| | 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 | |
| | 13 | enum 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 | |
| | 20 | struct 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 | |
| | 35 | struct 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 |
| | 44 | struct a2mp_cmd_rej { |
| | 45 | __le16 reason; |
| | 46 | __u8 data[]; |
| | 47 | } __packed; |
| | 48 | |
| | 49 | #define A2MP_DISCOVER_REQ 0x02 |
| | 50 | struct a2mp_discov_req { |
| | 51 | __le16 mtu; |
| | 52 | __le16 ext_feat; |
| | 53 | } __packed; |
| | 54 | |
| | 55 | struct a2mp_cl { |
| | 56 | __u8 id; |
| | 57 | __u8 type; |
| | 58 | __u8 status; |
| | 59 | } __packed; |
| | 60 | |
| | 61 | #define A2MP_DISCOVER_RSP 0x03 |
| | 62 | struct 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 |
| | 72 | struct a2mp_info_req { |
| | 73 | __u8 id; |
| | 74 | } __packed; |
| | 75 | |
| | 76 | #define A2MP_GETINFO_RSP 0x07 |
| | 77 | struct 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 |
| | 88 | struct a2mp_amp_assoc_req { |
| | 89 | __u8 id; |
| | 90 | } __packed; |
| | 91 | |
| | 92 | #define A2MP_GETAMPASSOC_RSP 0x09 |
| | 93 | struct 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 |
| | 101 | struct 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 |
| | 109 | struct 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 | |
| | 125 | struct amp_mgr *amp_mgr_get(struct amp_mgr *mgr); |
| | 126 | |
| | 127 | #if IS_ENABLED(CONFIG_BT_HS) |
| | 128 | int amp_mgr_put(struct amp_mgr *mgr); |
| | 129 | struct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn, |
| | 130 | struct sk_buff *skb); |
| | 131 | void a2mp_discover_amp(struct l2cap_chan *chan); |
| | 132 | #else |
| | 133 | static inline int amp_mgr_put(struct amp_mgr *mgr) |
| | 134 | { |
| | 135 | return 0; |
| | 136 | } |
| | 137 | |
| | 138 | static inline struct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn, |
| | 139 | struct sk_buff *skb) |
| | 140 | { |
| | 141 | return NULL; |
| | 142 | } |
| | 143 | |
| | 144 | static inline void a2mp_discover_amp(struct l2cap_chan *chan) |
| | 145 | { |
| | 146 | } |
| | 147 | #endif |
| | 148 | |
| | 149 | void a2mp_send_getinfo_rsp(struct hci_dev *hdev); |
| | 150 | void a2mp_send_getampassoc_rsp(struct hci_dev *hdev, u8 status); |
| | 151 | void a2mp_send_create_phy_link_req(struct hci_dev *hdev, u8 status); |
| | 152 | void a2mp_send_create_phy_link_rsp(struct hci_dev *hdev, u8 status); |
| | 153 | |
| | 154 | #endif /* __A2MP_H */ |
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