drivers/net/wireless/quantenna/qtnfmac/trans.h

   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_ */