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171 lines
5.2 KiB
171 lines
5.2 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* NFC Digital Protocol stack |
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* Copyright (c) 2013, Intel Corporation. |
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*/ |
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#ifndef __DIGITAL_H |
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#define __DIGITAL_H |
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#include <net/nfc/nfc.h> |
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#include <net/nfc/digital.h> |
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#include <linux/crc-ccitt.h> |
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#include <linux/crc-itu-t.h> |
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#define PROTOCOL_ERR(req) pr_err("%d: NFC Digital Protocol error: %s\n", \ |
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__LINE__, req) |
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#define DIGITAL_CMD_IN_SEND 0 |
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#define DIGITAL_CMD_TG_SEND 1 |
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#define DIGITAL_CMD_TG_LISTEN 2 |
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#define DIGITAL_CMD_TG_LISTEN_MDAA 3 |
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#define DIGITAL_CMD_TG_LISTEN_MD 4 |
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#define DIGITAL_MAX_HEADER_LEN 7 |
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#define DIGITAL_CRC_LEN 2 |
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#define DIGITAL_SENSF_NFCID2_NFC_DEP_B1 0x01 |
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#define DIGITAL_SENSF_NFCID2_NFC_DEP_B2 0xFE |
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#define DIGITAL_SENS_RES_NFC_DEP 0x0100 |
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#define DIGITAL_SEL_RES_NFC_DEP 0x40 |
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#define DIGITAL_SENSF_FELICA_SC 0xFFFF |
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#define DIGITAL_DRV_CAPS_IN_CRC(ddev) \ |
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((ddev)->driver_capabilities & NFC_DIGITAL_DRV_CAPS_IN_CRC) |
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#define DIGITAL_DRV_CAPS_TG_CRC(ddev) \ |
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((ddev)->driver_capabilities & NFC_DIGITAL_DRV_CAPS_TG_CRC) |
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struct digital_data_exch { |
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data_exchange_cb_t cb; |
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void *cb_context; |
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}; |
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struct sk_buff *digital_skb_alloc(struct nfc_digital_dev *ddev, |
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unsigned int len); |
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int digital_send_cmd(struct nfc_digital_dev *ddev, u8 cmd_type, |
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struct sk_buff *skb, struct digital_tg_mdaa_params *params, |
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u16 timeout, nfc_digital_cmd_complete_t cmd_cb, |
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void *cb_context); |
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int digital_in_configure_hw(struct nfc_digital_dev *ddev, int type, int param); |
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static inline int digital_in_send_cmd(struct nfc_digital_dev *ddev, |
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struct sk_buff *skb, u16 timeout, |
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nfc_digital_cmd_complete_t cmd_cb, |
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void *cb_context) |
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{ |
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return digital_send_cmd(ddev, DIGITAL_CMD_IN_SEND, skb, NULL, timeout, |
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cmd_cb, cb_context); |
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} |
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void digital_poll_next_tech(struct nfc_digital_dev *ddev); |
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int digital_in_send_sens_req(struct nfc_digital_dev *ddev, u8 rf_tech); |
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int digital_in_send_sensb_req(struct nfc_digital_dev *ddev, u8 rf_tech); |
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int digital_in_send_sensf_req(struct nfc_digital_dev *ddev, u8 rf_tech); |
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int digital_in_send_iso15693_inv_req(struct nfc_digital_dev *ddev, u8 rf_tech); |
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int digital_in_iso_dep_pull_sod(struct nfc_digital_dev *ddev, |
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struct sk_buff *skb); |
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int digital_in_iso_dep_push_sod(struct nfc_digital_dev *ddev, |
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struct sk_buff *skb); |
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int digital_target_found(struct nfc_digital_dev *ddev, |
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struct nfc_target *target, u8 protocol); |
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int digital_in_recv_mifare_res(struct sk_buff *resp); |
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int digital_in_send_atr_req(struct nfc_digital_dev *ddev, |
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struct nfc_target *target, __u8 comm_mode, __u8 *gb, |
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size_t gb_len); |
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int digital_in_send_dep_req(struct nfc_digital_dev *ddev, |
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struct nfc_target *target, struct sk_buff *skb, |
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struct digital_data_exch *data_exch); |
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int digital_tg_configure_hw(struct nfc_digital_dev *ddev, int type, int param); |
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static inline int digital_tg_send_cmd(struct nfc_digital_dev *ddev, |
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struct sk_buff *skb, u16 timeout, |
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nfc_digital_cmd_complete_t cmd_cb, void *cb_context) |
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{ |
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return digital_send_cmd(ddev, DIGITAL_CMD_TG_SEND, skb, NULL, timeout, |
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cmd_cb, cb_context); |
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} |
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void digital_tg_recv_sens_req(struct nfc_digital_dev *ddev, void *arg, |
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struct sk_buff *resp); |
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void digital_tg_recv_sensf_req(struct nfc_digital_dev *ddev, void *arg, |
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struct sk_buff *resp); |
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static inline int digital_tg_listen(struct nfc_digital_dev *ddev, u16 timeout, |
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nfc_digital_cmd_complete_t cb, void *arg) |
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{ |
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return digital_send_cmd(ddev, DIGITAL_CMD_TG_LISTEN, NULL, NULL, |
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timeout, cb, arg); |
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} |
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void digital_tg_recv_atr_req(struct nfc_digital_dev *ddev, void *arg, |
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struct sk_buff *resp); |
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int digital_tg_send_dep_res(struct nfc_digital_dev *ddev, struct sk_buff *skb); |
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int digital_tg_listen_nfca(struct nfc_digital_dev *ddev, u8 rf_tech); |
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int digital_tg_listen_nfcf(struct nfc_digital_dev *ddev, u8 rf_tech); |
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void digital_tg_recv_md_req(struct nfc_digital_dev *ddev, void *arg, |
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struct sk_buff *resp); |
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typedef u16 (*crc_func_t)(u16, const u8 *, size_t); |
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#define CRC_A_INIT 0x6363 |
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#define CRC_B_INIT 0xFFFF |
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#define CRC_F_INIT 0x0000 |
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void digital_skb_add_crc(struct sk_buff *skb, crc_func_t crc_func, u16 init, |
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u8 bitwise_inv, u8 msb_first); |
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static inline void digital_skb_add_crc_a(struct sk_buff *skb) |
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{ |
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digital_skb_add_crc(skb, crc_ccitt, CRC_A_INIT, 0, 0); |
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} |
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static inline void digital_skb_add_crc_b(struct sk_buff *skb) |
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{ |
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digital_skb_add_crc(skb, crc_ccitt, CRC_B_INIT, 1, 0); |
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} |
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static inline void digital_skb_add_crc_f(struct sk_buff *skb) |
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{ |
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digital_skb_add_crc(skb, crc_itu_t, CRC_F_INIT, 0, 1); |
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} |
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static inline void digital_skb_add_crc_none(struct sk_buff *skb) |
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{ |
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return; |
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} |
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int digital_skb_check_crc(struct sk_buff *skb, crc_func_t crc_func, |
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u16 crc_init, u8 bitwise_inv, u8 msb_first); |
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static inline int digital_skb_check_crc_a(struct sk_buff *skb) |
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{ |
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return digital_skb_check_crc(skb, crc_ccitt, CRC_A_INIT, 0, 0); |
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} |
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static inline int digital_skb_check_crc_b(struct sk_buff *skb) |
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{ |
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return digital_skb_check_crc(skb, crc_ccitt, CRC_B_INIT, 1, 0); |
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} |
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static inline int digital_skb_check_crc_f(struct sk_buff *skb) |
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{ |
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return digital_skb_check_crc(skb, crc_itu_t, CRC_F_INIT, 0, 1); |
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} |
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static inline int digital_skb_check_crc_none(struct sk_buff *skb) |
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{ |
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return 0; |
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} |
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#endif /* __DIGITAL_H */
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