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, see <http://www.gnu.org/licenses/>.
 16 */
 17
 18#ifndef __LOCAL_HCI_H
 19#define __LOCAL_HCI_H
 20
 21#include <net/nfc/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
 38struct hcp_exec_waiter {
 39	wait_queue_head_t *wq;
 40	bool exec_complete;
 41	int exec_result;
 42	struct sk_buff *result_skb;
 43};
 44
 45struct hci_msg {
 46	struct list_head msg_l;
 47	struct sk_buff_head msg_frags;
 48	bool wait_response;
 49	data_exchange_cb_t cb;
 50	void *cb_context;
 51	unsigned long completion_delay;
 52};
 53
 54struct hci_create_pipe_params {
 55	u8 src_gate;
 56	u8 dest_host;
 57	u8 dest_gate;
 58} __packed;
 59
 60struct hci_create_pipe_resp {
 61	u8 src_host;
 62	u8 src_gate;
 63	u8 dest_host;
 64	u8 dest_gate;
 65	u8 pipe;
 66} __packed;
 67
 68#define NFC_HCI_FRAGMENT	0x7f
 69
 70#define HCP_HEADER(type, instr) ((((type) & 0x03) << 6) | ((instr) & 0x3f))
 71#define HCP_MSG_GET_TYPE(header) ((header & 0xc0) >> 6)
 72#define HCP_MSG_GET_CMD(header) (header & 0x3f)
 73
 74int nfc_hci_hcp_message_tx(struct nfc_hci_dev *hdev, u8 pipe,
 75			   u8 type, u8 instruction,
 76			   const u8 *payload, size_t payload_len,
 77			   data_exchange_cb_t cb, void *cb_context,
 78			   unsigned long completion_delay);
 79
 80u8 nfc_hci_pipe2gate(struct nfc_hci_dev *hdev, u8 pipe);
 81
 82void nfc_hci_hcp_message_rx(struct nfc_hci_dev *hdev, u8 pipe, u8 type,
 83			    u8 instruction, struct sk_buff *skb);
 84
 85/* HCP headers */
 86#define NFC_HCI_HCP_PACKET_HEADER_LEN	1
 87#define NFC_HCI_HCP_MESSAGE_HEADER_LEN	1
 88#define NFC_HCI_HCP_HEADER_LEN		2
 89
 90/* HCP types */
 91#define NFC_HCI_HCP_COMMAND	0x00
 92#define NFC_HCI_HCP_EVENT	0x01
 93#define NFC_HCI_HCP_RESPONSE	0x02
 94
 95/* Generic commands */
 96#define NFC_HCI_ANY_SET_PARAMETER	0x01
 97#define NFC_HCI_ANY_GET_PARAMETER	0x02
 98#define NFC_HCI_ANY_OPEN_PIPE		0x03
 99#define NFC_HCI_ANY_CLOSE_PIPE		0x04
100
101/* Reader RF commands */
102#define NFC_HCI_WR_XCHG_DATA		0x10
103
104/* Admin commands */
105#define NFC_HCI_ADM_CREATE_PIPE			0x10
106#define NFC_HCI_ADM_DELETE_PIPE			0x11
107#define NFC_HCI_ADM_NOTIFY_PIPE_CREATED		0x12
108#define NFC_HCI_ADM_NOTIFY_PIPE_DELETED		0x13
109#define NFC_HCI_ADM_CLEAR_ALL_PIPE		0x14
110#define NFC_HCI_ADM_NOTIFY_ALL_PIPE_CLEARED	0x15
111
112/* Generic responses */
113#define NFC_HCI_ANY_OK				0x00
114#define NFC_HCI_ANY_E_NOT_CONNECTED		0x01
115#define NFC_HCI_ANY_E_CMD_PAR_UNKNOWN		0x02
116#define NFC_HCI_ANY_E_NOK			0x03
117#define NFC_HCI_ANY_E_PIPES_FULL		0x04
118#define NFC_HCI_ANY_E_REG_PAR_UNKNOWN		0x05
119#define NFC_HCI_ANY_E_PIPE_NOT_OPENED		0x06
120#define NFC_HCI_ANY_E_CMD_NOT_SUPPORTED		0x07
121#define NFC_HCI_ANY_E_INHIBITED			0x08
122#define NFC_HCI_ANY_E_TIMEOUT			0x09
123#define NFC_HCI_ANY_E_REG_ACCESS_DENIED		0x0a
124#define NFC_HCI_ANY_E_PIPE_ACCESS_DENIED	0x0b
125
126#endif /* __LOCAL_HCI_H */