1/* 2 Copyright (c) 2010,2011 Code Aurora Forum. All rights reserved. 3 Copyright (c) 2011,2012 Intel Corp. 4 5 This program is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License version 2 and 7 only version 2 as published by the Free Software Foundation. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU General Public License for more details. 13*/ 14 15#ifndef __A2MP_H 16#define __A2MP_H 17 18#include <net/bluetooth/l2cap.h> 19 20enum amp_mgr_state { 21 READ_LOC_AMP_INFO, 22 READ_LOC_AMP_ASSOC, 23 READ_LOC_AMP_ASSOC_FINAL, 24 WRITE_REMOTE_AMP_ASSOC, 25}; 26 27struct amp_mgr { 28 struct list_head list; 29 struct l2cap_conn *l2cap_conn; 30 struct l2cap_chan *a2mp_chan; 31 struct l2cap_chan *bredr_chan; 32 struct kref kref; 33 __u8 ident; 34 __u8 handle; 35 unsigned long state; 36 unsigned long flags; 37 38 struct list_head amp_ctrls; 39 struct mutex amp_ctrls_lock; 40}; 41 42struct a2mp_cmd { 43 __u8 code; 44 __u8 ident; 45 __le16 len; 46 __u8 data[0]; 47} __packed; 48 49/* A2MP command codes */ 50#define A2MP_COMMAND_REJ 0x01 51struct a2mp_cmd_rej { 52 __le16 reason; 53 __u8 data[0]; 54} __packed; 55 56#define A2MP_DISCOVER_REQ 0x02 57struct a2mp_discov_req { 58 __le16 mtu; 59 __le16 ext_feat; 60} __packed; 61 62struct a2mp_cl { 63 __u8 id; 64 __u8 type; 65 __u8 status; 66} __packed; 67 68#define A2MP_DISCOVER_RSP 0x03 69struct a2mp_discov_rsp { 70 __le16 mtu; 71 __le16 ext_feat; 72 struct a2mp_cl cl[0]; 73} __packed; 74 75#define A2MP_CHANGE_NOTIFY 0x04 76#define A2MP_CHANGE_RSP 0x05 77 78#define A2MP_GETINFO_REQ 0x06 79struct a2mp_info_req { 80 __u8 id; 81} __packed; 82 83#define A2MP_GETINFO_RSP 0x07 84struct a2mp_info_rsp { 85 __u8 id; 86 __u8 status; 87 __le32 total_bw; 88 __le32 max_bw; 89 __le32 min_latency; 90 __le16 pal_cap; 91 __le16 assoc_size; 92} __packed; 93 94#define A2MP_GETAMPASSOC_REQ 0x08 95struct a2mp_amp_assoc_req { 96 __u8 id; 97} __packed; 98 99#define A2MP_GETAMPASSOC_RSP 0x09 100struct a2mp_amp_assoc_rsp { 101 __u8 id; 102 __u8 status; 103 __u8 amp_assoc[0]; 104} __packed; 105 106#define A2MP_CREATEPHYSLINK_REQ 0x0A 107#define A2MP_DISCONNPHYSLINK_REQ 0x0C 108struct a2mp_physlink_req { 109 __u8 local_id; 110 __u8 remote_id; 111 __u8 amp_assoc[0]; 112} __packed; 113 114#define A2MP_CREATEPHYSLINK_RSP 0x0B 115#define A2MP_DISCONNPHYSLINK_RSP 0x0D 116struct a2mp_physlink_rsp { 117 __u8 local_id; 118 __u8 remote_id; 119 __u8 status; 120} __packed; 121 122/* A2MP response status */ 123#define A2MP_STATUS_SUCCESS 0x00 124#define A2MP_STATUS_INVALID_CTRL_ID 0x01 125#define A2MP_STATUS_UNABLE_START_LINK_CREATION 0x02 126#define A2MP_STATUS_NO_PHYSICAL_LINK_EXISTS 0x02 127#define A2MP_STATUS_COLLISION_OCCURED 0x03 128#define A2MP_STATUS_DISCONN_REQ_RECVD 0x04 129#define A2MP_STATUS_PHYS_LINK_EXISTS 0x05 130#define A2MP_STATUS_SECURITY_VIOLATION 0x06 131 132struct amp_mgr *amp_mgr_get(struct amp_mgr *mgr); 133 134#if IS_ENABLED(CONFIG_BT_HS) 135int amp_mgr_put(struct amp_mgr *mgr); 136struct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn, 137 struct sk_buff *skb); 138void a2mp_discover_amp(struct l2cap_chan *chan); 139#else 140static inline int amp_mgr_put(struct amp_mgr *mgr) 141{ 142 return 0; 143} 144 145static inline struct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn, 146 struct sk_buff *skb) 147{ 148 return NULL; 149} 150 151static inline void a2mp_discover_amp(struct l2cap_chan *chan) 152{ 153} 154#endif 155 156void a2mp_send_getinfo_rsp(struct hci_dev *hdev); 157void a2mp_send_getampassoc_rsp(struct hci_dev *hdev, u8 status); 158void a2mp_send_create_phy_link_req(struct hci_dev *hdev, u8 status); 159void a2mp_send_create_phy_link_rsp(struct hci_dev *hdev, u8 status); 160 161#endif /* __A2MP_H */ 162