1 /* 2 * Copyright (c) 2015-2016 Quantenna Communications, Inc. 3 * All rights reserved. 4 * 5 * This program is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU General Public License 7 * as published by the Free Software Foundation; either version 2 8 * of the License, or (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 */ 16 17 #ifndef _QTN_FMAC_TRANS_H_ 18 #define _QTN_FMAC_TRANS_H_ 19 20 #include <linux/kernel.h> 21 #include <linux/module.h> 22 #include <linux/skbuff.h> 23 #include <linux/mutex.h> 24 25 #include "qlink.h" 26 27 #define QTNF_CMD_FLAG_RESP_REQ BIT(0) 28 29 #define QTNF_MAX_CMD_BUF_SIZE 2048 30 #define QTNF_DEF_CMD_HROOM 4 31 32 struct qtnf_bus; 33 34 struct qtnf_cmd_ctl_node { 35 struct completion cmd_resp_completion; 36 struct sk_buff *resp_skb; 37 u16 seq_num; 38 bool waiting_for_resp; 39 spinlock_t resp_lock; /* lock for resp_skb & waiting_for_resp changes */ 40 }; 41 42 struct qtnf_qlink_transport { 43 struct qtnf_cmd_ctl_node curr_cmd; 44 struct sk_buff_head event_queue; 45 size_t event_queue_max_len; 46 }; 47 48 void qtnf_trans_init(struct qtnf_bus *bus); 49 void qtnf_trans_free(struct qtnf_bus *bus); 50 51 int qtnf_trans_send_next_cmd(struct qtnf_bus *bus); 52 int qtnf_trans_handle_rx_ctl_packet(struct qtnf_bus *bus, struct sk_buff *skb); 53 int qtnf_trans_send_cmd_with_resp(struct qtnf_bus *bus, 54 struct sk_buff *cmd_skb, 55 struct sk_buff **response_skb); 56 57 #endif /* _QTN_FMAC_TRANS_H_ */ 58