1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* 3 Copyright (c) 2010,2011 Code Aurora Forum. All rights reserved. 4 Copyright (c) 2011,2012 Intel Corp. 5 6*/ 7 8#ifndef __A2MP_H 9#define __A2MP_H 10 11#include <net/bluetooth/l2cap.h> 12 13enum amp_mgr_state { 14 READ_LOC_AMP_INFO, 15 READ_LOC_AMP_ASSOC, 16 READ_LOC_AMP_ASSOC_FINAL, 17 WRITE_REMOTE_AMP_ASSOC, 18}; 19 20struct amp_mgr { 21 struct list_head list; 22 struct l2cap_conn *l2cap_conn; 23 struct l2cap_chan *a2mp_chan; 24 struct l2cap_chan *bredr_chan; 25 struct kref kref; 26 __u8 ident; 27 __u8 handle; 28 unsigned long state; 29 unsigned long flags; 30 31 struct list_head amp_ctrls; 32 struct mutex amp_ctrls_lock; 33}; 34 35struct a2mp_cmd { 36 __u8 code; 37 __u8 ident; 38 __le16 len; 39 __u8 data[]; 40} __packed; 41 42/* A2MP command codes */ 43#define A2MP_COMMAND_REJ 0x01 44struct a2mp_cmd_rej { 45 __le16 reason; 46 __u8 data[]; 47} __packed; 48 49#define A2MP_DISCOVER_REQ 0x02 50struct a2mp_discov_req { 51 __le16 mtu; 52 __le16 ext_feat; 53} __packed; 54 55struct a2mp_cl { 56 __u8 id; 57 __u8 type; 58 __u8 status; 59} __packed; 60 61#define A2MP_DISCOVER_RSP 0x03 62struct a2mp_discov_rsp { 63 __le16 mtu; 64 __le16 ext_feat; 65 struct a2mp_cl cl[]; 66} __packed; 67 68#define A2MP_CHANGE_NOTIFY 0x04 69#define A2MP_CHANGE_RSP 0x05 70 71#define A2MP_GETINFO_REQ 0x06 72struct a2mp_info_req { 73 __u8 id; 74} __packed; 75 76#define A2MP_GETINFO_RSP 0x07 77struct a2mp_info_rsp { 78 __u8 id; 79 __u8 status; 80 __le32 total_bw; 81 __le32 max_bw; 82 __le32 min_latency; 83 __le16 pal_cap; 84 __le16 assoc_size; 85} __packed; 86 87#define A2MP_GETAMPASSOC_REQ 0x08 88struct a2mp_amp_assoc_req { 89 __u8 id; 90} __packed; 91 92#define A2MP_GETAMPASSOC_RSP 0x09 93struct a2mp_amp_assoc_rsp { 94 __u8 id; 95 __u8 status; 96 __u8 amp_assoc[]; 97} __packed; 98 99#define A2MP_CREATEPHYSLINK_REQ 0x0A 100#define A2MP_DISCONNPHYSLINK_REQ 0x0C 101struct a2mp_physlink_req { 102 __u8 local_id; 103 __u8 remote_id; 104 __u8 amp_assoc[]; 105} __packed; 106 107#define A2MP_CREATEPHYSLINK_RSP 0x0B 108#define A2MP_DISCONNPHYSLINK_RSP 0x0D 109struct a2mp_physlink_rsp { 110 __u8 local_id; 111 __u8 remote_id; 112 __u8 status; 113} __packed; 114 115/* A2MP response status */ 116#define A2MP_STATUS_SUCCESS 0x00 117#define A2MP_STATUS_INVALID_CTRL_ID 0x01 118#define A2MP_STATUS_UNABLE_START_LINK_CREATION 0x02 119#define A2MP_STATUS_NO_PHYSICAL_LINK_EXISTS 0x02 120#define A2MP_STATUS_COLLISION_OCCURED 0x03 121#define A2MP_STATUS_DISCONN_REQ_RECVD 0x04 122#define A2MP_STATUS_PHYS_LINK_EXISTS 0x05 123#define A2MP_STATUS_SECURITY_VIOLATION 0x06 124 125struct amp_mgr *amp_mgr_get(struct amp_mgr *mgr); 126 127#if IS_ENABLED(CONFIG_BT_HS) 128int amp_mgr_put(struct amp_mgr *mgr); 129struct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn, 130 struct sk_buff *skb); 131void a2mp_discover_amp(struct l2cap_chan *chan); 132#else 133static inline int amp_mgr_put(struct amp_mgr *mgr) 134{ 135 return 0; 136} 137 138static inline struct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn, 139 struct sk_buff *skb) 140{ 141 return NULL; 142} 143 144static inline void a2mp_discover_amp(struct l2cap_chan *chan) 145{ 146} 147#endif 148 149void a2mp_send_getinfo_rsp(struct hci_dev *hdev); 150void a2mp_send_getampassoc_rsp(struct hci_dev *hdev, u8 status); 151void a2mp_send_create_phy_link_req(struct hci_dev *hdev, u8 status); 152void a2mp_send_create_phy_link_rsp(struct hci_dev *hdev, u8 status); 153 154#endif /* __A2MP_H */ 155