xref: /linux/net/nfc/hci/hci.h (revision 58e16d792a6a8c6b750f637a4649967fcac853dc)
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * Copyright (C) 2012  Intel Corporation. All rights reserved.
4  */
5 
6 #ifndef __LOCAL_HCI_H
7 #define __LOCAL_HCI_H
8 
9 #include <net/nfc/hci.h>
10 
11 struct gate_pipe_map {
12 	u8 gate;
13 	u8 pipe;
14 };
15 
16 struct hcp_message {
17 	u8 header;		/* type -cmd,evt,rsp- + instruction */
18 	u8 data[];
19 } __packed;
20 
21 struct hcp_packet {
22 	u8 header;		/* cbit+pipe */
23 	struct hcp_message message;
24 } __packed;
25 
26 struct hcp_exec_waiter {
27 	wait_queue_head_t *wq;
28 	bool exec_complete;
29 	int exec_result;
30 	struct sk_buff *result_skb;
31 };
32 
33 struct hci_msg {
34 	struct list_head msg_l;
35 	struct sk_buff_head msg_frags;
36 	bool wait_response;
37 	data_exchange_cb_t cb;
38 	void *cb_context;
39 	unsigned long completion_delay;
40 };
41 
42 struct hci_create_pipe_params {
43 	u8 src_gate;
44 	u8 dest_host;
45 	u8 dest_gate;
46 } __packed;
47 
48 struct hci_create_pipe_resp {
49 	u8 src_host;
50 	u8 src_gate;
51 	u8 dest_host;
52 	u8 dest_gate;
53 	u8 pipe;
54 } __packed;
55 
56 struct hci_delete_pipe_noti {
57 	u8 pipe;
58 } __packed;
59 
60 struct hci_all_pipe_cleared_noti {
61 	u8 host;
62 } __packed;
63 
64 #define NFC_HCI_FRAGMENT	0x7f
65 
66 #define HCP_HEADER(type, instr) ((((type) & 0x03) << 6) | ((instr) & 0x3f))
67 #define HCP_MSG_GET_TYPE(header) ((header & 0xc0) >> 6)
68 #define HCP_MSG_GET_CMD(header) (header & 0x3f)
69 
70 int nfc_hci_hcp_message_tx(struct nfc_hci_dev *hdev, u8 pipe,
71 			   u8 type, u8 instruction,
72 			   const u8 *payload, size_t payload_len,
73 			   data_exchange_cb_t cb, void *cb_context,
74 			   unsigned long completion_delay);
75 
76 void nfc_hci_hcp_message_rx(struct nfc_hci_dev *hdev, u8 pipe, u8 type,
77 			    u8 instruction, struct sk_buff *skb);
78 
79 /* HCP headers */
80 #define NFC_HCI_HCP_PACKET_HEADER_LEN	1
81 #define NFC_HCI_HCP_MESSAGE_HEADER_LEN	1
82 #define NFC_HCI_HCP_HEADER_LEN		2
83 
84 /* HCP types */
85 #define NFC_HCI_HCP_COMMAND	0x00
86 #define NFC_HCI_HCP_EVENT	0x01
87 #define NFC_HCI_HCP_RESPONSE	0x02
88 
89 /* Generic commands */
90 #define NFC_HCI_ANY_SET_PARAMETER	0x01
91 #define NFC_HCI_ANY_GET_PARAMETER	0x02
92 #define NFC_HCI_ANY_OPEN_PIPE		0x03
93 #define NFC_HCI_ANY_CLOSE_PIPE		0x04
94 
95 /* Reader RF commands */
96 #define NFC_HCI_WR_XCHG_DATA		0x10
97 
98 /* Admin commands */
99 #define NFC_HCI_ADM_CREATE_PIPE			0x10
100 #define NFC_HCI_ADM_DELETE_PIPE			0x11
101 #define NFC_HCI_ADM_NOTIFY_PIPE_CREATED		0x12
102 #define NFC_HCI_ADM_NOTIFY_PIPE_DELETED		0x13
103 #define NFC_HCI_ADM_CLEAR_ALL_PIPE		0x14
104 #define NFC_HCI_ADM_NOTIFY_ALL_PIPE_CLEARED	0x15
105 
106 /* Generic responses */
107 #define NFC_HCI_ANY_OK				0x00
108 #define NFC_HCI_ANY_E_NOT_CONNECTED		0x01
109 #define NFC_HCI_ANY_E_CMD_PAR_UNKNOWN		0x02
110 #define NFC_HCI_ANY_E_NOK			0x03
111 #define NFC_HCI_ANY_E_PIPES_FULL		0x04
112 #define NFC_HCI_ANY_E_REG_PAR_UNKNOWN		0x05
113 #define NFC_HCI_ANY_E_PIPE_NOT_OPENED		0x06
114 #define NFC_HCI_ANY_E_CMD_NOT_SUPPORTED		0x07
115 #define NFC_HCI_ANY_E_INHIBITED			0x08
116 #define NFC_HCI_ANY_E_TIMEOUT			0x09
117 #define NFC_HCI_ANY_E_REG_ACCESS_DENIED		0x0a
118 #define NFC_HCI_ANY_E_PIPE_ACCESS_DENIED	0x0b
119 
120 #endif /* __LOCAL_HCI_H */
121