1/*
  2 * Copyright (C) 2012  Intel Corporation. All rights reserved.
  3 *
  4 * This program is free software; you can redistribute it and/or modify
  5 * it under the terms of the GNU General Public License as published by
  6 * the Free Software Foundation; either version 2 of the License, or
  7 * (at your option) any later version.
  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 * You should have received a copy of the GNU General Public License
 15 * along with this program; if not, write to the
 16 * Free Software Foundation, Inc.,
 17 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 18 */
 19
 20#ifndef __LOCAL_HCI_H
 21#define __LOCAL_HCI_H
 22
 23struct gate_pipe_map {
 24	u8 gate;
 25	u8 pipe;
 26};
 27
 28struct hcp_message {
 29	u8 header;		/* type -cmd,evt,rsp- + instruction */
 30	u8 data[];
 31} __packed;
 32
 33struct hcp_packet {
 34	u8 header;		/* cbit+pipe */
 35	struct hcp_message message;
 36} __packed;
 37
 38/*
 39 * HCI command execution completion callback.
 40 * result will be one of the HCI response codes.
 41 * skb contains the response data and must be disposed.
 42 */
 43typedef void (*hci_cmd_cb_t) (struct nfc_hci_dev *hdev, u8 result,
 44			      struct sk_buff *skb, void *cb_data);
 45
 46struct hcp_exec_waiter {
 47	wait_queue_head_t *wq;
 48	bool exec_complete;
 49	int exec_result;
 50	struct sk_buff *result_skb;
 51};
 52
 53struct hci_msg {
 54	struct list_head msg_l;
 55	struct sk_buff_head msg_frags;
 56	bool wait_response;
 57	hci_cmd_cb_t cb;
 58	void *cb_context;
 59	unsigned long completion_delay;
 60};
 61
 62struct hci_create_pipe_params {
 63	u8 src_gate;
 64	u8 dest_host;
 65	u8 dest_gate;
 66} __packed;
 67
 68struct hci_create_pipe_resp {
 69	u8 src_host;
 70	u8 src_gate;
 71	u8 dest_host;
 72	u8 dest_gate;
 73	u8 pipe;
 74} __packed;
 75
 76#define NFC_HCI_FRAGMENT	0x7f
 77
 78#define HCP_HEADER(type, instr) ((((type) & 0x03) << 6) | ((instr) & 0x3f))
 79#define HCP_MSG_GET_TYPE(header) ((header & 0xc0) >> 6)
 80#define HCP_MSG_GET_CMD(header) (header & 0x3f)
 81
 82int nfc_hci_hcp_message_tx(struct nfc_hci_dev *hdev, u8 pipe,
 83			   u8 type, u8 instruction,
 84			   const u8 *payload, size_t payload_len,
 85			   hci_cmd_cb_t cb, void *cb_data,
 86			   unsigned long completion_delay);
 87
 88u8 nfc_hci_pipe2gate(struct nfc_hci_dev *hdev, u8 pipe);
 89
 90void nfc_hci_hcp_message_rx(struct nfc_hci_dev *hdev, u8 pipe, u8 type,
 91			    u8 instruction, struct sk_buff *skb);
 92
 93/* HCP headers */
 94#define NFC_HCI_HCP_PACKET_HEADER_LEN	1
 95#define NFC_HCI_HCP_MESSAGE_HEADER_LEN	1
 96#define NFC_HCI_HCP_HEADER_LEN		2
 97
 98/* HCP types */
 99#define NFC_HCI_HCP_COMMAND	0x00
100#define NFC_HCI_HCP_EVENT	0x01
101#define NFC_HCI_HCP_RESPONSE	0x02
102
103/* Generic commands */
104#define NFC_HCI_ANY_SET_PARAMETER	0x01
105#define NFC_HCI_ANY_GET_PARAMETER	0x02
106#define NFC_HCI_ANY_OPEN_PIPE		0x03
107#define NFC_HCI_ANY_CLOSE_PIPE		0x04
108
109/* Reader RF commands */
110#define NFC_HCI_WR_XCHG_DATA		0x10
111
112/* Admin commands */
113#define NFC_HCI_ADM_CREATE_PIPE			0x10
114#define NFC_HCI_ADM_DELETE_PIPE			0x11
115#define NFC_HCI_ADM_NOTIFY_PIPE_CREATED		0x12
116#define NFC_HCI_ADM_NOTIFY_PIPE_DELETED		0x13
117#define NFC_HCI_ADM_CLEAR_ALL_PIPE		0x14
118#define NFC_HCI_ADM_NOTIFY_ALL_PIPE_CLEARED	0x15
119
120/* Generic responses */
121#define NFC_HCI_ANY_OK				0x00
122#define NFC_HCI_ANY_E_NOT_CONNECTED		0x01
123#define NFC_HCI_ANY_E_CMD_PAR_UNKNOWN		0x02
124#define NFC_HCI_ANY_E_NOK			0x03
125#define NFC_HCI_ANY_E_PIPES_FULL		0x04
126#define NFC_HCI_ANY_E_REG_PAR_UNKNOWN		0x05
127#define NFC_HCI_ANY_E_PIPE_NOT_OPENED		0x06
128#define NFC_HCI_ANY_E_CMD_NOT_SUPPORTED		0x07
129#define NFC_HCI_ANY_E_INHIBITED			0x08
130#define NFC_HCI_ANY_E_TIMEOUT			0x09
131#define NFC_HCI_ANY_E_REG_ACCESS_DENIED		0x0a
132#define NFC_HCI_ANY_E_PIPE_ACCESS_DENIED	0x0b
133
134/* Pipes */
135#define NFC_HCI_INVALID_PIPE	0x80
136#define NFC_HCI_LINK_MGMT_PIPE	0x00
137#define NFC_HCI_ADMIN_PIPE	0x01
138
139#endif /* __LOCAL_HCI_H */