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remarkable-linux/include/net/nfc/hci.h
Samuel Ortiz 8115dd5905 NFC: Introduce vendor commands structures 
Together with inline routines to associate a vendor commands
array with an NFC device.

Vendor commands allow vendors to implement their very specific
operations from driver code instead of adding new stack ops
for non NFC generic commands.
Vendors need to select their own unique IDs and use that as a
namespace for defining sub commands.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2015-06-09 01:20:19 +02:00

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/*
* Copyright (C) 2011 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef __NET_HCI_H
#define __NET_HCI_H
#include <linux/skbuff.h>
#include <net/nfc/nfc.h>
struct nfc_hci_dev;
struct nfc_hci_ops {
int (*open) (struct nfc_hci_dev *hdev);
void (*close) (struct nfc_hci_dev *hdev);
int (*load_session) (struct nfc_hci_dev *hdev);
int (*hci_ready) (struct nfc_hci_dev *hdev);
/*
* xmit must always send the complete buffer before
* returning. Returned result must be 0 for success
* or negative for failure.
*/
int (*xmit) (struct nfc_hci_dev *hdev, struct sk_buff *skb);
int (*start_poll) (struct nfc_hci_dev *hdev,
u32 im_protocols, u32 tm_protocols);
void (*stop_poll) (struct nfc_hci_dev *hdev);
int (*dep_link_up)(struct nfc_hci_dev *hdev, struct nfc_target *target,
u8 comm_mode, u8 *gb, size_t gb_len);
int (*dep_link_down)(struct nfc_hci_dev *hdev);
int (*target_from_gate) (struct nfc_hci_dev *hdev, u8 gate,
struct nfc_target *target);
int (*complete_target_discovered) (struct nfc_hci_dev *hdev, u8 gate,
struct nfc_target *target);
int (*im_transceive) (struct nfc_hci_dev *hdev,
struct nfc_target *target, struct sk_buff *skb,
data_exchange_cb_t cb, void *cb_context);
int (*tm_send)(struct nfc_hci_dev *hdev, struct sk_buff *skb);
int (*check_presence)(struct nfc_hci_dev *hdev,
struct nfc_target *target);
int (*event_received)(struct nfc_hci_dev *hdev, u8 pipe, u8 event,
struct sk_buff *skb);
void (*cmd_received)(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd,
struct sk_buff *skb);
int (*fw_download)(struct nfc_hci_dev *hdev, const char *firmware_name);
int (*discover_se)(struct nfc_hci_dev *dev);
int (*enable_se)(struct nfc_hci_dev *dev, u32 se_idx);
int (*disable_se)(struct nfc_hci_dev *dev, u32 se_idx);
int (*se_io)(struct nfc_hci_dev *dev, u32 se_idx,
u8 *apdu, size_t apdu_length,
se_io_cb_t cb, void *cb_context);
};
/* Pipes */
#define NFC_HCI_DO_NOT_CREATE_PIPE 0x81
#define NFC_HCI_INVALID_PIPE 0x80
#define NFC_HCI_INVALID_GATE 0xFF
#define NFC_HCI_INVALID_HOST 0x80
#define NFC_HCI_LINK_MGMT_PIPE 0x00
#define NFC_HCI_ADMIN_PIPE 0x01
struct nfc_hci_gate {
u8 gate;
u8 pipe;
};
struct nfc_hci_pipe {
u8 gate;
u8 dest_host;
};
#define NFC_HCI_MAX_CUSTOM_GATES 50
/*
* According to specification 102 622 chapter 4.4 Pipes,
* the pipe identifier is 7 bits long.
*/
#define NFC_HCI_MAX_PIPES 127
struct nfc_hci_init_data {
u8 gate_count;
struct nfc_hci_gate gates[NFC_HCI_MAX_CUSTOM_GATES];
char session_id[9];
};
typedef int (*xmit) (struct sk_buff *skb, void *cb_data);
#define NFC_HCI_MAX_GATES 256
/*
* These values can be specified by a driver to indicate it requires some
* adaptation of the HCI standard.
*
* NFC_HCI_QUIRK_SHORT_CLEAR - send HCI_ADM_CLEAR_ALL_PIPE cmd with no params
*/
enum {
NFC_HCI_QUIRK_SHORT_CLEAR = 0,
};
struct nfc_hci_dev {
struct nfc_dev *ndev;
u32 max_data_link_payload;
bool shutting_down;
struct mutex msg_tx_mutex;
struct list_head msg_tx_queue;
struct work_struct msg_tx_work;
struct timer_list cmd_timer;
struct hci_msg *cmd_pending_msg;
struct sk_buff_head rx_hcp_frags;
struct work_struct msg_rx_work;
struct sk_buff_head msg_rx_queue;
struct nfc_hci_ops *ops;
struct nfc_llc *llc;
struct nfc_hci_init_data init_data;
void *clientdata;
u8 gate2pipe[NFC_HCI_MAX_GATES];
struct nfc_hci_pipe pipes[NFC_HCI_MAX_PIPES];
u8 sw_romlib;
u8 sw_patch;
u8 sw_flashlib_major;
u8 sw_flashlib_minor;
u8 hw_derivative;
u8 hw_version;
u8 hw_mpw;
u8 hw_software;
u8 hw_bsid;
int async_cb_type;
data_exchange_cb_t async_cb;
void *async_cb_context;
u8 *gb;
size_t gb_len;
unsigned long quirks;
};
/* hci device allocation */
struct nfc_hci_dev *nfc_hci_allocate_device(struct nfc_hci_ops *ops,
struct nfc_hci_init_data *init_data,
unsigned long quirks,
u32 protocols,
const char *llc_name,
int tx_headroom,
int tx_tailroom,
int max_link_payload);
void nfc_hci_free_device(struct nfc_hci_dev *hdev);
int nfc_hci_register_device(struct nfc_hci_dev *hdev);
void nfc_hci_unregister_device(struct nfc_hci_dev *hdev);
void nfc_hci_set_clientdata(struct nfc_hci_dev *hdev, void *clientdata);
void *nfc_hci_get_clientdata(struct nfc_hci_dev *hdev);
static inline int nfc_hci_set_vendor_cmds(struct nfc_hci_dev *hdev,
struct nfc_vendor_cmd *cmds,
int n_cmds)
{
return nfc_set_vendor_cmds(hdev->ndev, cmds, n_cmds);
}
void nfc_hci_driver_failure(struct nfc_hci_dev *hdev, int err);
int nfc_hci_result_to_errno(u8 result);
void nfc_hci_reset_pipes(struct nfc_hci_dev *dev);
void nfc_hci_reset_pipes_per_host(struct nfc_hci_dev *hdev, u8 host);
/* Host IDs */
#define NFC_HCI_HOST_CONTROLLER_ID 0x00
#define NFC_HCI_TERMINAL_HOST_ID 0x01
#define NFC_HCI_UICC_HOST_ID 0x02
/* Host Controller Gates and registry indexes */
#define NFC_HCI_ADMIN_GATE 0x00
#define NFC_HCI_ADMIN_SESSION_IDENTITY 0x01
#define NFC_HCI_ADMIN_MAX_PIPE 0x02
#define NFC_HCI_ADMIN_WHITELIST 0x03
#define NFC_HCI_ADMIN_HOST_LIST 0x04
#define NFC_HCI_LOOPBACK_GATE 0x04
#define NFC_HCI_ID_MGMT_GATE 0x05
#define NFC_HCI_ID_MGMT_VERSION_SW 0x01
#define NFC_HCI_ID_MGMT_VERSION_HW 0x03
#define NFC_HCI_ID_MGMT_VENDOR_NAME 0x04
#define NFC_HCI_ID_MGMT_MODEL_ID 0x05
#define NFC_HCI_ID_MGMT_HCI_VERSION 0x02
#define NFC_HCI_ID_MGMT_GATES_LIST 0x06
#define NFC_HCI_LINK_MGMT_GATE 0x06
#define NFC_HCI_LINK_MGMT_REC_ERROR 0x01
#define NFC_HCI_RF_READER_B_GATE 0x11
#define NFC_HCI_RF_READER_B_PUPI 0x03
#define NFC_HCI_RF_READER_B_APPLICATION_DATA 0x04
#define NFC_HCI_RF_READER_B_AFI 0x02
#define NFC_HCI_RF_READER_B_HIGHER_LAYER_RESPONSE 0x01
#define NFC_HCI_RF_READER_B_HIGHER_LAYER_DATA 0x05
#define NFC_HCI_RF_READER_A_GATE 0x13
#define NFC_HCI_RF_READER_A_UID 0x02
#define NFC_HCI_RF_READER_A_ATQA 0x04
#define NFC_HCI_RF_READER_A_APPLICATION_DATA 0x05
#define NFC_HCI_RF_READER_A_SAK 0x03
#define NFC_HCI_RF_READER_A_FWI_SFGT 0x06
#define NFC_HCI_RF_READER_A_DATARATE_MAX 0x01
#define NFC_HCI_TYPE_A_SEL_PROT(x) (((x) & 0x60) >> 5)
#define NFC_HCI_TYPE_A_SEL_PROT_MIFARE 0
#define NFC_HCI_TYPE_A_SEL_PROT_ISO14443 1
#define NFC_HCI_TYPE_A_SEL_PROT_DEP 2
#define NFC_HCI_TYPE_A_SEL_PROT_ISO14443_DEP 3
/* Generic events */
#define NFC_HCI_EVT_HCI_END_OF_OPERATION 0x01
#define NFC_HCI_EVT_POST_DATA 0x02
#define NFC_HCI_EVT_HOT_PLUG 0x03
/* 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 gates events */
#define NFC_HCI_EVT_READER_REQUESTED 0x10
#define NFC_HCI_EVT_END_OPERATION 0x11
/* Reader Application gate events */
#define NFC_HCI_EVT_TARGET_DISCOVERED 0x10
/* receiving messages from lower layer */
void nfc_hci_resp_received(struct nfc_hci_dev *hdev, u8 result,
struct sk_buff *skb);
void nfc_hci_cmd_received(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd,
struct sk_buff *skb);
void nfc_hci_event_received(struct nfc_hci_dev *hdev, u8 pipe, u8 event,
struct sk_buff *skb);
void nfc_hci_recv_frame(struct nfc_hci_dev *hdev, struct sk_buff *skb);
/* connecting to gates and sending hci instructions */
int nfc_hci_connect_gate(struct nfc_hci_dev *hdev, u8 dest_host, u8 dest_gate,
u8 pipe);
int nfc_hci_disconnect_gate(struct nfc_hci_dev *hdev, u8 gate);
int nfc_hci_disconnect_all_gates(struct nfc_hci_dev *hdev);
int nfc_hci_get_param(struct nfc_hci_dev *hdev, u8 gate, u8 idx,
struct sk_buff **skb);
int nfc_hci_set_param(struct nfc_hci_dev *hdev, u8 gate, u8 idx,
const u8 *param, size_t param_len);
int nfc_hci_send_cmd(struct nfc_hci_dev *hdev, u8 gate, u8 cmd,
const u8 *param, size_t param_len, struct sk_buff **skb);
int nfc_hci_send_cmd_async(struct nfc_hci_dev *hdev, u8 gate, u8 cmd,
const u8 *param, size_t param_len,
data_exchange_cb_t cb, void *cb_context);
int nfc_hci_send_event(struct nfc_hci_dev *hdev, u8 gate, u8 event,
const u8 *param, size_t param_len);
int nfc_hci_target_discovered(struct nfc_hci_dev *hdev, u8 gate);
u32 nfc_hci_sak_to_protocol(u8 sak);
#endif /* __NET_HCI_H */
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