IS_ERR(mac)) {
+		pr_err("MAC%u allocation failed\n", macid);
+		return PTR_ERR(mac);
+	}
+
+	vif = qtnf_mac_get_base_vif(mac);
+	if (!vif) {
+		pr_err("MAC%u: primary VIF is not ready\n", macid);
+		ret = -EFAULT;
+		goto error;
+	}
+
+	ret = qtnf_cmd_send_add_intf(vif, vif->wdev.iftype,
+				     vif->wdev.use_4addr, vif->mac_addr);
+	if (ret) {
+		pr_err("MAC%u: failed to add VIF\n", macid);
+		goto error;
+	}
+
+	ret = qtnf_cmd_get_mac_info(mac);
+	if (ret) {
+		pr_err("MAC%u: failed to get MAC info\n", macid);
+		goto error_del_vif;
+	}
+
+	/* Use MAC address of the first active radio as a unique device ID */
+	if (is_zero_ether_addr(mac->bus->hw_id))
+		ether_addr_copy(mac->bus->hw_id, mac->macaddr);
+
+	ret = qtnf_mac_init_bands(mac);
+	if (ret) {
+		pr_err("MAC%u: failed to init bands\n", macid);
+		goto error_del_vif;
+	}
+
+	ret = qtnf_wiphy_register(&bus->hw_info, mac);
+	if (ret) {
+		pr_err("MAC%u: wiphy registration failed\n", macid);
+		goto error_del_vif;
+	}
+
+	mac->wiphy_registered = 1;
+
+	rtnl_lock();
+	wiphy_lock(priv_to_wiphy(mac));
+	ret = qtnf_core_net_attach(mac, vif, "wlan%d", NET_NAME_ENUM);
+	wiphy_unlock(priv_to_wiphy(mac));
+	rtnl_unlock();
+
+	if (ret) {
+		pr_err("MAC%u: failed to attach netdev\n", macid);
+		goto error_del_vif;
+	}
+
+	if (qtnf_hwcap_is_set(&bus->hw_info, QLINK_HW_CAPAB_HW_BRIDGE)) {
+		ret = qtnf_cmd_netdev_changeupper(vif, vif->netdev->ifindex);
+		if (ret)
+			goto error;
+	}
+
+	pr_debug("MAC%u initialized\n", macid);
+
+	return 0;
+
+error_del_vif:
+	qtnf_cmd_send_del_intf(vif);
+	vif->wdev.iftype = NL80211_IFTYPE_UNSPECIFIED;
+error:
+	qtnf_core_mac_detach(bus, macid);
+	return ret;
+}
+
+bool qtnf_netdev_is_qtn(const struct net_device *ndev)
+{
+	return ndev->netdev_ops == &qtnf_netdev_ops;
+}
+
+static int qtnf_check_br_ports(struct net_device *dev,
+			       struct netdev_nested_priv *priv)
+{
+	struct net_device *ndev = (struct net_device *)priv->data;
+
+	if (dev != ndev && netdev_port_same_parent_id(dev, ndev))
+		return -ENOTSUPP;
+
+	return 0;
+}
+
+static int qtnf_core_netdevice_event(struct notifier_block *nb,
+				     unsigned long event, void *ptr)
+{
+	struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
+	const struct netdev_notifier_changeupper_info *info;
+	struct netdev_nested_priv priv = {
+		.data = (void *)ndev,
+	};
+	struct net_device *brdev;
+	struct qtnf_vif *vif;
+	struct qtnf_bus *bus;
+	int br_domain;
+	int ret = 0;
+
+	if (!qtnf_netdev_is_qtn(ndev))
+		return NOTIFY_DONE;
+
+	if (!net_eq(dev_net(ndev), &init_net))
+		return NOTIFY_OK;
+
+	vif = qtnf_netdev_get_priv(ndev);
+	bus = vif->mac->bus;
+
+	switch (event) {
+	case NETDEV_CHANGEUPPER:
+		info = ptr;
+		brdev = info->upper_dev;
+
+		if (!netif_is_bridge_master(brdev))
+			break;
+
+		pr_debug("[VIF%u.%u] change bridge: %s %s\n",
+			 vif->mac->macid, vif->vifid, netdev_name(brdev),
+			 info->linking ? "add" : "del");
+
+		if (IS_ENABLED(CONFIG_NET_SWITCHDEV) &&
+		    qtnf_hwcap_is_set(&bus->hw_info,
+				      QLINK_HW_CAPAB_HW_BRIDGE)) {
+			if (info->linking)
+				br_domain = brdev->ifindex;
+			else
+				br_domain = ndev->ifindex;
+
+			ret = qtnf_cmd_netdev_changeupper(vif, br_domain);
+		} else {
+			ret = netdev_walk_all_lower_dev(brdev,
+							qtnf_check_br_ports,
+							&priv);
+		}
+
+		break;
+	default:
+		break;
+	}
+
+	return notifier_from_errno(ret);
+}
+
+int qtnf_core_attach(struct qtnf_bus *bus)
+{
+	unsigned int i;
+	int ret;
+
+	qtnf_trans_init(bus);
+	qtnf_bus_data_rx_start(bus);
+
+	bus->workqueue = alloc_ordered_workqueue("QTNF_BUS", 0);
+	if (!bus->workqueue) {
+		pr_err("failed to alloc main workqueue\n");
+		ret = -ENOMEM;
+		goto error;
+	}
+
+	bus->hprio_workqueue = alloc_workqueue("QTNF_HPRI",
+					       WQ_HIGHPRI | WQ_PERCPU, 0);
+	if (!bus->hprio_workqueue) {
+		pr_err("failed to alloc high prio workqueue\n");
+		ret = -ENOMEM;
+		goto error;
+	}
+
+	INIT_WORK(&bus->event_work, qtnf_event_work_handler);
+
+	ret = qtnf_cmd_send_init_fw(bus);
+	if (ret) {
+		pr_err("failed to init FW: %d\n", ret);
+		goto error;
+	}
+
+	if (QLINK_VER_MAJOR(bus->hw_info.ql_proto_ver) !=
+	    QLINK_PROTO_VER_MAJOR) {
+		pr_err("qlink driver vs FW version mismatch: %u vs %u\n",
+		       QLINK_PROTO_VER_MAJOR,
+		       QLINK_VER_MAJOR(bus->hw_info.ql_proto_ver));
+		ret = -EPROTONOSUPPORT;
+		goto error;
+	}
+
+	bus->fw_state = QTNF_FW_STATE_ACTIVE;
+	ret = qtnf_cmd_get_hw_info(bus);
+	if (ret) {
+		pr_err("failed to get HW info: %d\n", ret);
+		goto error;
+	}
+
+	if (qtnf_hwcap_is_set(&bus->hw_info, QLINK_HW_CAPAB_HW_BRIDGE) &&
+	    bus->bus_ops->data_tx_use_meta_set)
+		bus->bus_ops->data_tx_use_meta_set(bus, true);
+
+	if (bus->hw_info.num_mac > QTNF_MAX_MAC) {
+		pr_err("no support for number of MACs=%u\n",
+		       bus->hw_info.num_mac);
+		ret = -ERANGE;
+		goto error;
+	}
+
+	for (i = 0; i < bus->hw_info.num_mac; i++) {
+		ret = qtnf_core_mac_attach(bus, i);
+
+		if (ret) {
+			pr_err("MAC%u: attach failed: %d\n", i, ret);
+			goto error;
+		}
+	}
+
+	bus->netdev_nb.notifier_call = qtnf_core_netdevice_event;
+	ret = register_netdevice_notifier(&bus->netdev_nb);
+	if (ret) {
+		pr_err("failed to register netdev notifier: %d\n", ret);
+		goto error;
+	}
+
+	bus->fw_state = QTNF_FW_STATE_RUNNING;
+	return 0;
+
+error:
+	qtnf_core_detach(bus);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(qtnf_core_attach);
+
+void qtnf_core_detach(struct qtnf_bus *bus)
+{
+	unsigned int macid;
+
+	unregister_netdevice_notifier(&bus->netdev_nb);
+	qtnf_bus_data_rx_stop(bus);
+
+	for (macid = 0; macid < QTNF_MAX_MAC; macid++)
+		qtnf_core_mac_detach(bus, macid);
+
+	if (qtnf_fw_is_up(bus))
+		qtnf_cmd_send_deinit_fw(bus);
+
+	bus->fw_state = QTNF_FW_STATE_DETACHED;
+
+	if (bus->workqueue) {
+		destroy_workqueue(bus->workqueue);
+		bus->workqueue = NULL;
+	}
+
+	if (bus->hprio_workqueue) {
+		destroy_workqueue(bus->hprio_workqueue);
+		bus->hprio_workqueue = NULL;
+	}
+
+	qtnf_trans_free(bus);
+}
+EXPORT_SYMBOL_GPL(qtnf_core_detach);
+
+static inline int qtnf_is_frame_meta_magic_valid(struct qtnf_frame_meta_info *m)
+{
+	return m->magic_s == HBM_FRAME_META_MAGIC_PATTERN_S &&
+		m->magic_e == HBM_FRAME_META_MAGIC_PATTERN_E;
+}
+
+struct net_device *qtnf_classify_skb(struct qtnf_bus *bus, struct sk_buff *skb)
+{
+	struct qtnf_frame_meta_info *meta;
+	struct net_device *ndev = NULL;
+	struct qtnf_wmac *mac;
+	struct qtnf_vif *vif;
+
+	if (unlikely(bus->fw_state != QTNF_FW_STATE_RUNNING))
+		return NULL;
+
+	meta = (struct qtnf_frame_meta_info *)
+		(skb_tail_pointer(skb) - sizeof(*meta));
+
+	if (unlikely(!qtnf_is_frame_meta_magic_valid(meta))) {
+		pr_err_ratelimited("invalid magic 0x%x:0x%x\n",
+				   meta->magic_s, meta->magic_e);
+		goto out;
+	}
+
+	if (unlikely(meta->macid >= QTNF_MAX_MAC)) {
+		pr_err_ratelimited("invalid mac(%u)\n", meta->macid);
+		goto out;
+	}
+
+	if (unlikely(meta->ifidx >= QTNF_MAX_INTF)) {
+		pr_err_ratelimited("invalid vif(%u)\n", meta->ifidx);
+		goto out;
+	}
+
+	mac = bus->mac[meta->macid];
+
+	if (unlikely(!mac)) {
+		pr_err_ratelimited("mac(%d) does not exist\n", meta->macid);
+		goto out;
+	}
+
+	vif = &mac->iflist[meta->ifidx];
+
+	if (unlikely(vif->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED)) {
+		pr_err_ratelimited("vif(%u) does not exists\n", meta->ifidx);
+		goto out;
+	}
+
+	ndev = vif->netdev;
+
+	if (unlikely(!ndev)) {
+		pr_err_ratelimited("netdev for wlan%u.%u does not exists\n",
+				   meta->macid, meta->ifidx);
+		goto out;
+	}
+
+	__skb_trim(skb, skb->len - sizeof(*meta));
+	/* Firmware always handles packets that require flooding */
+	qtnfmac_switch_mark_skb_flooded(skb);
+
+out:
+	return ndev;
+}
+EXPORT_SYMBOL_GPL(qtnf_classify_skb);
+
+void qtnf_wake_all_queues(struct net_device *ndev)
+{
+	struct qtnf_vif *vif = qtnf_netdev_get_priv(ndev);
+	struct qtnf_wmac *mac;
+	struct qtnf_bus *bus;
+	int macid;
+	int i;
+
+	if (unlikely(!vif || !vif->mac || !vif->mac->bus))
+		return;
+
+	bus = vif->mac->bus;
+
+	for (macid = 0; macid < QTNF_MAX_MAC; macid++) {
+		if (!(bus->hw_info.mac_bitmap & BIT(macid)))
+			continue;
+
+		mac = bus->mac[macid];
+		for (i = 0; i < QTNF_MAX_INTF; i++) {
+			vif = &mac->iflist[i];
+			if (vif->netdev && netif_queue_stopped(vif->netdev))
+				netif_tx_wake_all_queues(vif->netdev);
+		}
+	}
+}
+EXPORT_SYMBOL_GPL(qtnf_wake_all_queues);
+
+struct dentry *qtnf_get_debugfs_dir(void)
+{
+	return qtnf_debugfs_dir;
+}
+EXPORT_SYMBOL_GPL(qtnf_get_debugfs_dir);
+
+static int __init qtnf_core_register(void)
+{
+	qtnf_debugfs_dir = debugfs_create_dir(KBUILD_MODNAME, NULL);
+
+	if (IS_ERR(qtnf_debugfs_dir))
+		qtnf_debugfs_dir = NULL;
+
+	return 0;
+}
+
+static void __exit qtnf_core_exit(void)
+{
+	debugfs_remove(qtnf_debugfs_dir);
+}
+
+module_init(qtnf_core_register);
+module_exit(qtnf_core_exit);
+
+MODULE_AUTHOR("Quantenna Communications");
+MODULE_DESCRIPTION("Quantenna 802.11 wireless LAN FullMAC driver.");
+MODULE_LICENSE("GPL");

linux-7.2.3/drivers/net/wireless/quantenna/qtnfmac/core.h

@@ -0,0 +1,159 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Copyright (c) 2015-2016 Quantenna Communications. All rights reserved. */
+
+#ifndef _QTN_FMAC_CORE_H_
+#define _QTN_FMAC_CORE_H_
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/semaphore.h>
+#include <linux/ip.h>
+#include <linux/skbuff.h>
+#include <linux/if_arp.h>
+#include <linux/etherdevice.h>
+#include <net/sock.h>
+#include <net/cfg80211.h>
+#include <linux/vmalloc.h>
+#include <linux/firmware.h>
+#include <linux/ctype.h>
+#include <linux/workqueue.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+
+#include "qlink.h"
+#include "trans.h"
+#include "qlink_util.h"
+
+#undef pr_fmt
+#define pr_fmt(fmt)	KBUILD_MODNAME ": %s: " fmt, __func__
+
+#define QTNF_MAX_VSIE_LEN		255
+#define QTNF_MAX_INTF			8
+#define QTNF_MAX_EVENT_QUEUE_LEN	255
+#define QTNF_SCAN_TIMEOUT_SEC		15
+
+#define QTNF_DEF_BSS_PRIORITY		0
+#define QTNF_DEF_WDOG_TIMEOUT		5
+#define QTNF_TX_TIMEOUT_TRSHLD		100
+
+extern const struct net_device_ops qtnf_netdev_ops;
+
+struct qtnf_bus;
+struct qtnf_vif;
+
+struct qtnf_sta_node {
+	struct list_head list;
+	u8 mac_addr[ETH_ALEN];
+};
+
+struct qtnf_sta_list {
+	struct list_head head;
+	atomic_t size;
+};
+
+struct qtnf_vif {
+	struct wireless_dev wdev;
+	u8 bssid[ETH_ALEN];
+	u8 mac_addr[ETH_ALEN];
+	u8 vifid;
+	u8 bss_priority;
+	u8 bss_status;
+	u16 mgmt_frames_bitmask;
+	struct net_device *netdev;
+	struct qtnf_wmac *mac;
+
+	struct work_struct reset_work;
+	struct work_struct high_pri_tx_work;
+	struct sk_buff_head high_pri_tx_queue;
+	struct qtnf_sta_list sta_list;
+	unsigned long cons_tx_timeout_cnt;
+	int generation;
+};
+
+struct qtnf_mac_info {
+	u8 bands_cap;
+	u8 num_tx_chain;
+	u8 num_rx_chain;
+	u16 max_ap_assoc_sta;
+	u32 frag_thr;
+	u32 rts_thr;
+	u8 lretry_limit;
+	u8 sretry_limit;
+	u8 coverage_class;
+	u8 radar_detect_widths;
+	u8 max_scan_ssids;
+	u16 max_acl_mac_addrs;
+	struct ieee80211_ht_cap ht_cap_mod_mask;
+	struct ieee80211_vht_cap vht_cap_mod_mask;
+	struct ieee80211_iface_combination *if_comb;
+	size_t n_if_comb;
+	u8 *extended_capabilities;
+	u8 *extended_capabilities_mask;
+	u8 extended_capabilities_len;
+	struct wiphy_wowlan_support *wowlan;
+};
+
+struct qtnf_wmac {
+	u8 macid;
+	u8 wiphy_registered;
+	u8 macaddr[ETH_ALEN];
+	struct qtnf_bus *bus;
+	struct qtnf_mac_info macinfo;
+	struct qtnf_vif iflist[QTNF_MAX_INTF];
+	struct cfg80211_scan_request *scan_req;
+	struct mutex mac_lock;	/* lock during wmac specific ops */
+	struct delayed_work scan_timeout;
+	struct ieee80211_regdomain *rd;
+	struct platform_device *pdev;
+};
+
+struct qtnf_hw_info {
+	u32 ql_proto_ver;
+	u8 num_mac;
+	u8 mac_bitmap;
+	u32 fw_ver;
+	u8 total_tx_chain;
+	u8 total_rx_chain;
+	char fw_version[ETHTOOL_FWVERS_LEN];
+	u32 hw_version;
+	u8 hw_capab[QLINK_HW_CAPAB_NUM / BITS_PER_BYTE + 1];
+};
+
+struct qtnf_vif *qtnf_mac_get_free_vif(struct qtnf_wmac *mac);
+struct qtnf_vif *qtnf_mac_get_base_vif(struct qtnf_wmac *mac);
+void qtnf_mac_iface_comb_free(struct qtnf_wmac *mac);
+void qtnf_mac_ext_caps_free(struct qtnf_wmac *mac);
+bool qtnf_slave_radar_get(void);
+bool qtnf_dfs_offload_get(void);
+struct wiphy *qtnf_wiphy_allocate(struct qtnf_bus *bus,
+				  struct platform_device *pdev);
+int qtnf_core_net_attach(struct qtnf_wmac *mac, struct qtnf_vif *priv,
+			 const char *name, unsigned char name_assign_type);
+void qtnf_main_work_queue(struct work_struct *work);
+int qtnf_cmd_send_update_phy_params(struct qtnf_wmac *mac, u32 changed);
+
+struct qtnf_wmac *qtnf_core_get_mac(const struct qtnf_bus *bus, u8 macid);
+struct net_device *qtnf_classify_skb(struct qtnf_bus *bus, struct sk_buff *skb);
+void qtnf_wake_all_queues(struct net_device *ndev);
+
+void qtnf_virtual_intf_cleanup(struct net_device *ndev);
+
+void qtnf_netdev_updown(struct net_device *ndev, bool up);
+void qtnf_scan_done(struct qtnf_wmac *mac, bool aborted);
+struct dentry *qtnf_get_debugfs_dir(void);
+bool qtnf_netdev_is_qtn(const struct net_device *ndev);
+
+static inline struct qtnf_vif *qtnf_netdev_get_priv(struct net_device *dev)
+{
+	return *((void **)netdev_priv(dev));
+}
+
+static inline bool qtnf_hwcap_is_set(const struct qtnf_hw_info *info,
+				     unsigned int bit)
+{
+	return qtnf_utils_is_bit_set(info->hw_capab, bit,
+				     sizeof(info->hw_capab));
+}
+
+#endif /* _QTN_FMAC_CORE_H_ */

linux-7.2.3/drivers/net/wireless/quantenna/qtnfmac/debug.c

@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Copyright (c) 2015-2016 Quantenna Communications. All rights reserved. */
+
+#include "debug.h"
+
+void qtnf_debugfs_init(struct qtnf_bus *bus, const char *name)
+{
+	struct dentry *parent = qtnf_get_debugfs_dir();
+
+	bus->dbg_dir = debugfs_create_dir(name, parent);
+}
+
+void qtnf_debugfs_remove(struct qtnf_bus *bus)
+{
+	debugfs_remove_recursive(bus->dbg_dir);
+	bus->dbg_dir = NULL;
+}
+
+void qtnf_debugfs_add_entry(struct qtnf_bus *bus, const char *name,
+			    int (*fn)(struct seq_file *seq, void *data))
+{
+	debugfs_create_devm_seqfile(bus->dev, name, bus->dbg_dir, fn);
+}

linux-7.2.3/drivers/net/wireless/quantenna/qtnfmac/debug.h

@@ -0,0 +1,37 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Copyright (c) 2015-2016 Quantenna Communications. All rights reserved. */
+
+#ifndef _QTN_FMAC_DEBUG_H_
+#define _QTN_FMAC_DEBUG_H_
+
+#include <linux/debugfs.h>
+
+#include "core.h"
+#include "bus.h"
+
+#ifdef CONFIG_DEBUG_FS
+
+void qtnf_debugfs_init(struct qtnf_bus *bus, const char *name);
+void qtnf_debugfs_remove(struct qtnf_bus *bus);
+void qtnf_debugfs_add_entry(struct qtnf_bus *bus, const char *name,
+			    int (*fn)(struct seq_file *seq, void *data));
+
+#else
+
+static inline void qtnf_debugfs_init(struct qtnf_bus *bus, const char *name)
+{
+}
+
+static inline void qtnf_debugfs_remove(struct qtnf_bus *bus)
+{
+}
+
+static inline void
+qtnf_debugfs_add_entry(struct qtnf_bus *bus, const char *name,
+		       int (*fn)(struct seq_file *seq, void *data))
+{
+}
+
+#endif /* CONFIG_DEBUG_FS */
+
+#endif /* _QTN_FMAC_DEBUG_H_ */

linux-7.2.3/drivers/net/wireless/quantenna/qtnfmac/event.c

@@ -0,0 +1,797 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Copyright (c) 2015-2016 Quantenna Communications. All rights reserved. */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/nospec.h>
+
+#include "cfg80211.h"
+#include "core.h"
+#include "qlink.h"
+#include "bus.h"
+#include "trans.h"
+#include "util.h"
+#include "event.h"
+#include "qlink_util.h"
+
+static int
+qtnf_event_handle_sta_assoc(struct qtnf_wmac *mac, struct qtnf_vif *vif,
+			    const struct qlink_event_sta_assoc *sta_assoc,
+			    u16 len)
+{
+	const u8 *sta_addr;
+	u16 frame_control;
+	struct station_info *sinfo;
+	size_t payload_len;
+	u16 tlv_type;
+	u16 tlv_value_len;
+	const struct qlink_tlv_hdr *tlv;
+	int ret = 0;
+
+	if (unlikely(len < sizeof(*sta_assoc))) {
+		pr_err("VIF%u.%u: payload is too short (%u < %zu)\n",
+		       mac->macid, vif->vifid, len, sizeof(*sta_assoc));
+		return -EINVAL;
+	}
+
+	if (vif->wdev.iftype != NL80211_IFTYPE_AP) {
+		pr_err("VIF%u.%u: STA_ASSOC event when not in AP mode\n",
+		       mac->macid, vif->vifid);
+		return -EPROTO;
+	}
+
+	sinfo = kzalloc_obj(*sinfo);
+	if (!sinfo)
+		return -ENOMEM;
+
+	sta_addr = sta_assoc->sta_addr;
+	frame_control = le16_to_cpu(sta_assoc->frame_control);
+
+	pr_debug("VIF%u.%u: MAC:%pM FC:%x\n", mac->macid, vif->vifid, sta_addr,
+		 frame_control);
+
+	qtnf_sta_list_add(vif, sta_addr);
+
+	sinfo->assoc_req_ies = NULL;
+	sinfo->assoc_req_ies_len = 0;
+	sinfo->generation = vif->generation;
+
+	payload_len = len - sizeof(*sta_assoc);
+
+	qlink_for_each_tlv(tlv, sta_assoc->ies, payload_len) {
+		tlv_type = le16_to_cpu(tlv->type);
+		tlv_value_len = le16_to_cpu(tlv->len);
+
+		if (tlv_type == QTN_TLV_ID_IE_SET) {
+			const struct qlink_tlv_ie_set *ie_set;
+			unsigned int ie_len;
+
+			if (tlv_value_len <
+			    (sizeof(*ie_set) - sizeof(ie_set->hdr))) {
+				ret = -EINVAL;
+				goto out;
+			}
+
+			ie_set = (const struct qlink_tlv_ie_set *)tlv;
+			ie_len = tlv_value_len -
+				(sizeof(*ie_set) - sizeof(ie_set->hdr));
+
+			if (ie_set->type == QLINK_IE_SET_ASSOC_REQ && ie_len) {
+				sinfo->assoc_req_ies = ie_set->ie_data;
+				sinfo->assoc_req_ies_len = ie_len;
+			}
+		}
+	}
+
+	if (!qlink_tlv_parsing_ok(tlv, sta_assoc->ies, payload_len)) {
+		pr_err("Malformed TLV buffer\n");
+		ret = -EINVAL;
+		goto out;
+	}
+
+	cfg80211_new_sta(vif->netdev->ieee80211_ptr, sta_assoc->sta_addr,
+			 sinfo, GFP_KERNEL);
+
+out:
+	kfree(sinfo);
+	return ret;
+}
+
+static int
+qtnf_event_handle_sta_deauth(struct qtnf_wmac *mac, struct qtnf_vif *vif,
+			     const struct qlink_event_sta_deauth *sta_deauth,
+			     u16 len)
+{
+	const u8 *sta_addr;
+	u16 reason;
+
+	if (unlikely(len < sizeof(*sta_deauth))) {
+		pr_err("VIF%u.%u: payload is too short (%u < %zu)\n",
+		       mac->macid, vif->vifid, len,
+		       sizeof(struct qlink_event_sta_deauth));
+		return -EINVAL;
+	}
+
+	if (vif->wdev.iftype != NL80211_IFTYPE_AP) {
+		pr_err("VIF%u.%u: STA_DEAUTH event when not in AP mode\n",
+		       mac->macid, vif->vifid);
+		return -EPROTO;
+	}
+
+	sta_addr = sta_deauth->sta_addr;
+	reason = le16_to_cpu(sta_deauth->reason);
+
+	pr_debug("VIF%u.%u: MAC:%pM reason:%x\n", mac->macid, vif->vifid,
+		 sta_addr, reason);
+
+	if (qtnf_sta_list_del(vif, sta_addr))
+		cfg80211_del_sta(&vif->wdev, sta_deauth->sta_addr,
+				 GFP_KERNEL);
+
+	return 0;
+}
+
+static int
+qtnf_event_handle_bss_join(struct qtnf_vif *vif,
+			   const struct qlink_event_bss_join *join_info,
+			   u16 len)
+{
+	struct wiphy *wiphy = priv_to_wiphy(vif->mac);
+	enum ieee80211_statuscode status = le16_to_cpu(join_info->status);
+	struct cfg80211_chan_def chandef;
+	struct cfg80211_bss *bss = NULL;
+	u8 *ie = NULL;
+	size_t payload_len;
+	u16 tlv_type;
+	u16 tlv_value_len;
+	const struct qlink_tlv_hdr *tlv;
+	const u8 *rsp_ies = NULL;
+	size_t rsp_ies_len = 0;
+
+	if (unlikely(len < sizeof(*join_info))) {
+		pr_err("VIF%u.%u: payload is too short (%u < %zu)\n",
+		       vif->mac->macid, vif->vifid, len,
+		       sizeof(struct qlink_event_bss_join));
+		return -EINVAL;
+	}
+
+	if (vif->wdev.iftype != NL80211_IFTYPE_STATION) {
+		pr_err("VIF%u.%u: BSS_JOIN event when not in STA mode\n",
+		       vif->mac->macid, vif->vifid);
+		return -EPROTO;
+	}
+
+	pr_debug("VIF%u.%u: BSSID:%pM chan:%u status:%u\n",
+		 vif->mac->macid, vif->vifid, join_info->bssid,
+		 le16_to_cpu(join_info->chan.chan.center_freq), status);
+
+	if (status != WLAN_STATUS_SUCCESS)
+		goto done;
+
+	qlink_chandef_q2cfg(wiphy, &join_info->chan, &chandef);
+	if (!cfg80211_chandef_valid(&chandef)) {
+		pr_warn("MAC%u.%u: bad channel freq=%u cf1=%u cf2=%u bw=%u\n",
+			vif->mac->macid, vif->vifid,
+			chandef.chan ? chandef.chan->center_freq : 0,
+			chandef.center_freq1,
+			chandef.center_freq2,
+			chandef.width);
+		status = WLAN_STATUS_UNSPECIFIED_FAILURE;
+		goto done;
+	}
+
+	bss = cfg80211_get_bss(wiphy, chandef.chan, join_info->bssid,
+			       NULL, 0, IEEE80211_BSS_TYPE_ESS,
+			       IEEE80211_PRIVACY_ANY);
+	if (!bss) {
+		pr_warn("VIF%u.%u: add missing BSS:%pM chan:%u\n",
+			vif->mac->macid, vif->vifid,
+			join_info->bssid, chandef.chan->hw_value);
+
+		if (!vif->wdev.u.client.ssid_len) {
+			pr_warn("VIF%u.%u: SSID unknown for BSS:%pM\n",
+				vif->mac->macid, vif->vifid,
+				join_info->bssid);
+			status = WLAN_STATUS_UNSPECIFIED_FAILURE;
+			goto done;
+		}
+
+		ie = kzalloc(2 + vif->wdev.u.client.ssid_len, GFP_KERNEL);
+		if (!ie) {
+			pr_warn("VIF%u.%u: IE alloc failed for BSS:%pM\n",
+				vif->mac->macid, vif->vifid,
+				join_info->bssid);
+			status = WLAN_STATUS_UNSPECIFIED_FAILURE;
+			goto done;
+		}
+
+		ie[0] = WLAN_EID_SSID;
+		ie[1] = vif->wdev.u.client.ssid_len;
+		memcpy(ie + 2, vif->wdev.u.client.ssid,
+		       vif->wdev.u.client.ssid_len);
+
+		bss = cfg80211_inform_bss(wiphy, chandef.chan,
+					  CFG80211_BSS_FTYPE_UNKNOWN,
+					  join_info->bssid, 0,
+					  WLAN_CAPABILITY_ESS, 100,
+					  ie, 2 + vif->wdev.u.client.ssid_len,
+					  0, GFP_KERNEL);
+		if (!bss) {
+			pr_warn("VIF%u.%u: can't connect to unknown BSS: %pM\n",
+				vif->mac->macid, vif->vifid,
+				join_info->bssid);
+			status = WLAN_STATUS_UNSPECIFIED_FAILURE;
+			goto done;
+		}
+	}
+
+	payload_len = len - sizeof(*join_info);
+
+	qlink_for_each_tlv(tlv, join_info->ies, payload_len) {
+		tlv_type = le16_to_cpu(tlv->type);
+		tlv_value_len = le16_to_cpu(tlv->len);
+
+		if (tlv_type == QTN_TLV_ID_IE_SET) {
+			const struct qlink_tlv_ie_set *ie_set;
+			unsigned int ie_len;
+
+			if (tlv_value_len <
+			    (sizeof(*ie_set) - sizeof(ie_set->hdr))) {
+				pr_warn("invalid IE_SET TLV\n");
+				status = WLAN_STATUS_UNSPECIFIED_FAILURE;
+				goto done;
+			}
+
+			ie_set = (const struct qlink_tlv_ie_set *)tlv;
+			ie_len = tlv_value_len -
+				(sizeof(*ie_set) - sizeof(ie_set->hdr));
+
+			switch (ie_set->type) {
+			case QLINK_IE_SET_ASSOC_RESP:
+				if (ie_len) {
+					rsp_ies = ie_set->ie_data;
+					rsp_ies_len = ie_len;
+				}
+				break;
+			default:
+				pr_warn("unexpected IE type: %u\n",
+					ie_set->type);
+				break;
+			}
+		}
+	}
+
+	if (!qlink_tlv_parsing_ok(tlv, join_info->ies, payload_len))
+		pr_warn("Malformed TLV buffer\n");
+done:
+	cfg80211_connect_result(vif->netdev, join_info->bssid, NULL, 0, rsp_ies,
+				rsp_ies_len, status, GFP_KERNEL);
+	if (bss) {
+		if (!ether_addr_equal(vif->bssid, join_info->bssid))
+			ether_addr_copy(vif->bssid, join_info->bssid);
+		cfg80211_put_bss(wiphy, bss);
+	}
+
+	if (status == WLAN_STATUS_SUCCESS)
+		netif_carrier_on(vif->netdev);
+
+	kfree(ie);
+	return 0;
+}
+
+static int
+qtnf_event_handle_bss_leave(struct qtnf_vif *vif,
+			    const struct qlink_event_bss_leave *leave_info,
+			    u16 len)
+{
+	if (unlikely(len < sizeof(*leave_info))) {
+		pr_err("VIF%u.%u: payload is too short (%u < %zu)\n",
+		       vif->mac->macid, vif->vifid, len,
+		       sizeof(struct qlink_event_bss_leave));
+		return -EINVAL;
+	}
+
+	if (vif->wdev.iftype != NL80211_IFTYPE_STATION) {
+		pr_err("VIF%u.%u: BSS_LEAVE event when not in STA mode\n",
+		       vif->mac->macid, vif->vifid);
+		return -EPROTO;
+	}
+
+	pr_debug("VIF%u.%u: disconnected\n", vif->mac->macid, vif->vifid);
+
+	cfg80211_disconnected(vif->netdev, le16_to_cpu(leave_info->reason),
+			      NULL, 0, 0, GFP_KERNEL);
+	netif_carrier_off(vif->netdev);
+
+	return 0;
+}
+
+static int
+qtnf_event_handle_mgmt_received(struct qtnf_vif *vif,
+				const struct qlink_event_rxmgmt *rxmgmt,
+				u16 len)
+{
+	const size_t min_len = sizeof(*rxmgmt) +
+			       sizeof(struct ieee80211_hdr_3addr);
+	const struct ieee80211_hdr_3addr *frame = (void *)rxmgmt->frame_data;
+	const u16 frame_len = len - sizeof(*rxmgmt);
+	enum nl80211_rxmgmt_flags flags = 0;
+
+	if (unlikely(len < min_len)) {
+		pr_err("VIF%u.%u: payload is too short (%u < %zu)\n",
+		       vif->mac->macid, vif->vifid, len, min_len);
+		return -EINVAL;
+	}
+
+	if (le32_to_cpu(rxmgmt->flags) & QLINK_RXMGMT_FLAG_ANSWERED)
+		flags |= NL80211_RXMGMT_FLAG_ANSWERED;
+
+	pr_debug("%s LEN:%u FC:%.4X SA:%pM\n", vif->netdev->name, frame_len,
+		 le16_to_cpu(frame->frame_control), frame->addr2);
+
+	cfg80211_rx_mgmt(&vif->wdev, le32_to_cpu(rxmgmt->freq), rxmgmt->sig_dbm,
+			 rxmgmt->frame_data, frame_len, flags);
+
+	return 0;
+}
+
+static int
+qtnf_event_handle_scan_results(struct qtnf_vif *vif,
+			       const struct qlink_event_scan_result *sr,
+			       u16 len)
+{
+	struct cfg80211_bss *bss;
+	struct ieee80211_channel *channel;
+	struct wiphy *wiphy = priv_to_wiphy(vif->mac);
+	enum cfg80211_bss_frame_type frame_type = CFG80211_BSS_FTYPE_UNKNOWN;
+	size_t payload_len;
+	u16 tlv_type;
+	u16 tlv_value_len;
+	const struct qlink_tlv_hdr *tlv;
+	const u8 *ies = NULL;
+	size_t ies_len = 0;
+
+	if (len < sizeof(*sr)) {
+		pr_err("VIF%u.%u: payload is too short\n", vif->mac->macid,
+		       vif->vifid);
+		return -EINVAL;
+	}
+
+	channel = ieee80211_get_channel(wiphy, le16_to_cpu(sr->freq));
+	if (!channel) {
+		pr_err("VIF%u.%u: channel at %u MHz not found\n",
+		       vif->mac->macid, vif->vifid, le16_to_cpu(sr->freq));
+		return -EINVAL;
+	}
+
+	payload_len = len - sizeof(*sr);
+
+	qlink_for_each_tlv(tlv, sr->payload, payload_len) {
+		tlv_type = le16_to_cpu(tlv->type);
+		tlv_value_len = le16_to_cpu(tlv->len);
+
+		if (tlv_type == QTN_TLV_ID_IE_SET) {
+			const struct qlink_tlv_ie_set *ie_set;
+			unsigned int ie_len;
+
+			if (tlv_value_len <
+			    (sizeof(*ie_set) - sizeof(ie_set->hdr)))
+				return -EINVAL;
+
+			ie_set = (const struct qlink_tlv_ie_set *)tlv;
+			ie_len = tlv_value_len -
+				(sizeof(*ie_set) - sizeof(ie_set->hdr));
+
+			switch (ie_set->type) {
+			case QLINK_IE_SET_BEACON_IES:
+				frame_type = CFG80211_BSS_FTYPE_BEACON;
+				break;
+			case QLINK_IE_SET_PROBE_RESP_IES:
+				frame_type = CFG80211_BSS_FTYPE_PRESP;
+				break;
+			default:
+				frame_type = CFG80211_BSS_FTYPE_UNKNOWN;
+			}
+
+			if (ie_len) {
+				ies = ie_set->ie_data;
+				ies_len = ie_len;
+			}
+		}
+	}
+
+	if (!qlink_tlv_parsing_ok(tlv, sr->payload, payload_len))
+		return -EINVAL;
+
+	bss = cfg80211_inform_bss(wiphy, channel, frame_type,
+				  sr->bssid, get_unaligned_le64(&sr->tsf),
+				  le16_to_cpu(sr->capab),
+				  le16_to_cpu(sr->bintval), ies, ies_len,
+				  DBM_TO_MBM(sr->sig_dbm), GFP_KERNEL);
+	if (!bss)
+		return -ENOMEM;
+
+	cfg80211_put_bss(wiphy, bss);
+
+	return 0;
+}
+
+static int
+qtnf_event_handle_scan_complete(struct qtnf_wmac *mac,
+				const struct qlink_event_scan_complete *status,
+				u16 len)
+{
+	if (len < sizeof(*status)) {
+		pr_err("MAC%u: payload is too short\n", mac->macid);
+		return -EINVAL;
+	}
+
+	qtnf_scan_done(mac, le32_to_cpu(status->flags) & QLINK_SCAN_ABORTED);
+
+	return 0;
+}
+
+static int
+qtnf_event_handle_freq_change(struct qtnf_wmac *mac,
+			      const struct qlink_event_freq_change *data,
+			      u16 len)
+{
+	struct wiphy *wiphy = priv_to_wiphy(mac);
+	struct cfg80211_chan_def chandef;
+	struct qtnf_vif *vif;
+	int i;
+
+	if (len < sizeof(*data)) {
+		pr_err("MAC%u: payload is too short\n", mac->macid);
+		return -EINVAL;
+	}
+
+	if (!wiphy->registered)
+		return 0;
+
+	qlink_chandef_q2cfg(wiphy, &data->chan, &chandef);
+
+	if (!cfg80211_chandef_valid(&chandef)) {
+		pr_err("MAC%u: bad channel freq=%u cf1=%u cf2=%u bw=%u\n",
+		       mac->macid, chandef.chan->center_freq,
+		       chandef.center_freq1, chandef.center_freq2,
+		       chandef.width);
+		return -EINVAL;
+	}
+
+	pr_debug("MAC%d: new channel ieee=%u freq1=%u freq2=%u bw=%u\n",
+		 mac->macid, chandef.chan->hw_value, chandef.center_freq1,
+		 chandef.center_freq2, chandef.width);
+
+	for (i = 0; i < QTNF_MAX_INTF; i++) {
+		vif = &mac->iflist[i];
+
+		if (vif->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED)
+			continue;
+
+		if (vif->wdev.iftype == NL80211_IFTYPE_STATION &&
+		    !vif->wdev.connected)
+			continue;
+
+		if (!vif->netdev)
+			continue;
+
+		wiphy_lock(priv_to_wiphy(vif->mac));
+		cfg80211_ch_switch_notify(vif->netdev, &chandef, 0);
+		wiphy_unlock(priv_to_wiphy(vif->mac));
+	}
+
+	return 0;
+}
+
+static int qtnf_event_handle_radar(struct qtnf_vif *vif,
+				   const struct qlink_event_radar *ev,
+				   u16 len)
+{
+	struct wiphy *wiphy = priv_to_wiphy(vif->mac);
+	struct cfg80211_chan_def chandef;
+
+	if (len < sizeof(*ev)) {
+		pr_err("MAC%u: payload is too short\n", vif->mac->macid);
+		return -EINVAL;
+	}
+
+	if (!wiphy->registered || !vif->netdev)
+		return 0;
+
+	qlink_chandef_q2cfg(wiphy, &ev->chan, &chandef);
+
+	if (!cfg80211_chandef_valid(&chandef)) {
+		pr_err("MAC%u: bad channel f1=%u f2=%u bw=%u\n",
+		       vif->mac->macid,
+		       chandef.center_freq1, chandef.center_freq2,
+		       chandef.width);
+		return -EINVAL;
+	}
+
+	pr_info("%s: radar event=%u f1=%u f2=%u bw=%u\n",
+		vif->netdev->name, ev->event,
+		chandef.center_freq1, chandef.center_freq2,
+		chandef.width);
+
+	switch (ev->event) {
+	case QLINK_RADAR_DETECTED:
+		cfg80211_radar_event(wiphy, &chandef, GFP_KERNEL);
+		break;
+	case QLINK_RADAR_CAC_FINISHED:
+		if (!vif->wdev.links[0].cac_started)
+			break;
+
+		cfg80211_cac_event(vif->netdev, &chandef,
+				   NL80211_RADAR_CAC_FINISHED, GFP_KERNEL, 0);
+		break;
+	case QLINK_RADAR_CAC_ABORTED:
+		if (!vif->wdev.links[0].cac_started)
+			break;
+
+		cfg80211_cac_event(vif->netdev, &chandef,
+				   NL80211_RADAR_CAC_ABORTED, GFP_KERNEL, 0);
+		break;
+	case QLINK_RADAR_CAC_STARTED:
+		if (vif->wdev.links[0].cac_started)
+			break;
+
+		if (!wiphy_ext_feature_isset(wiphy,
+					     NL80211_EXT_FEATURE_DFS_OFFLOAD))
+			break;
+
+		cfg80211_cac_event(vif->netdev, &chandef,
+				   NL80211_RADAR_CAC_STARTED, GFP_KERNEL, 0);
+		break;
+	default:
+		pr_warn("%s: unhandled radar event %u\n",
+			vif->netdev->name, ev->event);
+		break;
+	}
+
+	return 0;
+}
+
+static int
+qtnf_event_handle_external_auth(struct qtnf_vif *vif,
+				const struct qlink_event_external_auth *ev,
+				u16 len)
+{
+	struct cfg80211_external_auth_params auth = {0};
+	struct wiphy *wiphy = priv_to_wiphy(vif->mac);
+	int ret;
+
+	if (len < sizeof(*ev)) {
+		pr_err("MAC%u: payload is too short\n", vif->mac->macid);
+		return -EINVAL;
+	}
+
+	if (!wiphy->registered || !vif->netdev)
+		return 0;
+
+	if (ev->ssid_len) {
+		int len = clamp_val(ev->ssid_len, 0, IEEE80211_MAX_SSID_LEN);
+
+		memcpy(auth.ssid.ssid, ev->ssid, len);
+		auth.ssid.ssid_len = len;
+	}
+
+	auth.key_mgmt_suite = le32_to_cpu(ev->akm_suite);
+	ether_addr_copy(auth.bssid, ev->bssid);
+	auth.action = ev->action;
+
+	pr_debug("%s: external SAE processing: bss=%pM action=%u akm=%u\n",
+		 vif->netdev->name, auth.bssid, auth.action,
+		 auth.key_mgmt_suite);
+
+	ret = cfg80211_external_auth_request(vif->netdev, &auth, GFP_KERNEL);
+	if (ret)
+		pr_warn("failed to offload external auth request\n");
+
+	return ret;
+}
+
+static int
+qtnf_event_handle_mic_failure(struct qtnf_vif *vif,
+			      const struct qlink_event_mic_failure *mic_ev,
+			      u16 len)
+{
+	struct wiphy *wiphy = priv_to_wiphy(vif->mac);
+	u8 pairwise;
+
+	if (len < sizeof(*mic_ev)) {
+		pr_err("VIF%u.%u: payload is too short (%u < %zu)\n",
+		       vif->mac->macid, vif->vifid, len,
+		       sizeof(struct qlink_event_mic_failure));
+		return -EINVAL;
+	}
+
+	if (!wiphy->registered || !vif->netdev)
+		return 0;
+
+	if (vif->wdev.iftype != NL80211_IFTYPE_STATION) {
+		pr_err("VIF%u.%u: MIC_FAILURE event when not in STA mode\n",
+		       vif->mac->macid, vif->vifid);
+		return -EPROTO;
+	}
+
+	pairwise = mic_ev->pairwise ?
+		NL80211_KEYTYPE_PAIRWISE : NL80211_KEYTYPE_GROUP;
+
+	pr_info("%s: MIC error: src=%pM key_index=%u pairwise=%u\n",
+		vif->netdev->name, mic_ev->src, mic_ev->key_index, pairwise);
+
+	cfg80211_michael_mic_failure(vif->netdev, mic_ev->src, pairwise,
+				     mic_ev->key_index, NULL, GFP_KERNEL);
+
+	return 0;
+}
+
+static int
+qtnf_event_handle_update_owe(struct qtnf_vif *vif,
+			     const struct qlink_event_update_owe *owe_ev,
+			     u16 len)
+{
+	struct wiphy *wiphy = priv_to_wiphy(vif->mac);
+	struct cfg80211_update_owe_info owe_info = {};
+	const u16 ie_len = len - sizeof(*owe_ev);
+	u8 *ie;
+
+	if (len < sizeof(*owe_ev)) {
+		pr_err("VIF%u.%u: payload is too short (%u < %zu)\n",
+		       vif->mac->macid, vif->vifid, len,
+		       sizeof(struct qlink_event_update_owe));
+		return -EINVAL;
+	}
+
+	if (!wiphy->registered || !vif->netdev)
+		return 0;
+
+	if (vif->wdev.iftype != NL80211_IFTYPE_AP) {
+		pr_err("VIF%u.%u: UPDATE_OWE event when not in AP mode\n",
+		       vif->mac->macid, vif->vifid);
+		return -EPROTO;
+	}
+
+	ie = kzalloc(ie_len, GFP_KERNEL);
+	if (!ie)
+		return -ENOMEM;
+
+	memcpy(owe_info.peer, owe_ev->peer, ETH_ALEN);
+	memcpy(ie, owe_ev->ies, ie_len);
+	owe_info.ie_len = ie_len;
+	owe_info.ie = ie;
+	owe_info.assoc_link_id = -1;
+
+	pr_info("%s: external OWE processing: peer=%pM\n",
+		vif->netdev->name, owe_ev->peer);
+
+	cfg80211_update_owe_info_event(vif->netdev, &owe_info, GFP_KERNEL);
+	kfree(ie);
+
+	return 0;
+}
+
+static int qtnf_event_parse(struct qtnf_wmac *mac,
+			    const struct sk_buff *event_skb)
+{
+	const struct qlink_event *event;
+	struct qtnf_vif *vif = NULL;
+	int ret = -1;
+	u16 event_id;
+	u16 event_len;
+	u8 vifid;
+
+	event = (const struct qlink_event *)event_skb->data;
+	event_id = le16_to_cpu(event->event_id);
+	event_len = le16_to_cpu(event->mhdr.len);
+
+	if (event->vifid >= QTNF_MAX_INTF) {
+		pr_err("invalid vif(%u)\n", event->vifid);
+		return -EINVAL;
+	}
+
+	vifid = array_index_nospec(event->vifid, QTNF_MAX_INTF);
+	vif = &mac->iflist[vifid];
+
+	switch (event_id) {
+	case QLINK_EVENT_STA_ASSOCIATED:
+		ret = qtnf_event_handle_sta_assoc(mac, vif, (const void *)event,
+						  event_len);
+		break;
+	case QLINK_EVENT_STA_DEAUTH:
+		ret = qtnf_event_handle_sta_deauth(mac, vif,
+						   (const void *)event,
+						   event_len);
+		break;
+	case QLINK_EVENT_MGMT_RECEIVED:
+		ret = qtnf_event_handle_mgmt_received(vif, (const void *)event,
+						      event_len);
+		break;
+	case QLINK_EVENT_SCAN_RESULTS:
+		ret = qtnf_event_handle_scan_results(vif, (const void *)event,
+						     event_len);
+		break;
+	case QLINK_EVENT_SCAN_COMPLETE:
+		ret = qtnf_event_handle_scan_complete(mac, (const void *)event,
+						      event_len);
+		break;
+	case QLINK_EVENT_BSS_JOIN:
+		ret = qtnf_event_handle_bss_join(vif, (const void *)event,
+						 event_len);
+		break;
+	case QLINK_EVENT_BSS_LEAVE:
+		ret = qtnf_event_handle_bss_leave(vif, (const void *)event,
+						  event_len);
+		break;
+	case QLINK_EVENT_FREQ_CHANGE:
+		ret = qtnf_event_handle_freq_change(mac, (const void *)event,
+						    event_len);
+		break;
+	case QLINK_EVENT_RADAR:
+		ret = qtnf_event_handle_radar(vif, (const void *)event,
+					      event_len);
+		break;
+	case QLINK_EVENT_EXTERNAL_AUTH:
+		ret = qtnf_event_handle_external_auth(vif, (const void *)event,
+						      event_len);
+		break;
+	case QLINK_EVENT_MIC_FAILURE:
+		ret = qtnf_event_handle_mic_failure(vif, (const void *)event,
+						    event_len);
+		break;
+	case QLINK_EVENT_UPDATE_OWE:
+		ret = qtnf_event_handle_update_owe(vif, (const void *)event,
+						   event_len);
+		break;
+	default:
+		pr_warn("unknown event type: %x\n", event_id);
+		break;
+	}
+
+	return ret;
+}
+
+static int qtnf_event_process_skb(struct qtnf_bus *bus,
+				  const struct sk_buff *skb)
+{
+	const struct qlink_event *event;
+	struct qtnf_wmac *mac;
+	int res;
+
+	if (unlikely(!skb || skb->len < sizeof(*event))) {
+		pr_err("invalid event buffer\n");
+		return -EINVAL;
+	}
+
+	event = (struct qlink_event *)skb->data;
+
+	mac = qtnf_core_get_mac(bus, event->macid);
+
+	pr_debug("new event id:%x len:%u mac:%u vif:%u\n",
+		 le16_to_cpu(event->event_id), le16_to_cpu(event->mhdr.len),
+		 event->macid, event->vifid);
+
+	if (unlikely(!mac))
+		return -ENXIO;
+
+	rtnl_lock();
+	res = qtnf_event_parse(mac, skb);
+	rtnl_unlock();
+
+	return res;
+}
+
+void qtnf_event_work_handler(struct work_struct *work)
+{
+	struct qtnf_bus *bus = container_of(work, struct qtnf_bus, event_work);
+	struct sk_buff_head *event_queue = &bus->trans.event_queue;
+	struct sk_buff *current_event_skb = skb_dequeue(event_queue);
+
+	while (current_event_skb) {
+		qtnf_event_process_skb(bus, current_event_skb);
+		dev_kfree_skb_any(current_event_skb);
+		current_event_skb = skb_dequeue(event_queue);
+	}
+}

linux-7.2.3/drivers/net/wireless/quantenna/qtnfmac/event.h

@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Copyright (c) 2015-2016 Quantenna Communications. All rights reserved. */
+
+#ifndef _QTN_FMAC_EVENT_H_
+#define _QTN_FMAC_EVENT_H_
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+
+#include "qlink.h"
+
+void qtnf_event_work_handler(struct work_struct *work);
+
+#endif /* _QTN_FMAC_EVENT_H_ */

linux-7.2.3/drivers/net/wireless/quantenna/qtnfmac/pcie/pcie.c

@@ -0,0 +1,493 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Copyright (c) 2018 Quantenna Communications, Inc. All rights reserved. */
+
+#include <linux/module.h>
+#include <linux/printk.h>
+#include <linux/pci.h>
+#include <linux/spinlock.h>
+#include <linux/mutex.h>
+#include <linux/netdevice.h>
+#include <linux/seq_file.h>
+#include <linux/workqueue.h>
+#include <linux/completion.h>
+
+#include "pcie_priv.h"
+#include "bus.h"
+#include "shm_ipc.h"
+#include "core.h"
+#include "debug.h"
+#include "util.h"
+#include "qtn_hw_ids.h"
+
+#define QTN_SYSCTL_BAR	0
+#define QTN_SHMEM_BAR	2
+#define QTN_DMA_BAR	3
+
+#define QTN_PCIE_MAX_FW_BUFSZ		(1 * 1024 * 1024)
+
+static bool use_msi = true;
+module_param(use_msi, bool, 0644);
+MODULE_PARM_DESC(use_msi, "set 0 to use legacy interrupt");
+
+static unsigned int tx_bd_size_param;
+module_param(tx_bd_size_param, uint, 0644);
+MODULE_PARM_DESC(tx_bd_size_param, "Tx descriptors queue size");
+
+static unsigned int rx_bd_size_param;
+module_param(rx_bd_size_param, uint, 0644);
+MODULE_PARM_DESC(rx_bd_size_param, "Rx descriptors queue size");
+
+static u8 flashboot = 1;
+module_param(flashboot, byte, 0644);
+MODULE_PARM_DESC(flashboot, "set to 0 to use FW binary file on FS");
+
+static unsigned int fw_blksize_param = QTN_PCIE_MAX_FW_BUFSZ;
+module_param(fw_blksize_param, uint, 0644);
+MODULE_PARM_DESC(fw_blksize_param, "firmware loading block size in bytes");
+
+#define DRV_NAME	"qtnfmac_pcie"
+
+int qtnf_pcie_control_tx(struct qtnf_bus *bus, struct sk_buff *skb)
+{
+	struct qtnf_pcie_bus_priv *priv = get_bus_priv(bus);
+	int ret;
+
+	ret = qtnf_shm_ipc_send(&priv->shm_ipc_ep_in, skb->data, skb->len);
+
+	if (ret == -ETIMEDOUT) {
+		pr_err("EP firmware is dead\n");
+		bus->fw_state = QTNF_FW_STATE_DEAD;
+	}
+
+	return ret;
+}
+
+int qtnf_pcie_alloc_skb_array(struct qtnf_pcie_bus_priv *priv)
+{
+	struct sk_buff **vaddr;
+	int len;
+
+	len = priv->tx_bd_num * sizeof(*priv->tx_skb) +
+		priv->rx_bd_num * sizeof(*priv->rx_skb);
+	vaddr = devm_kzalloc(&priv->pdev->dev, len, GFP_KERNEL);
+
+	if (!vaddr)
+		return -ENOMEM;
+
+	priv->tx_skb = vaddr;
+
+	vaddr += priv->tx_bd_num;
+	priv->rx_skb = vaddr;
+
+	return 0;
+}
+
+static void qtnf_pcie_bringup_fw_async(struct qtnf_bus *bus)
+{
+	struct qtnf_pcie_bus_priv *priv = get_bus_priv(bus);
+	struct pci_dev *pdev = priv->pdev;
+
+	get_device(&pdev->dev);
+	schedule_work(&bus->fw_work);
+}
+
+static int qtnf_dbg_mps_show(struct seq_file *s, void *data)
+{
+	struct qtnf_bus *bus = dev_get_drvdata(s->private);
+	struct qtnf_pcie_bus_priv *priv = get_bus_priv(bus);
+
+	seq_printf(s, "%d\n", pcie_get_mps(priv->pdev));
+
+	return 0;
+}
+
+static int qtnf_dbg_msi_show(struct seq_file *s, void *data)
+{
+	struct qtnf_bus *bus = dev_get_drvdata(s->private);
+	struct qtnf_pcie_bus_priv *priv = get_bus_priv(bus);
+
+	seq_printf(s, "%u\n", priv->msi_enabled);
+
+	return 0;
+}
+
+static int qtnf_dbg_shm_stats(struct seq_file *s, void *data)
+{
+	struct qtnf_bus *bus = dev_get_drvdata(s->private);
+	struct qtnf_pcie_bus_priv *priv = get_bus_priv(bus);
+
+	seq_printf(s, "shm_ipc_ep_in.tx_packet_count(%zu)\n",
+		   priv->shm_ipc_ep_in.tx_packet_count);
+	seq_printf(s, "shm_ipc_ep_in.rx_packet_count(%zu)\n",
+		   priv->shm_ipc_ep_in.rx_packet_count);
+	seq_printf(s, "shm_ipc_ep_out.tx_packet_count(%zu)\n",
+		   priv->shm_ipc_ep_out.tx_timeout_count);
+	seq_printf(s, "shm_ipc_ep_out.rx_packet_count(%zu)\n",
+		   priv->shm_ipc_ep_out.rx_packet_count);
+
+	return 0;
+}
+
+int qtnf_pcie_fw_boot_done(struct qtnf_bus *bus)
+{
+	struct qtnf_pcie_bus_priv *priv = get_bus_priv(bus);
+	char card_id[64];
+	int ret;
+
+	bus->fw_state = QTNF_FW_STATE_BOOT_DONE;
+	ret = qtnf_core_attach(bus);
+	if (ret) {
+		pr_err("failed to attach core\n");
+	} else {
+		snprintf(card_id, sizeof(card_id), "%s:%s",
+			 DRV_NAME, pci_name(priv->pdev));
+		qtnf_debugfs_init(bus, card_id);
+		qtnf_debugfs_add_entry(bus, "mps", qtnf_dbg_mps_show);
+		qtnf_debugfs_add_entry(bus, "msi_enabled", qtnf_dbg_msi_show);
+		qtnf_debugfs_add_entry(bus, "shm_stats", qtnf_dbg_shm_stats);
+	}
+
+	return ret;
+}
+
+static void qtnf_tune_pcie_mps(struct pci_dev *pdev)
+{
+	struct pci_dev *parent;
+	int mps_p, mps_o, mps_m, mps;
+	int ret;
+
+	/* current mps */
+	mps_o = pcie_get_mps(pdev);
+
+	/* maximum supported mps */
+	mps_m = 128 << pdev->pcie_mpss;
+
+	/* suggested new mps value */
+	mps = mps_m;
+
+	if (pdev->bus && pdev->bus->self) {
+		/* parent (bus) mps */
+		parent = pdev->bus->self;
+
+		if (pci_is_pcie(parent)) {
+			mps_p = pcie_get_mps(parent);
+			mps = min(mps_m, mps_p);
+		}
+	}
+
+	ret = pcie_set_mps(pdev, mps);
+	if (ret) {
+		pr_err("failed to set mps to %d, keep using current %d\n",
+		       mps, mps_o);
+		return;
+	}
+
+	pr_debug("set mps to %d (was %d, max %d)\n", mps, mps_o, mps_m);
+}
+
+static void qtnf_pcie_init_irq(struct qtnf_pcie_bus_priv *priv, bool use_msi)
+{
+	struct pci_dev *pdev = priv->pdev;
+
+	/* fall back to legacy INTx interrupts by default */
+	priv->msi_enabled = 0;
+
+	/* check if MSI capability is available */
+	if (use_msi) {
+		if (!pci_enable_msi(pdev)) {
+			pr_debug("enabled MSI interrupt\n");
+			priv->msi_enabled = 1;
+		} else {
+			pr_warn("failed to enable MSI interrupts");
+		}
+	}
+
+	if (!priv->msi_enabled) {
+		pr_warn("legacy PCIE interrupts enabled\n");
+		pcim_intx(pdev, 1);
+	}
+}
+
+static void __iomem *qtnf_map_bar(struct pci_dev *pdev, u8 index)
+{
+	void __iomem *vaddr;
+	dma_addr_t busaddr;
+	size_t len;
+	int ret;
+
+	ret = pcim_iomap_regions(pdev, 1 << index, "qtnfmac_pcie");
+	if (ret)
+		return IOMEM_ERR_PTR(ret);
+
+	busaddr = pci_resource_start(pdev, index);
+	len = pci_resource_len(pdev, index);
+	vaddr = pcim_iomap_table(pdev)[index];
+	if (!vaddr)
+		return IOMEM_ERR_PTR(-ENOMEM);
+
+	pr_debug("BAR%u vaddr=0x%p busaddr=%pad len=%u\n",
+		 index, vaddr, &busaddr, (int)len);
+
+	return vaddr;
+}
+
+static void qtnf_pcie_control_rx_callback(void *arg, const u8 __iomem *buf,
+					  size_t len)
+{
+	struct qtnf_pcie_bus_priv *priv = arg;
+	struct qtnf_bus *bus = pci_get_drvdata(priv->pdev);
+	struct sk_buff *skb;
+
+	if (unlikely(len == 0)) {
+		pr_warn("zero length packet received\n");
+		return;
+	}
+
+	skb = __dev_alloc_skb(len, GFP_KERNEL);
+
+	if (unlikely(!skb)) {
+		pr_err("failed to allocate skb\n");
+		return;
+	}
+
+	memcpy_fromio(skb_put(skb, len), buf, len);
+
+	qtnf_trans_handle_rx_ctl_packet(bus, skb);
+}
+
+void qtnf_pcie_init_shm_ipc(struct qtnf_pcie_bus_priv *priv,
+			    struct qtnf_shm_ipc_region __iomem *ipc_tx_reg,
+			    struct qtnf_shm_ipc_region __iomem *ipc_rx_reg,
+			    const struct qtnf_shm_ipc_int *ipc_int)
+{
+	const struct qtnf_shm_ipc_rx_callback rx_callback = {
+					qtnf_pcie_control_rx_callback, priv };
+
+	qtnf_shm_ipc_init(&priv->shm_ipc_ep_in, QTNF_SHM_IPC_OUTBOUND,
+			  ipc_tx_reg, priv->workqueue,
+			  ipc_int, &rx_callback);
+	qtnf_shm_ipc_init(&priv->shm_ipc_ep_out, QTNF_SHM_IPC_INBOUND,
+			  ipc_rx_reg, priv->workqueue,
+			  ipc_int, &rx_callback);
+}
+
+static int qtnf_pcie_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+	struct qtnf_pcie_bus_priv *pcie_priv;
+	struct qtnf_bus *bus;
+	void __iomem *sysctl_bar;
+	void __iomem *epmem_bar;
+	void __iomem *dmareg_bar;
+	unsigned int chipid;
+	int ret;
+
+	if (!pci_is_pcie(pdev)) {
+		pr_err("device %s is not PCI Express\n", pci_name(pdev));
+		return -EIO;
+	}
+
+	qtnf_tune_pcie_mps(pdev);
+
+	ret = pcim_enable_device(pdev);
+	if (ret) {
+		pr_err("failed to init PCI device %x\n", pdev->device);
+		return ret;
+	}
+
+	pci_set_master(pdev);
+
+	sysctl_bar = qtnf_map_bar(pdev, QTN_SYSCTL_BAR);
+	if (IS_ERR(sysctl_bar)) {
+		pr_err("failed to map BAR%u\n", QTN_SYSCTL_BAR);
+		return PTR_ERR(sysctl_bar);
+	}
+
+	dmareg_bar = qtnf_map_bar(pdev, QTN_DMA_BAR);
+	if (IS_ERR(dmareg_bar)) {
+		pr_err("failed to map BAR%u\n", QTN_DMA_BAR);
+		return PTR_ERR(dmareg_bar);
+	}
+
+	epmem_bar = qtnf_map_bar(pdev, QTN_SHMEM_BAR);
+	if (IS_ERR(epmem_bar)) {
+		pr_err("failed to map BAR%u\n", QTN_SHMEM_BAR);
+		return PTR_ERR(epmem_bar);
+	}
+
+	chipid = qtnf_chip_id_get(sysctl_bar);
+
+	pr_info("identified device: %s\n", qtnf_chipid_to_string(chipid));
+
+	switch (chipid) {
+	case QTN_CHIP_ID_PEARL:
+	case QTN_CHIP_ID_PEARL_B:
+	case QTN_CHIP_ID_PEARL_C:
+		bus = qtnf_pcie_pearl_alloc(pdev);
+		break;
+	case QTN_CHIP_ID_TOPAZ:
+		bus = qtnf_pcie_topaz_alloc(pdev);
+		break;
+	default:
+		pr_err("unsupported chip ID 0x%x\n", chipid);
+		return -ENOTSUPP;
+	}
+
+	if (!bus)
+		return -ENOMEM;
+
+	pcie_priv = get_bus_priv(bus);
+	pci_set_drvdata(pdev, bus);
+	bus->dev = &pdev->dev;
+	bus->fw_state = QTNF_FW_STATE_DETACHED;
+	pcie_priv->pdev = pdev;
+	pcie_priv->tx_stopped = 0;
+	pcie_priv->flashboot = flashboot;
+
+	if (fw_blksize_param > QTN_PCIE_MAX_FW_BUFSZ)
+		pcie_priv->fw_blksize =  QTN_PCIE_MAX_FW_BUFSZ;
+	else
+		pcie_priv->fw_blksize = fw_blksize_param;
+
+	mutex_init(&bus->bus_lock);
+	spin_lock_init(&pcie_priv->tx_lock);
+	spin_lock_init(&pcie_priv->tx_reclaim_lock);
+
+	pcie_priv->tx_full_count = 0;
+	pcie_priv->tx_done_count = 0;
+	pcie_priv->pcie_irq_count = 0;
+	pcie_priv->tx_reclaim_done = 0;
+	pcie_priv->tx_reclaim_req = 0;
+
+	pcie_priv->workqueue = create_singlethread_workqueue("QTNF_PCIE");
+	if (!pcie_priv->workqueue) {
+		pr_err("failed to alloc bus workqueue\n");
+		return -ENODEV;
+	}
+
+	ret = dma_set_mask_and_coherent(&pdev->dev,
+					pcie_priv->dma_mask_get_cb());
+	if (ret) {
+		pr_err("PCIE DMA coherent mask init failed 0x%llx\n",
+		       pcie_priv->dma_mask_get_cb());
+		goto error;
+	}
+
+	bus->mux_dev = alloc_netdev_dummy(0);
+	if (!bus->mux_dev) {
+		ret = -ENOMEM;
+		goto error;
+	}
+
+	qtnf_pcie_init_irq(pcie_priv, use_msi);
+	pcie_priv->sysctl_bar = sysctl_bar;
+	pcie_priv->dmareg_bar = dmareg_bar;
+	pcie_priv->epmem_bar = epmem_bar;
+	pci_save_state(pdev);
+
+	ret = pcie_priv->probe_cb(bus, tx_bd_size_param, rx_bd_size_param);
+	if (ret)
+		goto error_free;
+
+	qtnf_pcie_bringup_fw_async(bus);
+	return 0;
+
+error_free:
+	free_netdev(bus->mux_dev);
+error:
+	destroy_workqueue(pcie_priv->workqueue);
+	pci_set_drvdata(pdev, NULL);
+	return ret;
+}
+
+static void qtnf_pcie_free_shm_ipc(struct qtnf_pcie_bus_priv *priv)
+{
+	qtnf_shm_ipc_free(&priv->shm_ipc_ep_in);
+	qtnf_shm_ipc_free(&priv->shm_ipc_ep_out);
+}
+
+static void qtnf_pcie_remove(struct pci_dev *dev)
+{
+	struct qtnf_pcie_bus_priv *priv;
+	struct qtnf_bus *bus;
+
+	bus = pci_get_drvdata(dev);
+	if (!bus)
+		return;
+
+	priv = get_bus_priv(bus);
+
+	cancel_work_sync(&bus->fw_work);
+
+	if (qtnf_fw_is_attached(bus))
+		qtnf_core_detach(bus);
+
+	netif_napi_del(&bus->mux_napi);
+	destroy_workqueue(priv->workqueue);
+	tasklet_kill(&priv->reclaim_tq);
+	free_netdev(bus->mux_dev);
+
+	qtnf_pcie_free_shm_ipc(priv);
+	qtnf_debugfs_remove(bus);
+	priv->remove_cb(bus);
+	pci_set_drvdata(priv->pdev, NULL);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int qtnf_pcie_suspend(struct device *dev)
+{
+	struct qtnf_pcie_bus_priv *priv;
+	struct qtnf_bus *bus;
+
+	bus = dev_get_drvdata(dev);
+	if (!bus)
+		return -EFAULT;
+
+	priv = get_bus_priv(bus);
+	return priv->suspend_cb(bus);
+}
+
+static int qtnf_pcie_resume(struct device *dev)
+{
+	struct qtnf_pcie_bus_priv *priv;
+	struct qtnf_bus *bus;
+
+	bus = dev_get_drvdata(dev);
+	if (!bus)
+		return -EFAULT;
+
+	priv = get_bus_priv(bus);
+	return priv->resume_cb(bus);
+}
+
+/* Power Management Hooks */
+static SIMPLE_DEV_PM_OPS(qtnf_pcie_pm_ops, qtnf_pcie_suspend,
+			 qtnf_pcie_resume);
+#endif
+
+static const struct pci_device_id qtnf_pcie_devid_table[] = {
+	{
+		PCIE_VENDOR_ID_QUANTENNA, PCIE_DEVICE_ID_QSR,
+		PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+	},
+	{ },
+};
+
+MODULE_DEVICE_TABLE(pci, qtnf_pcie_devid_table);
+
+static struct pci_driver qtnf_pcie_drv_data = {
+	.name = DRV_NAME,
+	.id_table = qtnf_pcie_devid_table,
+	.probe = qtnf_pcie_probe,
+	.remove = qtnf_pcie_remove,
+#ifdef CONFIG_PM_SLEEP
+	.driver = {
+		.pm = &qtnf_pcie_pm_ops,
+	},
+#endif
+};
+
+module_pci_driver(qtnf_pcie_drv_data)
+
+MODULE_AUTHOR("Quantenna Communications");
+MODULE_DESCRIPTION("Quantenna PCIe bus driver for 802.11 wireless LAN.");
+MODULE_LICENSE("GPL");

linux-7.2.3/drivers/net/wireless/quantenna/qtnfmac/pcie/pcie_priv.h

@@ -0,0 +1,90 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Copyright (c) 2018 Quantenna Communications, Inc. All rights reserved. */
+
+#ifndef _QTN_FMAC_PCIE_H_
+#define _QTN_FMAC_PCIE_H_
+
+#include <linux/pci.h>
+#include <linux/spinlock.h>
+#include <linux/io.h>
+#include <linux/skbuff.h>
+#include <linux/workqueue.h>
+#include <linux/interrupt.h>
+
+#include "shm_ipc.h"
+#include "bus.h"
+
+#define SKB_BUF_SIZE		2048
+
+#define QTN_FW_DL_TIMEOUT_MS	3000
+#define QTN_FW_QLINK_TIMEOUT_MS	30000
+#define QTN_EP_RESET_WAIT_MS	1000
+
+struct qtnf_pcie_bus_priv {
+	struct pci_dev *pdev;
+
+	int (*probe_cb)(struct qtnf_bus *bus, unsigned int tx_bd_size,
+			unsigned int rx_bd_size);
+	void (*remove_cb)(struct qtnf_bus *bus);
+	int (*suspend_cb)(struct qtnf_bus *bus);
+	int (*resume_cb)(struct qtnf_bus *bus);
+	u64 (*dma_mask_get_cb)(void);
+
+	spinlock_t tx_reclaim_lock;
+	spinlock_t tx_lock;
+
+	struct workqueue_struct *workqueue;
+	struct tasklet_struct reclaim_tq;
+
+	void __iomem *sysctl_bar;
+	void __iomem *epmem_bar;
+	void __iomem *dmareg_bar;
+
+	struct qtnf_shm_ipc shm_ipc_ep_in;
+	struct qtnf_shm_ipc shm_ipc_ep_out;
+
+	u16 tx_bd_num;
+	u16 rx_bd_num;
+
+	struct sk_buff **tx_skb;
+	struct sk_buff **rx_skb;
+
+	unsigned int fw_blksize;
+
+	u32 rx_bd_w_index;
+	u32 rx_bd_r_index;
+
+	u32 tx_bd_w_index;
+	u32 tx_bd_r_index;
+
+	/* diagnostics stats */
+	u32 pcie_irq_count;
+	u32 tx_full_count;
+	u32 tx_done_count;
+	u32 tx_reclaim_done;
+	u32 tx_reclaim_req;
+
+	u8 msi_enabled;
+	u8 tx_stopped;
+	bool flashboot;
+};
+
+int qtnf_pcie_control_tx(struct qtnf_bus *bus, struct sk_buff *skb);
+int qtnf_pcie_alloc_skb_array(struct qtnf_pcie_bus_priv *priv);
+int qtnf_pcie_fw_boot_done(struct qtnf_bus *bus);
+void qtnf_pcie_init_shm_ipc(struct qtnf_pcie_bus_priv *priv,
+			    struct qtnf_shm_ipc_region __iomem *ipc_tx_reg,
+			    struct qtnf_shm_ipc_region __iomem *ipc_rx_reg,
+			    const struct qtnf_shm_ipc_int *ipc_int);
+struct qtnf_bus *qtnf_pcie_pearl_alloc(struct pci_dev *pdev);
+struct qtnf_bus *qtnf_pcie_topaz_alloc(struct pci_dev *pdev);
+
+static inline void qtnf_non_posted_write(u32 val, void __iomem *basereg)
+{
+	writel(val, basereg);
+
+	/* flush posted write */
+	readl(basereg);
+}
+
+#endif /* _QTN_FMAC_PCIE_H_ */

linux-7.2.3/drivers/net/wireless/quantenna/qtnfmac/pcie/pearl_pcie_ipc.h

@@ -0,0 +1,82 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Copyright (c) 2015-2016 Quantenna Communications */
+
+#ifndef _QTN_FMAC_PCIE_IPC_H_
+#define _QTN_FMAC_PCIE_IPC_H_
+
+#include <linux/types.h>
+
+#include "shm_ipc_defs.h"
+
+/* bitmap for EP status and flags: updated by EP, read by RC */
+#define QTN_EP_HAS_UBOOT	BIT(0)
+#define QTN_EP_HAS_FIRMWARE	BIT(1)
+#define QTN_EP_REQ_UBOOT	BIT(2)
+#define QTN_EP_REQ_FIRMWARE	BIT(3)
+#define QTN_EP_ERROR_UBOOT	BIT(4)
+#define QTN_EP_ERROR_FIRMWARE	BIT(5)
+
+#define QTN_EP_FW_LOADRDY	BIT(8)
+#define QTN_EP_FW_SYNC		BIT(9)
+#define QTN_EP_FW_RETRY		BIT(10)
+#define QTN_EP_FW_QLINK_DONE	BIT(15)
+#define QTN_EP_FW_DONE		BIT(16)
+
+/* bitmap for RC status and flags: updated by RC, read by EP */
+#define QTN_RC_PCIE_LINK	BIT(0)
+#define QTN_RC_NET_LINK		BIT(1)
+#define QTN_RC_FW_FLASHBOOT	BIT(5)
+#define QTN_RC_FW_QLINK		BIT(7)
+#define QTN_RC_FW_LOADRDY	BIT(8)
+#define QTN_RC_FW_SYNC		BIT(9)
+
+#define PCIE_HDP_INT_RX_BITS (0		\
+	| PCIE_HDP_INT_EP_TXDMA		\
+	| PCIE_HDP_INT_EP_TXEMPTY	\
+	| PCIE_HDP_INT_HHBM_UF		\
+	)
+
+#define PCIE_HDP_INT_TX_BITS (0		\
+	| PCIE_HDP_INT_EP_RXDMA		\
+	)
+
+#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
+#define QTN_HOST_HI32(a)	((u32)(((u64)a) >> 32))
+#define QTN_HOST_LO32(a)	((u32)(((u64)a) & 0xffffffffUL))
+#define QTN_HOST_ADDR(h, l)	((((u64)h) << 32) | ((u64)l))
+#else
+#define QTN_HOST_HI32(a)	0
+#define QTN_HOST_LO32(a)	((u32)(((u32)a) & 0xffffffffUL))
+#define QTN_HOST_ADDR(h, l)	((u32)l)
+#endif
+
+#define QTN_PCIE_BDA_VERSION		0x1002
+
+#define PCIE_BDA_NAMELEN		32
+#define PCIE_HHBM_MAX_SIZE		2048
+
+#define QTN_PCIE_BOARDFLG	"PCIEQTN"
+#define QTN_PCIE_FW_DLMASK	0xF
+#define QTN_PCIE_FW_BUFSZ	2048
+
+#define QTN_ENET_ADDR_LENGTH	6
+
+#define QTN_TXDONE_MASK		((u32)0x80000000)
+#define QTN_GET_LEN(x)		((x) & 0xFFFF)
+
+#define QTN_PCIE_TX_DESC_LEN_MASK	0xFFFF
+#define QTN_PCIE_TX_DESC_LEN_SHIFT	0
+#define QTN_PCIE_TX_DESC_PORT_MASK	0xF
+#define QTN_PCIE_TX_DESC_PORT_SHIFT	16
+#define QTN_PCIE_TX_DESC_TQE_BIT	BIT(24)
+
+#define QTN_EP_LHOST_TQE_PORT	4
+
+enum qtnf_fw_loadtype {
+	QTN_FW_DBEGIN,
+	QTN_FW_DSUB,
+	QTN_FW_DEND,
+	QTN_FW_CTRL
+};
+
+#endif /* _QTN_FMAC_PCIE_IPC_H_ */

linux-7.2.3/drivers/net/wireless/quantenna/qtnfmac/pcie/pearl_pcie_regs.h

@@ -0,0 +1,121 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Copyright (c) 2015 Quantenna Communications */
+
+#ifndef __PEARL_PCIE_H
+#define __PEARL_PCIE_H
+
+/* Pearl PCIe HDP registers */
+#define PCIE_HDP_CTRL(base)			((base) + 0x2c00)
+#define PCIE_HDP_AXI_CTRL(base)			((base) + 0x2c04)
+#define PCIE_HDP_HOST_WR_DESC0(base)		((base) + 0x2c10)
+#define PCIE_HDP_HOST_WR_DESC0_H(base)		((base) + 0x2c14)
+#define PCIE_HDP_HOST_WR_DESC1(base)		((base) + 0x2c18)
+#define PCIE_HDP_HOST_WR_DESC1_H(base)		((base) + 0x2c1c)
+#define PCIE_HDP_HOST_WR_DESC2(base)		((base) + 0x2c20)
+#define PCIE_HDP_HOST_WR_DESC2_H(base)		((base) + 0x2c24)
+#define PCIE_HDP_HOST_WR_DESC3(base)		((base) + 0x2c28)
+#define PCIE_HDP_HOST_WR_DESC4_H(base)		((base) + 0x2c2c)
+#define PCIE_HDP_RX_INT_CTRL(base)		((base) + 0x2c30)
+#define PCIE_HDP_TX_INT_CTRL(base)		((base) + 0x2c34)
+#define PCIE_HDP_INT_STATUS(base)		((base) + 0x2c38)
+#define PCIE_HDP_INT_EN(base)			((base) + 0x2c3c)
+#define PCIE_HDP_RX_DESC0_PTR(base)		((base) + 0x2c40)
+#define PCIE_HDP_RX_DESC0_NOE(base)		((base) + 0x2c44)
+#define PCIE_HDP_RX_DESC1_PTR(base)		((base) + 0x2c48)
+#define PCIE_HDP_RX_DESC1_NOE(base)		((base) + 0x2c4c)
+#define PCIE_HDP_RX_DESC2_PTR(base)		((base) + 0x2c50)
+#define PCIE_HDP_RX_DESC2_NOE(base)		((base) + 0x2c54)
+#define PCIE_HDP_RX_DESC3_PTR(base)		((base) + 0x2c58)
+#define PCIE_HDP_RX_DESC3_NOE(base)		((base) + 0x2c5c)
+
+#define PCIE_HDP_TX0_BASE_ADDR(base)		((base) + 0x2c60)
+#define PCIE_HDP_TX1_BASE_ADDR(base)		((base) + 0x2c64)
+#define PCIE_HDP_TX0_Q_CTRL(base)		((base) + 0x2c70)
+#define PCIE_HDP_TX1_Q_CTRL(base)		((base) + 0x2c74)
+#define PCIE_HDP_CFG0(base)			((base) + 0x2c80)
+#define PCIE_HDP_CFG1(base)			((base) + 0x2c84)
+#define PCIE_HDP_CFG2(base)			((base) + 0x2c88)
+#define PCIE_HDP_CFG3(base)			((base) + 0x2c8c)
+#define PCIE_HDP_CFG4(base)			((base) + 0x2c90)
+#define PCIE_HDP_CFG5(base)			((base) + 0x2c94)
+#define PCIE_HDP_CFG6(base)			((base) + 0x2c98)
+#define PCIE_HDP_CFG7(base)			((base) + 0x2c9c)
+#define PCIE_HDP_CFG8(base)			((base) + 0x2ca0)
+#define PCIE_HDP_CFG9(base)			((base) + 0x2ca4)
+#define PCIE_HDP_CFG10(base)			((base) + 0x2ca8)
+#define PCIE_HDP_CFG11(base)			((base) + 0x2cac)
+#define PCIE_INT(base)				((base) + 0x2cb0)
+#define PCIE_INT_MASK(base)			((base) + 0x2cb4)
+#define PCIE_MSI_MASK(base)			((base) + 0x2cb8)
+#define PCIE_MSI_PNDG(base)			((base) + 0x2cbc)
+#define PCIE_PRI_CFG(base)			((base) + 0x2cc0)
+#define PCIE_PHY_CR(base)			((base) + 0x2cc4)
+#define PCIE_HDP_CTAG_CTRL(base)		((base) + 0x2cf4)
+#define PCIE_HDP_HHBM_BUF_PTR(base)		((base) + 0x2d00)
+#define PCIE_HDP_HHBM_BUF_PTR_H(base)		((base) + 0x2d04)
+#define PCIE_HDP_HHBM_BUF_FIFO_NOE(base)	((base) + 0x2d04)
+#define PCIE_HDP_RX0DMA_CNT(base)		((base) + 0x2d10)
+#define PCIE_HDP_RX1DMA_CNT(base)		((base) + 0x2d14)
+#define PCIE_HDP_RX2DMA_CNT(base)		((base) + 0x2d18)
+#define PCIE_HDP_RX3DMA_CNT(base)		((base) + 0x2d1c)
+#define PCIE_HDP_TX0DMA_CNT(base)		((base) + 0x2d20)
+#define PCIE_HDP_TX1DMA_CNT(base)		((base) + 0x2d24)
+#define PCIE_HDP_RXDMA_CTRL(base)		((base) + 0x2d28)
+#define PCIE_HDP_TX_HOST_Q_SZ_CTRL(base)	((base) + 0x2d2c)
+#define PCIE_HDP_TX_HOST_Q_BASE_L(base)		((base) + 0x2d30)
+#define PCIE_HDP_TX_HOST_Q_BASE_H(base)		((base) + 0x2d34)
+#define PCIE_HDP_TX_HOST_Q_WR_PTR(base)		((base) + 0x2d38)
+#define PCIE_HDP_TX_HOST_Q_RD_PTR(base)		((base) + 0x2d3c)
+#define PCIE_HDP_TX_HOST_Q_STS(base)		((base) + 0x2d40)
+
+/* Pearl PCIe HBM pool registers */
+#define PCIE_HHBM_CSR_REG(base)			((base) + 0x2e00)
+#define PCIE_HHBM_Q_BASE_REG(base)		((base) + 0x2e04)
+#define PCIE_HHBM_Q_LIMIT_REG(base)		((base) + 0x2e08)
+#define PCIE_HHBM_Q_WR_REG(base)		((base) + 0x2e0c)
+#define PCIE_HHBM_Q_RD_REG(base)		((base) + 0x2e10)
+#define PCIE_HHBM_POOL_DATA_0_H(base)		((base) + 0x2e90)
+#define PCIE_HHBM_CONFIG(base)			((base) + 0x2f9c)
+#define PCIE_HHBM_POOL_REQ_0(base)		((base) + 0x2f10)
+#define PCIE_HHBM_POOL_DATA_0(base)		((base) + 0x2f40)
+#define PCIE_HHBM_WATERMARK_MASKED_INT(base)	((base) + 0x2f68)
+#define PCIE_HHBM_WATERMARK_INT(base)		((base) + 0x2f6c)
+#define PCIE_HHBM_POOL_WATERMARK(base)		((base) + 0x2f70)
+#define PCIE_HHBM_POOL_OVERFLOW_CNT(base)	((base) + 0x2f90)
+#define PCIE_HHBM_POOL_UNDERFLOW_CNT(base)	((base) + 0x2f94)
+#define HBM_INT_STATUS(base)			((base) + 0x2f9c)
+#define PCIE_HHBM_POOL_CNFIG(base)		((base) + 0x2f9c)
+
+/* Pearl PCIe HBM bit field definitions */
+#define HHBM_CONFIG_SOFT_RESET			(BIT(8))
+#define HHBM_WR_REQ				(BIT(0))
+#define HHBM_RD_REQ				(BIT(1))
+#define HHBM_DONE				(BIT(31))
+#define HHBM_64BIT				(BIT(10))
+
+/* PCIe HDP interrupt status definition */
+#define PCIE_HDP_INT_EP_RXDMA		(BIT(0))
+#define PCIE_HDP_INT_HBM_UF		(BIT(1))
+#define PCIE_HDP_INT_RX_LEN_ERR		(BIT(2))
+#define PCIE_HDP_INT_RX_HDR_LEN_ERR	(BIT(3))
+#define PCIE_HDP_INT_EP_TXDMA		(BIT(12))
+#define PCIE_HDP_INT_HHBM_UF		(BIT(13))
+#define PCIE_HDP_INT_EP_TXEMPTY		(BIT(15))
+#define PCIE_HDP_INT_IPC		(BIT(29))
+
+/* PCIe interrupt status definition */
+#define PCIE_INT_MSI			(BIT(24))
+#define PCIE_INT_INTX			(BIT(23))
+
+/* PCIe legacy INTx */
+#define PEARL_PCIE_CFG0_OFFSET		(0x6C)
+#define PEARL_ASSERT_INTX		(BIT(9))
+
+/* SYS CTL regs */
+#define QTN_PEARL_SYSCTL_LHOST_IRQ_OFFSET	(0x001C)
+
+#define QTN_PEARL_IPC_IRQ_WORD(irq)	(BIT(irq) | BIT(irq + 16))
+#define QTN_PEARL_LHOST_IPC_IRQ		(6)
+#define QTN_PEARL_LHOST_EP_RESET	(7)
+
+#endif /* __PEARL_PCIE_H */

linux-7.2.3/drivers/net/wireless/quantenna/qtnfmac/pcie/topaz_pcie_ipc.h

@@ -0,0 +1,94 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Copyright (c) 2018 Quantenna Communications */
+
+#ifndef _QTN_FMAC_PCIE_IPC_H_
+#define _QTN_FMAC_PCIE_IPC_H_
+
+#include <linux/types.h>
+
+#include "shm_ipc_defs.h"
+
+/* EP/RC status and flags */
+#define QTN_BDA_PCIE_INIT		0x01
+#define QTN_BDA_PCIE_RDY		0x02
+#define QTN_BDA_FW_LOAD_RDY		0x03
+#define QTN_BDA_FW_LOAD_DONE		0x04
+#define QTN_BDA_FW_START		0x05
+#define QTN_BDA_FW_RUN			0x06
+#define QTN_BDA_FW_HOST_RDY		0x07
+#define QTN_BDA_FW_TARGET_RDY		0x11
+#define QTN_BDA_FW_TARGET_BOOT		0x12
+#define QTN_BDA_FW_FLASH_BOOT		0x13
+#define QTN_BDA_FW_QLINK_DONE		0x14
+#define QTN_BDA_FW_HOST_LOAD		0x08
+#define QTN_BDA_FW_BLOCK_DONE		0x09
+#define QTN_BDA_FW_BLOCK_RDY		0x0A
+#define QTN_BDA_FW_EP_RDY		0x0B
+#define QTN_BDA_FW_BLOCK_END		0x0C
+#define QTN_BDA_FW_CONFIG		0x0D
+#define QTN_BDA_FW_RUNNING		0x0E
+#define QTN_BDA_PCIE_FAIL		0x82
+#define QTN_BDA_FW_LOAD_FAIL		0x85
+
+#define QTN_BDA_RCMODE			BIT(1)
+#define QTN_BDA_MSI			BIT(2)
+#define QTN_BDA_HOST_CALCMD		BIT(3)
+#define QTN_BDA_FLASH_PRESENT		BIT(4)
+#define QTN_BDA_FLASH_BOOT		BIT(5)
+#define QTN_BDA_XMIT_UBOOT		BIT(6)
+#define QTN_BDA_HOST_QLINK_DRV		BIT(7)
+#define QTN_BDA_TARGET_FBOOT_ERR	BIT(8)
+#define QTN_BDA_TARGET_FWLOAD_ERR	BIT(9)
+#define QTN_BDA_HOST_NOFW_ERR		BIT(12)
+#define QTN_BDA_HOST_MEMALLOC_ERR	BIT(13)
+#define QTN_BDA_HOST_MEMMAP_ERR		BIT(14)
+#define QTN_BDA_VER(x)			(((x) >> 4) & 0xFF)
+#define QTN_BDA_ERROR_MASK		0xFF00
+
+/* registers and shmem address macros */
+#if BITS_PER_LONG == 64
+#define QTN_HOST_HI32(a)	((u32)(((u64)a) >> 32))
+#define QTN_HOST_LO32(a)	((u32)(((u64)a) & 0xffffffffUL))
+#define QTN_HOST_ADDR(h, l)	((((u64)h) << 32) | ((u64)l))
+#elif BITS_PER_LONG == 32
+#define QTN_HOST_HI32(a)	0
+#define QTN_HOST_LO32(a)	((u32)(((u32)a) & 0xffffffffUL))
+#define QTN_HOST_ADDR(h, l)	((u32)l)
+#else
+#error Unexpected BITS_PER_LONG value
+#endif
+
+#define QTN_PCIE_BDA_VERSION		0x1001
+
+#define PCIE_BDA_NAMELEN		32
+
+#define QTN_PCIE_RC_TX_QUEUE_LEN	256
+#define QTN_PCIE_TX_VALID_PKT		0x80000000
+#define QTN_PCIE_PKT_LEN_MASK		0xffff
+
+#define QTN_BD_EMPTY		((uint32_t)0x00000001)
+#define QTN_BD_WRAP		((uint32_t)0x00000002)
+#define QTN_BD_MASK_LEN		((uint32_t)0xFFFF0000)
+#define QTN_BD_MASK_OFFSET	((uint32_t)0x0000FF00)
+
+#define QTN_GET_LEN(x)		(((x) >> 16) & 0xFFFF)
+#define QTN_GET_OFFSET(x)	(((x) >> 8) & 0xFF)
+#define QTN_SET_LEN(len)	(((len) & 0xFFFF) << 16)
+#define QTN_SET_OFFSET(of)	(((of) & 0xFF) << 8)
+
+#define RX_DONE_INTR_MSK	((0x1 << 6) - 1)
+
+#define PCIE_DMA_OFFSET_ERROR		0xFFFF
+#define PCIE_DMA_OFFSET_ERROR_MASK	0xFFFF
+
+#define QTN_PCI_ENDIAN_DETECT_DATA	0x12345678
+#define QTN_PCI_ENDIAN_REVERSE_DATA	0x78563412
+#define QTN_PCI_ENDIAN_VALID_STATUS	0x3c3c3c3c
+#define QTN_PCI_ENDIAN_INVALID_STATUS	0
+#define QTN_PCI_LITTLE_ENDIAN		0
+#define QTN_PCI_BIG_ENDIAN		0xffffffff
+
+#define NBLOCKS(size, blksize)		\
+	((size) / (blksize) + (((size) % (blksize) > 0) ? 1 : 0))
+
+#endif /* _QTN_FMAC_PCIE_IPC_H_ */

linux-7.2.3/drivers/net/wireless/quantenna/qtnfmac/pcie/topaz_pcie_regs.h

@@ -0,0 +1,45 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Copyright (c) 2018 Quantenna Communications */
+
+#ifndef __TOPAZ_PCIE_H
+#define __TOPAZ_PCIE_H
+
+/* Topaz PCIe DMA registers */
+#define PCIE_DMA_WR_INTR_STATUS(base)		((base) + 0x9bc)
+#define PCIE_DMA_WR_INTR_MASK(base)		((base) + 0x9c4)
+#define PCIE_DMA_WR_INTR_CLR(base)		((base) + 0x9c8)
+#define PCIE_DMA_WR_ERR_STATUS(base)		((base) + 0x9cc)
+#define PCIE_DMA_WR_DONE_IMWR_ADDR_LOW(base)	((base) + 0x9D0)
+#define PCIE_DMA_WR_DONE_IMWR_ADDR_HIGH(base)	((base) + 0x9d4)
+
+#define PCIE_DMA_RD_INTR_STATUS(base)		((base) + 0x310)
+#define PCIE_DMA_RD_INTR_MASK(base)		((base) + 0x319)
+#define PCIE_DMA_RD_INTR_CLR(base)		((base) + 0x31c)
+#define PCIE_DMA_RD_ERR_STATUS_LOW(base)	((base) + 0x324)
+#define PCIE_DMA_RD_ERR_STATUS_HIGH(base)	((base) + 0x328)
+#define PCIE_DMA_RD_DONE_IMWR_ADDR_LOW(base)	((base) + 0x33c)
+#define PCIE_DMA_RD_DONE_IMWR_ADDR_HIGH(base)	((base) + 0x340)
+
+/* Topaz LHost IPC4 interrupt */
+#define TOPAZ_LH_IPC4_INT(base)			((base) + 0x13C)
+#define TOPAZ_LH_IPC4_INT_MASK(base)		((base) + 0x140)
+
+#define TOPAZ_RC_TX_DONE_IRQ			(0)
+#define TOPAZ_RC_RST_EP_IRQ			(1)
+#define TOPAZ_RC_TX_STOP_IRQ			(2)
+#define TOPAZ_RC_RX_DONE_IRQ			(3)
+#define TOPAZ_RC_PM_EP_IRQ			(4)
+
+/* Topaz LHost M2L interrupt */
+#define TOPAZ_CTL_M2L_INT(base)			((base) + 0x2C)
+#define TOPAZ_CTL_M2L_INT_MASK(base)		((base) + 0x30)
+
+#define TOPAZ_RC_CTRL_IRQ			(6)
+
+#define TOPAZ_IPC_IRQ_WORD(irq)			(BIT(irq) | BIT(irq + 16))
+
+/* PCIe legacy INTx */
+#define TOPAZ_PCIE_CFG0_OFFSET	(0x6C)
+#define TOPAZ_ASSERT_INTX	BIT(9)
+
+#endif /* __TOPAZ_PCIE_H */

linux-7.2.3/drivers/net/wireless/quantenna/qtnfmac/qlink_util.c

@@ -0,0 +1,303 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Copyright (c) 2015-2016 Quantenna Communications. All rights reserved. */
+
+#include <linux/nl80211.h>
+
+#include "qlink_util.h"
+
+u16 qlink_iface_type_to_nl_mask(u16 qlink_type)
+{
+	u16 result = 0;
+
+	switch (qlink_type) {
+	case QLINK_IFTYPE_AP:
+		result |= BIT(NL80211_IFTYPE_AP);
+		break;
+	case QLINK_IFTYPE_STATION:
+		result |= BIT(NL80211_IFTYPE_STATION);
+		break;
+	case QLINK_IFTYPE_ADHOC:
+		result |= BIT(NL80211_IFTYPE_ADHOC);
+		break;
+	case QLINK_IFTYPE_MONITOR:
+		result |= BIT(NL80211_IFTYPE_MONITOR);
+		break;
+	case QLINK_IFTYPE_WDS:
+		result |= BIT(NL80211_IFTYPE_WDS);
+		break;
+	case QLINK_IFTYPE_AP_VLAN:
+		result |= BIT(NL80211_IFTYPE_AP_VLAN);
+		break;
+	}
+
+	return result;
+}
+
+u8 qlink_chan_width_mask_to_nl(u16 qlink_mask)
+{
+	u8 result = 0;
+
+	if (qlink_mask & BIT(QLINK_CHAN_WIDTH_5))
+		result |= BIT(NL80211_CHAN_WIDTH_5);
+
+	if (qlink_mask & BIT(QLINK_CHAN_WIDTH_10))
+		result |= BIT(NL80211_CHAN_WIDTH_10);
+
+	if (qlink_mask & BIT(QLINK_CHAN_WIDTH_20_NOHT))
+		result |= BIT(NL80211_CHAN_WIDTH_20_NOHT);
+
+	if (qlink_mask & BIT(QLINK_CHAN_WIDTH_20))
+		result |= BIT(NL80211_CHAN_WIDTH_20);
+
+	if (qlink_mask & BIT(QLINK_CHAN_WIDTH_40))
+		result |= BIT(NL80211_CHAN_WIDTH_40);
+
+	if (qlink_mask & BIT(QLINK_CHAN_WIDTH_80))
+		result |= BIT(NL80211_CHAN_WIDTH_80);
+
+	if (qlink_mask & BIT(QLINK_CHAN_WIDTH_80P80))
+		result |= BIT(NL80211_CHAN_WIDTH_80P80);
+
+	if (qlink_mask & BIT(QLINK_CHAN_WIDTH_160))
+		result |= BIT(NL80211_CHAN_WIDTH_160);
+
+	return result;
+}
+
+static enum nl80211_chan_width qlink_chanwidth_to_nl(u8 qlw)
+{
+	switch (qlw) {
+	case QLINK_CHAN_WIDTH_20_NOHT:
+		return NL80211_CHAN_WIDTH_20_NOHT;
+	case QLINK_CHAN_WIDTH_20:
+		return NL80211_CHAN_WIDTH_20;
+	case QLINK_CHAN_WIDTH_40:
+		return NL80211_CHAN_WIDTH_40;
+	case QLINK_CHAN_WIDTH_80:
+		return NL80211_CHAN_WIDTH_80;
+	case QLINK_CHAN_WIDTH_80P80:
+		return NL80211_CHAN_WIDTH_80P80;
+	case QLINK_CHAN_WIDTH_160:
+		return NL80211_CHAN_WIDTH_160;
+	case QLINK_CHAN_WIDTH_5:
+		return NL80211_CHAN_WIDTH_5;
+	case QLINK_CHAN_WIDTH_10:
+		return NL80211_CHAN_WIDTH_10;
+	default:
+		return -1;
+	}
+}
+
+static u8 qlink_chanwidth_nl_to_qlink(enum nl80211_chan_width nlwidth)
+{
+	switch (nlwidth) {
+	case NL80211_CHAN_WIDTH_20_NOHT:
+		return QLINK_CHAN_WIDTH_20_NOHT;
+	case NL80211_CHAN_WIDTH_20:
+		return QLINK_CHAN_WIDTH_20;
+	case NL80211_CHAN_WIDTH_40:
+		return QLINK_CHAN_WIDTH_40;
+	case NL80211_CHAN_WIDTH_80:
+		return QLINK_CHAN_WIDTH_80;
+	case NL80211_CHAN_WIDTH_80P80:
+		return QLINK_CHAN_WIDTH_80P80;
+	case NL80211_CHAN_WIDTH_160:
+		return QLINK_CHAN_WIDTH_160;
+	case NL80211_CHAN_WIDTH_5:
+		return QLINK_CHAN_WIDTH_5;
+	case NL80211_CHAN_WIDTH_10:
+		return QLINK_CHAN_WIDTH_10;
+	default:
+		return -1;
+	}
+}
+
+void qlink_chandef_q2cfg(struct wiphy *wiphy,
+			 const struct qlink_chandef *qch,
+			 struct cfg80211_chan_def *chdef)
+{
+	struct ieee80211_channel *chan;
+
+	chan = ieee80211_get_channel(wiphy, le16_to_cpu(qch->chan.center_freq));
+
+	chdef->chan = chan;
+	chdef->center_freq1 = le16_to_cpu(qch->center_freq1);
+	chdef->center_freq2 = le16_to_cpu(qch->center_freq2);
+	chdef->width = qlink_chanwidth_to_nl(qch->width);
+	chdef->edmg.bw_config = 0;
+	chdef->edmg.channels = 0;
+}
+
+void qlink_chandef_cfg2q(const struct cfg80211_chan_def *chdef,
+			 struct qlink_chandef *qch)
+{
+	struct ieee80211_channel *chan = chdef->chan;
+
+	qch->chan.hw_value = cpu_to_le16(chan->hw_value);
+	qch->chan.center_freq = cpu_to_le16(chan->center_freq);
+	qch->chan.flags = cpu_to_le32(chan->flags);
+
+	qch->center_freq1 = cpu_to_le16(chdef->center_freq1);
+	qch->center_freq2 = cpu_to_le16(chdef->center_freq2);
+	qch->width = qlink_chanwidth_nl_to_qlink(chdef->width);
+}
+
+enum qlink_hidden_ssid qlink_hidden_ssid_nl2q(enum nl80211_hidden_ssid nl_val)
+{
+	switch (nl_val) {
+	case NL80211_HIDDEN_SSID_ZERO_LEN:
+		return QLINK_HIDDEN_SSID_ZERO_LEN;
+	case NL80211_HIDDEN_SSID_ZERO_CONTENTS:
+		return QLINK_HIDDEN_SSID_ZERO_CONTENTS;
+	case NL80211_HIDDEN_SSID_NOT_IN_USE:
+	default:
+		return QLINK_HIDDEN_SSID_NOT_IN_USE;
+	}
+}
+
+bool qtnf_utils_is_bit_set(const u8 *arr, unsigned int bit,
+			   unsigned int arr_max_len)
+{
+	unsigned int idx = bit / BITS_PER_BYTE;
+	u8 mask = 1 << (bit - (idx * BITS_PER_BYTE));
+
+	if (idx >= arr_max_len)
+		return false;
+
+	return arr[idx] & mask;
+}
+
+void qlink_acl_data_cfg2q(const struct cfg80211_acl_data *acl,
+			  struct qlink_acl_data *qacl)
+{
+	switch (acl->acl_policy) {
+	case NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED:
+		qacl->policy =
+			cpu_to_le32(QLINK_ACL_POLICY_ACCEPT_UNLESS_LISTED);
+		break;
+	case NL80211_ACL_POLICY_DENY_UNLESS_LISTED:
+		qacl->policy = cpu_to_le32(QLINK_ACL_POLICY_DENY_UNLESS_LISTED);
+		break;
+	}
+
+	qacl->num_entries = cpu_to_le32(acl->n_acl_entries);
+	memcpy(qacl->mac_addrs, acl->mac_addrs,
+	       acl->n_acl_entries * sizeof(*qacl->mac_addrs));
+}
+
+enum qlink_band qlink_utils_band_cfg2q(enum nl80211_band band)
+{
+	switch (band) {
+	case NL80211_BAND_2GHZ:
+		return QLINK_BAND_2GHZ;
+	case NL80211_BAND_5GHZ:
+		return QLINK_BAND_5GHZ;
+	case NL80211_BAND_60GHZ:
+		return QLINK_BAND_60GHZ;
+	default:
+		return -EINVAL;
+	}
+}
+
+enum qlink_dfs_state qlink_utils_dfs_state_cfg2q(enum nl80211_dfs_state state)
+{
+	switch (state) {
+	case NL80211_DFS_USABLE:
+		return QLINK_DFS_USABLE;
+	case NL80211_DFS_AVAILABLE:
+		return QLINK_DFS_AVAILABLE;
+	case NL80211_DFS_UNAVAILABLE:
+	default:
+		return QLINK_DFS_UNAVAILABLE;
+	}
+}
+
+u32 qlink_utils_chflags_cfg2q(u32 cfgflags)
+{
+	u32 flags = 0;
+
+	if (cfgflags & IEEE80211_CHAN_DISABLED)
+		flags |= QLINK_CHAN_DISABLED;
+
+	if (cfgflags & IEEE80211_CHAN_NO_IR)
+		flags |= QLINK_CHAN_NO_IR;
+
+	if (cfgflags & IEEE80211_CHAN_RADAR)
+		flags |= QLINK_CHAN_RADAR;
+
+	if (cfgflags & IEEE80211_CHAN_NO_HT40PLUS)
+		flags |= QLINK_CHAN_NO_HT40PLUS;
+
+	if (cfgflags & IEEE80211_CHAN_NO_HT40MINUS)
+		flags |= QLINK_CHAN_NO_HT40MINUS;
+
+	if (cfgflags & IEEE80211_CHAN_NO_80MHZ)
+		flags |= QLINK_CHAN_NO_80MHZ;
+
+	if (cfgflags & IEEE80211_CHAN_NO_160MHZ)
+		flags |= QLINK_CHAN_NO_160MHZ;
+
+	return flags;
+}
+
+static u32 qtnf_reg_rule_flags_parse(u32 qflags)
+{
+	u32 flags = 0;
+
+	if (qflags & QLINK_RRF_NO_OFDM)
+		flags |= NL80211_RRF_NO_OFDM;
+
+	if (qflags & QLINK_RRF_NO_CCK)
+		flags |= NL80211_RRF_NO_CCK;
+
+	if (qflags & QLINK_RRF_NO_INDOOR)
+		flags |= NL80211_RRF_NO_INDOOR;
+
+	if (qflags & QLINK_RRF_NO_OUTDOOR)
+		flags |= NL80211_RRF_NO_OUTDOOR;
+
+	if (qflags & QLINK_RRF_DFS)
+		flags |= NL80211_RRF_DFS;
+
+	if (qflags & QLINK_RRF_PTP_ONLY)
+		flags |= NL80211_RRF_PTP_ONLY;
+
+	if (qflags & QLINK_RRF_PTMP_ONLY)
+		flags |= NL80211_RRF_PTMP_ONLY;
+
+	if (qflags & QLINK_RRF_NO_IR)
+		flags |= NL80211_RRF_NO_IR;
+
+	if (qflags & QLINK_RRF_AUTO_BW)
+		flags |= NL80211_RRF_AUTO_BW;
+
+	if (qflags & QLINK_RRF_IR_CONCURRENT)
+		flags |= NL80211_RRF_IR_CONCURRENT;
+
+	if (qflags & QLINK_RRF_NO_HT40MINUS)
+		flags |= NL80211_RRF_NO_HT40MINUS;
+
+	if (qflags & QLINK_RRF_NO_HT40PLUS)
+		flags |= NL80211_RRF_NO_HT40PLUS;
+
+	if (qflags & QLINK_RRF_NO_80MHZ)
+		flags |= NL80211_RRF_NO_80MHZ;
+
+	if (qflags & QLINK_RRF_NO_160MHZ)
+		flags |= NL80211_RRF_NO_160MHZ;
+
+	return flags;
+}
+
+void qlink_utils_regrule_q2nl(struct ieee80211_reg_rule *rule,
+			      const struct qlink_tlv_reg_rule *tlv)
+{
+	rule->freq_range.start_freq_khz = le32_to_cpu(tlv->start_freq_khz);
+	rule->freq_range.end_freq_khz = le32_to_cpu(tlv->end_freq_khz);
+	rule->freq_range.max_bandwidth_khz =
+		le32_to_cpu(tlv->max_bandwidth_khz);
+	rule->power_rule.max_antenna_gain = le32_to_cpu(tlv->max_antenna_gain);
+	rule->power_rule.max_eirp = le32_to_cpu(tlv->max_eirp);
+	rule->dfs_cac_ms = le32_to_cpu(tlv->dfs_cac_ms);
+	rule->flags = qtnf_reg_rule_flags_parse(le32_to_cpu(tlv->flags));
+}

linux-7.2.3/drivers/net/wireless/quantenna/qtnfmac/qlink_util.h

@@ -0,0 +1,73 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Copyright (c) 2015-2016 Quantenna Communications. All rights reserved. */
+
+#ifndef _QTN_FMAC_QLINK_UTIL_H_
+#define _QTN_FMAC_QLINK_UTIL_H_
+
+#include <linux/types.h>
+#include <linux/skbuff.h>
+#include <net/cfg80211.h>
+
+#include "qlink.h"
+
+static inline void
+qtnf_cmd_skb_put_buffer(struct sk_buff *skb, const u8 *buf_src, size_t len)
+{
+	skb_put_data(skb, buf_src, len);
+}
+
+static inline void qtnf_cmd_skb_put_tlv_arr(struct sk_buff *skb,
+					    u16 tlv_id, const u8 arr[],
+					    size_t arr_len)
+{
+	struct qlink_tlv_hdr *hdr;
+
+	hdr = skb_put(skb, sizeof(*hdr) + round_up(arr_len, QLINK_ALIGN));
+	hdr->type = cpu_to_le16(tlv_id);
+	hdr->len = cpu_to_le16(arr_len);
+	memcpy(hdr->val, arr, arr_len);
+}
+
+static inline void qtnf_cmd_skb_put_tlv_u32(struct sk_buff *skb,
+					    u16 tlv_id, u32 value)
+{
+	struct qlink_tlv_hdr *hdr = skb_put(skb, sizeof(*hdr) + sizeof(value));
+	__le32 tmp = cpu_to_le32(value);
+
+	hdr->type = cpu_to_le16(tlv_id);
+	hdr->len = cpu_to_le16(sizeof(value));
+	memcpy(hdr->val, &tmp, sizeof(tmp));
+}
+
+u16 qlink_iface_type_to_nl_mask(u16 qlink_type);
+u8 qlink_chan_width_mask_to_nl(u16 qlink_mask);
+void qlink_chandef_q2cfg(struct wiphy *wiphy,
+			 const struct qlink_chandef *qch,
+			 struct cfg80211_chan_def *chdef);
+void qlink_chandef_cfg2q(const struct cfg80211_chan_def *chdef,
+			 struct qlink_chandef *qch);
+enum qlink_hidden_ssid qlink_hidden_ssid_nl2q(enum nl80211_hidden_ssid nl_val);
+bool qtnf_utils_is_bit_set(const u8 *arr, unsigned int bit,
+			   unsigned int arr_max_len);
+void qlink_acl_data_cfg2q(const struct cfg80211_acl_data *acl,
+			  struct qlink_acl_data *qacl);
+enum qlink_band qlink_utils_band_cfg2q(enum nl80211_band band);
+enum qlink_dfs_state qlink_utils_dfs_state_cfg2q(enum nl80211_dfs_state state);
+u32 qlink_utils_chflags_cfg2q(u32 cfgflags);
+void qlink_utils_regrule_q2nl(struct ieee80211_reg_rule *rule,
+			      const struct qlink_tlv_reg_rule *tlv_rule);
+
+#define qlink_for_each_tlv(_tlv, _start, _datalen)			\
+	for (_tlv = (const struct qlink_tlv_hdr *)(_start);		\
+	     (const u8 *)(_start) + (_datalen) - (const u8 *)_tlv >=	\
+		(int)sizeof(*_tlv) &&					\
+	     (const u8 *)(_start) + (_datalen) - (const u8 *)_tlv >=	\
+		(int)sizeof(*_tlv) + le16_to_cpu(_tlv->len);		\
+	     _tlv = (const struct qlink_tlv_hdr *)(_tlv->val +		\
+		round_up(le16_to_cpu(_tlv->len), QLINK_ALIGN)))
+
+#define qlink_tlv_parsing_ok(_tlv_last, _start, _datalen)	\
+	((const u8 *)(_tlv_last) == \
+		(const u8 *)(_start) + round_up(_datalen, QLINK_ALIGN))
+
+#endif /* _QTN_FMAC_QLINK_UTIL_H_ */

linux-7.2.3/drivers/net/wireless/quantenna/qtnfmac/qtn_hw_ids.h

@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Copyright (c) 2015-2016 Quantenna Communications. All rights reserved. */
+
+#ifndef	_QTN_HW_IDS_H_
+#define	_QTN_HW_IDS_H_
+
+#include <linux/pci_ids.h>
+
+#define PCIE_VENDOR_ID_QUANTENNA	(0x1bb5)
+
+/* PCIE Device IDs */
+
+#define	PCIE_DEVICE_ID_QSR		(0x0008)
+
+#define QTN_REG_SYS_CTRL_CSR		0x14
+#define QTN_CHIP_ID_MASK		0xF0
+#define QTN_CHIP_ID_TOPAZ		0x40
+#define QTN_CHIP_ID_PEARL		0x50
+#define QTN_CHIP_ID_PEARL_B		0x60
+#define QTN_CHIP_ID_PEARL_C		0x70
+
+/* FW names */
+
+#define QTN_PCI_PEARL_FW_NAME		"qtn/fmac_qsr10g.img"
+#define QTN_PCI_TOPAZ_FW_NAME		"qtn/fmac_qsr1000.img"
+#define QTN_PCI_TOPAZ_BOOTLD_NAME	"qtn/uboot_qsr1000.img"
+
+static inline unsigned int qtnf_chip_id_get(const void __iomem *regs_base)
+{
+	u32 board_rev = readl(regs_base + QTN_REG_SYS_CTRL_CSR);
+
+	return board_rev & QTN_CHIP_ID_MASK;
+}
+
+#endif	/* _QTN_HW_IDS_H_ */

linux-7.2.3/drivers/net/wireless/quantenna/qtnfmac/shm_ipc.c

@@ -0,0 +1,162 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Copyright (c) 2015-2016 Quantenna Communications. All rights reserved. */
+
+#include <linux/types.h>
+#include <linux/io.h>
+
+#include "shm_ipc.h"
+
+#undef pr_fmt
+#define pr_fmt(fmt)	"qtnfmac shm_ipc: %s: " fmt, __func__
+
+static bool qtnf_shm_ipc_has_new_data(struct qtnf_shm_ipc *ipc)
+{
+	const u32 flags = readl(&ipc->shm_region->headroom.hdr.flags);
+
+	return (flags & QTNF_SHM_IPC_NEW_DATA);
+}
+
+static void qtnf_shm_handle_new_data(struct qtnf_shm_ipc *ipc)
+{
+	size_t size;
+	bool rx_buff_ok = true;
+	struct qtnf_shm_ipc_region_header __iomem *shm_reg_hdr;
+
+	shm_reg_hdr = &ipc->shm_region->headroom.hdr;
+
+	size = readw(&shm_reg_hdr->data_len);
+
+	if (unlikely(size == 0 || size > QTN_IPC_MAX_DATA_SZ)) {
+		pr_err("wrong rx packet size: %zu\n", size);
+		rx_buff_ok = false;
+	}
+
+	if (likely(rx_buff_ok)) {
+		ipc->rx_packet_count++;
+		ipc->rx_callback.fn(ipc->rx_callback.arg,
+				    ipc->shm_region->data, size);
+	}
+
+	writel(QTNF_SHM_IPC_ACK, &shm_reg_hdr->flags);
+	readl(&shm_reg_hdr->flags); /* flush PCIe write */
+
+	ipc->interrupt.fn(ipc->interrupt.arg);
+}
+
+static void qtnf_shm_ipc_irq_work(struct work_struct *work)
+{
+	struct qtnf_shm_ipc *ipc = container_of(work, struct qtnf_shm_ipc,
+						irq_work);
+
+	while (qtnf_shm_ipc_has_new_data(ipc))
+		qtnf_shm_handle_new_data(ipc);
+}
+
+static void qtnf_shm_ipc_irq_inbound_handler(struct qtnf_shm_ipc *ipc)
+{
+	u32 flags;
+
+	flags = readl(&ipc->shm_region->headroom.hdr.flags);
+
+	if (flags & QTNF_SHM_IPC_NEW_DATA)
+		queue_work(ipc->workqueue, &ipc->irq_work);
+}
+
+static void qtnf_shm_ipc_irq_outbound_handler(struct qtnf_shm_ipc *ipc)
+{
+	u32 flags;
+
+	if (!READ_ONCE(ipc->waiting_for_ack))
+		return;
+
+	flags = readl(&ipc->shm_region->headroom.hdr.flags);
+
+	if (flags & QTNF_SHM_IPC_ACK) {
+		WRITE_ONCE(ipc->waiting_for_ack, 0);
+		complete(&ipc->tx_completion);
+	}
+}
+
+int qtnf_shm_ipc_init(struct qtnf_shm_ipc *ipc,
+		      enum qtnf_shm_ipc_direction direction,
+		      struct qtnf_shm_ipc_region __iomem *shm_region,
+		      struct workqueue_struct *workqueue,
+		      const struct qtnf_shm_ipc_int *interrupt,
+		      const struct qtnf_shm_ipc_rx_callback *rx_callback)
+{
+	BUILD_BUG_ON(offsetof(struct qtnf_shm_ipc_region, data) !=
+		     QTN_IPC_REG_HDR_SZ);
+	BUILD_BUG_ON(sizeof(struct qtnf_shm_ipc_region) > QTN_IPC_REG_SZ);
+
+	ipc->shm_region = shm_region;
+	ipc->direction = direction;
+	ipc->interrupt = *interrupt;
+	ipc->rx_callback = *rx_callback;
+	ipc->tx_packet_count = 0;
+	ipc->rx_packet_count = 0;
+	ipc->workqueue = workqueue;
+	ipc->waiting_for_ack = 0;
+	ipc->tx_timeout_count = 0;
+
+	switch (direction) {
+	case QTNF_SHM_IPC_OUTBOUND:
+		ipc->irq_handler = qtnf_shm_ipc_irq_outbound_handler;
+		break;
+	case QTNF_SHM_IPC_INBOUND:
+		ipc->irq_handler = qtnf_shm_ipc_irq_inbound_handler;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	INIT_WORK(&ipc->irq_work, qtnf_shm_ipc_irq_work);
+	init_completion(&ipc->tx_completion);
+
+	return 0;
+}
+
+void qtnf_shm_ipc_free(struct qtnf_shm_ipc *ipc)
+{
+	complete_all(&ipc->tx_completion);
+}
+
+int qtnf_shm_ipc_send(struct qtnf_shm_ipc *ipc, const u8 *buf, size_t size)
+{
+	int ret = 0;
+	struct qtnf_shm_ipc_region_header __iomem *shm_reg_hdr;
+
+	shm_reg_hdr = &ipc->shm_region->headroom.hdr;
+
+	if (unlikely(size > QTN_IPC_MAX_DATA_SZ))
+		return -E2BIG;
+
+	ipc->tx_packet_count++;
+
+	writew(size, &shm_reg_hdr->data_len);
+	memcpy_toio(ipc->shm_region->data, buf, size);
+
+	/* sync previous writes before proceeding */
+	dma_wmb();
+
+	WRITE_ONCE(ipc->waiting_for_ack, 1);
+
+	/* sync previous memory write before announcing new data ready */
+	wmb();
+
+	writel(QTNF_SHM_IPC_NEW_DATA, &shm_reg_hdr->flags);
+	readl(&shm_reg_hdr->flags); /* flush PCIe write */
+
+	ipc->interrupt.fn(ipc->interrupt.arg);
+
+	if (!wait_for_completion_timeout(&ipc->tx_completion,
+					 QTN_SHM_IPC_ACK_TIMEOUT)) {
+		ret = -ETIMEDOUT;
+		ipc->tx_timeout_count++;
+		pr_err("TX ACK timeout\n");
+	}
+
+	/* now we're not waiting for ACK even in case of timeout */
+	WRITE_ONCE(ipc->waiting_for_ack, 0);
+
+	return ret;
+}

linux-7.2.3/drivers/net/wireless/quantenna/qtnfmac/shm_ipc.h

@@ -0,0 +1,65 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Copyright (c) 2015-2016 Quantenna Communications. All rights reserved. */
+
+#ifndef _QTN_FMAC_SHM_IPC_H_
+#define _QTN_FMAC_SHM_IPC_H_
+
+#include <linux/workqueue.h>
+#include <linux/completion.h>
+#include <linux/mutex.h>
+#include <linux/spinlock.h>
+
+#include "shm_ipc_defs.h"
+
+#define QTN_SHM_IPC_ACK_TIMEOUT		(2 * HZ)
+
+struct qtnf_shm_ipc_int {
+	void (*fn)(void *arg);
+	void *arg;
+};
+
+struct qtnf_shm_ipc_rx_callback {
+	void (*fn)(void *arg, const u8 __iomem *buf, size_t len);
+	void *arg;
+};
+
+enum qtnf_shm_ipc_direction {
+	QTNF_SHM_IPC_OUTBOUND		= BIT(0),
+	QTNF_SHM_IPC_INBOUND		= BIT(1),
+};
+
+struct qtnf_shm_ipc {
+	struct qtnf_shm_ipc_region __iomem *shm_region;
+	enum qtnf_shm_ipc_direction direction;
+	size_t tx_packet_count;
+	size_t rx_packet_count;
+
+	size_t tx_timeout_count;
+
+	u8 waiting_for_ack;
+
+	struct qtnf_shm_ipc_int interrupt;
+	struct qtnf_shm_ipc_rx_callback rx_callback;
+
+	void (*irq_handler)(struct qtnf_shm_ipc *ipc);
+
+	struct workqueue_struct *workqueue;
+	struct work_struct irq_work;
+	struct completion tx_completion;
+};
+
+int qtnf_shm_ipc_init(struct qtnf_shm_ipc *ipc,
+		      enum qtnf_shm_ipc_direction direction,
+		      struct qtnf_shm_ipc_region __iomem *shm_region,
+		      struct workqueue_struct *workqueue,
+		      const struct qtnf_shm_ipc_int *interrupt,
+		      const struct qtnf_shm_ipc_rx_callback *rx_callback);
+void qtnf_shm_ipc_free(struct qtnf_shm_ipc *ipc);
+int qtnf_shm_ipc_send(struct qtnf_shm_ipc *ipc, const u8 *buf, size_t size);
+
+static inline void qtnf_shm_ipc_irq_handler(struct qtnf_shm_ipc *ipc)
+{
+	ipc->irq_handler(ipc);
+}
+
+#endif /* _QTN_FMAC_SHM_IPC_H_ */

linux-7.2.3/drivers/net/wireless/quantenna/qtnfmac/shm_ipc_defs.h

@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Copyright (c) 2015-2016 Quantenna Communications. All rights reserved. */
+
+#ifndef _QTN_FMAC_SHM_IPC_DEFS_H_
+#define _QTN_FMAC_SHM_IPC_DEFS_H_
+
+#include <linux/types.h>
+
+#define QTN_IPC_REG_HDR_SZ	(32)
+#define QTN_IPC_REG_SZ		(4096)
+#define QTN_IPC_MAX_DATA_SZ	(QTN_IPC_REG_SZ - QTN_IPC_REG_HDR_SZ)
+
+enum qtnf_shm_ipc_region_flags {
+	QTNF_SHM_IPC_NEW_DATA		= BIT(0),
+	QTNF_SHM_IPC_ACK		= BIT(1),
+};
+
+struct qtnf_shm_ipc_region_header {
+	__le32 flags;
+	__le16 data_len;
+} __packed;
+
+union qtnf_shm_ipc_region_headroom {
+	struct qtnf_shm_ipc_region_header hdr;
+	u8 headroom[QTN_IPC_REG_HDR_SZ];
+} __packed;
+
+struct qtnf_shm_ipc_region {
+	union qtnf_shm_ipc_region_headroom headroom;
+	u8 data[QTN_IPC_MAX_DATA_SZ];
+} __packed;
+
+#endif /* _QTN_FMAC_SHM_IPC_DEFS_H_ */

linux-7.2.3/drivers/net/wireless/quantenna/qtnfmac/switchdev.h

@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Copyright (c) 2019 Quantenna Communications. All rights reserved. */
+
+#ifndef QTNFMAC_SWITCHDEV_H_
+#define QTNFMAC_SWITCHDEV_H_
+
+#include <linux/skbuff.h>
+
+#ifdef CONFIG_NET_SWITCHDEV
+
+static inline void qtnfmac_switch_mark_skb_flooded(struct sk_buff *skb)
+{
+	skb->offload_fwd_mark = 1;
+}
+
+#else
+
+static inline void qtnfmac_switch_mark_skb_flooded(struct sk_buff *skb)
+{
+}
+
+#endif
+
+#endif /* QTNFMAC_SWITCHDEV_H_ */

linux-7.2.3/drivers/net/wireless/quantenna/qtnfmac/trans.c

@@ -0,0 +1,213 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Copyright (c) 2015-2016 Quantenna Communications. All rights reserved. */
+
+#include <linux/types.h>
+#include <linux/export.h>
+#include <linux/slab.h>
+
+#include "core.h"
+#include "commands.h"
+#include "event.h"
+#include "bus.h"
+
+#define QTNF_DEF_SYNC_CMD_TIMEOUT	(5 * HZ)
+
+int qtnf_trans_send_cmd_with_resp(struct qtnf_bus *bus, struct sk_buff *cmd_skb,
+				  struct sk_buff **response_skb)
+{
+	struct qtnf_cmd_ctl_node *ctl_node = &bus->trans.curr_cmd;
+	struct qlink_cmd *cmd = (void *)cmd_skb->data;
+	int ret = 0;
+	long status;
+	bool resp_not_handled = true;
+	struct sk_buff *resp_skb = NULL;
+
+	if (unlikely(!response_skb)) {
+		dev_kfree_skb(cmd_skb);
+		return -EFAULT;
+	}
+
+	spin_lock(&ctl_node->resp_lock);
+	ctl_node->seq_num++;
+	cmd->seq_num = cpu_to_le16(ctl_node->seq_num);
+	WARN(ctl_node->resp_skb, "qtnfmac: response skb not empty\n");
+	ctl_node->waiting_for_resp = true;
+	spin_unlock(&ctl_node->resp_lock);
+
+	ret = qtnf_bus_control_tx(bus, cmd_skb);
+	dev_kfree_skb(cmd_skb);
+
+	if (unlikely(ret))
+		goto out;
+
+	status = wait_for_completion_interruptible_timeout(
+						&ctl_node->cmd_resp_completion,
+						QTNF_DEF_SYNC_CMD_TIMEOUT);
+
+	spin_lock(&ctl_node->resp_lock);
+	resp_not_handled = ctl_node->waiting_for_resp;
+	resp_skb = ctl_node->resp_skb;
+	ctl_node->resp_skb = NULL;
+	ctl_node->waiting_for_resp = false;
+	spin_unlock(&ctl_node->resp_lock);
+
+	if (unlikely(status <= 0)) {
+		if (status == 0) {
+			ret = -ETIMEDOUT;
+			pr_err("response timeout\n");
+		} else {
+			ret = -EINTR;
+			pr_debug("interrupted\n");
+		}
+	}
+
+	if (unlikely(!resp_skb || resp_not_handled)) {
+		if (!ret)
+			ret = -EFAULT;
+
+		goto out;
+	}
+
+	ret = 0;
+	*response_skb = resp_skb;
+
+out:
+	if (unlikely(resp_skb && resp_not_handled))
+		dev_kfree_skb(resp_skb);
+
+	return ret;
+}
+
+static void qtnf_trans_signal_cmdresp(struct qtnf_bus *bus, struct sk_buff *skb)
+{
+	struct qtnf_cmd_ctl_node *ctl_node = &bus->trans.curr_cmd;
+	const struct qlink_resp *resp = (const struct qlink_resp *)skb->data;
+	const u16 recvd_seq_num = le16_to_cpu(resp->seq_num);
+
+	spin_lock(&ctl_node->resp_lock);
+
+	if (unlikely(!ctl_node->waiting_for_resp)) {
+		pr_err("unexpected response\n");
+		goto out_err;
+	}
+
+	if (unlikely(recvd_seq_num != ctl_node->seq_num)) {
+		pr_err("seq num mismatch\n");
+		goto out_err;
+	}
+
+	ctl_node->resp_skb = skb;
+	ctl_node->waiting_for_resp = false;
+
+	spin_unlock(&ctl_node->resp_lock);
+
+	complete(&ctl_node->cmd_resp_completion);
+	return;
+
+out_err:
+	spin_unlock(&ctl_node->resp_lock);
+	dev_kfree_skb(skb);
+}
+
+static int qtnf_trans_event_enqueue(struct qtnf_bus *bus, struct sk_buff *skb)
+{
+	struct qtnf_qlink_transport *trans = &bus->trans;
+
+	if (likely(skb_queue_len(&trans->event_queue) <
+		   trans->event_queue_max_len)) {
+		skb_queue_tail(&trans->event_queue, skb);
+		queue_work(bus->workqueue, &bus->event_work);
+	} else {
+		pr_warn("event dropped due to queue overflow\n");
+		dev_kfree_skb(skb);
+		return -1;
+	}
+
+	return 0;
+}
+
+void qtnf_trans_init(struct qtnf_bus *bus)
+{
+	struct qtnf_qlink_transport *trans = &bus->trans;
+
+	init_completion(&trans->curr_cmd.cmd_resp_completion);
+	spin_lock_init(&trans->curr_cmd.resp_lock);
+
+	spin_lock(&trans->curr_cmd.resp_lock);
+	trans->curr_cmd.seq_num = 0;
+	trans->curr_cmd.waiting_for_resp = false;
+	trans->curr_cmd.resp_skb = NULL;
+	spin_unlock(&trans->curr_cmd.resp_lock);
+
+	/* Init event handling related fields */
+	skb_queue_head_init(&trans->event_queue);
+	trans->event_queue_max_len = QTNF_MAX_EVENT_QUEUE_LEN;
+}
+
+static void qtnf_trans_free_events(struct qtnf_bus *bus)
+{
+	struct sk_buff_head *event_queue = &bus->trans.event_queue;
+	struct sk_buff *current_event_skb = skb_dequeue(event_queue);
+
+	while (current_event_skb) {
+		dev_kfree_skb_any(current_event_skb);
+		current_event_skb = skb_dequeue(event_queue);
+	}
+}
+
+void qtnf_trans_free(struct qtnf_bus *bus)
+{
+	if (!bus) {
+		pr_err("invalid bus pointer\n");
+		return;
+	}
+
+	qtnf_trans_free_events(bus);
+}
+
+int qtnf_trans_handle_rx_ctl_packet(struct qtnf_bus *bus, struct sk_buff *skb)
+{
+	const struct qlink_msg_header *header = (void *)skb->data;
+	int ret = -1;
+
+	if (unlikely(skb->len < sizeof(*header))) {
+		pr_warn("packet is too small: %u\n", skb->len);
+		dev_kfree_skb(skb);
+		return -EINVAL;
+	}
+
+	if (unlikely(skb->len != le16_to_cpu(header->len))) {
+		pr_warn("cmd reply length mismatch: %u != %u\n",
+			skb->len, le16_to_cpu(header->len));
+		dev_kfree_skb(skb);
+		return -EFAULT;
+	}
+
+	switch (le16_to_cpu(header->type)) {
+	case QLINK_MSG_TYPE_CMDRSP:
+		if (unlikely(skb->len < sizeof(struct qlink_cmd))) {
+			pr_warn("cmd reply too short: %u\n", skb->len);
+			dev_kfree_skb(skb);
+			break;
+		}
+
+		qtnf_trans_signal_cmdresp(bus, skb);
+		break;
+	case QLINK_MSG_TYPE_EVENT:
+		if (unlikely(skb->len < sizeof(struct qlink_event))) {
+			pr_warn("event too short: %u\n", skb->len);
+			dev_kfree_skb(skb);
+			break;
+		}
+
+		ret = qtnf_trans_event_enqueue(bus, skb);
+		break;
+	default:
+		pr_warn("unknown packet type: %x\n", le16_to_cpu(header->type));
+		dev_kfree_skb(skb);
+		break;
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(qtnf_trans_handle_rx_ctl_packet);

linux-7.2.3/drivers/net/wireless/quantenna/qtnfmac/trans.h

@@ -0,0 +1,44 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Copyright (c) 2015-2016 Quantenna Communications. All rights reserved. */
+
+#ifndef _QTN_FMAC_TRANS_H_
+#define _QTN_FMAC_TRANS_H_
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/skbuff.h>
+#include <linux/mutex.h>
+
+#include "qlink.h"
+
+#define QTNF_CMD_FLAG_RESP_REQ		BIT(0)
+
+#define QTNF_MAX_CMD_BUF_SIZE	2048
+#define QTNF_DEF_CMD_HROOM	4
+
+struct qtnf_bus;
+
+struct qtnf_cmd_ctl_node {
+	struct completion cmd_resp_completion;
+	struct sk_buff *resp_skb;
+	u16 seq_num;
+	bool waiting_for_resp;
+	spinlock_t resp_lock; /* lock for resp_skb & waiting_for_resp changes */
+};
+
+struct qtnf_qlink_transport {
+	struct qtnf_cmd_ctl_node curr_cmd;
+	struct sk_buff_head event_queue;
+	size_t event_queue_max_len;
+};
+
+void qtnf_trans_init(struct qtnf_bus *bus);
+void qtnf_trans_free(struct qtnf_bus *bus);
+
+int qtnf_trans_send_next_cmd(struct qtnf_bus *bus);
+int qtnf_trans_handle_rx_ctl_packet(struct qtnf_bus *bus, struct sk_buff *skb);
+int qtnf_trans_send_cmd_with_resp(struct qtnf_bus *bus,
+				  struct sk_buff *cmd_skb,
+				  struct sk_buff **response_skb);
+
+#endif /* _QTN_FMAC_TRANS_H_ */

linux-7.2.3/drivers/net/wireless/quantenna/qtnfmac/util.c

@@ -0,0 +1,123 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Copyright (c) 2015-2016 Quantenna Communications. All rights reserved. */
+
+#include "util.h"
+#include "qtn_hw_ids.h"
+
+void qtnf_sta_list_init(struct qtnf_sta_list *list)
+{
+	if (unlikely(!list))
+		return;
+
+	INIT_LIST_HEAD(&list->head);
+	atomic_set(&list->size, 0);
+}
+
+struct qtnf_sta_node *qtnf_sta_list_lookup(struct qtnf_sta_list *list,
+					   const u8 *mac)
+{
+	struct qtnf_sta_node *node;
+
+	if (unlikely(!mac))
+		return NULL;
+
+	list_for_each_entry(node, &list->head, list) {
+		if (ether_addr_equal(node->mac_addr, mac))
+			return node;
+	}
+
+	return NULL;
+}
+
+struct qtnf_sta_node *qtnf_sta_list_lookup_index(struct qtnf_sta_list *list,
+						 size_t index)
+{
+	struct qtnf_sta_node *node;
+
+	if (qtnf_sta_list_size(list) <= index)
+		return NULL;
+
+	list_for_each_entry(node, &list->head, list) {
+		if (index-- == 0)
+			return node;
+	}
+
+	return NULL;
+}
+
+struct qtnf_sta_node *qtnf_sta_list_add(struct qtnf_vif *vif,
+					const u8 *mac)
+{
+	struct qtnf_sta_list *list = &vif->sta_list;
+	struct qtnf_sta_node *node;
+
+	if (unlikely(!mac))
+		return NULL;
+
+	node = qtnf_sta_list_lookup(list, mac);
+
+	if (node)
+		goto done;
+
+	node = kzalloc_obj(*node);
+	if (unlikely(!node))
+		goto done;
+
+	ether_addr_copy(node->mac_addr, mac);
+	list_add_tail(&node->list, &list->head);
+	atomic_inc(&list->size);
+	++vif->generation;
+
+done:
+	return node;
+}
+
+bool qtnf_sta_list_del(struct qtnf_vif *vif, const u8 *mac)
+{
+	struct qtnf_sta_list *list = &vif->sta_list;
+	struct qtnf_sta_node *node;
+	bool ret = false;
+
+	node = qtnf_sta_list_lookup(list, mac);
+
+	if (node) {
+		list_del(&node->list);
+		atomic_dec(&list->size);
+		kfree(node);
+		++vif->generation;
+		ret = true;
+	}
+
+	return ret;
+}
+
+void qtnf_sta_list_free(struct qtnf_sta_list *list)
+{
+	struct qtnf_sta_node *node, *tmp;
+
+	atomic_set(&list->size, 0);
+
+	list_for_each_entry_safe(node, tmp, &list->head, list) {
+		list_del(&node->list);
+		kfree(node);
+	}
+
+	INIT_LIST_HEAD(&list->head);
+}
+
+const char *qtnf_chipid_to_string(unsigned long chip_id)
+{
+	switch (chip_id) {
+	case QTN_CHIP_ID_TOPAZ:
+		return "Topaz";
+	case QTN_CHIP_ID_PEARL:
+		return "Pearl revA";
+	case QTN_CHIP_ID_PEARL_B:
+		return "Pearl revB";
+	case QTN_CHIP_ID_PEARL_C:
+		return "Pearl revC";
+	default:
+		return "unknown";
+	}
+}
+EXPORT_SYMBOL_GPL(qtnf_chipid_to_string);

linux-7.2.3/drivers/net/wireless/quantenna/qtnfmac/util.h

@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Copyright (c) 2015 Quantenna Communications. All rights reserved. */
+
+#ifndef QTNFMAC_UTIL_H
+#define QTNFMAC_UTIL_H
+
+#include <linux/kernel.h>
+#include "core.h"
+
+const char *qtnf_chipid_to_string(unsigned long chip_id);
+
+void qtnf_sta_list_init(struct qtnf_sta_list *list);
+
+struct qtnf_sta_node *qtnf_sta_list_lookup(struct qtnf_sta_list *list,
+					   const u8 *mac);
+struct qtnf_sta_node *qtnf_sta_list_lookup_index(struct qtnf_sta_list *list,
+						 size_t index);
+struct qtnf_sta_node *qtnf_sta_list_add(struct qtnf_vif *vif,
+					const u8 *mac);
+bool qtnf_sta_list_del(struct qtnf_vif *vif, const u8 *mac);
+
+void qtnf_sta_list_free(struct qtnf_sta_list *list);
+
+static inline size_t qtnf_sta_list_size(const struct qtnf_sta_list *list)
+{
+	return atomic_read(&list->size);
+}
+
+static inline bool qtnf_sta_list_empty(const struct qtnf_sta_list *list)
+{
+	return list_empty(&list->head);
+}
+
+#endif /* QTNFMAC_UTIL_H */