Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 1534 insertions, 0 deletions

diff --git a/drivers/net/wireless/microchip/wilc1000/wlan.c b/drivers/net/wireless/microchip/wilc1000/wlan.c
new file mode 100644
index 000000000..58bbf5008
--- /dev/null
+++ b/drivers/net/wireless/microchip/wilc1000/wlan.c
@@ -0,0 +1,1534 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2012 - 2018 Microchip Technology Inc., and its subsidiaries.
+ * All rights reserved.
+ */
+
+#include <linux/if_ether.h>
+#include <linux/ip.h>
+#include <net/dsfield.h>
+#include "cfg80211.h"
+#include "wlan_cfg.h"
+
+#define WAKE_UP_TRIAL_RETRY		10000
+
+static inline bool is_wilc1000(u32 id)
+{
+	return (id & (~WILC_CHIP_REV_FIELD)) == WILC_1000_BASE_ID;
+}
+
+static inline void acquire_bus(struct wilc *wilc, enum bus_acquire acquire)
+{
+	mutex_lock(&wilc->hif_cs);
+	if (acquire == WILC_BUS_ACQUIRE_AND_WAKEUP && wilc->power_save_mode)
+		chip_wakeup(wilc);
+}
+
+static inline void release_bus(struct wilc *wilc, enum bus_release release)
+{
+	if (release == WILC_BUS_RELEASE_ALLOW_SLEEP && wilc->power_save_mode)
+		chip_allow_sleep(wilc);
+	mutex_unlock(&wilc->hif_cs);
+}
+
+static void wilc_wlan_txq_remove(struct wilc *wilc, u8 q_num,
+				 struct txq_entry_t *tqe)
+{
+	list_del(&tqe->list);
+	wilc->txq_entries -= 1;
+	wilc->txq[q_num].count--;
+}
+
+static struct txq_entry_t *
+wilc_wlan_txq_remove_from_head(struct wilc *wilc, u8 q_num)
+{
+	struct txq_entry_t *tqe = NULL;
+	unsigned long flags;
+
+	spin_lock_irqsave(&wilc->txq_spinlock, flags);
+
+	if (!list_empty(&wilc->txq[q_num].txq_head.list)) {
+		tqe = list_first_entry(&wilc->txq[q_num].txq_head.list,
+				       struct txq_entry_t, list);
+		list_del(&tqe->list);
+		wilc->txq_entries -= 1;
+		wilc->txq[q_num].count--;
+	}
+	spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
+	return tqe;
+}
+
+static void wilc_wlan_txq_add_to_tail(struct net_device *dev, u8 q_num,
+				      struct txq_entry_t *tqe)
+{
+	unsigned long flags;
+	struct wilc_vif *vif = netdev_priv(dev);
+	struct wilc *wilc = vif->wilc;
+
+	spin_lock_irqsave(&wilc->txq_spinlock, flags);
+
+	list_add_tail(&tqe->list, &wilc->txq[q_num].txq_head.list);
+	wilc->txq_entries += 1;
+	wilc->txq[q_num].count++;
+
+	spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
+
+	complete(&wilc->txq_event);
+}
+
+static void wilc_wlan_txq_add_to_head(struct wilc_vif *vif, u8 q_num,
+				      struct txq_entry_t *tqe)
+{
+	unsigned long flags;
+	struct wilc *wilc = vif->wilc;
+
+	mutex_lock(&wilc->txq_add_to_head_cs);
+
+	spin_lock_irqsave(&wilc->txq_spinlock, flags);
+
+	list_add(&tqe->list, &wilc->txq[q_num].txq_head.list);
+	wilc->txq_entries += 1;
+	wilc->txq[q_num].count++;
+
+	spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
+	mutex_unlock(&wilc->txq_add_to_head_cs);
+	complete(&wilc->txq_event);
+}
+
+#define NOT_TCP_ACK			(-1)
+
+static inline void add_tcp_session(struct wilc_vif *vif, u32 src_prt,
+				   u32 dst_prt, u32 seq)
+{
+	struct tcp_ack_filter *f = &vif->ack_filter;
+
+	if (f->tcp_session < 2 * MAX_TCP_SESSION) {
+		f->ack_session_info[f->tcp_session].seq_num = seq;
+		f->ack_session_info[f->tcp_session].bigger_ack_num = 0;
+		f->ack_session_info[f->tcp_session].src_port = src_prt;
+		f->ack_session_info[f->tcp_session].dst_port = dst_prt;
+		f->tcp_session++;
+	}
+}
+
+static inline void update_tcp_session(struct wilc_vif *vif, u32 index, u32 ack)
+{
+	struct tcp_ack_filter *f = &vif->ack_filter;
+
+	if (index < 2 * MAX_TCP_SESSION &&
+	    ack > f->ack_session_info[index].bigger_ack_num)
+		f->ack_session_info[index].bigger_ack_num = ack;
+}
+
+static inline void add_tcp_pending_ack(struct wilc_vif *vif, u32 ack,
+				       u32 session_index,
+				       struct txq_entry_t *txqe)
+{
+	struct tcp_ack_filter *f = &vif->ack_filter;
+	u32 i = f->pending_base + f->pending_acks_idx;
+
+	if (i < MAX_PENDING_ACKS) {
+		f->pending_acks[i].ack_num = ack;
+		f->pending_acks[i].txqe = txqe;
+		f->pending_acks[i].session_index = session_index;
+		txqe->ack_idx = i;
+		f->pending_acks_idx++;
+	}
+}
+
+static inline void tcp_process(struct net_device *dev, struct txq_entry_t *tqe)
+{
+	void *buffer = tqe->buffer;
+	const struct ethhdr *eth_hdr_ptr = buffer;
+	int i;
+	unsigned long flags;
+	struct wilc_vif *vif = netdev_priv(dev);
+	struct wilc *wilc = vif->wilc;
+	struct tcp_ack_filter *f = &vif->ack_filter;
+	const struct iphdr *ip_hdr_ptr;
+	const struct tcphdr *tcp_hdr_ptr;
+	u32 ihl, total_length, data_offset;
+
+	spin_lock_irqsave(&wilc->txq_spinlock, flags);
+
+	if (eth_hdr_ptr->h_proto != htons(ETH_P_IP))
+		goto out;
+
+	ip_hdr_ptr = buffer + ETH_HLEN;
+
+	if (ip_hdr_ptr->protocol != IPPROTO_TCP)
+		goto out;
+
+	ihl = ip_hdr_ptr->ihl << 2;
+	tcp_hdr_ptr = buffer + ETH_HLEN + ihl;
+	total_length = ntohs(ip_hdr_ptr->tot_len);
+
+	data_offset = tcp_hdr_ptr->doff << 2;
+	if (total_length == (ihl + data_offset)) {
+		u32 seq_no, ack_no;
+
+		seq_no = ntohl(tcp_hdr_ptr->seq);
+		ack_no = ntohl(tcp_hdr_ptr->ack_seq);
+		for (i = 0; i < f->tcp_session; i++) {
+			u32 j = f->ack_session_info[i].seq_num;
+
+			if (i < 2 * MAX_TCP_SESSION &&
+			    j == seq_no) {
+				update_tcp_session(vif, i, ack_no);
+				break;
+			}
+		}
+		if (i == f->tcp_session)
+			add_tcp_session(vif, 0, 0, seq_no);
+
+		add_tcp_pending_ack(vif, ack_no, i, tqe);
+	}
+
+out:
+	spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
+}
+
+static void wilc_wlan_txq_filter_dup_tcp_ack(struct net_device *dev)
+{
+	struct wilc_vif *vif = netdev_priv(dev);
+	struct wilc *wilc = vif->wilc;
+	struct tcp_ack_filter *f = &vif->ack_filter;
+	u32 i = 0;
+	u32 dropped = 0;
+	unsigned long flags;
+
+	spin_lock_irqsave(&wilc->txq_spinlock, flags);
+	for (i = f->pending_base;
+	     i < (f->pending_base + f->pending_acks_idx); i++) {
+		u32 index;
+		u32 bigger_ack_num;
+
+		if (i >= MAX_PENDING_ACKS)
+			break;
+
+		index = f->pending_acks[i].session_index;
+
+		if (index >= 2 * MAX_TCP_SESSION)
+			break;
+
+		bigger_ack_num = f->ack_session_info[index].bigger_ack_num;
+
+		if (f->pending_acks[i].ack_num < bigger_ack_num) {
+			struct txq_entry_t *tqe;
+
+			tqe = f->pending_acks[i].txqe;
+			if (tqe) {
+				wilc_wlan_txq_remove(wilc, tqe->q_num, tqe);
+				tqe->status = 1;
+				if (tqe->tx_complete_func)
+					tqe->tx_complete_func(tqe->priv,
+							      tqe->status);
+				kfree(tqe);
+				dropped++;
+			}
+		}
+	}
+	f->pending_acks_idx = 0;
+	f->tcp_session = 0;
+
+	if (f->pending_base == 0)
+		f->pending_base = MAX_TCP_SESSION;
+	else
+		f->pending_base = 0;
+
+	spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
+
+	while (dropped > 0) {
+		wait_for_completion_timeout(&wilc->txq_event,
+					    msecs_to_jiffies(1));
+		dropped--;
+	}
+}
+
+void wilc_enable_tcp_ack_filter(struct wilc_vif *vif, bool value)
+{
+	vif->ack_filter.enabled = value;
+}
+
+static int wilc_wlan_txq_add_cfg_pkt(struct wilc_vif *vif, u8 *buffer,
+				     u32 buffer_size)
+{
+	struct txq_entry_t *tqe;
+	struct wilc *wilc = vif->wilc;
+
+	netdev_dbg(vif->ndev, "Adding config packet ...\n");
+	if (wilc->quit) {
+		netdev_dbg(vif->ndev, "Return due to clear function\n");
+		complete(&wilc->cfg_event);
+		return 0;
+	}
+
+	tqe = kmalloc(sizeof(*tqe), GFP_ATOMIC);
+	if (!tqe) {
+		complete(&wilc->cfg_event);
+		return 0;
+	}
+
+	tqe->type = WILC_CFG_PKT;
+	tqe->buffer = buffer;
+	tqe->buffer_size = buffer_size;
+	tqe->tx_complete_func = NULL;
+	tqe->priv = NULL;
+	tqe->q_num = AC_VO_Q;
+	tqe->ack_idx = NOT_TCP_ACK;
+	tqe->vif = vif;
+
+	wilc_wlan_txq_add_to_head(vif, AC_VO_Q, tqe);
+
+	return 1;
+}
+
+static bool is_ac_q_limit(struct wilc *wl, u8 q_num)
+{
+	u8 factors[NQUEUES] = {1, 1, 1, 1};
+	u16 i;
+	unsigned long flags;
+	struct wilc_tx_queue_status *q = &wl->tx_q_limit;
+	u8 end_index;
+	u8 q_limit;
+	bool ret = false;
+
+	spin_lock_irqsave(&wl->txq_spinlock, flags);
+	if (!q->initialized) {
+		for (i = 0; i < AC_BUFFER_SIZE; i++)
+			q->buffer[i] = i % NQUEUES;
+
+		for (i = 0; i < NQUEUES; i++) {
+			q->cnt[i] = AC_BUFFER_SIZE * factors[i] / NQUEUES;
+			q->sum += q->cnt[i];
+		}
+		q->end_index = AC_BUFFER_SIZE - 1;
+		q->initialized = 1;
+	}
+
+	end_index = q->end_index;
+	q->cnt[q->buffer[end_index]] -= factors[q->buffer[end_index]];
+	q->cnt[q_num] += factors[q_num];
+	q->sum += (factors[q_num] - factors[q->buffer[end_index]]);
+
+	q->buffer[end_index] = q_num;
+	if (end_index > 0)
+		q->end_index--;
+	else
+		q->end_index = AC_BUFFER_SIZE - 1;
+
+	if (!q->sum)
+		q_limit = 1;
+	else
+		q_limit = (q->cnt[q_num] * FLOW_CONTROL_UPPER_THRESHOLD / q->sum) + 1;
+
+	if (wl->txq[q_num].count <= q_limit)
+		ret = true;
+
+	spin_unlock_irqrestore(&wl->txq_spinlock, flags);
+
+	return ret;
+}
+
+static inline u8 ac_classify(struct wilc *wilc, struct sk_buff *skb)
+{
+	u8 q_num = AC_BE_Q;
+	u8 dscp;
+
+	switch (skb->protocol) {
+	case htons(ETH_P_IP):
+		dscp = ipv4_get_dsfield(ip_hdr(skb)) & 0xfc;
+		break;
+	case htons(ETH_P_IPV6):
+		dscp = ipv6_get_dsfield(ipv6_hdr(skb)) & 0xfc;
+		break;
+	default:
+		return q_num;
+	}
+
+	switch (dscp) {
+	case 0x08:
+	case 0x20:
+	case 0x40:
+		q_num = AC_BK_Q;
+		break;
+	case 0x80:
+	case 0xA0:
+	case 0x28:
+		q_num = AC_VI_Q;
+		break;
+	case 0xC0:
+	case 0xD0:
+	case 0xE0:
+	case 0x88:
+	case 0xB8:
+		q_num = AC_VO_Q;
+		break;
+	}
+
+	return q_num;
+}
+
+static inline int ac_balance(struct wilc *wl, u8 *ratio)
+{
+	u8 i, max_count = 0;
+
+	if (!ratio)
+		return -EINVAL;
+
+	for (i = 0; i < NQUEUES; i++)
+		if (wl->txq[i].fw.count > max_count)
+			max_count = wl->txq[i].fw.count;
+
+	for (i = 0; i < NQUEUES; i++)
+		ratio[i] = max_count - wl->txq[i].fw.count;
+
+	return 0;
+}
+
+static inline void ac_update_fw_ac_pkt_info(struct wilc *wl, u32 reg)
+{
+	wl->txq[AC_BK_Q].fw.count = FIELD_GET(BK_AC_COUNT_FIELD, reg);
+	wl->txq[AC_BE_Q].fw.count = FIELD_GET(BE_AC_COUNT_FIELD, reg);
+	wl->txq[AC_VI_Q].fw.count = FIELD_GET(VI_AC_COUNT_FIELD, reg);
+	wl->txq[AC_VO_Q].fw.count = FIELD_GET(VO_AC_COUNT_FIELD, reg);
+
+	wl->txq[AC_BK_Q].fw.acm = FIELD_GET(BK_AC_ACM_STAT_FIELD, reg);
+	wl->txq[AC_BE_Q].fw.acm = FIELD_GET(BE_AC_ACM_STAT_FIELD, reg);
+	wl->txq[AC_VI_Q].fw.acm = FIELD_GET(VI_AC_ACM_STAT_FIELD, reg);
+	wl->txq[AC_VO_Q].fw.acm = FIELD_GET(VO_AC_ACM_STAT_FIELD, reg);
+}
+
+static inline u8 ac_change(struct wilc *wilc, u8 *ac)
+{
+	do {
+		if (wilc->txq[*ac].fw.acm == 0)
+			return 0;
+		(*ac)++;
+	} while (*ac < NQUEUES);
+
+	return 1;
+}
+
+int wilc_wlan_txq_add_net_pkt(struct net_device *dev,
+			      struct tx_complete_data *tx_data, u8 *buffer,
+			      u32 buffer_size,
+			      void (*tx_complete_fn)(void *, int))
+{
+	struct txq_entry_t *tqe;
+	struct wilc_vif *vif = netdev_priv(dev);
+	struct wilc *wilc;
+	u8 q_num;
+
+	wilc = vif->wilc;
+
+	if (wilc->quit) {
+		tx_complete_fn(tx_data, 0);
+		return 0;
+	}
+
+	if (!wilc->initialized) {
+		tx_complete_fn(tx_data, 0);
+		return 0;
+	}
+
+	tqe = kmalloc(sizeof(*tqe), GFP_ATOMIC);
+
+	if (!tqe) {
+		tx_complete_fn(tx_data, 0);
+		return 0;
+	}
+	tqe->type = WILC_NET_PKT;
+	tqe->buffer = buffer;
+	tqe->buffer_size = buffer_size;
+	tqe->tx_complete_func = tx_complete_fn;
+	tqe->priv = tx_data;
+	tqe->vif = vif;
+
+	q_num = ac_classify(wilc, tx_data->skb);
+	tqe->q_num = q_num;
+	if (ac_change(wilc, &q_num)) {
+		tx_complete_fn(tx_data, 0);
+		kfree(tqe);
+		return 0;
+	}
+
+	if (is_ac_q_limit(wilc, q_num)) {
+		tqe->ack_idx = NOT_TCP_ACK;
+		if (vif->ack_filter.enabled)
+			tcp_process(dev, tqe);
+		wilc_wlan_txq_add_to_tail(dev, q_num, tqe);
+	} else {
+		tx_complete_fn(tx_data, 0);
+		kfree(tqe);
+	}
+
+	return wilc->txq_entries;
+}
+
+int wilc_wlan_txq_add_mgmt_pkt(struct net_device *dev, void *priv, u8 *buffer,
+			       u32 buffer_size,
+			       void (*tx_complete_fn)(void *, int))
+{
+	struct txq_entry_t *tqe;
+	struct wilc_vif *vif = netdev_priv(dev);
+	struct wilc *wilc;
+
+	wilc = vif->wilc;
+
+	if (wilc->quit) {
+		tx_complete_fn(priv, 0);
+		return 0;
+	}
+
+	if (!wilc->initialized) {
+		tx_complete_fn(priv, 0);
+		return 0;
+	}
+	tqe = kmalloc(sizeof(*tqe), GFP_ATOMIC);
+
+	if (!tqe) {
+		tx_complete_fn(priv, 0);
+		return 0;
+	}
+	tqe->type = WILC_MGMT_PKT;
+	tqe->buffer = buffer;
+	tqe->buffer_size = buffer_size;
+	tqe->tx_complete_func = tx_complete_fn;
+	tqe->priv = priv;
+	tqe->q_num = AC_BE_Q;
+	tqe->ack_idx = NOT_TCP_ACK;
+	tqe->vif = vif;
+	wilc_wlan_txq_add_to_tail(dev, AC_VO_Q, tqe);
+	return 1;
+}
+
+static struct txq_entry_t *wilc_wlan_txq_get_first(struct wilc *wilc, u8 q_num)
+{
+	struct txq_entry_t *tqe = NULL;
+	unsigned long flags;
+
+	spin_lock_irqsave(&wilc->txq_spinlock, flags);
+
+	if (!list_empty(&wilc->txq[q_num].txq_head.list))
+		tqe = list_first_entry(&wilc->txq[q_num].txq_head.list,
+				       struct txq_entry_t, list);
+
+	spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
+
+	return tqe;
+}
+
+static struct txq_entry_t *wilc_wlan_txq_get_next(struct wilc *wilc,
+						  struct txq_entry_t *tqe,
+						  u8 q_num)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&wilc->txq_spinlock, flags);
+
+	if (!list_is_last(&tqe->list, &wilc->txq[q_num].txq_head.list))
+		tqe = list_next_entry(tqe, list);
+	else
+		tqe = NULL;
+	spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
+
+	return tqe;
+}
+
+static void wilc_wlan_rxq_add(struct wilc *wilc, struct rxq_entry_t *rqe)
+{
+	if (wilc->quit)
+		return;
+
+	mutex_lock(&wilc->rxq_cs);
+	list_add_tail(&rqe->list, &wilc->rxq_head.list);
+	mutex_unlock(&wilc->rxq_cs);
+}
+
+static struct rxq_entry_t *wilc_wlan_rxq_remove(struct wilc *wilc)
+{
+	struct rxq_entry_t *rqe = NULL;
+
+	mutex_lock(&wilc->rxq_cs);
+	if (!list_empty(&wilc->rxq_head.list)) {
+		rqe = list_first_entry(&wilc->rxq_head.list, struct rxq_entry_t,
+				       list);
+		list_del(&rqe->list);
+	}
+	mutex_unlock(&wilc->rxq_cs);
+	return rqe;
+}
+
+void chip_allow_sleep(struct wilc *wilc)
+{
+	u32 reg = 0;
+	const struct wilc_hif_func *hif_func = wilc->hif_func;
+	u32 wakeup_reg, wakeup_bit;
+	u32 to_host_from_fw_reg, to_host_from_fw_bit;
+	u32 from_host_to_fw_reg, from_host_to_fw_bit;
+	u32 trials = 100;
+	int ret;
+
+	if (wilc->io_type == WILC_HIF_SDIO) {
+		wakeup_reg = WILC_SDIO_WAKEUP_REG;
+		wakeup_bit = WILC_SDIO_WAKEUP_BIT;
+		from_host_to_fw_reg = WILC_SDIO_HOST_TO_FW_REG;
+		from_host_to_fw_bit = WILC_SDIO_HOST_TO_FW_BIT;
+		to_host_from_fw_reg = WILC_SDIO_FW_TO_HOST_REG;
+		to_host_from_fw_bit = WILC_SDIO_FW_TO_HOST_BIT;
+	} else {
+		wakeup_reg = WILC_SPI_WAKEUP_REG;
+		wakeup_bit = WILC_SPI_WAKEUP_BIT;
+		from_host_to_fw_reg = WILC_SPI_HOST_TO_FW_REG;
+		from_host_to_fw_bit = WILC_SPI_HOST_TO_FW_BIT;
+		to_host_from_fw_reg = WILC_SPI_FW_TO_HOST_REG;
+		to_host_from_fw_bit = WILC_SPI_FW_TO_HOST_BIT;
+	}
+
+	while (--trials) {
+		ret = hif_func->hif_read_reg(wilc, to_host_from_fw_reg, &reg);
+		if (ret)
+			return;
+		if ((reg & to_host_from_fw_bit) == 0)
+			break;
+	}
+	if (!trials)
+		pr_warn("FW not responding\n");
+
+	/* Clear bit 1 */
+	ret = hif_func->hif_read_reg(wilc, wakeup_reg, &reg);
+	if (ret)
+		return;
+	if (reg & wakeup_bit) {
+		reg &= ~wakeup_bit;
+		ret = hif_func->hif_write_reg(wilc, wakeup_reg, reg);
+		if (ret)
+			return;
+	}
+
+	ret = hif_func->hif_read_reg(wilc, from_host_to_fw_reg, &reg);
+	if (ret)
+		return;
+	if (reg & from_host_to_fw_bit) {
+		reg &= ~from_host_to_fw_bit;
+		ret = hif_func->hif_write_reg(wilc, from_host_to_fw_reg, reg);
+		if (ret)
+			return;
+
+	}
+}
+EXPORT_SYMBOL_GPL(chip_allow_sleep);
+
+void chip_wakeup(struct wilc *wilc)
+{
+	u32 ret = 0;
+	u32 clk_status_val = 0, trials = 0;
+	u32 wakeup_reg, wakeup_bit;
+	u32 clk_status_reg, clk_status_bit;
+	u32 from_host_to_fw_reg, from_host_to_fw_bit;
+	const struct wilc_hif_func *hif_func = wilc->hif_func;
+
+	if (wilc->io_type == WILC_HIF_SDIO) {
+		wakeup_reg = WILC_SDIO_WAKEUP_REG;
+		wakeup_bit = WILC_SDIO_WAKEUP_BIT;
+		clk_status_reg = WILC_SDIO_CLK_STATUS_REG;
+		clk_status_bit = WILC_SDIO_CLK_STATUS_BIT;
+		from_host_to_fw_reg = WILC_SDIO_HOST_TO_FW_REG;
+		from_host_to_fw_bit = WILC_SDIO_HOST_TO_FW_BIT;
+	} else {
+		wakeup_reg = WILC_SPI_WAKEUP_REG;
+		wakeup_bit = WILC_SPI_WAKEUP_BIT;
+		clk_status_reg = WILC_SPI_CLK_STATUS_REG;
+		clk_status_bit = WILC_SPI_CLK_STATUS_BIT;
+		from_host_to_fw_reg = WILC_SPI_HOST_TO_FW_REG;
+		from_host_to_fw_bit = WILC_SPI_HOST_TO_FW_BIT;
+	}
+
+	/* indicate host wakeup */
+	ret = hif_func->hif_write_reg(wilc, from_host_to_fw_reg,
+				      from_host_to_fw_bit);
+	if (ret)
+		return;
+
+	/* Set wake-up bit */
+	ret = hif_func->hif_write_reg(wilc, wakeup_reg,
+				      wakeup_bit);
+	if (ret)
+		return;
+
+	while (trials < WAKE_UP_TRIAL_RETRY) {
+		ret = hif_func->hif_read_reg(wilc, clk_status_reg,
+					     &clk_status_val);
+		if (ret) {
+			pr_err("Bus error %d %x\n", ret, clk_status_val);
+			return;
+		}
+		if (clk_status_val & clk_status_bit)
+			break;
+
+		trials++;
+	}
+	if (trials >= WAKE_UP_TRIAL_RETRY) {
+		pr_err("Failed to wake-up the chip\n");
+		return;
+	}
+	/* Sometimes spi fail to read clock regs after reading
+	 * writing clockless registers
+	 */
+	if (wilc->io_type == WILC_HIF_SPI)
+		wilc->hif_func->hif_reset(wilc);
+}
+EXPORT_SYMBOL_GPL(chip_wakeup);
+
+void host_wakeup_notify(struct wilc *wilc)
+{
+	acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY);
+	wilc->hif_func->hif_write_reg(wilc, WILC_CORTUS_INTERRUPT_2, 1);
+	release_bus(wilc, WILC_BUS_RELEASE_ONLY);
+}
+EXPORT_SYMBOL_GPL(host_wakeup_notify);
+
+void host_sleep_notify(struct wilc *wilc)
+{
+	acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY);
+	wilc->hif_func->hif_write_reg(wilc, WILC_CORTUS_INTERRUPT_1, 1);
+	release_bus(wilc, WILC_BUS_RELEASE_ONLY);
+}
+EXPORT_SYMBOL_GPL(host_sleep_notify);
+
+int wilc_wlan_handle_txq(struct wilc *wilc, u32 *txq_count)
+{
+	int i, entries = 0;
+	u8 k, ac;
+	u32 sum;
+	u32 reg;
+	u8 ac_desired_ratio[NQUEUES] = {0, 0, 0, 0};
+	u8 ac_preserve_ratio[NQUEUES] = {1, 1, 1, 1};
+	u8 *num_pkts_to_add;
+	u8 vmm_entries_ac[WILC_VMM_TBL_SIZE];
+	u32 offset = 0;
+	bool max_size_over = 0, ac_exist = 0;
+	int vmm_sz = 0;
+	struct txq_entry_t *tqe_q[NQUEUES];
+	int ret = 0;
+	int counter;
+	int timeout;
+	u32 *vmm_table = wilc->vmm_table;
+	u8 ac_pkt_num_to_chip[NQUEUES] = {0, 0, 0, 0};
+	const struct wilc_hif_func *func;
+	int srcu_idx;
+	u8 *txb = wilc->tx_buffer;
+	struct wilc_vif *vif;
+
+	if (wilc->quit)
+		goto out_update_cnt;
+
+	if (ac_balance(wilc, ac_desired_ratio))
+		return -EINVAL;
+
+	mutex_lock(&wilc->txq_add_to_head_cs);
+
+	srcu_idx = srcu_read_lock(&wilc->srcu);
+	list_for_each_entry_rcu(vif, &wilc->vif_list, list)
+		wilc_wlan_txq_filter_dup_tcp_ack(vif->ndev);
+	srcu_read_unlock(&wilc->srcu, srcu_idx);
+
+	for (ac = 0; ac < NQUEUES; ac++)
+		tqe_q[ac] = wilc_wlan_txq_get_first(wilc, ac);
+
+	i = 0;
+	sum = 0;
+	max_size_over = 0;
+	num_pkts_to_add = ac_desired_ratio;
+	do {
+		ac_exist = 0;
+		for (ac = 0; (ac < NQUEUES) && (!max_size_over); ac++) {
+			if (!tqe_q[ac])
+				continue;
+
+			ac_exist = 1;
+			for (k = 0; (k < num_pkts_to_add[ac]) &&
+			     (!max_size_over) && tqe_q[ac]; k++) {
+				if (i >= (WILC_VMM_TBL_SIZE - 1)) {
+					max_size_over = 1;
+					break;
+				}
+
+				if (tqe_q[ac]->type == WILC_CFG_PKT)
+					vmm_sz = ETH_CONFIG_PKT_HDR_OFFSET;
+				else if (tqe_q[ac]->type == WILC_NET_PKT)
+					vmm_sz = ETH_ETHERNET_HDR_OFFSET;
+				else
+					vmm_sz = HOST_HDR_OFFSET;
+
+				vmm_sz += tqe_q[ac]->buffer_size;
+				vmm_sz = ALIGN(vmm_sz, 4);
+
+				if ((sum + vmm_sz) > WILC_TX_BUFF_SIZE) {
+					max_size_over = 1;
+					break;
+				}
+				vmm_table[i] = vmm_sz / 4;
+				if (tqe_q[ac]->type == WILC_CFG_PKT)
+					vmm_table[i] |= BIT(10);
+
+				cpu_to_le32s(&vmm_table[i]);
+				vmm_entries_ac[i] = ac;
+
+				i++;
+				sum += vmm_sz;
+				tqe_q[ac] = wilc_wlan_txq_get_next(wilc,
+								   tqe_q[ac],
+								   ac);
+			}
+		}
+		num_pkts_to_add = ac_preserve_ratio;
+	} while (!max_size_over && ac_exist);
+
+	if (i == 0)
+		goto out_unlock;
+	vmm_table[i] = 0x0;
+
+	acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP);
+	counter = 0;
+	func = wilc->hif_func;
+	do {
+		ret = func->hif_read_reg(wilc, WILC_HOST_TX_CTRL, &reg);
+		if (ret)
+			break;
+
+		if ((reg & 0x1) == 0) {
+			ac_update_fw_ac_pkt_info(wilc, reg);
+			break;
+		}
+
+		counter++;
+		if (counter > 200) {
+			counter = 0;
+			ret = func->hif_write_reg(wilc, WILC_HOST_TX_CTRL, 0);
+			break;
+		}
+	} while (!wilc->quit);
+
+	if (ret)
+		goto out_release_bus;
+
+	timeout = 200;
+	do {
+		ret = func->hif_block_tx(wilc,
+					 WILC_VMM_TBL_RX_SHADOW_BASE,
+					 (u8 *)vmm_table,
+					 ((i + 1) * 4));
+		if (ret)
+			break;
+
+		ret = func->hif_write_reg(wilc, WILC_HOST_VMM_CTL, 0x2);
+		if (ret)
+			break;
+
+		do {
+			ret = func->hif_read_reg(wilc, WILC_HOST_VMM_CTL, &reg);
+			if (ret)
+				break;
+			if (FIELD_GET(WILC_VMM_ENTRY_AVAILABLE, reg)) {
+				entries = FIELD_GET(WILC_VMM_ENTRY_COUNT, reg);
+				break;
+			}
+		} while (--timeout);
+		if (timeout <= 0) {
+			ret = func->hif_write_reg(wilc, WILC_HOST_VMM_CTL, 0x0);
+			break;
+		}
+
+		if (ret)
+			break;
+
+		if (entries == 0) {
+			ret = func->hif_read_reg(wilc, WILC_HOST_TX_CTRL, &reg);
+			if (ret)
+				break;
+			reg &= ~BIT(0);
+			ret = func->hif_write_reg(wilc, WILC_HOST_TX_CTRL, reg);
+		}
+	} while (0);
+
+	if (ret)
+		goto out_release_bus;
+
+	if (entries == 0) {
+		/*
+		 * No VMM space available in firmware so retry to transmit
+		 * the packet from tx queue.
+		 */
+		ret = WILC_VMM_ENTRY_FULL_RETRY;
+		goto out_release_bus;
+	}
+
+	release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
+
+	offset = 0;
+	i = 0;
+	do {
+		struct txq_entry_t *tqe;
+		u32 header, buffer_offset;
+		char *bssid;
+		u8 mgmt_ptk = 0;
+
+		if (vmm_table[i] == 0 || vmm_entries_ac[i] >= NQUEUES)
+			break;
+
+		tqe = wilc_wlan_txq_remove_from_head(wilc, vmm_entries_ac[i]);
+		if (!tqe)
+			break;
+
+		ac_pkt_num_to_chip[vmm_entries_ac[i]]++;
+		vif = tqe->vif;
+
+		le32_to_cpus(&vmm_table[i]);
+		vmm_sz = FIELD_GET(WILC_VMM_BUFFER_SIZE, vmm_table[i]);
+		vmm_sz *= 4;
+
+		if (tqe->type == WILC_MGMT_PKT)
+			mgmt_ptk = 1;
+
+		header = (FIELD_PREP(WILC_VMM_HDR_TYPE, tqe->type) |
+			  FIELD_PREP(WILC_VMM_HDR_MGMT_FIELD, mgmt_ptk) |
+			  FIELD_PREP(WILC_VMM_HDR_PKT_SIZE, tqe->buffer_size) |
+			  FIELD_PREP(WILC_VMM_HDR_BUFF_SIZE, vmm_sz));
+
+		cpu_to_le32s(&header);
+		memcpy(&txb[offset], &header, 4);
+		if (tqe->type == WILC_CFG_PKT) {
+			buffer_offset = ETH_CONFIG_PKT_HDR_OFFSET;
+		} else if (tqe->type == WILC_NET_PKT) {
+			int prio = tqe->q_num;
+
+			bssid = tqe->vif->bssid;
+			buffer_offset = ETH_ETHERNET_HDR_OFFSET;
+			memcpy(&txb[offset + 4], &prio, sizeof(prio));
+			memcpy(&txb[offset + 8], bssid, 6);
+		} else {
+			buffer_offset = HOST_HDR_OFFSET;
+		}
+
+		memcpy(&txb[offset + buffer_offset],
+		       tqe->buffer, tqe->buffer_size);
+		offset += vmm_sz;
+		i++;
+		tqe->status = 1;
+		if (tqe->tx_complete_func)
+			tqe->tx_complete_func(tqe->priv, tqe->status);
+		if (tqe->ack_idx != NOT_TCP_ACK &&
+		    tqe->ack_idx < MAX_PENDING_ACKS)
+			vif->ack_filter.pending_acks[tqe->ack_idx].txqe = NULL;
+		kfree(tqe);
+	} while (--entries);
+	for (i = 0; i < NQUEUES; i++)
+		wilc->txq[i].fw.count += ac_pkt_num_to_chip[i];
+
+	acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP);
+
+	ret = func->hif_clear_int_ext(wilc, ENABLE_TX_VMM);
+	if (ret)
+		goto out_release_bus;
+
+	ret = func->hif_block_tx_ext(wilc, 0, txb, offset);
+
+out_release_bus:
+	release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
+
+out_unlock:
+	mutex_unlock(&wilc->txq_add_to_head_cs);
+
+out_update_cnt:
+	*txq_count = wilc->txq_entries;
+	return ret;
+}
+
+static void wilc_wlan_handle_rx_buff(struct wilc *wilc, u8 *buffer, int size)
+{
+	int offset = 0;
+	u32 header;
+	u32 pkt_len, pkt_offset, tp_len;
+	int is_cfg_packet;
+	u8 *buff_ptr;
+
+	do {
+		buff_ptr = buffer + offset;
+		header = get_unaligned_le32(buff_ptr);
+
+		is_cfg_packet = FIELD_GET(WILC_PKT_HDR_CONFIG_FIELD, header);
+		pkt_offset = FIELD_GET(WILC_PKT_HDR_OFFSET_FIELD, header);
+		tp_len = FIELD_GET(WILC_PKT_HDR_TOTAL_LEN_FIELD, header);
+		pkt_len = FIELD_GET(WILC_PKT_HDR_LEN_FIELD, header);
+
+		if (pkt_len == 0 || tp_len == 0)
+			break;
+
+		if (pkt_offset & IS_MANAGMEMENT) {
+			buff_ptr += HOST_HDR_OFFSET;
+			wilc_wfi_mgmt_rx(wilc, buff_ptr, pkt_len,
+					 pkt_offset & IS_MGMT_AUTH_PKT);
+		} else {
+			if (!is_cfg_packet) {
+				wilc_frmw_to_host(wilc, buff_ptr, pkt_len,
+						  pkt_offset);
+			} else {
+				struct wilc_cfg_rsp rsp;
+
+				buff_ptr += pkt_offset;
+
+				wilc_wlan_cfg_indicate_rx(wilc, buff_ptr,
+							  pkt_len,
+							  &rsp);
+				if (rsp.type == WILC_CFG_RSP) {
+					if (wilc->cfg_seq_no == rsp.seq_no)
+						complete(&wilc->cfg_event);
+				} else if (rsp.type == WILC_CFG_RSP_STATUS) {
+					wilc_mac_indicate(wilc);
+				}
+			}
+		}
+		offset += tp_len;
+	} while (offset < size);
+}
+
+static void wilc_wlan_handle_rxq(struct wilc *wilc)
+{
+	int size;
+	u8 *buffer;
+	struct rxq_entry_t *rqe;
+
+	while (!wilc->quit) {
+		rqe = wilc_wlan_rxq_remove(wilc);
+		if (!rqe)
+			break;
+
+		buffer = rqe->buffer;
+		size = rqe->buffer_size;
+		wilc_wlan_handle_rx_buff(wilc, buffer, size);
+
+		kfree(rqe);
+	}
+	if (wilc->quit)
+		complete(&wilc->cfg_event);
+}
+
+static void wilc_unknown_isr_ext(struct wilc *wilc)
+{
+	wilc->hif_func->hif_clear_int_ext(wilc, 0);
+}
+
+static void wilc_wlan_handle_isr_ext(struct wilc *wilc, u32 int_status)
+{
+	u32 offset = wilc->rx_buffer_offset;
+	u8 *buffer = NULL;
+	u32 size;
+	u32 retries = 0;
+	int ret = 0;
+	struct rxq_entry_t *rqe;
+
+	size = FIELD_GET(WILC_INTERRUPT_DATA_SIZE, int_status) << 2;
+
+	while (!size && retries < 10) {
+		wilc->hif_func->hif_read_size(wilc, &size);
+		size = FIELD_GET(WILC_INTERRUPT_DATA_SIZE, size) << 2;
+		retries++;
+	}
+
+	if (size <= 0)
+		return;
+
+	if (WILC_RX_BUFF_SIZE - offset < size)
+		offset = 0;
+
+	buffer = &wilc->rx_buffer[offset];
+
+	wilc->hif_func->hif_clear_int_ext(wilc, DATA_INT_CLR | ENABLE_RX_VMM);
+	ret = wilc->hif_func->hif_block_rx_ext(wilc, 0, buffer, size);
+	if (ret)
+		return;
+
+	offset += size;
+	wilc->rx_buffer_offset = offset;
+	rqe = kmalloc(sizeof(*rqe), GFP_KERNEL);
+	if (!rqe)
+		return;
+
+	rqe->buffer = buffer;
+	rqe->buffer_size = size;
+	wilc_wlan_rxq_add(wilc, rqe);
+	wilc_wlan_handle_rxq(wilc);
+}
+
+void wilc_handle_isr(struct wilc *wilc)
+{
+	u32 int_status;
+
+	acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP);
+	wilc->hif_func->hif_read_int(wilc, &int_status);
+
+	if (int_status & DATA_INT_EXT)
+		wilc_wlan_handle_isr_ext(wilc, int_status);
+
+	if (!(int_status & (ALL_INT_EXT)))
+		wilc_unknown_isr_ext(wilc);
+
+	release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
+}
+EXPORT_SYMBOL_GPL(wilc_handle_isr);
+
+int wilc_wlan_firmware_download(struct wilc *wilc, const u8 *buffer,
+				u32 buffer_size)
+{
+	u32 offset;
+	u32 addr, size, size2, blksz;
+	u8 *dma_buffer;
+	int ret = 0;
+	u32 reg = 0;
+
+	blksz = BIT(12);
+
+	dma_buffer = kmalloc(blksz, GFP_KERNEL);
+	if (!dma_buffer)
+		return -EIO;
+
+	offset = 0;
+	pr_debug("%s: Downloading firmware size = %d\n", __func__, buffer_size);
+
+	acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP);
+
+	wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, &reg);
+	reg &= ~BIT(10);
+	ret = wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
+	wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, &reg);
+	if (reg & BIT(10))
+		pr_err("%s: Failed to reset\n", __func__);
+
+	release_bus(wilc, WILC_BUS_RELEASE_ONLY);
+	do {
+		addr = get_unaligned_le32(&buffer[offset]);
+		size = get_unaligned_le32(&buffer[offset + 4]);
+		acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP);
+		offset += 8;
+		while (((int)size) && (offset < buffer_size)) {
+			if (size <= blksz)
+				size2 = size;
+			else
+				size2 = blksz;
+
+			memcpy(dma_buffer, &buffer[offset], size2);
+			ret = wilc->hif_func->hif_block_tx(wilc, addr,
+							   dma_buffer, size2);
+			if (ret)
+				break;
+
+			addr += size2;
+			offset += size2;
+			size -= size2;
+		}
+		release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
+
+		if (ret) {
+			pr_err("%s Bus error\n", __func__);
+			goto fail;
+		}
+		pr_debug("%s Offset = %d\n", __func__, offset);
+	} while (offset < buffer_size);
+
+fail:
+
+	kfree(dma_buffer);
+
+	return ret;
+}
+
+int wilc_wlan_start(struct wilc *wilc)
+{
+	u32 reg = 0;
+	int ret;
+	u32 chipid;
+
+	if (wilc->io_type == WILC_HIF_SDIO) {
+		reg = 0;
+		reg |= BIT(3);
+	} else if (wilc->io_type == WILC_HIF_SPI) {
+		reg = 1;
+	}
+	acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY);
+	ret = wilc->hif_func->hif_write_reg(wilc, WILC_VMM_CORE_CFG, reg);
+	if (ret)
+		goto release;
+
+	reg = 0;
+	if (wilc->io_type == WILC_HIF_SDIO && wilc->dev_irq_num)
+		reg |= WILC_HAVE_SDIO_IRQ_GPIO;
+
+	ret = wilc->hif_func->hif_write_reg(wilc, WILC_GP_REG_1, reg);
+	if (ret)
+		goto release;
+
+	wilc->hif_func->hif_sync_ext(wilc, NUM_INT_EXT);
+
+	ret = wilc->hif_func->hif_read_reg(wilc, WILC_CHIPID, &chipid);
+	if (ret)
+		goto release;
+
+	wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, &reg);
+	if ((reg & BIT(10)) == BIT(10)) {
+		reg &= ~BIT(10);
+		wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
+		wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, &reg);
+	}
+
+	reg |= BIT(10);
+	ret = wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
+	wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, &reg);
+
+release:
+	release_bus(wilc, WILC_BUS_RELEASE_ONLY);
+	return ret;
+}
+
+int wilc_wlan_stop(struct wilc *wilc, struct wilc_vif *vif)
+{
+	u32 reg = 0;
+	int ret;
+
+	acquire_bus(wilc, WILC_BUS_ACQUIRE_AND_WAKEUP);
+
+	ret = wilc->hif_func->hif_read_reg(wilc, WILC_GP_REG_0, &reg);
+	if (ret) {
+		netdev_err(vif->ndev, "Error while reading reg\n");
+		goto release;
+	}
+
+	ret = wilc->hif_func->hif_write_reg(wilc, WILC_GP_REG_0,
+					(reg | WILC_ABORT_REQ_BIT));
+	if (ret) {
+		netdev_err(vif->ndev, "Error while writing reg\n");
+		goto release;
+	}
+
+	ret = wilc->hif_func->hif_read_reg(wilc, WILC_FW_HOST_COMM, &reg);
+	if (ret) {
+		netdev_err(vif->ndev, "Error while reading reg\n");
+		goto release;
+	}
+	reg = BIT(0);
+
+	ret = wilc->hif_func->hif_write_reg(wilc, WILC_FW_HOST_COMM, reg);
+	if (ret) {
+		netdev_err(vif->ndev, "Error while writing reg\n");
+		goto release;
+	}
+
+	ret = 0;
+release:
+	/* host comm is disabled - we can't issue sleep command anymore: */
+	release_bus(wilc, WILC_BUS_RELEASE_ONLY);
+
+	return ret;
+}
+
+void wilc_wlan_cleanup(struct net_device *dev)
+{
+	struct txq_entry_t *tqe;
+	struct rxq_entry_t *rqe;
+	u8 ac;
+	struct wilc_vif *vif = netdev_priv(dev);
+	struct wilc *wilc = vif->wilc;
+
+	wilc->quit = 1;
+	for (ac = 0; ac < NQUEUES; ac++) {
+		while ((tqe = wilc_wlan_txq_remove_from_head(wilc, ac))) {
+			if (tqe->tx_complete_func)
+				tqe->tx_complete_func(tqe->priv, 0);
+			kfree(tqe);
+		}
+	}
+
+	while ((rqe = wilc_wlan_rxq_remove(wilc)))
+		kfree(rqe);
+
+	kfree(wilc->vmm_table);
+	wilc->vmm_table = NULL;
+	kfree(wilc->rx_buffer);
+	wilc->rx_buffer = NULL;
+	kfree(wilc->tx_buffer);
+	wilc->tx_buffer = NULL;
+	wilc->hif_func->hif_deinit(wilc);
+}
+
+static int wilc_wlan_cfg_commit(struct wilc_vif *vif, int type,
+				u32 drv_handler)
+{
+	struct wilc *wilc = vif->wilc;
+	struct wilc_cfg_frame *cfg = &wilc->cfg_frame;
+	int t_len = wilc->cfg_frame_offset + sizeof(struct wilc_cfg_cmd_hdr);
+
+	if (type == WILC_CFG_SET)
+		cfg->hdr.cmd_type = 'W';
+	else
+		cfg->hdr.cmd_type = 'Q';
+
+	cfg->hdr.seq_no = wilc->cfg_seq_no % 256;
+	cfg->hdr.total_len = cpu_to_le16(t_len);
+	cfg->hdr.driver_handler = cpu_to_le32(drv_handler);
+	wilc->cfg_seq_no = cfg->hdr.seq_no;
+
+	if (!wilc_wlan_txq_add_cfg_pkt(vif, (u8 *)&cfg->hdr, t_len))
+		return -1;
+
+	return 0;
+}
+
+int wilc_wlan_cfg_set(struct wilc_vif *vif, int start, u16 wid, u8 *buffer,
+		      u32 buffer_size, int commit, u32 drv_handler)
+{
+	u32 offset;
+	int ret_size;
+	struct wilc *wilc = vif->wilc;
+
+	mutex_lock(&wilc->cfg_cmd_lock);
+
+	if (start)
+		wilc->cfg_frame_offset = 0;
+
+	offset = wilc->cfg_frame_offset;
+	ret_size = wilc_wlan_cfg_set_wid(wilc->cfg_frame.frame, offset,
+					 wid, buffer, buffer_size);
+	offset += ret_size;
+	wilc->cfg_frame_offset = offset;
+
+	if (!commit) {
+		mutex_unlock(&wilc->cfg_cmd_lock);
+		return ret_size;
+	}
+
+	netdev_dbg(vif->ndev, "%s: seqno[%d]\n", __func__, wilc->cfg_seq_no);
+
+	if (wilc_wlan_cfg_commit(vif, WILC_CFG_SET, drv_handler))
+		ret_size = 0;
+
+	if (!wait_for_completion_timeout(&wilc->cfg_event,
+					 WILC_CFG_PKTS_TIMEOUT)) {
+		netdev_dbg(vif->ndev, "%s: Timed Out\n", __func__);
+		ret_size = 0;
+	}
+
+	wilc->cfg_frame_offset = 0;
+	wilc->cfg_seq_no += 1;
+	mutex_unlock(&wilc->cfg_cmd_lock);
+
+	return ret_size;
+}
+
+int wilc_wlan_cfg_get(struct wilc_vif *vif, int start, u16 wid, int commit,
+		      u32 drv_handler)
+{
+	u32 offset;
+	int ret_size;
+	struct wilc *wilc = vif->wilc;
+
+	mutex_lock(&wilc->cfg_cmd_lock);
+
+	if (start)
+		wilc->cfg_frame_offset = 0;
+
+	offset = wilc->cfg_frame_offset;
+	ret_size = wilc_wlan_cfg_get_wid(wilc->cfg_frame.frame, offset, wid);
+	offset += ret_size;
+	wilc->cfg_frame_offset = offset;
+
+	if (!commit) {
+		mutex_unlock(&wilc->cfg_cmd_lock);
+		return ret_size;
+	}
+
+	if (wilc_wlan_cfg_commit(vif, WILC_CFG_QUERY, drv_handler))
+		ret_size = 0;
+
+	if (!wait_for_completion_timeout(&wilc->cfg_event,
+					 WILC_CFG_PKTS_TIMEOUT)) {
+		netdev_dbg(vif->ndev, "%s: Timed Out\n", __func__);
+		ret_size = 0;
+	}
+	wilc->cfg_frame_offset = 0;
+	wilc->cfg_seq_no += 1;
+	mutex_unlock(&wilc->cfg_cmd_lock);
+
+	return ret_size;
+}
+
+int wilc_send_config_pkt(struct wilc_vif *vif, u8 mode, struct wid *wids,
+			 u32 count)
+{
+	int i;
+	int ret = 0;
+	u32 drv = wilc_get_vif_idx(vif);
+
+	if (mode == WILC_GET_CFG) {
+		for (i = 0; i < count; i++) {
+			if (!wilc_wlan_cfg_get(vif, !i,
+					       wids[i].id,
+					       (i == count - 1),
+					       drv)) {
+				ret = -ETIMEDOUT;
+				break;
+			}
+		}
+		for (i = 0; i < count; i++) {
+			wids[i].size = wilc_wlan_cfg_get_val(vif->wilc,
+							     wids[i].id,
+							     wids[i].val,
+							     wids[i].size);
+		}
+	} else if (mode == WILC_SET_CFG) {
+		for (i = 0; i < count; i++) {
+			if (!wilc_wlan_cfg_set(vif, !i,
+					       wids[i].id,
+					       wids[i].val,
+					       wids[i].size,
+					       (i == count - 1),
+					       drv)) {
+				ret = -ETIMEDOUT;
+				break;
+			}
+		}
+	}
+
+	return ret;
+}
+
+static int init_chip(struct net_device *dev)
+{
+	u32 chipid;
+	u32 reg;
+	int ret = 0;
+	struct wilc_vif *vif = netdev_priv(dev);
+	struct wilc *wilc = vif->wilc;
+
+	acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY);
+
+	chipid = wilc_get_chipid(wilc, true);
+
+	if ((chipid & 0xfff) != 0xa0) {
+		ret = wilc->hif_func->hif_read_reg(wilc,
+						   WILC_CORTUS_RESET_MUX_SEL,
+						   &reg);
+		if (ret) {
+			netdev_err(dev, "fail read reg 0x1118\n");
+			goto release;
+		}
+		reg |= BIT(0);
+		ret = wilc->hif_func->hif_write_reg(wilc,
+						    WILC_CORTUS_RESET_MUX_SEL,
+						    reg);
+		if (ret) {
+			netdev_err(dev, "fail write reg 0x1118\n");
+			goto release;
+		}
+		ret = wilc->hif_func->hif_write_reg(wilc,
+						    WILC_CORTUS_BOOT_REGISTER,
+						    WILC_CORTUS_BOOT_FROM_IRAM);
+		if (ret) {
+			netdev_err(dev, "fail write reg 0xc0000\n");
+			goto release;
+		}
+	}
+
+release:
+	release_bus(wilc, WILC_BUS_RELEASE_ONLY);
+
+	return ret;
+}
+
+u32 wilc_get_chipid(struct wilc *wilc, bool update)
+{
+	u32 chipid = 0;
+	u32 rfrevid = 0;
+
+	if (wilc->chipid == 0 || update) {
+		wilc->hif_func->hif_read_reg(wilc, WILC_CHIPID, &chipid);
+		wilc->hif_func->hif_read_reg(wilc, WILC_RF_REVISION_ID,
+					     &rfrevid);
+		if (!is_wilc1000(chipid)) {
+			wilc->chipid = 0;
+			return wilc->chipid;
+		}
+		if (chipid == WILC_1000_BASE_ID_2A) { /* 0x1002A0 */
+			if (rfrevid != 0x1)
+				chipid = WILC_1000_BASE_ID_2A_REV1;
+		} else if (chipid == WILC_1000_BASE_ID_2B) { /* 0x1002B0 */
+			if (rfrevid == 0x4)
+				chipid = WILC_1000_BASE_ID_2B_REV1;
+			else if (rfrevid != 0x3)
+				chipid = WILC_1000_BASE_ID_2B_REV2;
+		}
+
+		wilc->chipid = chipid;
+	}
+	return wilc->chipid;
+}
+
+int wilc_wlan_init(struct net_device *dev)
+{
+	int ret = 0;
+	struct wilc_vif *vif = netdev_priv(dev);
+	struct wilc *wilc;
+
+	wilc = vif->wilc;
+
+	wilc->quit = 0;
+
+	if (!wilc->hif_func->hif_is_init(wilc)) {
+		acquire_bus(wilc, WILC_BUS_ACQUIRE_ONLY);
+		ret = wilc->hif_func->hif_init(wilc, false);
+		release_bus(wilc, WILC_BUS_RELEASE_ONLY);
+		if (ret)
+			goto fail;
+	}
+
+	if (!wilc->vmm_table)
+		wilc->vmm_table = kzalloc(WILC_VMM_TBL_SIZE, GFP_KERNEL);
+
+	if (!wilc->vmm_table) {
+		ret = -ENOBUFS;
+		goto fail;
+	}
+
+	if (!wilc->tx_buffer)
+		wilc->tx_buffer = kmalloc(WILC_TX_BUFF_SIZE, GFP_KERNEL);
+
+	if (!wilc->tx_buffer) {
+		ret = -ENOBUFS;
+		goto fail;
+	}
+
+	if (!wilc->rx_buffer)
+		wilc->rx_buffer = kmalloc(WILC_RX_BUFF_SIZE, GFP_KERNEL);
+
+	if (!wilc->rx_buffer) {
+		ret = -ENOBUFS;
+		goto fail;
+	}
+
+	if (init_chip(dev)) {
+		ret = -EIO;
+		goto fail;
+	}
+
+	return 0;
+
+fail:
+	kfree(wilc->vmm_table);
+	wilc->vmm_table = NULL;
+	kfree(wilc->rx_buffer);
+	wilc->rx_buffer = NULL;
+	kfree(wilc->tx_buffer);
+	wilc->tx_buffer = NULL;
+
+	return ret;
+}