linux/net/nfc/digital.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * NFC Digital Protocol stack
 * Copyright (c) 2013, Intel Corporation.
 */

#ifndef __DIGITAL_H
#define __DIGITAL_H

#include <net/nfc/nfc.h>
#include <net/nfc/digital.h>

#include <linux/crc-ccitt.h>
#include <linux/crc-itu-t.h>

#define PROTOCOL_ERR(req) …

#define DIGITAL_CMD_IN_SEND …
#define DIGITAL_CMD_TG_SEND …
#define DIGITAL_CMD_TG_LISTEN …
#define DIGITAL_CMD_TG_LISTEN_MDAA …
#define DIGITAL_CMD_TG_LISTEN_MD …

#define DIGITAL_MAX_HEADER_LEN …
#define DIGITAL_CRC_LEN …

#define DIGITAL_SENSF_NFCID2_NFC_DEP_B1 …
#define DIGITAL_SENSF_NFCID2_NFC_DEP_B2 …

#define DIGITAL_SENS_RES_NFC_DEP …
#define DIGITAL_SEL_RES_NFC_DEP …
#define DIGITAL_SENSF_FELICA_SC …

#define DIGITAL_DRV_CAPS_IN_CRC(ddev) …
#define DIGITAL_DRV_CAPS_TG_CRC(ddev) …

struct digital_data_exch { … };

struct sk_buff *digital_skb_alloc(struct nfc_digital_dev *ddev,
				  unsigned int len);

int digital_send_cmd(struct nfc_digital_dev *ddev, u8 cmd_type,
		     struct sk_buff *skb, struct digital_tg_mdaa_params *params,
		     u16 timeout, nfc_digital_cmd_complete_t cmd_cb,
		     void *cb_context);

int digital_in_configure_hw(struct nfc_digital_dev *ddev, int type, int param);
static inline int digital_in_send_cmd(struct nfc_digital_dev *ddev,
				      struct sk_buff *skb, u16 timeout,
				      nfc_digital_cmd_complete_t cmd_cb,
				      void *cb_context)
{ … }

void digital_poll_next_tech(struct nfc_digital_dev *ddev);

int digital_in_send_sens_req(struct nfc_digital_dev *ddev, u8 rf_tech);
int digital_in_send_sensb_req(struct nfc_digital_dev *ddev, u8 rf_tech);
int digital_in_send_sensf_req(struct nfc_digital_dev *ddev, u8 rf_tech);
int digital_in_send_iso15693_inv_req(struct nfc_digital_dev *ddev, u8 rf_tech);

int digital_in_iso_dep_pull_sod(struct nfc_digital_dev *ddev,
				struct sk_buff *skb);
int digital_in_iso_dep_push_sod(struct nfc_digital_dev *ddev,
				struct sk_buff *skb);

int digital_target_found(struct nfc_digital_dev *ddev,
			 struct nfc_target *target, u8 protocol);

int digital_in_recv_mifare_res(struct sk_buff *resp);

int digital_in_send_atr_req(struct nfc_digital_dev *ddev,
			    struct nfc_target *target, __u8 comm_mode, __u8 *gb,
			    size_t gb_len);
int digital_in_send_dep_req(struct nfc_digital_dev *ddev,
			    struct nfc_target *target, struct sk_buff *skb,
			    struct digital_data_exch *data_exch);

int digital_tg_configure_hw(struct nfc_digital_dev *ddev, int type, int param);
static inline int digital_tg_send_cmd(struct nfc_digital_dev *ddev,
			struct sk_buff *skb, u16 timeout,
			nfc_digital_cmd_complete_t cmd_cb, void *cb_context)
{ … }

void digital_tg_recv_sens_req(struct nfc_digital_dev *ddev, void *arg,
			      struct sk_buff *resp);

void digital_tg_recv_sensf_req(struct nfc_digital_dev *ddev, void *arg,
			       struct sk_buff *resp);

static inline int digital_tg_listen(struct nfc_digital_dev *ddev, u16 timeout,
				    nfc_digital_cmd_complete_t cb, void *arg)
{ … }

void digital_tg_recv_atr_req(struct nfc_digital_dev *ddev, void *arg,
			     struct sk_buff *resp);

int digital_tg_send_dep_res(struct nfc_digital_dev *ddev, struct sk_buff *skb);

int digital_tg_listen_nfca(struct nfc_digital_dev *ddev, u8 rf_tech);
int digital_tg_listen_nfcf(struct nfc_digital_dev *ddev, u8 rf_tech);
void digital_tg_recv_md_req(struct nfc_digital_dev *ddev, void *arg,
			    struct sk_buff *resp);

crc_func_t;

#define CRC_A_INIT …
#define CRC_B_INIT …
#define CRC_F_INIT …

void digital_skb_add_crc(struct sk_buff *skb, crc_func_t crc_func, u16 init,
			 u8 bitwise_inv, u8 msb_first);

static inline void digital_skb_add_crc_a(struct sk_buff *skb)
{ … }

static inline void digital_skb_add_crc_b(struct sk_buff *skb)
{ … }

static inline void digital_skb_add_crc_f(struct sk_buff *skb)
{ … }

static inline void digital_skb_add_crc_none(struct sk_buff *skb)
{ … }

int digital_skb_check_crc(struct sk_buff *skb, crc_func_t crc_func,
			  u16 crc_init, u8 bitwise_inv, u8 msb_first);

static inline int digital_skb_check_crc_a(struct sk_buff *skb)
{ … }

static inline int digital_skb_check_crc_b(struct sk_buff *skb)
{ … }

static inline int digital_skb_check_crc_f(struct sk_buff *skb)
{ … }

static inline int digital_skb_check_crc_none(struct sk_buff *skb)
{ … }

#endif /* __DIGITAL_H */