NFC: HCI support
This is an implementation of ETSI TS 102 622 specification. Many NFC chipsets use HCI as the host <-> target protocol on top of a serial link like i2c. Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Eric Lapuyade
committed by
John W. Linville
John W. Linville
parent
e1da0efa2e
commit
8b8d2e08bf
139
net/nfc/hci/hci.h
Normal file
139
net/nfc/hci/hci.h
Normal file
@@ -0,0 +1,139 @@
|
||||
/*
|
||||
* Copyright (C) 2012 Intel Corporation. All rights reserved.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the
|
||||
* Free Software Foundation, Inc.,
|
||||
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
||||
*/
|
||||
|
||||
#ifndef __LOCAL_HCI_H
|
||||
#define __LOCAL_HCI_H
|
||||
|
||||
struct gate_pipe_map {
|
||||
u8 gate;
|
||||
u8 pipe;
|
||||
};
|
||||
|
||||
struct hcp_message {
|
||||
u8 header; /* type -cmd,evt,rsp- + instruction */
|
||||
u8 data[];
|
||||
} __packed;
|
||||
|
||||
struct hcp_packet {
|
||||
u8 header; /* cbit+pipe */
|
||||
struct hcp_message message;
|
||||
} __packed;
|
||||
|
||||
/*
|
||||
* HCI command execution completion callback.
|
||||
* result will be one of the HCI response codes.
|
||||
* skb contains the response data and must be disposed.
|
||||
*/
|
||||
typedef void (*hci_cmd_cb_t) (struct nfc_hci_dev *hdev, u8 result,
|
||||
struct sk_buff *skb, void *cb_data);
|
||||
|
||||
struct hcp_exec_waiter {
|
||||
wait_queue_head_t *wq;
|
||||
bool exec_complete;
|
||||
int exec_result;
|
||||
struct sk_buff *result_skb;
|
||||
};
|
||||
|
||||
struct hci_msg {
|
||||
struct list_head msg_l;
|
||||
struct sk_buff_head msg_frags;
|
||||
bool wait_response;
|
||||
hci_cmd_cb_t cb;
|
||||
void *cb_context;
|
||||
unsigned long completion_delay;
|
||||
};
|
||||
|
||||
struct hci_create_pipe_params {
|
||||
u8 src_gate;
|
||||
u8 dest_host;
|
||||
u8 dest_gate;
|
||||
} __packed;
|
||||
|
||||
struct hci_create_pipe_resp {
|
||||
u8 src_host;
|
||||
u8 src_gate;
|
||||
u8 dest_host;
|
||||
u8 dest_gate;
|
||||
u8 pipe;
|
||||
} __packed;
|
||||
|
||||
#define NFC_HCI_FRAGMENT 0x7f
|
||||
|
||||
#define HCP_HEADER(type, instr) ((((type) & 0x03) << 6) | ((instr) & 0x3f))
|
||||
#define HCP_MSG_GET_TYPE(header) ((header & 0xc0) >> 6)
|
||||
#define HCP_MSG_GET_CMD(header) (header & 0x3f)
|
||||
|
||||
int nfc_hci_hcp_message_tx(struct nfc_hci_dev *hdev, u8 pipe,
|
||||
u8 type, u8 instruction,
|
||||
const u8 *payload, size_t payload_len,
|
||||
hci_cmd_cb_t cb, void *cb_data,
|
||||
unsigned long completion_delay);
|
||||
|
||||
u8 nfc_hci_pipe2gate(struct nfc_hci_dev *hdev, u8 pipe);
|
||||
|
||||
void nfc_hci_hcp_message_rx(struct nfc_hci_dev *hdev, u8 pipe, u8 type,
|
||||
u8 instruction, struct sk_buff *skb);
|
||||
|
||||
/* HCP headers */
|
||||
#define NFC_HCI_HCP_PACKET_HEADER_LEN 1
|
||||
#define NFC_HCI_HCP_MESSAGE_HEADER_LEN 1
|
||||
#define NFC_HCI_HCP_HEADER_LEN 2
|
||||
|
||||
/* HCP types */
|
||||
#define NFC_HCI_HCP_COMMAND 0x00
|
||||
#define NFC_HCI_HCP_EVENT 0x01
|
||||
#define NFC_HCI_HCP_RESPONSE 0x02
|
||||
|
||||
/* Generic commands */
|
||||
#define NFC_HCI_ANY_SET_PARAMETER 0x01
|
||||
#define NFC_HCI_ANY_GET_PARAMETER 0x02
|
||||
#define NFC_HCI_ANY_OPEN_PIPE 0x03
|
||||
#define NFC_HCI_ANY_CLOSE_PIPE 0x04
|
||||
|
||||
/* Reader RF commands */
|
||||
#define NFC_HCI_WR_XCHG_DATA 0x10
|
||||
|
||||
/* Admin commands */
|
||||
#define NFC_HCI_ADM_CREATE_PIPE 0x10
|
||||
#define NFC_HCI_ADM_DELETE_PIPE 0x11
|
||||
#define NFC_HCI_ADM_NOTIFY_PIPE_CREATED 0x12
|
||||
#define NFC_HCI_ADM_NOTIFY_PIPE_DELETED 0x13
|
||||
#define NFC_HCI_ADM_CLEAR_ALL_PIPE 0x14
|
||||
#define NFC_HCI_ADM_NOTIFY_ALL_PIPE_CLEARED 0x15
|
||||
|
||||
/* Generic responses */
|
||||
#define NFC_HCI_ANY_OK 0x00
|
||||
#define NFC_HCI_ANY_E_NOT_CONNECTED 0x01
|
||||
#define NFC_HCI_ANY_E_CMD_PAR_UNKNOWN 0x02
|
||||
#define NFC_HCI_ANY_E_NOK 0x03
|
||||
#define NFC_HCI_ANY_E_PIPES_FULL 0x04
|
||||
#define NFC_HCI_ANY_E_REG_PAR_UNKNOWN 0x05
|
||||
#define NFC_HCI_ANY_E_PIPE_NOT_OPENED 0x06
|
||||
#define NFC_HCI_ANY_E_CMD_NOT_SUPPORTED 0x07
|
||||
#define NFC_HCI_ANY_E_INHIBITED 0x08
|
||||
#define NFC_HCI_ANY_E_TIMEOUT 0x09
|
||||
#define NFC_HCI_ANY_E_REG_ACCESS_DENIED 0x0a
|
||||
#define NFC_HCI_ANY_E_PIPE_ACCESS_DENIED 0x0b
|
||||
|
||||
/* Pipes */
|
||||
#define NFC_HCI_INVALID_PIPE 0x80
|
||||
#define NFC_HCI_LINK_MGMT_PIPE 0x00
|
||||
#define NFC_HCI_ADMIN_PIPE 0x01
|
||||
|
||||
#endif /* __LOCAL_HCI_H */
|
||||
Reference in New Issue
Block a user