// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2012 - 2018 Microchip Technology Inc., and its subsidiaries.
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* All rights reserved.
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*/
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#include <linux/if_ether.h>
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#include <linux/ip.h>
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#include "wilc_wfi_netdevice.h"
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#include "wilc_wlan_cfg.h"
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static enum chip_ps_states chip_ps_state = CHIP_WAKEDUP;
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static inline bool is_wilc1000(u32 id)
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{
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return ((id & 0xfffff000) == 0x100000 ? true : false);
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}
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static inline void acquire_bus(struct wilc *wilc, enum bus_acquire acquire)
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{
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mutex_lock(&wilc->hif_cs);
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if (acquire == ACQUIRE_AND_WAKEUP)
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chip_wakeup(wilc);
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}
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static inline void release_bus(struct wilc *wilc, enum bus_release release)
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{
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if (release == RELEASE_ALLOW_SLEEP)
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chip_allow_sleep(wilc);
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mutex_unlock(&wilc->hif_cs);
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}
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static void wilc_wlan_txq_remove(struct wilc *wilc, struct txq_entry_t *tqe)
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{
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list_del(&tqe->list);
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wilc->txq_entries -= 1;
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}
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static struct txq_entry_t *
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wilc_wlan_txq_remove_from_head(struct net_device *dev)
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{
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struct txq_entry_t *tqe = NULL;
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unsigned long flags;
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struct wilc_vif *vif = netdev_priv(dev);
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struct wilc *wilc = vif->wilc;
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spin_lock_irqsave(&wilc->txq_spinlock, flags);
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if (!list_empty(&wilc->txq_head.list)) {
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tqe = list_first_entry(&wilc->txq_head.list, struct txq_entry_t,
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list);
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list_del(&tqe->list);
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wilc->txq_entries -= 1;
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}
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spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
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return tqe;
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}
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static void wilc_wlan_txq_add_to_tail(struct net_device *dev,
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struct txq_entry_t *tqe)
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{
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unsigned long flags;
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struct wilc_vif *vif = netdev_priv(dev);
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struct wilc *wilc = vif->wilc;
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spin_lock_irqsave(&wilc->txq_spinlock, flags);
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list_add_tail(&tqe->list, &wilc->txq_head.list);
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wilc->txq_entries += 1;
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spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
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complete(&wilc->txq_event);
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}
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static int wilc_wlan_txq_add_to_head(struct wilc_vif *vif,
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struct txq_entry_t *tqe)
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{
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unsigned long flags;
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struct wilc *wilc = vif->wilc;
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mutex_lock(&wilc->txq_add_to_head_cs);
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spin_lock_irqsave(&wilc->txq_spinlock, flags);
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list_add(&tqe->list, &wilc->txq_head.list);
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wilc->txq_entries += 1;
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spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
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mutex_unlock(&wilc->txq_add_to_head_cs);
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complete(&wilc->txq_event);
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return 0;
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}
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struct ack_session_info;
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struct ack_session_info {
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u32 seq_num;
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u32 bigger_ack_num;
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u16 src_port;
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u16 dst_port;
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u16 status;
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};
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struct pending_acks_info {
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u32 ack_num;
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u32 session_index;
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struct txq_entry_t *txqe;
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};
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#define NOT_TCP_ACK (-1)
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#define MAX_TCP_SESSION 25
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#define MAX_PENDING_ACKS 256
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static struct ack_session_info ack_session_info[2 * MAX_TCP_SESSION];
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static struct pending_acks_info pending_acks_info[MAX_PENDING_ACKS];
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static u32 pending_base;
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static u32 tcp_session;
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static u32 pending_acks;
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static inline int add_tcp_session(u32 src_prt, u32 dst_prt, u32 seq)
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{
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if (tcp_session < 2 * MAX_TCP_SESSION) {
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ack_session_info[tcp_session].seq_num = seq;
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ack_session_info[tcp_session].bigger_ack_num = 0;
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ack_session_info[tcp_session].src_port = src_prt;
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ack_session_info[tcp_session].dst_port = dst_prt;
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tcp_session++;
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}
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return 0;
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}
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static inline int update_tcp_session(u32 index, u32 ack)
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{
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if (index < 2 * MAX_TCP_SESSION &&
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ack > ack_session_info[index].bigger_ack_num)
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ack_session_info[index].bigger_ack_num = ack;
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return 0;
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}
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static inline int add_tcp_pending_ack(u32 ack, u32 session_index,
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struct txq_entry_t *txqe)
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{
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u32 i = pending_base + pending_acks;
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if (i < MAX_PENDING_ACKS) {
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pending_acks_info[i].ack_num = ack;
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pending_acks_info[i].txqe = txqe;
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pending_acks_info[i].session_index = session_index;
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txqe->tcp_pending_ack_idx = i;
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pending_acks++;
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}
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return 0;
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}
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static inline void tcp_process(struct net_device *dev, struct txq_entry_t *tqe)
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{
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void *buffer = tqe->buffer;
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const struct ethhdr *eth_hdr_ptr = buffer;
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int i;
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unsigned long flags;
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struct wilc_vif *vif = netdev_priv(dev);
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struct wilc *wilc = vif->wilc;
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spin_lock_irqsave(&wilc->txq_spinlock, flags);
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if (eth_hdr_ptr->h_proto == htons(ETH_P_IP)) {
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const struct iphdr *ip_hdr_ptr = buffer + ETH_HLEN;
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if (ip_hdr_ptr->protocol == IPPROTO_TCP) {
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const struct tcphdr *tcp_hdr_ptr;
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u32 IHL, total_length, data_offset;
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IHL = ip_hdr_ptr->ihl << 2;
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tcp_hdr_ptr = buffer + ETH_HLEN + IHL;
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total_length = ntohs(ip_hdr_ptr->tot_len);
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data_offset = tcp_hdr_ptr->doff << 2;
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if (total_length == (IHL + data_offset)) {
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u32 seq_no, ack_no;
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seq_no = ntohl(tcp_hdr_ptr->seq);
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ack_no = ntohl(tcp_hdr_ptr->ack_seq);
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for (i = 0; i < tcp_session; i++) {
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u32 j = ack_session_info[i].seq_num;
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if (i < 2 * MAX_TCP_SESSION &&
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j == seq_no) {
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update_tcp_session(i, ack_no);
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break;
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}
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}
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if (i == tcp_session)
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add_tcp_session(0, 0, seq_no);
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add_tcp_pending_ack(ack_no, i, tqe);
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}
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}
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}
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spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
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}
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static int wilc_wlan_txq_filter_dup_tcp_ack(struct net_device *dev)
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{
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struct wilc_vif *vif = netdev_priv(dev);
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struct wilc *wilc = vif->wilc;
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u32 i = 0;
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u32 dropped = 0;
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unsigned long flags;
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spin_lock_irqsave(&wilc->txq_spinlock, flags);
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for (i = pending_base; i < (pending_base + pending_acks); i++) {
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u32 session_index;
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u32 bigger_ack_num;
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if (i >= MAX_PENDING_ACKS)
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break;
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session_index = pending_acks_info[i].session_index;
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if (session_index >= 2 * MAX_TCP_SESSION)
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break;
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bigger_ack_num = ack_session_info[session_index].bigger_ack_num;
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if (pending_acks_info[i].ack_num < bigger_ack_num) {
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struct txq_entry_t *tqe;
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tqe = pending_acks_info[i].txqe;
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if (tqe) {
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wilc_wlan_txq_remove(wilc, tqe);
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tqe->status = 1;
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if (tqe->tx_complete_func)
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tqe->tx_complete_func(tqe->priv,
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tqe->status);
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kfree(tqe);
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dropped++;
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}
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}
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}
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pending_acks = 0;
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tcp_session = 0;
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if (pending_base == 0)
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pending_base = MAX_TCP_SESSION;
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else
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pending_base = 0;
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spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
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while (dropped > 0) {
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wait_for_completion_timeout(&wilc->txq_event,
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msecs_to_jiffies(1));
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dropped--;
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}
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return 1;
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}
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static bool enabled;
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void wilc_enable_tcp_ack_filter(bool value)
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{
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enabled = value;
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}
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static int wilc_wlan_txq_add_cfg_pkt(struct wilc_vif *vif, u8 *buffer,
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u32 buffer_size)
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{
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struct txq_entry_t *tqe;
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struct wilc *wilc = vif->wilc;
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netdev_dbg(vif->ndev, "Adding config packet ...\n");
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if (wilc->quit) {
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netdev_dbg(vif->ndev, "Return due to clear function\n");
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complete(&wilc->cfg_event);
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return 0;
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}
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tqe = kmalloc(sizeof(*tqe), GFP_ATOMIC);
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if (!tqe)
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return 0;
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tqe->type = WILC_CFG_PKT;
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tqe->buffer = buffer;
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tqe->buffer_size = buffer_size;
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tqe->tx_complete_func = NULL;
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tqe->priv = NULL;
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tqe->tcp_pending_ack_idx = NOT_TCP_ACK;
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if (wilc_wlan_txq_add_to_head(vif, tqe)) {
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kfree(tqe);
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return 0;
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}
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return 1;
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}
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int wilc_wlan_txq_add_net_pkt(struct net_device *dev, void *priv, u8 *buffer,
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u32 buffer_size, wilc_tx_complete_func_t func)
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{
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struct txq_entry_t *tqe;
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struct wilc_vif *vif = netdev_priv(dev);
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struct wilc *wilc;
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wilc = vif->wilc;
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if (wilc->quit)
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return 0;
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tqe = kmalloc(sizeof(*tqe), GFP_ATOMIC);
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if (!tqe)
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return 0;
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tqe->type = WILC_NET_PKT;
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tqe->buffer = buffer;
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tqe->buffer_size = buffer_size;
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tqe->tx_complete_func = func;
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tqe->priv = priv;
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tqe->tcp_pending_ack_idx = NOT_TCP_ACK;
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if (enabled)
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tcp_process(dev, tqe);
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wilc_wlan_txq_add_to_tail(dev, tqe);
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return wilc->txq_entries;
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}
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int wilc_wlan_txq_add_mgmt_pkt(struct net_device *dev, void *priv, u8 *buffer,
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u32 buffer_size, wilc_tx_complete_func_t func)
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{
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struct txq_entry_t *tqe;
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struct wilc_vif *vif = netdev_priv(dev);
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struct wilc *wilc;
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wilc = vif->wilc;
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if (wilc->quit)
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return 0;
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tqe = kmalloc(sizeof(*tqe), GFP_KERNEL);
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if (!tqe)
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return 0;
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tqe->type = WILC_MGMT_PKT;
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tqe->buffer = buffer;
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tqe->buffer_size = buffer_size;
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tqe->tx_complete_func = func;
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tqe->priv = priv;
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tqe->tcp_pending_ack_idx = NOT_TCP_ACK;
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wilc_wlan_txq_add_to_tail(dev, tqe);
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return 1;
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}
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static struct txq_entry_t *wilc_wlan_txq_get_first(struct wilc *wilc)
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{
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struct txq_entry_t *tqe = NULL;
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unsigned long flags;
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spin_lock_irqsave(&wilc->txq_spinlock, flags);
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if (!list_empty(&wilc->txq_head.list))
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tqe = list_first_entry(&wilc->txq_head.list, struct txq_entry_t,
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list);
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spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
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return tqe;
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}
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static struct txq_entry_t *wilc_wlan_txq_get_next(struct wilc *wilc,
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struct txq_entry_t *tqe)
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{
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unsigned long flags;
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spin_lock_irqsave(&wilc->txq_spinlock, flags);
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if (!list_is_last(&tqe->list, &wilc->txq_head.list))
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tqe = list_next_entry(tqe, list);
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else
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tqe = NULL;
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spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
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return tqe;
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}
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static void wilc_wlan_rxq_add(struct wilc *wilc, struct rxq_entry_t *rqe)
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{
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if (wilc->quit)
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return;
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mutex_lock(&wilc->rxq_cs);
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list_add_tail(&rqe->list, &wilc->rxq_head.list);
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mutex_unlock(&wilc->rxq_cs);
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}
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static struct rxq_entry_t *wilc_wlan_rxq_remove(struct wilc *wilc)
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{
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struct rxq_entry_t *rqe = NULL;
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mutex_lock(&wilc->rxq_cs);
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if (!list_empty(&wilc->rxq_head.list)) {
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rqe = list_first_entry(&wilc->rxq_head.list, struct rxq_entry_t,
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list);
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list_del(&rqe->list);
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}
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mutex_unlock(&wilc->rxq_cs);
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return rqe;
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}
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void chip_allow_sleep(struct wilc *wilc)
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{
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u32 reg = 0;
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wilc->hif_func->hif_read_reg(wilc, 0xf0, ®);
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wilc->hif_func->hif_write_reg(wilc, 0xf0, reg & ~BIT(0));
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wilc->hif_func->hif_write_reg(wilc, 0xfa, 0);
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}
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EXPORT_SYMBOL_GPL(chip_allow_sleep);
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void chip_wakeup(struct wilc *wilc)
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{
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u32 reg, clk_status_reg;
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if ((wilc->io_type & 0x1) == HIF_SPI) {
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do {
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wilc->hif_func->hif_read_reg(wilc, 1, ®);
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wilc->hif_func->hif_write_reg(wilc, 1, reg | BIT(1));
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wilc->hif_func->hif_write_reg(wilc, 1, reg & ~BIT(1));
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do {
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usleep_range(2 * 1000, 2 * 1000);
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wilc_get_chipid(wilc, true);
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} while (wilc_get_chipid(wilc, true) == 0);
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} while (wilc_get_chipid(wilc, true) == 0);
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} else if ((wilc->io_type & 0x1) == HIF_SDIO) {
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wilc->hif_func->hif_write_reg(wilc, 0xfa, 1);
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udelay(200);
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wilc->hif_func->hif_read_reg(wilc, 0xf0, ®);
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do {
|
wilc->hif_func->hif_write_reg(wilc, 0xf0,
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reg | BIT(0));
|
wilc->hif_func->hif_read_reg(wilc, 0xf1,
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&clk_status_reg);
|
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while ((clk_status_reg & 0x1) == 0) {
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usleep_range(2 * 1000, 2 * 1000);
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wilc->hif_func->hif_read_reg(wilc, 0xf1,
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&clk_status_reg);
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}
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if ((clk_status_reg & 0x1) == 0) {
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wilc->hif_func->hif_write_reg(wilc, 0xf0,
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reg & (~BIT(0)));
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}
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} while ((clk_status_reg & 0x1) == 0);
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}
|
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if (chip_ps_state == CHIP_SLEEPING_MANUAL) {
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if (wilc_get_chipid(wilc, false) < 0x1002b0) {
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u32 val32;
|
|
wilc->hif_func->hif_read_reg(wilc, 0x1e1c, &val32);
|
val32 |= BIT(6);
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wilc->hif_func->hif_write_reg(wilc, 0x1e1c, val32);
|
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wilc->hif_func->hif_read_reg(wilc, 0x1e9c, &val32);
|
val32 |= BIT(6);
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wilc->hif_func->hif_write_reg(wilc, 0x1e9c, val32);
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}
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}
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chip_ps_state = CHIP_WAKEDUP;
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}
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EXPORT_SYMBOL_GPL(chip_wakeup);
|
|
void wilc_chip_sleep_manually(struct wilc *wilc)
|
{
|
if (chip_ps_state != CHIP_WAKEDUP)
|
return;
|
acquire_bus(wilc, ACQUIRE_ONLY);
|
|
chip_allow_sleep(wilc);
|
wilc->hif_func->hif_write_reg(wilc, 0x10a8, 1);
|
|
chip_ps_state = CHIP_SLEEPING_MANUAL;
|
release_bus(wilc, RELEASE_ONLY);
|
}
|
EXPORT_SYMBOL_GPL(wilc_chip_sleep_manually);
|
|
void host_wakeup_notify(struct wilc *wilc)
|
{
|
acquire_bus(wilc, ACQUIRE_ONLY);
|
wilc->hif_func->hif_write_reg(wilc, 0x10b0, 1);
|
release_bus(wilc, RELEASE_ONLY);
|
}
|
EXPORT_SYMBOL_GPL(host_wakeup_notify);
|
|
void host_sleep_notify(struct wilc *wilc)
|
{
|
acquire_bus(wilc, ACQUIRE_ONLY);
|
wilc->hif_func->hif_write_reg(wilc, 0x10ac, 1);
|
release_bus(wilc, RELEASE_ONLY);
|
}
|
EXPORT_SYMBOL_GPL(host_sleep_notify);
|
|
int wilc_wlan_handle_txq(struct net_device *dev, u32 *txq_count)
|
{
|
int i, entries = 0;
|
u32 sum;
|
u32 reg;
|
u32 offset = 0;
|
int vmm_sz = 0;
|
struct txq_entry_t *tqe;
|
int ret = 0;
|
int counter;
|
int timeout;
|
u32 vmm_table[WILC_VMM_TBL_SIZE];
|
struct wilc_vif *vif = netdev_priv(dev);
|
struct wilc *wilc = vif->wilc;
|
const struct wilc_hif_func *func;
|
u8 *txb = wilc->tx_buffer;
|
|
if (wilc->quit)
|
goto out;
|
|
mutex_lock(&wilc->txq_add_to_head_cs);
|
wilc_wlan_txq_filter_dup_tcp_ack(dev);
|
tqe = wilc_wlan_txq_get_first(wilc);
|
i = 0;
|
sum = 0;
|
do {
|
if (tqe && (i < (WILC_VMM_TBL_SIZE - 1))) {
|
if (tqe->type == WILC_CFG_PKT)
|
vmm_sz = ETH_CONFIG_PKT_HDR_OFFSET;
|
|
else if (tqe->type == WILC_NET_PKT)
|
vmm_sz = ETH_ETHERNET_HDR_OFFSET;
|
|
else
|
vmm_sz = HOST_HDR_OFFSET;
|
|
vmm_sz += tqe->buffer_size;
|
|
if (vmm_sz & 0x3)
|
vmm_sz = (vmm_sz + 4) & ~0x3;
|
|
if ((sum + vmm_sz) > LINUX_TX_SIZE)
|
break;
|
|
vmm_table[i] = vmm_sz / 4;
|
if (tqe->type == WILC_CFG_PKT)
|
vmm_table[i] |= BIT(10);
|
cpu_to_le32s(&vmm_table[i]);
|
|
i++;
|
sum += vmm_sz;
|
tqe = wilc_wlan_txq_get_next(wilc, tqe);
|
} else {
|
break;
|
}
|
} while (1);
|
|
if (i == 0)
|
goto out;
|
vmm_table[i] = 0x0;
|
|
acquire_bus(wilc, ACQUIRE_AND_WAKEUP);
|
counter = 0;
|
func = wilc->hif_func;
|
do {
|
ret = func->hif_read_reg(wilc, WILC_HOST_TX_CTRL, ®);
|
if (!ret)
|
break;
|
|
if ((reg & 0x1) == 0)
|
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, ®);
|
if (!ret)
|
break;
|
if ((reg >> 2) & 0x1) {
|
entries = ((reg >> 3) & 0x3f);
|
break;
|
}
|
release_bus(wilc, RELEASE_ALLOW_SLEEP);
|
} 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, ®);
|
if (!ret)
|
break;
|
reg &= ~BIT(0);
|
ret = func->hif_write_reg(wilc, WILC_HOST_TX_CTRL, reg);
|
if (!ret)
|
break;
|
break;
|
}
|
break;
|
} while (1);
|
|
if (!ret)
|
goto out_release_bus;
|
|
if (entries == 0) {
|
ret = WILC_TX_ERR_NO_BUF;
|
goto out_release_bus;
|
}
|
|
release_bus(wilc, RELEASE_ALLOW_SLEEP);
|
|
offset = 0;
|
i = 0;
|
do {
|
u32 header, buffer_offset;
|
char *bssid;
|
|
tqe = wilc_wlan_txq_remove_from_head(dev);
|
if (!tqe)
|
break;
|
|
if (vmm_table[i] == 0)
|
break;
|
|
le32_to_cpus(&vmm_table[i]);
|
vmm_sz = (vmm_table[i] & 0x3ff);
|
vmm_sz *= 4;
|
header = (tqe->type << 31) |
|
(tqe->buffer_size << 15) |
|
vmm_sz;
|
if (tqe->type == WILC_MGMT_PKT)
|
header |= BIT(30);
|
else
|
header &= ~BIT(30);
|
|
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) {
|
bssid = ((struct tx_complete_data *)(tqe->priv))->bssid;
|
|
buffer_offset = ETH_ETHERNET_HDR_OFFSET;
|
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->tcp_pending_ack_idx != NOT_TCP_ACK &&
|
tqe->tcp_pending_ack_idx < MAX_PENDING_ACKS)
|
pending_acks_info[tqe->tcp_pending_ack_idx].txqe = NULL;
|
kfree(tqe);
|
} while (--entries);
|
|
acquire_bus(wilc, 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, RELEASE_ALLOW_SLEEP);
|
|
out:
|
mutex_unlock(&wilc->txq_add_to_head_cs);
|
|
*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;
|
memcpy(&header, buff_ptr, 4);
|
le32_to_cpus(&header);
|
|
is_cfg_packet = (header >> 31) & 0x1;
|
pkt_offset = (header >> 22) & 0x1ff;
|
tp_len = (header >> 11) & 0x7ff;
|
pkt_len = header & 0x7ff;
|
|
if (pkt_len == 0 || tp_len == 0)
|
break;
|
|
if (pkt_offset & IS_MANAGMEMENT) {
|
pkt_offset &= ~(IS_MANAGMEMENT |
|
IS_MANAGMEMENT_CALLBACK |
|
IS_MGMT_STATUS_SUCCES);
|
buff_ptr += HOST_HDR_OFFSET;
|
wilc_wfi_mgmt_rx(wilc, buff_ptr, pkt_len);
|
} else {
|
if (!is_cfg_packet) {
|
if (pkt_len > 0) {
|
wilc_frmw_to_linux(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;
|
if (offset >= size)
|
break;
|
} while (1);
|
}
|
|
static void wilc_wlan_handle_rxq(struct wilc *wilc)
|
{
|
int size;
|
u8 *buffer;
|
struct rxq_entry_t *rqe;
|
|
do {
|
if (wilc->quit) {
|
complete(&wilc->cfg_event);
|
break;
|
}
|
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);
|
} while (1);
|
}
|
|
static void wilc_unknown_isr_ext(struct wilc *wilc)
|
{
|
wilc->hif_func->hif_clear_int_ext(wilc, 0);
|
}
|
|
static void wilc_pllupdate_isr_ext(struct wilc *wilc, u32 int_stats)
|
{
|
int trials = 10;
|
|
wilc->hif_func->hif_clear_int_ext(wilc, PLL_INT_CLR);
|
|
if (wilc->io_type == HIF_SDIO)
|
mdelay(WILC_PLL_TO_SDIO);
|
else
|
mdelay(WILC_PLL_TO_SPI);
|
|
while (!(is_wilc1000(wilc_get_chipid(wilc, true)) && --trials))
|
mdelay(1);
|
}
|
|
static void wilc_sleeptimer_isr_ext(struct wilc *wilc, u32 int_stats1)
|
{
|
wilc->hif_func->hif_clear_int_ext(wilc, SLEEP_INT_CLR);
|
}
|
|
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 = (int_status & 0x7fff) << 2;
|
|
while (!size && retries < 10) {
|
wilc->hif_func->hif_read_size(wilc, &size);
|
size = (size & 0x7fff) << 2;
|
retries++;
|
}
|
|
if (size <= 0)
|
return;
|
|
if (LINUX_RX_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, ACQUIRE_AND_WAKEUP);
|
wilc->hif_func->hif_read_int(wilc, &int_status);
|
|
if (int_status & PLL_INT_EXT)
|
wilc_pllupdate_isr_ext(wilc, int_status);
|
|
if (int_status & DATA_INT_EXT)
|
wilc_wlan_handle_isr_ext(wilc, int_status);
|
|
if (int_status & SLEEP_INT_EXT)
|
wilc_sleeptimer_isr_ext(wilc, int_status);
|
|
if (!(int_status & (ALL_INT_EXT)))
|
wilc_unknown_isr_ext(wilc);
|
|
release_bus(wilc, 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;
|
|
blksz = BIT(12);
|
|
dma_buffer = kmalloc(blksz, GFP_KERNEL);
|
if (!dma_buffer)
|
return -EIO;
|
|
offset = 0;
|
do {
|
memcpy(&addr, &buffer[offset], 4);
|
memcpy(&size, &buffer[offset + 4], 4);
|
le32_to_cpus(&addr);
|
le32_to_cpus(&size);
|
acquire_bus(wilc, ACQUIRE_ONLY);
|
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, RELEASE_ONLY);
|
|
if (!ret) {
|
ret = -EIO;
|
goto fail;
|
}
|
} while (offset < buffer_size);
|
|
fail:
|
|
kfree(dma_buffer);
|
|
return (ret < 0) ? ret : 0;
|
}
|
|
int wilc_wlan_start(struct wilc *wilc)
|
{
|
u32 reg = 0;
|
int ret;
|
u32 chipid;
|
|
if (wilc->io_type == HIF_SDIO) {
|
reg = 0;
|
reg |= BIT(3);
|
} else if (wilc->io_type == HIF_SPI) {
|
reg = 1;
|
}
|
acquire_bus(wilc, ACQUIRE_ONLY);
|
ret = wilc->hif_func->hif_write_reg(wilc, WILC_VMM_CORE_CFG, reg);
|
if (!ret) {
|
release_bus(wilc, RELEASE_ONLY);
|
return -EIO;
|
}
|
reg = 0;
|
if (wilc->io_type == HIF_SDIO && wilc->dev_irq_num)
|
reg |= WILC_HAVE_SDIO_IRQ_GPIO;
|
|
#ifdef WILC_DISABLE_PMU
|
#else
|
reg |= WILC_HAVE_USE_PMU;
|
#endif
|
|
#ifdef WILC_SLEEP_CLK_SRC_XO
|
reg |= WILC_HAVE_SLEEP_CLK_SRC_XO;
|
#elif defined WILC_SLEEP_CLK_SRC_RTC
|
reg |= WILC_HAVE_SLEEP_CLK_SRC_RTC;
|
#endif
|
|
#ifdef WILC_EXT_PA_INV_TX_RX
|
reg |= WILC_HAVE_EXT_PA_INV_TX_RX;
|
#endif
|
reg |= WILC_HAVE_USE_IRQ_AS_HOST_WAKE;
|
reg |= WILC_HAVE_LEGACY_RF_SETTINGS;
|
#ifdef XTAL_24
|
reg |= WILC_HAVE_XTAL_24;
|
#endif
|
#ifdef DISABLE_WILC_UART
|
reg |= WILC_HAVE_DISABLE_WILC_UART;
|
#endif
|
|
ret = wilc->hif_func->hif_write_reg(wilc, WILC_GP_REG_1, reg);
|
if (!ret) {
|
release_bus(wilc, RELEASE_ONLY);
|
return -EIO;
|
}
|
|
wilc->hif_func->hif_sync_ext(wilc, NUM_INT_EXT);
|
|
ret = wilc->hif_func->hif_read_reg(wilc, 0x1000, &chipid);
|
if (!ret) {
|
release_bus(wilc, RELEASE_ONLY);
|
return -EIO;
|
}
|
|
wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, ®);
|
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 |= 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, ®);
|
release_bus(wilc, RELEASE_ONLY);
|
|
return (ret < 0) ? ret : 0;
|
}
|
|
int wilc_wlan_stop(struct wilc *wilc)
|
{
|
u32 reg = 0;
|
int ret;
|
u8 timeout = 10;
|
|
acquire_bus(wilc, ACQUIRE_AND_WAKEUP);
|
|
ret = wilc->hif_func->hif_read_reg(wilc, WILC_GLB_RESET_0, ®);
|
if (!ret) {
|
release_bus(wilc, RELEASE_ALLOW_SLEEP);
|
return ret;
|
}
|
|
reg &= ~BIT(10);
|
ret = wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
|
if (!ret) {
|
release_bus(wilc, RELEASE_ALLOW_SLEEP);
|
return ret;
|
}
|
|
do {
|
ret = wilc->hif_func->hif_read_reg(wilc,
|
WILC_GLB_RESET_0, ®);
|
if (!ret) {
|
release_bus(wilc, RELEASE_ALLOW_SLEEP);
|
return ret;
|
}
|
|
if ((reg & BIT(10))) {
|
reg &= ~BIT(10);
|
ret = wilc->hif_func->hif_write_reg(wilc,
|
WILC_GLB_RESET_0,
|
reg);
|
timeout--;
|
} else {
|
ret = wilc->hif_func->hif_read_reg(wilc,
|
WILC_GLB_RESET_0,
|
®);
|
if (!ret) {
|
release_bus(wilc, RELEASE_ALLOW_SLEEP);
|
return ret;
|
}
|
break;
|
}
|
|
} while (timeout);
|
reg = (BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(8) | BIT(9) | BIT(26) |
|
BIT(29) | BIT(30) | BIT(31));
|
|
wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
|
reg = (u32)~BIT(10);
|
|
ret = wilc->hif_func->hif_write_reg(wilc, WILC_GLB_RESET_0, reg);
|
|
release_bus(wilc, RELEASE_ALLOW_SLEEP);
|
|
return ret;
|
}
|
|
void wilc_wlan_cleanup(struct net_device *dev)
|
{
|
struct txq_entry_t *tqe;
|
struct rxq_entry_t *rqe;
|
u32 reg = 0;
|
int ret;
|
struct wilc_vif *vif = netdev_priv(dev);
|
struct wilc *wilc = vif->wilc;
|
|
wilc->quit = 1;
|
do {
|
tqe = wilc_wlan_txq_remove_from_head(dev);
|
if (!tqe)
|
break;
|
if (tqe->tx_complete_func)
|
tqe->tx_complete_func(tqe->priv, 0);
|
kfree(tqe);
|
} while (1);
|
|
do {
|
rqe = wilc_wlan_rxq_remove(wilc);
|
if (!rqe)
|
break;
|
kfree(rqe);
|
} while (1);
|
|
kfree(wilc->rx_buffer);
|
wilc->rx_buffer = NULL;
|
kfree(wilc->tx_buffer);
|
wilc->tx_buffer = NULL;
|
|
acquire_bus(wilc, ACQUIRE_AND_WAKEUP);
|
|
ret = wilc->hif_func->hif_read_reg(wilc, WILC_GP_REG_0, ®);
|
if (!ret)
|
release_bus(wilc, RELEASE_ALLOW_SLEEP);
|
|
ret = wilc->hif_func->hif_write_reg(wilc, WILC_GP_REG_0,
|
(reg | ABORT_INT));
|
if (!ret)
|
release_bus(wilc, RELEASE_ALLOW_SLEEP);
|
|
release_bus(wilc, RELEASE_ALLOW_SLEEP);
|
wilc->hif_func->hif_deinit(NULL);
|
}
|
|
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 total_len = wilc->cfg_frame_offset + 4 + DRIVER_HANDLER_SIZE;
|
int seq_no = wilc->cfg_seq_no % 256;
|
int driver_handler = (u32)drv_handler;
|
|
if (type == WILC_CFG_SET)
|
cfg->wid_header[0] = 'W';
|
else
|
cfg->wid_header[0] = 'Q';
|
cfg->wid_header[1] = seq_no;
|
cfg->wid_header[2] = (u8)total_len;
|
cfg->wid_header[3] = (u8)(total_len >> 8);
|
cfg->wid_header[4] = (u8)driver_handler;
|
cfg->wid_header[5] = (u8)(driver_handler >> 8);
|
cfg->wid_header[6] = (u8)(driver_handler >> 16);
|
cfg->wid_header[7] = (u8)(driver_handler >> 24);
|
wilc->cfg_seq_no = seq_no;
|
|
if (!wilc_wlan_txq_add_cfg_pkt(vif, &cfg->wid_header[0], total_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;
|
|
if (wilc->cfg_frame_in_use)
|
return 0;
|
|
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)
|
return ret_size;
|
|
netdev_dbg(vif->ndev, "%s: seqno[%d]\n", __func__, wilc->cfg_seq_no);
|
wilc->cfg_frame_in_use = 1;
|
|
if (wilc_wlan_cfg_commit(vif, WILC_CFG_SET, drv_handler))
|
ret_size = 0;
|
|
if (!wait_for_completion_timeout(&wilc->cfg_event,
|
msecs_to_jiffies(CFG_PKTS_TIMEOUT))) {
|
netdev_dbg(vif->ndev, "%s: Timed Out\n", __func__);
|
ret_size = 0;
|
}
|
|
wilc->cfg_frame_in_use = 0;
|
wilc->cfg_frame_offset = 0;
|
wilc->cfg_seq_no += 1;
|
|
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;
|
|
if (wilc->cfg_frame_in_use)
|
return 0;
|
|
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)
|
return ret_size;
|
|
wilc->cfg_frame_in_use = 1;
|
|
if (wilc_wlan_cfg_commit(vif, WILC_CFG_QUERY, drv_handler))
|
ret_size = 0;
|
|
if (!wait_for_completion_timeout(&wilc->cfg_event,
|
msecs_to_jiffies(CFG_PKTS_TIMEOUT))) {
|
netdev_dbg(vif->ndev, "%s: Timed Out\n", __func__);
|
ret_size = 0;
|
}
|
wilc->cfg_frame_in_use = 0;
|
wilc->cfg_frame_offset = 0;
|
wilc->cfg_seq_no += 1;
|
|
return ret_size;
|
}
|
|
int wilc_wlan_cfg_get_val(u16 wid, u8 *buffer, u32 buffer_size)
|
{
|
return wilc_wlan_cfg_get_wid_value(wid, buffer, buffer_size);
|
}
|
|
int wilc_send_config_pkt(struct wilc_vif *vif, u8 mode, struct wid *wids,
|
u32 count, u32 drv)
|
{
|
int i;
|
int ret = 0;
|
|
if (mode == 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(wids[i].id,
|
wids[i].val,
|
wids[i].size);
|
}
|
} else if (mode == 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 u32 init_chip(struct net_device *dev)
|
{
|
u32 chipid;
|
u32 reg, ret = 0;
|
struct wilc_vif *vif = netdev_priv(dev);
|
struct wilc *wilc = vif->wilc;
|
|
acquire_bus(wilc, ACQUIRE_ONLY);
|
|
chipid = wilc_get_chipid(wilc, true);
|
|
if ((chipid & 0xfff) != 0xa0) {
|
ret = wilc->hif_func->hif_read_reg(wilc, 0x1118, ®);
|
if (!ret) {
|
netdev_err(dev, "fail read reg 0x1118\n");
|
return ret;
|
}
|
reg |= BIT(0);
|
ret = wilc->hif_func->hif_write_reg(wilc, 0x1118, reg);
|
if (!ret) {
|
netdev_err(dev, "fail write reg 0x1118\n");
|
return ret;
|
}
|
ret = wilc->hif_func->hif_write_reg(wilc, 0xc0000, 0x71);
|
if (!ret) {
|
netdev_err(dev, "fail write reg 0xc0000\n");
|
return ret;
|
}
|
}
|
|
release_bus(wilc, RELEASE_ONLY);
|
|
return ret;
|
}
|
|
u32 wilc_get_chipid(struct wilc *wilc, bool update)
|
{
|
static u32 chipid;
|
u32 tempchipid = 0;
|
u32 rfrevid = 0;
|
|
if (chipid == 0 || update) {
|
wilc->hif_func->hif_read_reg(wilc, 0x1000, &tempchipid);
|
wilc->hif_func->hif_read_reg(wilc, 0x13f4, &rfrevid);
|
if (!is_wilc1000(tempchipid)) {
|
chipid = 0;
|
return chipid;
|
}
|
if (tempchipid == 0x1002a0) {
|
if (rfrevid != 0x1)
|
tempchipid = 0x1002a1;
|
} else if (tempchipid == 0x1002b0) {
|
if (rfrevid == 0x4)
|
tempchipid = 0x1002b1;
|
else if (rfrevid != 0x3)
|
tempchipid = 0x1002b2;
|
}
|
|
chipid = tempchipid;
|
}
|
return 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_init(wilc, false)) {
|
ret = -EIO;
|
goto fail;
|
}
|
|
if (!wilc_wlan_cfg_init()) {
|
ret = -ENOBUFS;
|
goto fail;
|
}
|
|
if (!wilc->tx_buffer)
|
wilc->tx_buffer = kmalloc(LINUX_TX_SIZE, GFP_KERNEL);
|
|
if (!wilc->tx_buffer) {
|
ret = -ENOBUFS;
|
goto fail;
|
}
|
|
if (!wilc->rx_buffer)
|
wilc->rx_buffer = kmalloc(LINUX_RX_SIZE, GFP_KERNEL);
|
|
if (!wilc->rx_buffer) {
|
ret = -ENOBUFS;
|
goto fail;
|
}
|
|
if (!init_chip(dev)) {
|
ret = -EIO;
|
goto fail;
|
}
|
|
return 1;
|
|
fail:
|
|
kfree(wilc->rx_buffer);
|
wilc->rx_buffer = NULL;
|
kfree(wilc->tx_buffer);
|
wilc->tx_buffer = NULL;
|
|
return ret;
|
}
|
