// SPDX-License-Identifier: GPL-2.0-only /* * HCI based Driver for Inside Secure microread NFC Chip * * Copyright (C) 2013 Intel Corporation. All rights reserved. */ #define pr_fmt(fmt) … #include <linux/module.h> #include <linux/delay.h> #include <linux/slab.h> #include <linux/crc-ccitt.h> #include <linux/nfc.h> #include <net/nfc/nfc.h> #include <net/nfc/hci.h> #include "microread.h" /* Proprietary gates, events, commands and registers */ /* Admin */ #define MICROREAD_GATE_ID_ADM … #define MICROREAD_GATE_ID_MGT … #define MICROREAD_GATE_ID_OS … #define MICROREAD_GATE_ID_TESTRF … #define MICROREAD_GATE_ID_LOOPBACK … #define MICROREAD_GATE_ID_IDT … #define MICROREAD_GATE_ID_LMS … /* Reader */ #define MICROREAD_GATE_ID_MREAD_GEN … #define MICROREAD_GATE_ID_MREAD_ISO_B … #define MICROREAD_GATE_ID_MREAD_NFC_T1 … #define MICROREAD_GATE_ID_MREAD_ISO_A … #define MICROREAD_GATE_ID_MREAD_NFC_T3 … #define MICROREAD_GATE_ID_MREAD_ISO_15_3 … #define MICROREAD_GATE_ID_MREAD_ISO_15_2 … #define MICROREAD_GATE_ID_MREAD_ISO_B_3 … #define MICROREAD_GATE_ID_MREAD_BPRIME … #define MICROREAD_GATE_ID_MREAD_ISO_A_3 … /* Card */ #define MICROREAD_GATE_ID_MCARD_GEN … #define MICROREAD_GATE_ID_MCARD_ISO_B … #define MICROREAD_GATE_ID_MCARD_BPRIME … #define MICROREAD_GATE_ID_MCARD_ISO_A … #define MICROREAD_GATE_ID_MCARD_NFC_T3 … #define MICROREAD_GATE_ID_MCARD_ISO_15_3 … #define MICROREAD_GATE_ID_MCARD_ISO_15_2 … #define MICROREAD_GATE_ID_MCARD_ISO_B_2 … #define MICROREAD_GATE_ID_MCARD_ISO_CUSTOM … #define MICROREAD_GATE_ID_SECURE_ELEMENT … /* P2P */ #define MICROREAD_GATE_ID_P2P_GEN … #define MICROREAD_GATE_ID_P2P_TARGET … #define MICROREAD_PAR_P2P_TARGET_MODE … #define MICROREAD_PAR_P2P_TARGET_GT … #define MICROREAD_GATE_ID_P2P_INITIATOR … #define MICROREAD_PAR_P2P_INITIATOR_GI … #define MICROREAD_PAR_P2P_INITIATOR_GT … /* Those pipes are created/opened by default in the chip */ #define MICROREAD_PIPE_ID_LMS … #define MICROREAD_PIPE_ID_ADMIN … #define MICROREAD_PIPE_ID_MGT … #define MICROREAD_PIPE_ID_OS … #define MICROREAD_PIPE_ID_HDS_LOOPBACK … #define MICROREAD_PIPE_ID_HDS_IDT … #define MICROREAD_PIPE_ID_HDS_MCARD_ISO_B … #define MICROREAD_PIPE_ID_HDS_MCARD_ISO_BPRIME … #define MICROREAD_PIPE_ID_HDS_MCARD_ISO_A … #define MICROREAD_PIPE_ID_HDS_MCARD_ISO_15_3 … #define MICROREAD_PIPE_ID_HDS_MCARD_ISO_15_2 … #define MICROREAD_PIPE_ID_HDS_MCARD_NFC_T3 … #define MICROREAD_PIPE_ID_HDS_MCARD_ISO_B_2 … #define MICROREAD_PIPE_ID_HDS_MCARD_CUSTOM … #define MICROREAD_PIPE_ID_HDS_MREAD_ISO_B … #define MICROREAD_PIPE_ID_HDS_MREAD_NFC_T1 … #define MICROREAD_PIPE_ID_HDS_MREAD_ISO_A … #define MICROREAD_PIPE_ID_HDS_MREAD_ISO_15_3 … #define MICROREAD_PIPE_ID_HDS_MREAD_ISO_15_2 … #define MICROREAD_PIPE_ID_HDS_MREAD_NFC_T3 … #define MICROREAD_PIPE_ID_HDS_MREAD_ISO_B_3 … #define MICROREAD_PIPE_ID_HDS_MREAD_BPRIME … #define MICROREAD_PIPE_ID_HDS_MREAD_ISO_A_3 … #define MICROREAD_PIPE_ID_HDS_MREAD_GEN … #define MICROREAD_PIPE_ID_HDS_STACKED_ELEMENT … #define MICROREAD_PIPE_ID_HDS_INSTANCES … #define MICROREAD_PIPE_ID_HDS_TESTRF … #define MICROREAD_PIPE_ID_HDS_P2P_TARGET … #define MICROREAD_PIPE_ID_HDS_P2P_INITIATOR … /* Events */ #define MICROREAD_EVT_MREAD_DISCOVERY_OCCURED … #define MICROREAD_EVT_MREAD_CARD_FOUND … #define MICROREAD_EMCF_A_ATQA … #define MICROREAD_EMCF_A_SAK … #define MICROREAD_EMCF_A_LEN … #define MICROREAD_EMCF_A_UID … #define MICROREAD_EMCF_A3_ATQA … #define MICROREAD_EMCF_A3_SAK … #define MICROREAD_EMCF_A3_LEN … #define MICROREAD_EMCF_A3_UID … #define MICROREAD_EMCF_B_UID … #define MICROREAD_EMCF_T1_ATQA … #define MICROREAD_EMCF_T1_UID … #define MICROREAD_EMCF_T3_UID … #define MICROREAD_EVT_MREAD_DISCOVERY_START … #define MICROREAD_EVT_MREAD_DISCOVERY_START_SOME … #define MICROREAD_EVT_MREAD_DISCOVERY_STOP … #define MICROREAD_EVT_MREAD_SIM_REQUESTS … #define MICROREAD_EVT_MCARD_EXCHANGE … #define MICROREAD_EVT_P2P_INITIATOR_EXCHANGE_TO_RF … #define MICROREAD_EVT_P2P_INITIATOR_EXCHANGE_FROM_RF … #define MICROREAD_EVT_MCARD_FIELD_ON … #define MICROREAD_EVT_P2P_TARGET_ACTIVATED … #define MICROREAD_EVT_P2P_TARGET_DEACTIVATED … #define MICROREAD_EVT_MCARD_FIELD_OFF … /* Commands */ #define MICROREAD_CMD_MREAD_EXCHANGE … #define MICROREAD_CMD_MREAD_SUBSCRIBE … /* Hosts IDs */ #define MICROREAD_ELT_ID_HDS … #define MICROREAD_ELT_ID_SIM … #define MICROREAD_ELT_ID_SE1 … #define MICROREAD_ELT_ID_SE2 … #define MICROREAD_ELT_ID_SE3 … static const struct nfc_hci_gate microread_gates[] = …; /* Largest headroom needed for outgoing custom commands */ #define MICROREAD_CMDS_HEADROOM … #define MICROREAD_CMD_TAILROOM … struct microread_info { … }; static int microread_open(struct nfc_hci_dev *hdev) { … } static void microread_close(struct nfc_hci_dev *hdev) { … } static int microread_hci_ready(struct nfc_hci_dev *hdev) { … } static int microread_xmit(struct nfc_hci_dev *hdev, struct sk_buff *skb) { … } static int microread_start_poll(struct nfc_hci_dev *hdev, u32 im_protocols, u32 tm_protocols) { … } static int microread_dep_link_up(struct nfc_hci_dev *hdev, struct nfc_target *target, u8 comm_mode, u8 *gb, size_t gb_len) { … } static int microread_dep_link_down(struct nfc_hci_dev *hdev) { … } static int microread_target_from_gate(struct nfc_hci_dev *hdev, u8 gate, struct nfc_target *target) { … } static int microread_complete_target_discovered(struct nfc_hci_dev *hdev, u8 gate, struct nfc_target *target) { … } #define MICROREAD_CB_TYPE_READER_ALL … static void microread_im_transceive_cb(void *context, struct sk_buff *skb, int err) { … } /* * Returns: * <= 0: driver handled the data exchange * 1: driver doesn't especially handle, please do standard processing */ static int microread_im_transceive(struct nfc_hci_dev *hdev, struct nfc_target *target, struct sk_buff *skb, data_exchange_cb_t cb, void *cb_context) { … } static int microread_tm_send(struct nfc_hci_dev *hdev, struct sk_buff *skb) { … } static void microread_target_discovered(struct nfc_hci_dev *hdev, u8 gate, struct sk_buff *skb) { … } static int microread_event_received(struct nfc_hci_dev *hdev, u8 pipe, u8 event, struct sk_buff *skb) { … } static const struct nfc_hci_ops microread_hci_ops = …; int microread_probe(void *phy_id, const struct nfc_phy_ops *phy_ops, const char *llc_name, int phy_headroom, int phy_tailroom, int phy_payload, struct nfc_hci_dev **hdev) { … } EXPORT_SYMBOL(…); void microread_remove(struct nfc_hci_dev *hdev) { … } EXPORT_SYMBOL(…); MODULE_LICENSE(…) …; MODULE_DESCRIPTION(…);
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