1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* Copyright (c) 2015-2016 Quantenna Communications. All rights reserved. */ 3 4 #ifndef _QTN_FMAC_TRANS_H_ 5 #define _QTN_FMAC_TRANS_H_ 6 7 #include <linux/kernel.h> 8 #include <linux/module.h> 9 #include <linux/skbuff.h> 10 #include <linux/mutex.h> 11 12 #include "qlink.h" 13 14 #define QTNF_CMD_FLAG_RESP_REQ BIT(0) 15 16 #define QTNF_MAX_CMD_BUF_SIZE 2048 17 #define QTNF_DEF_CMD_HROOM 4 18 19 struct qtnf_bus; 20 21 struct qtnf_cmd_ctl_node { 22 struct completion cmd_resp_completion; 23 struct sk_buff *resp_skb; 24 u16 seq_num; 25 bool waiting_for_resp; 26 spinlock_t resp_lock; /* lock for resp_skb & waiting_for_resp changes */ 27 }; 28 29 struct qtnf_qlink_transport { 30 struct qtnf_cmd_ctl_node curr_cmd; 31 struct sk_buff_head event_queue; 32 size_t event_queue_max_len; 33 }; 34 35 void qtnf_trans_init(struct qtnf_bus *bus); 36 void qtnf_trans_free(struct qtnf_bus *bus); 37 38 int qtnf_trans_send_next_cmd(struct qtnf_bus *bus); 39 int qtnf_trans_handle_rx_ctl_packet(struct qtnf_bus *bus, struct sk_buff *skb); 40 int qtnf_trans_send_cmd_with_resp(struct qtnf_bus *bus, 41 struct sk_buff *cmd_skb, 42 struct sk_buff **response_skb); 43 44 #endif /* _QTN_FMAC_TRANS_H_ */ 45