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-rw-r--r--include/net/nfc/digital.h265
-rw-r--r--include/net/nfc/hci.h275
-rw-r--r--include/net/nfc/llc.h37
-rw-r--r--include/net/nfc/nci.h561
-rw-r--r--include/net/nfc/nci_core.h465
-rw-r--r--include/net/nfc/nfc.h352
6 files changed, 1955 insertions, 0 deletions
diff --git a/include/net/nfc/digital.h b/include/net/nfc/digital.h
new file mode 100644
index 0000000000..bb3e8fdc06
--- /dev/null
+++ b/include/net/nfc/digital.h
@@ -0,0 +1,265 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * NFC Digital Protocol stack
+ * Copyright (c) 2013, Intel Corporation.
+ */
+
+#ifndef __NFC_DIGITAL_H
+#define __NFC_DIGITAL_H
+
+#include <linux/skbuff.h>
+#include <net/nfc/nfc.h>
+
+/**
+ * Configuration types for in_configure_hw and tg_configure_hw.
+ */
+enum {
+ NFC_DIGITAL_CONFIG_RF_TECH = 0,
+ NFC_DIGITAL_CONFIG_FRAMING,
+};
+
+/**
+ * RF technology values passed as param argument to in_configure_hw and
+ * tg_configure_hw for NFC_DIGITAL_CONFIG_RF_TECH configuration type.
+ */
+enum {
+ NFC_DIGITAL_RF_TECH_106A = 0,
+ NFC_DIGITAL_RF_TECH_212F,
+ NFC_DIGITAL_RF_TECH_424F,
+ NFC_DIGITAL_RF_TECH_ISO15693,
+ NFC_DIGITAL_RF_TECH_106B,
+
+ NFC_DIGITAL_RF_TECH_LAST,
+};
+
+/**
+ * Framing configuration passed as param argument to in_configure_hw and
+ * tg_configure_hw for NFC_DIGITAL_CONFIG_FRAMING configuration type.
+ */
+enum {
+ NFC_DIGITAL_FRAMING_NFCA_SHORT = 0,
+ NFC_DIGITAL_FRAMING_NFCA_STANDARD,
+ NFC_DIGITAL_FRAMING_NFCA_STANDARD_WITH_CRC_A,
+ NFC_DIGITAL_FRAMING_NFCA_ANTICOL_COMPLETE,
+
+ NFC_DIGITAL_FRAMING_NFCA_T1T,
+ NFC_DIGITAL_FRAMING_NFCA_T2T,
+ NFC_DIGITAL_FRAMING_NFCA_T4T,
+ NFC_DIGITAL_FRAMING_NFCA_NFC_DEP,
+
+ NFC_DIGITAL_FRAMING_NFCF,
+ NFC_DIGITAL_FRAMING_NFCF_T3T,
+ NFC_DIGITAL_FRAMING_NFCF_NFC_DEP,
+ NFC_DIGITAL_FRAMING_NFC_DEP_ACTIVATED,
+
+ NFC_DIGITAL_FRAMING_ISO15693_INVENTORY,
+ NFC_DIGITAL_FRAMING_ISO15693_T5T,
+
+ NFC_DIGITAL_FRAMING_NFCB,
+ NFC_DIGITAL_FRAMING_NFCB_T4T,
+
+ NFC_DIGITAL_FRAMING_LAST,
+};
+
+#define DIGITAL_MDAA_NFCID1_SIZE 3
+
+struct digital_tg_mdaa_params {
+ u16 sens_res;
+ u8 nfcid1[DIGITAL_MDAA_NFCID1_SIZE];
+ u8 sel_res;
+
+ u8 nfcid2[NFC_NFCID2_MAXSIZE];
+ u16 sc;
+};
+
+struct nfc_digital_dev;
+
+/**
+ * nfc_digital_cmd_complete_t - Definition of command result callback
+ *
+ * @ddev: nfc_digital_device ref
+ * @arg: user data
+ * @resp: response data
+ *
+ * resp pointer can be an error code and will be checked with IS_ERR() macro.
+ * The callback is responsible for freeing resp sk_buff.
+ */
+typedef void (*nfc_digital_cmd_complete_t)(struct nfc_digital_dev *ddev,
+ void *arg, struct sk_buff *resp);
+
+/**
+ * Device side NFC Digital operations
+ *
+ * Initiator mode:
+ * @in_configure_hw: Hardware configuration for RF technology and communication
+ * framing in initiator mode. This is a synchronous function.
+ * @in_send_cmd: Initiator mode data exchange using RF technology and framing
+ * previously set with in_configure_hw. The peer response is returned
+ * through callback cb. If an io error occurs or the peer didn't reply
+ * within the specified timeout (ms), the error code is passed back through
+ * the resp pointer. This is an asynchronous function.
+ *
+ * Target mode: Only NFC-DEP protocol is supported in target mode.
+ * @tg_configure_hw: Hardware configuration for RF technology and communication
+ * framing in target mode. This is a synchronous function.
+ * @tg_send_cmd: Target mode data exchange using RF technology and framing
+ * previously set with tg_configure_hw. The peer next command is returned
+ * through callback cb. If an io error occurs or the peer didn't reply
+ * within the specified timeout (ms), the error code is passed back through
+ * the resp pointer. This is an asynchronous function.
+ * @tg_listen: Put the device in listen mode waiting for data from the peer
+ * device. This is an asynchronous function.
+ * @tg_listen_mdaa: If supported, put the device in automatic listen mode with
+ * mode detection and automatic anti-collision. In this mode, the device
+ * automatically detects the RF technology and executes the anti-collision
+ * detection using the command responses specified in mdaa_params. The
+ * mdaa_params structure contains SENS_RES, NFCID1, and SEL_RES for 106A RF
+ * tech. NFCID2 and system code (sc) for 212F and 424F. The driver returns
+ * the NFC-DEP ATR_REQ command through cb. The digital stack deducts the RF
+ * tech by analyzing the SoD of the frame containing the ATR_REQ command.
+ * This is an asynchronous function.
+ * @tg_listen_md: If supported, put the device in automatic listen mode with
+ * mode detection but without automatic anti-collision. In this mode, the
+ * device automatically detects the RF technology. What the actual
+ * RF technology is can be retrieved by calling @tg_get_rf_tech.
+ * The digital stack will then perform the appropriate anti-collision
+ * sequence. This is an asynchronous function.
+ * @tg_get_rf_tech: Required when @tg_listen_md is supported, unused otherwise.
+ * Return the RF Technology that was detected by the @tg_listen_md call.
+ * This is a synchronous function.
+ *
+ * @switch_rf: Turns device radio on or off. The stack does not call explicitly
+ * switch_rf to turn the radio on. A call to in|tg_configure_hw must turn
+ * the device radio on.
+ * @abort_cmd: Discard the last sent command.
+ *
+ * Notes: Asynchronous functions have a timeout parameter. It is the driver
+ * responsibility to call the digital stack back through the
+ * nfc_digital_cmd_complete_t callback when no RF respsonse has been
+ * received within the specified time (in milliseconds). In that case the
+ * driver must set the resp sk_buff to ERR_PTR(-ETIMEDOUT).
+ * Since the digital stack serializes commands to be sent, it's mandatory
+ * for the driver to handle the timeout correctly. Otherwise the stack
+ * would not be able to send new commands, waiting for the reply of the
+ * current one.
+ */
+struct nfc_digital_ops {
+ int (*in_configure_hw)(struct nfc_digital_dev *ddev, int type,
+ int param);
+ int (*in_send_cmd)(struct nfc_digital_dev *ddev, struct sk_buff *skb,
+ u16 timeout, nfc_digital_cmd_complete_t cb,
+ void *arg);
+
+ int (*tg_configure_hw)(struct nfc_digital_dev *ddev, int type,
+ int param);
+ int (*tg_send_cmd)(struct nfc_digital_dev *ddev, struct sk_buff *skb,
+ u16 timeout, nfc_digital_cmd_complete_t cb,
+ void *arg);
+ int (*tg_listen)(struct nfc_digital_dev *ddev, u16 timeout,
+ nfc_digital_cmd_complete_t cb, void *arg);
+ int (*tg_listen_mdaa)(struct nfc_digital_dev *ddev,
+ struct digital_tg_mdaa_params *mdaa_params,
+ u16 timeout, nfc_digital_cmd_complete_t cb,
+ void *arg);
+ int (*tg_listen_md)(struct nfc_digital_dev *ddev, u16 timeout,
+ nfc_digital_cmd_complete_t cb, void *arg);
+ int (*tg_get_rf_tech)(struct nfc_digital_dev *ddev, u8 *rf_tech);
+
+ int (*switch_rf)(struct nfc_digital_dev *ddev, bool on);
+ void (*abort_cmd)(struct nfc_digital_dev *ddev);
+};
+
+#define NFC_DIGITAL_POLL_MODE_COUNT_MAX 6 /* 106A, 212F, and 424F in & tg */
+
+typedef int (*digital_poll_t)(struct nfc_digital_dev *ddev, u8 rf_tech);
+
+struct digital_poll_tech {
+ u8 rf_tech;
+ digital_poll_t poll_func;
+};
+
+/**
+ * Driver capabilities - bit mask made of the following values
+ *
+ * @NFC_DIGITAL_DRV_CAPS_IN_CRC: The driver handles CRC calculation in initiator
+ * mode.
+ * @NFC_DIGITAL_DRV_CAPS_TG_CRC: The driver handles CRC calculation in target
+ * mode.
+ */
+#define NFC_DIGITAL_DRV_CAPS_IN_CRC 0x0001
+#define NFC_DIGITAL_DRV_CAPS_TG_CRC 0x0002
+
+struct nfc_digital_dev {
+ struct nfc_dev *nfc_dev;
+ const struct nfc_digital_ops *ops;
+
+ u32 protocols;
+
+ int tx_headroom;
+ int tx_tailroom;
+
+ u32 driver_capabilities;
+ void *driver_data;
+
+ struct digital_poll_tech poll_techs[NFC_DIGITAL_POLL_MODE_COUNT_MAX];
+ u8 poll_tech_count;
+ u8 poll_tech_index;
+ struct mutex poll_lock;
+
+ struct work_struct cmd_work;
+ struct work_struct cmd_complete_work;
+ struct list_head cmd_queue;
+ struct mutex cmd_lock;
+
+ struct delayed_work poll_work;
+
+ u8 curr_protocol;
+ u8 curr_rf_tech;
+ u8 curr_nfc_dep_pni;
+ u8 did;
+ u16 dep_rwt;
+
+ u8 local_payload_max;
+ u8 remote_payload_max;
+
+ struct sk_buff *chaining_skb;
+ struct digital_data_exch *data_exch;
+
+ int atn_count;
+ int nack_count;
+
+ struct sk_buff *saved_skb;
+
+ u16 target_fsc;
+
+ int (*skb_check_crc)(struct sk_buff *skb);
+ void (*skb_add_crc)(struct sk_buff *skb);
+};
+
+struct nfc_digital_dev *nfc_digital_allocate_device(const struct nfc_digital_ops *ops,
+ __u32 supported_protocols,
+ __u32 driver_capabilities,
+ int tx_headroom,
+ int tx_tailroom);
+void nfc_digital_free_device(struct nfc_digital_dev *ndev);
+int nfc_digital_register_device(struct nfc_digital_dev *ndev);
+void nfc_digital_unregister_device(struct nfc_digital_dev *ndev);
+
+static inline void nfc_digital_set_parent_dev(struct nfc_digital_dev *ndev,
+ struct device *dev)
+{
+ nfc_set_parent_dev(ndev->nfc_dev, dev);
+}
+
+static inline void nfc_digital_set_drvdata(struct nfc_digital_dev *dev,
+ void *data)
+{
+ dev->driver_data = data;
+}
+
+static inline void *nfc_digital_get_drvdata(struct nfc_digital_dev *dev)
+{
+ return dev->driver_data;
+}
+
+#endif /* __NFC_DIGITAL_H */
diff --git a/include/net/nfc/hci.h b/include/net/nfc/hci.h
new file mode 100644
index 0000000000..756c11084f
--- /dev/null
+++ b/include/net/nfc/hci.h
@@ -0,0 +1,275 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2011 Intel Corporation. All rights reserved.
+ */
+
+#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 128
+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;
+
+ const 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(const 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,
+ const 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 */
diff --git a/include/net/nfc/llc.h b/include/net/nfc/llc.h
new file mode 100644
index 0000000000..1f699cb178
--- /dev/null
+++ b/include/net/nfc/llc.h
@@ -0,0 +1,37 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Link Layer Control manager public interface
+ *
+ * Copyright (C) 2012 Intel Corporation. All rights reserved.
+ */
+
+#ifndef __NFC_LLC_H_
+#define __NFC_LLC_H_
+
+#include <net/nfc/hci.h>
+#include <linux/skbuff.h>
+
+#define LLC_NOP_NAME "nop"
+#define LLC_SHDLC_NAME "shdlc"
+
+typedef void (*rcv_to_hci_t) (struct nfc_hci_dev *hdev, struct sk_buff *skb);
+typedef int (*xmit_to_drv_t) (struct nfc_hci_dev *hdev, struct sk_buff *skb);
+typedef void (*llc_failure_t) (struct nfc_hci_dev *hdev, int err);
+
+struct nfc_llc;
+
+struct nfc_llc *nfc_llc_allocate(const char *name, struct nfc_hci_dev *hdev,
+ xmit_to_drv_t xmit_to_drv,
+ rcv_to_hci_t rcv_to_hci, int tx_headroom,
+ int tx_tailroom, llc_failure_t llc_failure);
+void nfc_llc_free(struct nfc_llc *llc);
+
+int nfc_llc_start(struct nfc_llc *llc);
+int nfc_llc_stop(struct nfc_llc *llc);
+void nfc_llc_rcv_from_drv(struct nfc_llc *llc, struct sk_buff *skb);
+int nfc_llc_xmit_from_hci(struct nfc_llc *llc, struct sk_buff *skb);
+
+int nfc_llc_init(void);
+void nfc_llc_exit(void);
+
+#endif /* __NFC_LLC_H_ */
diff --git a/include/net/nfc/nci.h b/include/net/nfc/nci.h
new file mode 100644
index 0000000000..e82f55f543
--- /dev/null
+++ b/include/net/nfc/nci.h
@@ -0,0 +1,561 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * The NFC Controller Interface is the communication protocol between an
+ * NFC Controller (NFCC) and a Device Host (DH).
+ *
+ * Copyright (C) 2014 Marvell International Ltd.
+ * Copyright (C) 2011 Texas Instruments, Inc.
+ *
+ * Written by Ilan Elias <ilane@ti.com>
+ *
+ * Acknowledgements:
+ * This file is based on hci.h, which was written
+ * by Maxim Krasnyansky.
+ */
+
+#ifndef __NCI_H
+#define __NCI_H
+
+#include <net/nfc/nfc.h>
+
+/* NCI constants */
+#define NCI_MAX_NUM_MAPPING_CONFIGS 10
+#define NCI_MAX_NUM_RF_CONFIGS 10
+#define NCI_MAX_NUM_CONN 10
+#define NCI_MAX_PARAM_LEN 251
+#define NCI_MAX_PAYLOAD_SIZE 255
+#define NCI_MAX_PACKET_SIZE 258
+#define NCI_MAX_LARGE_PARAMS_NCI_v2 15
+#define NCI_VER_2_MASK 0x20
+
+/* NCI Status Codes */
+#define NCI_STATUS_OK 0x00
+#define NCI_STATUS_REJECTED 0x01
+#define NCI_STATUS_RF_FRAME_CORRUPTED 0x02
+#define NCI_STATUS_FAILED 0x03
+#define NCI_STATUS_NOT_INITIALIZED 0x04
+#define NCI_STATUS_SYNTAX_ERROR 0x05
+#define NCI_STATUS_SEMANTIC_ERROR 0x06
+#define NCI_STATUS_UNKNOWN_GID 0x07
+#define NCI_STATUS_UNKNOWN_OID 0x08
+#define NCI_STATUS_INVALID_PARAM 0x09
+#define NCI_STATUS_MESSAGE_SIZE_EXCEEDED 0x0a
+/* Discovery Specific Status Codes */
+#define NCI_STATUS_DISCOVERY_ALREADY_STARTED 0xa0
+#define NCI_STATUS_DISCOVERY_TARGET_ACTIVATION_FAILED 0xa1
+#define NCI_STATUS_DISCOVERY_TEAR_DOWN 0xa2
+/* RF Interface Specific Status Codes */
+#define NCI_STATUS_RF_TRANSMISSION_ERROR 0xb0
+#define NCI_STATUS_RF_PROTOCOL_ERROR 0xb1
+#define NCI_STATUS_RF_TIMEOUT_ERROR 0xb2
+/* NFCEE Interface Specific Status Codes */
+#define NCI_STATUS_NFCEE_INTERFACE_ACTIVATION_FAILED 0xc0
+#define NCI_STATUS_NFCEE_TRANSMISSION_ERROR 0xc1
+#define NCI_STATUS_NFCEE_PROTOCOL_ERROR 0xc2
+#define NCI_STATUS_NFCEE_TIMEOUT_ERROR 0xc3
+
+/* NFCEE Interface/Protocols */
+#define NCI_NFCEE_INTERFACE_APDU 0x00
+#define NCI_NFCEE_INTERFACE_HCI_ACCESS 0x01
+#define NCI_NFCEE_INTERFACE_TYPE3_CMD_SET 0x02
+#define NCI_NFCEE_INTERFACE_TRANSPARENT 0x03
+
+/* Destination type */
+#define NCI_DESTINATION_NFCC_LOOPBACK 0x01
+#define NCI_DESTINATION_REMOTE_NFC_ENDPOINT 0x02
+#define NCI_DESTINATION_NFCEE 0x03
+
+/* Destination-specific parameters type */
+#define NCI_DESTINATION_SPECIFIC_PARAM_RF_TYPE 0x00
+#define NCI_DESTINATION_SPECIFIC_PARAM_NFCEE_TYPE 0x01
+
+/* NFCEE Discovery Action */
+#define NCI_NFCEE_DISCOVERY_ACTION_DISABLE 0x00
+#define NCI_NFCEE_DISCOVERY_ACTION_ENABLE 0x01
+
+/* NCI RF Technology and Mode */
+#define NCI_NFC_A_PASSIVE_POLL_MODE 0x00
+#define NCI_NFC_B_PASSIVE_POLL_MODE 0x01
+#define NCI_NFC_F_PASSIVE_POLL_MODE 0x02
+#define NCI_NFC_A_ACTIVE_POLL_MODE 0x03
+#define NCI_NFC_F_ACTIVE_POLL_MODE 0x05
+#define NCI_NFC_V_PASSIVE_POLL_MODE 0x06
+#define NCI_NFC_A_PASSIVE_LISTEN_MODE 0x80
+#define NCI_NFC_B_PASSIVE_LISTEN_MODE 0x81
+#define NCI_NFC_F_PASSIVE_LISTEN_MODE 0x82
+#define NCI_NFC_A_ACTIVE_LISTEN_MODE 0x83
+#define NCI_NFC_F_ACTIVE_LISTEN_MODE 0x85
+
+#define NCI_RF_TECH_MODE_LISTEN_MASK 0x80
+
+/* NCI RF Technologies */
+#define NCI_NFC_RF_TECHNOLOGY_A 0x00
+#define NCI_NFC_RF_TECHNOLOGY_B 0x01
+#define NCI_NFC_RF_TECHNOLOGY_F 0x02
+#define NCI_NFC_RF_TECHNOLOGY_V 0x03
+
+/* NCI Bit Rates */
+#define NCI_NFC_BIT_RATE_106 0x00
+#define NCI_NFC_BIT_RATE_212 0x01
+#define NCI_NFC_BIT_RATE_424 0x02
+#define NCI_NFC_BIT_RATE_848 0x03
+#define NCI_NFC_BIT_RATE_1695 0x04
+#define NCI_NFC_BIT_RATE_3390 0x05
+#define NCI_NFC_BIT_RATE_6780 0x06
+#define NCI_NFC_BIT_RATE_26 0x20
+
+/* NCI RF Protocols */
+#define NCI_RF_PROTOCOL_UNKNOWN 0x00
+#define NCI_RF_PROTOCOL_T1T 0x01
+#define NCI_RF_PROTOCOL_T2T 0x02
+#define NCI_RF_PROTOCOL_T3T 0x03
+#define NCI_RF_PROTOCOL_ISO_DEP 0x04
+#define NCI_RF_PROTOCOL_NFC_DEP 0x05
+#define NCI_RF_PROTOCOL_T5T 0x06
+
+/* NCI RF Interfaces */
+#define NCI_RF_INTERFACE_NFCEE_DIRECT 0x00
+#define NCI_RF_INTERFACE_FRAME 0x01
+#define NCI_RF_INTERFACE_ISO_DEP 0x02
+#define NCI_RF_INTERFACE_NFC_DEP 0x03
+
+/* NCI Configuration Parameter Tags */
+#define NCI_PN_ATR_REQ_GEN_BYTES 0x29
+#define NCI_LN_ATR_RES_GEN_BYTES 0x61
+#define NCI_LA_SEL_INFO 0x32
+#define NCI_LF_PROTOCOL_TYPE 0x50
+#define NCI_LF_CON_BITR_F 0x54
+
+/* NCI Configuration Parameters masks */
+#define NCI_LA_SEL_INFO_ISO_DEP_MASK 0x20
+#define NCI_LA_SEL_INFO_NFC_DEP_MASK 0x40
+#define NCI_LF_PROTOCOL_TYPE_NFC_DEP_MASK 0x02
+#define NCI_LF_CON_BITR_F_212 0x02
+#define NCI_LF_CON_BITR_F_424 0x04
+
+/* NCI 2.x Feature Enable Bit */
+#define NCI_FEATURE_DISABLE 0x00
+
+/* NCI Reset types */
+#define NCI_RESET_TYPE_KEEP_CONFIG 0x00
+#define NCI_RESET_TYPE_RESET_CONFIG 0x01
+
+/* NCI Static RF connection ID */
+#define NCI_STATIC_RF_CONN_ID 0x00
+
+/* NCI Data Flow Control */
+#define NCI_DATA_FLOW_CONTROL_NOT_USED 0xff
+
+/* NCI RF_DISCOVER_MAP_CMD modes */
+#define NCI_DISC_MAP_MODE_POLL 0x01
+#define NCI_DISC_MAP_MODE_LISTEN 0x02
+
+/* NCI Discover Notification Type */
+#define NCI_DISCOVER_NTF_TYPE_LAST 0x00
+#define NCI_DISCOVER_NTF_TYPE_LAST_NFCC 0x01
+#define NCI_DISCOVER_NTF_TYPE_MORE 0x02
+
+/* NCI Deactivation Type */
+#define NCI_DEACTIVATE_TYPE_IDLE_MODE 0x00
+#define NCI_DEACTIVATE_TYPE_SLEEP_MODE 0x01
+#define NCI_DEACTIVATE_TYPE_SLEEP_AF_MODE 0x02
+#define NCI_DEACTIVATE_TYPE_DISCOVERY 0x03
+
+/* Message Type (MT) */
+#define NCI_MT_DATA_PKT 0x00
+#define NCI_MT_CMD_PKT 0x01
+#define NCI_MT_RSP_PKT 0x02
+#define NCI_MT_NTF_PKT 0x03
+
+#define nci_mt(hdr) (((hdr)[0]>>5)&0x07)
+#define nci_mt_set(hdr, mt) ((hdr)[0] |= (__u8)(((mt)&0x07)<<5))
+
+/* Packet Boundary Flag (PBF) */
+#define NCI_PBF_LAST 0x00
+#define NCI_PBF_CONT 0x01
+
+#define nci_pbf(hdr) (__u8)(((hdr)[0]>>4)&0x01)
+#define nci_pbf_set(hdr, pbf) ((hdr)[0] |= (__u8)(((pbf)&0x01)<<4))
+
+/* Control Opcode manipulation */
+#define nci_opcode_pack(gid, oid) (__u16)((((__u16)((gid)&0x0f))<<8)|\
+ ((__u16)((oid)&0x3f)))
+#define nci_opcode(hdr) nci_opcode_pack(hdr[0], hdr[1])
+#define nci_opcode_gid(op) (__u8)(((op)&0x0f00)>>8)
+#define nci_opcode_oid(op) (__u8)((op)&0x003f)
+
+/* Payload Length */
+#define nci_plen(hdr) (__u8)((hdr)[2])
+
+/* Connection ID */
+#define nci_conn_id(hdr) (__u8)(((hdr)[0])&0x0f)
+
+/* GID values */
+#define NCI_GID_CORE 0x0
+#define NCI_GID_RF_MGMT 0x1
+#define NCI_GID_NFCEE_MGMT 0x2
+#define NCI_GID_PROPRIETARY 0xf
+
+/* ----- NCI over SPI head/crc(tail) room needed for outgoing frames ----- */
+#define NCI_SPI_HDR_LEN 4
+#define NCI_SPI_CRC_LEN 2
+
+/* ---- NCI Packet structures ---- */
+#define NCI_CTRL_HDR_SIZE 3
+#define NCI_DATA_HDR_SIZE 3
+
+struct nci_ctrl_hdr {
+ __u8 gid; /* MT & PBF & GID */
+ __u8 oid;
+ __u8 plen;
+} __packed;
+
+struct nci_data_hdr {
+ __u8 conn_id; /* MT & PBF & ConnID */
+ __u8 rfu;
+ __u8 plen;
+} __packed;
+
+/* ------------------------ */
+/* ----- NCI Commands ---- */
+/* ------------------------ */
+#define NCI_OP_CORE_RESET_CMD nci_opcode_pack(NCI_GID_CORE, 0x00)
+struct nci_core_reset_cmd {
+ __u8 reset_type;
+} __packed;
+
+#define NCI_OP_CORE_INIT_CMD nci_opcode_pack(NCI_GID_CORE, 0x01)
+/* To support NCI 2.x */
+struct nci_core_init_v2_cmd {
+ u8 feature1;
+ u8 feature2;
+};
+
+#define NCI_OP_CORE_SET_CONFIG_CMD nci_opcode_pack(NCI_GID_CORE, 0x02)
+struct set_config_param {
+ __u8 id;
+ __u8 len;
+ __u8 val[NCI_MAX_PARAM_LEN];
+} __packed;
+
+struct nci_core_set_config_cmd {
+ __u8 num_params;
+ struct set_config_param param; /* support 1 param per cmd is enough */
+} __packed;
+
+#define NCI_OP_CORE_CONN_CREATE_CMD nci_opcode_pack(NCI_GID_CORE, 0x04)
+#define DEST_SPEC_PARAMS_ID_INDEX 0
+#define DEST_SPEC_PARAMS_PROTOCOL_INDEX 1
+struct dest_spec_params {
+ __u8 id;
+ __u8 protocol;
+} __packed;
+
+struct core_conn_create_dest_spec_params {
+ __u8 type;
+ __u8 length;
+ __u8 value[];
+} __packed;
+
+struct nci_core_conn_create_cmd {
+ __u8 destination_type;
+ __u8 number_destination_params;
+ struct core_conn_create_dest_spec_params params[];
+} __packed;
+
+#define NCI_OP_CORE_CONN_CLOSE_CMD nci_opcode_pack(NCI_GID_CORE, 0x05)
+
+#define NCI_OP_RF_DISCOVER_MAP_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x00)
+struct disc_map_config {
+ __u8 rf_protocol;
+ __u8 mode;
+ __u8 rf_interface;
+} __packed;
+
+struct nci_rf_disc_map_cmd {
+ __u8 num_mapping_configs;
+ struct disc_map_config mapping_configs
+ [NCI_MAX_NUM_MAPPING_CONFIGS];
+} __packed;
+
+#define NCI_OP_RF_DISCOVER_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x03)
+struct disc_config {
+ __u8 rf_tech_and_mode;
+ __u8 frequency;
+} __packed;
+
+struct nci_rf_disc_cmd {
+ __u8 num_disc_configs;
+ struct disc_config disc_configs[NCI_MAX_NUM_RF_CONFIGS];
+} __packed;
+
+#define NCI_OP_RF_DISCOVER_SELECT_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x04)
+struct nci_rf_discover_select_cmd {
+ __u8 rf_discovery_id;
+ __u8 rf_protocol;
+ __u8 rf_interface;
+} __packed;
+
+#define NCI_OP_RF_DEACTIVATE_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x06)
+struct nci_rf_deactivate_cmd {
+ __u8 type;
+} __packed;
+
+#define NCI_OP_NFCEE_DISCOVER_CMD nci_opcode_pack(NCI_GID_NFCEE_MGMT, 0x00)
+struct nci_nfcee_discover_cmd {
+ __u8 discovery_action;
+} __packed;
+
+#define NCI_OP_NFCEE_MODE_SET_CMD nci_opcode_pack(NCI_GID_NFCEE_MGMT, 0x01)
+#define NCI_NFCEE_DISABLE 0x00
+#define NCI_NFCEE_ENABLE 0x01
+struct nci_nfcee_mode_set_cmd {
+ __u8 nfcee_id;
+ __u8 nfcee_mode;
+} __packed;
+
+#define NCI_OP_CORE_GET_CONFIG_CMD nci_opcode_pack(NCI_GID_CORE, 0x03)
+
+/* ----------------------- */
+/* ---- NCI Responses ---- */
+/* ----------------------- */
+#define NCI_OP_CORE_RESET_RSP nci_opcode_pack(NCI_GID_CORE, 0x00)
+struct nci_core_reset_rsp {
+ __u8 status;
+ __u8 nci_ver;
+ __u8 config_status;
+} __packed;
+
+#define NCI_OP_CORE_INIT_RSP nci_opcode_pack(NCI_GID_CORE, 0x01)
+struct nci_core_init_rsp_1 {
+ __u8 status;
+ __le32 nfcc_features;
+ __u8 num_supported_rf_interfaces;
+ __u8 supported_rf_interfaces[]; /* variable size array */
+ /* continuted in nci_core_init_rsp_2 */
+} __packed;
+
+struct nci_core_init_rsp_2 {
+ __u8 max_logical_connections;
+ __le16 max_routing_table_size;
+ __u8 max_ctrl_pkt_payload_len;
+ __le16 max_size_for_large_params;
+ __u8 manufact_id;
+ __le32 manufact_specific_info;
+} __packed;
+
+/* To support NCI ver 2.x */
+struct nci_core_init_rsp_nci_ver2 {
+ u8 status;
+ __le32 nfcc_features;
+ u8 max_logical_connections;
+ __le16 max_routing_table_size;
+ u8 max_ctrl_pkt_payload_len;
+ u8 max_data_pkt_hci_payload_len;
+ u8 number_of_hci_credit;
+ __le16 max_nfc_v_frame_size;
+ u8 num_supported_rf_interfaces;
+ u8 supported_rf_interfaces[];
+} __packed;
+
+#define NCI_OP_CORE_SET_CONFIG_RSP nci_opcode_pack(NCI_GID_CORE, 0x02)
+struct nci_core_set_config_rsp {
+ __u8 status;
+ __u8 num_params;
+ __u8 params_id[]; /* variable size array */
+} __packed;
+
+#define NCI_OP_CORE_CONN_CREATE_RSP nci_opcode_pack(NCI_GID_CORE, 0x04)
+struct nci_core_conn_create_rsp {
+ __u8 status;
+ __u8 max_ctrl_pkt_payload_len;
+ __u8 credits_cnt;
+ __u8 conn_id;
+} __packed;
+
+#define NCI_OP_CORE_CONN_CLOSE_RSP nci_opcode_pack(NCI_GID_CORE, 0x05)
+
+#define NCI_OP_RF_DISCOVER_MAP_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x00)
+
+#define NCI_OP_RF_DISCOVER_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x03)
+
+#define NCI_OP_RF_DISCOVER_SELECT_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x04)
+
+#define NCI_OP_RF_DEACTIVATE_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x06)
+
+#define NCI_OP_NFCEE_DISCOVER_RSP nci_opcode_pack(NCI_GID_NFCEE_MGMT, 0x00)
+struct nci_nfcee_discover_rsp {
+ __u8 status;
+ __u8 num_nfcee;
+} __packed;
+
+#define NCI_OP_NFCEE_MODE_SET_RSP nci_opcode_pack(NCI_GID_NFCEE_MGMT, 0x01)
+
+#define NCI_OP_CORE_GET_CONFIG_RSP nci_opcode_pack(NCI_GID_CORE, 0x03)
+
+/* --------------------------- */
+/* ---- NCI Notifications ---- */
+/* --------------------------- */
+#define NCI_OP_CORE_RESET_NTF nci_opcode_pack(NCI_GID_CORE, 0x00)
+struct nci_core_reset_ntf {
+ u8 reset_trigger;
+ u8 config_status;
+ u8 nci_ver;
+ u8 manufact_id;
+ u8 manufacturer_specific_len;
+ __le32 manufact_specific_info;
+} __packed;
+
+#define NCI_OP_CORE_CONN_CREDITS_NTF nci_opcode_pack(NCI_GID_CORE, 0x06)
+struct conn_credit_entry {
+ __u8 conn_id;
+ __u8 credits;
+} __packed;
+
+struct nci_core_conn_credit_ntf {
+ __u8 num_entries;
+ struct conn_credit_entry conn_entries[NCI_MAX_NUM_CONN];
+} __packed;
+
+#define NCI_OP_CORE_GENERIC_ERROR_NTF nci_opcode_pack(NCI_GID_CORE, 0x07)
+
+#define NCI_OP_CORE_INTF_ERROR_NTF nci_opcode_pack(NCI_GID_CORE, 0x08)
+struct nci_core_intf_error_ntf {
+ __u8 status;
+ __u8 conn_id;
+} __packed;
+
+#define NCI_OP_RF_DISCOVER_NTF nci_opcode_pack(NCI_GID_RF_MGMT, 0x03)
+struct rf_tech_specific_params_nfca_poll {
+ __u16 sens_res;
+ __u8 nfcid1_len; /* 0, 4, 7, or 10 Bytes */
+ __u8 nfcid1[NFC_NFCID1_MAXSIZE];
+ __u8 sel_res_len; /* 0 or 1 Bytes */
+ __u8 sel_res;
+} __packed;
+
+struct rf_tech_specific_params_nfcb_poll {
+ __u8 sensb_res_len;
+ __u8 sensb_res[NFC_SENSB_RES_MAXSIZE]; /* 11 or 12 Bytes */
+} __packed;
+
+struct rf_tech_specific_params_nfcf_poll {
+ __u8 bit_rate;
+ __u8 sensf_res_len;
+ __u8 sensf_res[NFC_SENSF_RES_MAXSIZE]; /* 16 or 18 Bytes */
+} __packed;
+
+struct rf_tech_specific_params_nfcv_poll {
+ __u8 res_flags;
+ __u8 dsfid;
+ __u8 uid[NFC_ISO15693_UID_MAXSIZE]; /* 8 Bytes */
+} __packed;
+
+struct rf_tech_specific_params_nfcf_listen {
+ __u8 local_nfcid2_len;
+ __u8 local_nfcid2[NFC_NFCID2_MAXSIZE]; /* 0 or 8 Bytes */
+} __packed;
+
+struct nci_rf_discover_ntf {
+ __u8 rf_discovery_id;
+ __u8 rf_protocol;
+ __u8 rf_tech_and_mode;
+ __u8 rf_tech_specific_params_len;
+
+ union {
+ struct rf_tech_specific_params_nfca_poll nfca_poll;
+ struct rf_tech_specific_params_nfcb_poll nfcb_poll;
+ struct rf_tech_specific_params_nfcf_poll nfcf_poll;
+ struct rf_tech_specific_params_nfcv_poll nfcv_poll;
+ } rf_tech_specific_params;
+
+ __u8 ntf_type;
+} __packed;
+
+#define NCI_OP_RF_INTF_ACTIVATED_NTF nci_opcode_pack(NCI_GID_RF_MGMT, 0x05)
+struct activation_params_nfca_poll_iso_dep {
+ __u8 rats_res_len;
+ __u8 rats_res[20];
+};
+
+struct activation_params_nfcb_poll_iso_dep {
+ __u8 attrib_res_len;
+ __u8 attrib_res[50];
+};
+
+struct activation_params_poll_nfc_dep {
+ __u8 atr_res_len;
+ __u8 atr_res[NFC_ATR_RES_MAXSIZE - 2]; /* ATR_RES from byte 3 */
+};
+
+struct activation_params_listen_nfc_dep {
+ __u8 atr_req_len;
+ __u8 atr_req[NFC_ATR_REQ_MAXSIZE - 2]; /* ATR_REQ from byte 3 */
+};
+
+struct nci_rf_intf_activated_ntf {
+ __u8 rf_discovery_id;
+ __u8 rf_interface;
+ __u8 rf_protocol;
+ __u8 activation_rf_tech_and_mode;
+ __u8 max_data_pkt_payload_size;
+ __u8 initial_num_credits;
+ __u8 rf_tech_specific_params_len;
+
+ union {
+ struct rf_tech_specific_params_nfca_poll nfca_poll;
+ struct rf_tech_specific_params_nfcb_poll nfcb_poll;
+ struct rf_tech_specific_params_nfcf_poll nfcf_poll;
+ struct rf_tech_specific_params_nfcv_poll nfcv_poll;
+ struct rf_tech_specific_params_nfcf_listen nfcf_listen;
+ } rf_tech_specific_params;
+
+ __u8 data_exch_rf_tech_and_mode;
+ __u8 data_exch_tx_bit_rate;
+ __u8 data_exch_rx_bit_rate;
+ __u8 activation_params_len;
+
+ union {
+ struct activation_params_nfca_poll_iso_dep nfca_poll_iso_dep;
+ struct activation_params_nfcb_poll_iso_dep nfcb_poll_iso_dep;
+ struct activation_params_poll_nfc_dep poll_nfc_dep;
+ struct activation_params_listen_nfc_dep listen_nfc_dep;
+ } activation_params;
+
+} __packed;
+
+#define NCI_OP_RF_DEACTIVATE_NTF nci_opcode_pack(NCI_GID_RF_MGMT, 0x06)
+struct nci_rf_deactivate_ntf {
+ __u8 type;
+ __u8 reason;
+} __packed;
+
+#define NCI_OP_RF_NFCEE_ACTION_NTF nci_opcode_pack(NCI_GID_RF_MGMT, 0x09)
+struct nci_rf_nfcee_action_ntf {
+ __u8 nfcee_id;
+ __u8 trigger;
+ __u8 supported_data_length;
+ __u8 supported_data[];
+} __packed;
+
+#define NCI_OP_NFCEE_DISCOVER_NTF nci_opcode_pack(NCI_GID_NFCEE_MGMT, 0x00)
+struct nci_nfcee_supported_protocol {
+ __u8 num_protocol;
+ __u8 supported_protocol[];
+} __packed;
+
+struct nci_nfcee_information_tlv {
+ __u8 num_tlv;
+ __u8 information_tlv[];
+} __packed;
+
+struct nci_nfcee_discover_ntf {
+ __u8 nfcee_id;
+ __u8 nfcee_status;
+ struct nci_nfcee_supported_protocol supported_protocols;
+ struct nci_nfcee_information_tlv information_tlv;
+} __packed;
+
+#define NCI_OP_CORE_RESET_NTF nci_opcode_pack(NCI_GID_CORE, 0x00)
+
+#endif /* __NCI_H */
diff --git a/include/net/nfc/nci_core.h b/include/net/nfc/nci_core.h
new file mode 100644
index 0000000000..ea8595651c
--- /dev/null
+++ b/include/net/nfc/nci_core.h
@@ -0,0 +1,465 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * The NFC Controller Interface is the communication protocol between an
+ * NFC Controller (NFCC) and a Device Host (DH).
+ *
+ * Copyright (C) 2011 Texas Instruments, Inc.
+ * Copyright (C) 2013 Intel Corporation. All rights reserved.
+ * Copyright (C) 2014 Marvell International Ltd.
+ *
+ * Written by Ilan Elias <ilane@ti.com>
+ *
+ * Acknowledgements:
+ * This file is based on hci_core.h, which was written
+ * by Maxim Krasnyansky.
+ */
+
+#ifndef __NCI_CORE_H
+#define __NCI_CORE_H
+
+#include <linux/interrupt.h>
+#include <linux/skbuff.h>
+#include <linux/tty.h>
+
+#include <net/nfc/nfc.h>
+#include <net/nfc/nci.h>
+
+/* NCI device flags */
+enum nci_flag {
+ NCI_INIT,
+ NCI_UP,
+ NCI_DATA_EXCHANGE,
+ NCI_DATA_EXCHANGE_TO,
+ NCI_UNREG,
+};
+
+/* NCI device states */
+enum nci_state {
+ NCI_IDLE,
+ NCI_DISCOVERY,
+ NCI_W4_ALL_DISCOVERIES,
+ NCI_W4_HOST_SELECT,
+ NCI_POLL_ACTIVE,
+ NCI_LISTEN_ACTIVE,
+ NCI_LISTEN_SLEEP,
+};
+
+/* NCI timeouts */
+#define NCI_RESET_TIMEOUT 5000
+#define NCI_INIT_TIMEOUT 5000
+#define NCI_SET_CONFIG_TIMEOUT 5000
+#define NCI_RF_DISC_TIMEOUT 5000
+#define NCI_RF_DISC_SELECT_TIMEOUT 5000
+#define NCI_RF_DEACTIVATE_TIMEOUT 30000
+#define NCI_CMD_TIMEOUT 5000
+#define NCI_DATA_TIMEOUT 700
+
+struct nci_dev;
+
+struct nci_driver_ops {
+ __u16 opcode;
+ int (*rsp)(struct nci_dev *dev, struct sk_buff *skb);
+ int (*ntf)(struct nci_dev *dev, struct sk_buff *skb);
+};
+
+struct nci_ops {
+ int (*init)(struct nci_dev *ndev);
+ int (*open)(struct nci_dev *ndev);
+ int (*close)(struct nci_dev *ndev);
+ int (*send)(struct nci_dev *ndev, struct sk_buff *skb);
+ int (*setup)(struct nci_dev *ndev);
+ int (*post_setup)(struct nci_dev *ndev);
+ int (*fw_download)(struct nci_dev *ndev, const char *firmware_name);
+ __u32 (*get_rfprotocol)(struct nci_dev *ndev, __u8 rf_protocol);
+ int (*discover_se)(struct nci_dev *ndev);
+ int (*disable_se)(struct nci_dev *ndev, u32 se_idx);
+ int (*enable_se)(struct nci_dev *ndev, u32 se_idx);
+ int (*se_io)(struct nci_dev *ndev, u32 se_idx,
+ u8 *apdu, size_t apdu_length,
+ se_io_cb_t cb, void *cb_context);
+ int (*hci_load_session)(struct nci_dev *ndev);
+ void (*hci_event_received)(struct nci_dev *ndev, u8 pipe, u8 event,
+ struct sk_buff *skb);
+ void (*hci_cmd_received)(struct nci_dev *ndev, u8 pipe, u8 cmd,
+ struct sk_buff *skb);
+
+ const struct nci_driver_ops *prop_ops;
+ size_t n_prop_ops;
+
+ const struct nci_driver_ops *core_ops;
+ size_t n_core_ops;
+};
+
+#define NCI_MAX_SUPPORTED_RF_INTERFACES 4
+#define NCI_MAX_DISCOVERED_TARGETS 10
+#define NCI_MAX_NUM_NFCEE 255
+#define NCI_MAX_CONN_ID 7
+#define NCI_MAX_PROPRIETARY_CMD 64
+
+struct nci_conn_info {
+ struct list_head list;
+ /* NCI specification 4.4.2 Connection Creation
+ * The combination of destination type and destination specific
+ * parameters shall uniquely identify a single destination for the
+ * Logical Connection
+ */
+ struct dest_spec_params *dest_params;
+ __u8 dest_type;
+ __u8 conn_id;
+ __u8 max_pkt_payload_len;
+
+ atomic_t credits_cnt;
+ __u8 initial_num_credits;
+
+ data_exchange_cb_t data_exchange_cb;
+ void *data_exchange_cb_context;
+
+ struct sk_buff *rx_skb;
+};
+
+#define NCI_INVALID_CONN_ID 0x80
+
+#define NCI_HCI_ANY_OPEN_PIPE 0x03
+
+/* Gates */
+#define NCI_HCI_ADMIN_GATE 0x00
+#define NCI_HCI_LOOPBACK_GATE 0x04
+#define NCI_HCI_IDENTITY_MGMT_GATE 0x05
+#define NCI_HCI_LINK_MGMT_GATE 0x06
+
+/* Pipes */
+#define NCI_HCI_LINK_MGMT_PIPE 0x00
+#define NCI_HCI_ADMIN_PIPE 0x01
+
+/* Generic responses */
+#define NCI_HCI_ANY_OK 0x00
+#define NCI_HCI_ANY_E_NOT_CONNECTED 0x01
+#define NCI_HCI_ANY_E_CMD_PAR_UNKNOWN 0x02
+#define NCI_HCI_ANY_E_NOK 0x03
+#define NCI_HCI_ANY_E_PIPES_FULL 0x04
+#define NCI_HCI_ANY_E_REG_PAR_UNKNOWN 0x05
+#define NCI_HCI_ANY_E_PIPE_NOT_OPENED 0x06
+#define NCI_HCI_ANY_E_CMD_NOT_SUPPORTED 0x07
+#define NCI_HCI_ANY_E_INHIBITED 0x08
+#define NCI_HCI_ANY_E_TIMEOUT 0x09
+#define NCI_HCI_ANY_E_REG_ACCESS_DENIED 0x0a
+#define NCI_HCI_ANY_E_PIPE_ACCESS_DENIED 0x0b
+
+#define NCI_HCI_DO_NOT_OPEN_PIPE 0x81
+#define NCI_HCI_INVALID_PIPE 0x80
+#define NCI_HCI_INVALID_GATE 0xFF
+#define NCI_HCI_INVALID_HOST 0x80
+
+#define NCI_HCI_MAX_CUSTOM_GATES 50
+/*
+ * According to specification 102 622 chapter 4.4 Pipes,
+ * the pipe identifier is 7 bits long.
+ */
+#define NCI_HCI_MAX_PIPES 128
+
+struct nci_hci_gate {
+ u8 gate;
+ u8 pipe;
+ u8 dest_host;
+} __packed;
+
+struct nci_hci_pipe {
+ u8 gate;
+ u8 host;
+} __packed;
+
+struct nci_hci_init_data {
+ u8 gate_count;
+ struct nci_hci_gate gates[NCI_HCI_MAX_CUSTOM_GATES];
+ char session_id[9];
+};
+
+#define NCI_HCI_MAX_GATES 256
+
+struct nci_hci_dev {
+ u8 nfcee_id;
+ struct nci_dev *ndev;
+ struct nci_conn_info *conn_info;
+
+ struct nci_hci_init_data init_data;
+ struct nci_hci_pipe pipes[NCI_HCI_MAX_PIPES];
+ u8 gate2pipe[NCI_HCI_MAX_GATES];
+ int expected_pipes;
+ int count_pipes;
+
+ struct sk_buff_head rx_hcp_frags;
+ struct work_struct msg_rx_work;
+ struct sk_buff_head msg_rx_queue;
+};
+
+/* NCI Core structures */
+struct nci_dev {
+ struct nfc_dev *nfc_dev;
+ const struct nci_ops *ops;
+ struct nci_hci_dev *hci_dev;
+
+ int tx_headroom;
+ int tx_tailroom;
+
+ atomic_t state;
+ unsigned long flags;
+
+ atomic_t cmd_cnt;
+ __u8 cur_conn_id;
+
+ struct list_head conn_info_list;
+ struct nci_conn_info *rf_conn_info;
+
+ struct timer_list cmd_timer;
+ struct timer_list data_timer;
+
+ struct workqueue_struct *cmd_wq;
+ struct work_struct cmd_work;
+
+ struct workqueue_struct *rx_wq;
+ struct work_struct rx_work;
+
+ struct workqueue_struct *tx_wq;
+ struct work_struct tx_work;
+
+ struct sk_buff_head cmd_q;
+ struct sk_buff_head rx_q;
+ struct sk_buff_head tx_q;
+
+ struct mutex req_lock;
+ struct completion req_completion;
+ __u32 req_status;
+ __u32 req_result;
+
+ void *driver_data;
+
+ __u32 poll_prots;
+ __u32 target_active_prot;
+
+ struct nfc_target targets[NCI_MAX_DISCOVERED_TARGETS];
+ int n_targets;
+
+ /* received during NCI_OP_CORE_RESET_RSP */
+ __u8 nci_ver;
+
+ /* received during NCI_OP_CORE_INIT_RSP */
+ __u32 nfcc_features;
+ __u8 num_supported_rf_interfaces;
+ __u8 supported_rf_interfaces
+ [NCI_MAX_SUPPORTED_RF_INTERFACES];
+ __u8 max_logical_connections;
+ __u16 max_routing_table_size;
+ __u8 max_ctrl_pkt_payload_len;
+ __u16 max_size_for_large_params;
+ __u8 manufact_id;
+ __u32 manufact_specific_info;
+
+ /* Save RF Discovery ID or NFCEE ID under conn_create */
+ struct dest_spec_params cur_params;
+ /* Save destination type under conn_create */
+ __u8 cur_dest_type;
+
+ /* stored during nci_data_exchange */
+ struct sk_buff *rx_data_reassembly;
+
+ /* stored during intf_activated_ntf */
+ __u8 remote_gb[NFC_MAX_GT_LEN];
+ __u8 remote_gb_len;
+};
+
+/* ----- NCI Devices ----- */
+struct nci_dev *nci_allocate_device(const struct nci_ops *ops,
+ __u32 supported_protocols,
+ int tx_headroom,
+ int tx_tailroom);
+void nci_free_device(struct nci_dev *ndev);
+int nci_register_device(struct nci_dev *ndev);
+void nci_unregister_device(struct nci_dev *ndev);
+int nci_request(struct nci_dev *ndev,
+ void (*req)(struct nci_dev *ndev,
+ const void *opt),
+ const void *opt, __u32 timeout);
+int nci_prop_cmd(struct nci_dev *ndev, __u8 oid, size_t len,
+ const __u8 *payload);
+int nci_core_cmd(struct nci_dev *ndev, __u16 opcode, size_t len,
+ const __u8 *payload);
+int nci_core_reset(struct nci_dev *ndev);
+int nci_core_init(struct nci_dev *ndev);
+
+int nci_recv_frame(struct nci_dev *ndev, struct sk_buff *skb);
+int nci_send_frame(struct nci_dev *ndev, struct sk_buff *skb);
+int nci_set_config(struct nci_dev *ndev, __u8 id, size_t len, const __u8 *val);
+
+int nci_nfcee_discover(struct nci_dev *ndev, u8 action);
+int nci_nfcee_mode_set(struct nci_dev *ndev, u8 nfcee_id, u8 nfcee_mode);
+int nci_core_conn_create(struct nci_dev *ndev, u8 destination_type,
+ u8 number_destination_params,
+ size_t params_len,
+ const struct core_conn_create_dest_spec_params *params);
+int nci_core_conn_close(struct nci_dev *ndev, u8 conn_id);
+int nci_nfcc_loopback(struct nci_dev *ndev, const void *data, size_t data_len,
+ struct sk_buff **resp);
+
+struct nci_hci_dev *nci_hci_allocate(struct nci_dev *ndev);
+void nci_hci_deallocate(struct nci_dev *ndev);
+int nci_hci_send_event(struct nci_dev *ndev, u8 gate, u8 event,
+ const u8 *param, size_t param_len);
+int nci_hci_send_cmd(struct nci_dev *ndev, u8 gate,
+ u8 cmd, const u8 *param, size_t param_len,
+ struct sk_buff **skb);
+int nci_hci_open_pipe(struct nci_dev *ndev, u8 pipe);
+int nci_hci_connect_gate(struct nci_dev *ndev, u8 dest_host,
+ u8 dest_gate, u8 pipe);
+int nci_hci_set_param(struct nci_dev *ndev, u8 gate, u8 idx,
+ const u8 *param, size_t param_len);
+int nci_hci_get_param(struct nci_dev *ndev, u8 gate, u8 idx,
+ struct sk_buff **skb);
+int nci_hci_clear_all_pipes(struct nci_dev *ndev);
+int nci_hci_dev_session_init(struct nci_dev *ndev);
+
+static inline struct sk_buff *nci_skb_alloc(struct nci_dev *ndev,
+ unsigned int len,
+ gfp_t how)
+{
+ struct sk_buff *skb;
+
+ skb = alloc_skb(len + ndev->tx_headroom + ndev->tx_tailroom, how);
+ if (skb)
+ skb_reserve(skb, ndev->tx_headroom);
+
+ return skb;
+}
+
+static inline void nci_set_parent_dev(struct nci_dev *ndev, struct device *dev)
+{
+ nfc_set_parent_dev(ndev->nfc_dev, dev);
+}
+
+static inline void nci_set_drvdata(struct nci_dev *ndev, void *data)
+{
+ ndev->driver_data = data;
+}
+
+static inline void *nci_get_drvdata(struct nci_dev *ndev)
+{
+ return ndev->driver_data;
+}
+
+static inline int nci_set_vendor_cmds(struct nci_dev *ndev,
+ const struct nfc_vendor_cmd *cmds,
+ int n_cmds)
+{
+ return nfc_set_vendor_cmds(ndev->nfc_dev, cmds, n_cmds);
+}
+
+void nci_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb);
+void nci_ntf_packet(struct nci_dev *ndev, struct sk_buff *skb);
+int nci_prop_rsp_packet(struct nci_dev *ndev, __u16 opcode,
+ struct sk_buff *skb);
+int nci_prop_ntf_packet(struct nci_dev *ndev, __u16 opcode,
+ struct sk_buff *skb);
+int nci_core_rsp_packet(struct nci_dev *ndev, __u16 opcode,
+ struct sk_buff *skb);
+int nci_core_ntf_packet(struct nci_dev *ndev, __u16 opcode,
+ struct sk_buff *skb);
+void nci_rx_data_packet(struct nci_dev *ndev, struct sk_buff *skb);
+int nci_send_cmd(struct nci_dev *ndev, __u16 opcode, __u8 plen, const void *payload);
+int nci_send_data(struct nci_dev *ndev, __u8 conn_id, struct sk_buff *skb);
+int nci_conn_max_data_pkt_payload_size(struct nci_dev *ndev, __u8 conn_id);
+void nci_data_exchange_complete(struct nci_dev *ndev, struct sk_buff *skb,
+ __u8 conn_id, int err);
+void nci_hci_data_received_cb(void *context, struct sk_buff *skb, int err);
+
+void nci_clear_target_list(struct nci_dev *ndev);
+
+/* ----- NCI requests ----- */
+#define NCI_REQ_DONE 0
+#define NCI_REQ_PEND 1
+#define NCI_REQ_CANCELED 2
+
+void nci_req_complete(struct nci_dev *ndev, int result);
+struct nci_conn_info *nci_get_conn_info_by_conn_id(struct nci_dev *ndev,
+ int conn_id);
+int nci_get_conn_info_by_dest_type_params(struct nci_dev *ndev, u8 dest_type,
+ const struct dest_spec_params *params);
+
+/* ----- NCI status code ----- */
+int nci_to_errno(__u8 code);
+
+/* ----- NCI over SPI acknowledge modes ----- */
+#define NCI_SPI_CRC_DISABLED 0x00
+#define NCI_SPI_CRC_ENABLED 0x01
+
+/* ----- NCI SPI structures ----- */
+struct nci_spi {
+ struct nci_dev *ndev;
+ struct spi_device *spi;
+
+ unsigned int xfer_udelay; /* microseconds delay between
+ transactions */
+
+ unsigned int xfer_speed_hz; /*
+ * SPI clock frequency
+ * 0 => default clock
+ */
+
+ u8 acknowledge_mode;
+
+ struct completion req_completion;
+ u8 req_result;
+};
+
+/* ----- NCI SPI ----- */
+struct nci_spi *nci_spi_allocate_spi(struct spi_device *spi,
+ u8 acknowledge_mode, unsigned int delay,
+ struct nci_dev *ndev);
+int nci_spi_send(struct nci_spi *nspi,
+ struct completion *write_handshake_completion,
+ struct sk_buff *skb);
+struct sk_buff *nci_spi_read(struct nci_spi *nspi);
+
+/* ----- NCI UART ---- */
+
+/* Ioctl */
+#define NCIUARTSETDRIVER _IOW('U', 0, char *)
+
+enum nci_uart_driver {
+ NCI_UART_DRIVER_MARVELL = 0,
+ NCI_UART_DRIVER_MAX
+};
+
+struct nci_uart;
+
+struct nci_uart_ops {
+ int (*open)(struct nci_uart *nci_uart);
+ void (*close)(struct nci_uart *nci_uart);
+ int (*recv)(struct nci_uart *nci_uart, struct sk_buff *skb);
+ int (*send)(struct nci_uart *nci_uart, struct sk_buff *skb);
+ void (*tx_start)(struct nci_uart *nci_uart);
+ void (*tx_done)(struct nci_uart *nci_uart);
+};
+
+struct nci_uart {
+ struct module *owner;
+ struct nci_uart_ops ops;
+ const char *name;
+ enum nci_uart_driver driver;
+
+ /* Dynamic data */
+ struct nci_dev *ndev;
+ spinlock_t rx_lock;
+ struct work_struct write_work;
+ struct tty_struct *tty;
+ unsigned long tx_state;
+ struct sk_buff_head tx_q;
+ struct sk_buff *tx_skb;
+ struct sk_buff *rx_skb;
+ int rx_packet_len;
+ void *drv_data;
+};
+
+int nci_uart_register(struct nci_uart *nu);
+void nci_uart_unregister(struct nci_uart *nu);
+void nci_uart_set_config(struct nci_uart *nu, int baudrate, int flow_ctrl);
+
+#endif /* __NCI_CORE_H */
diff --git a/include/net/nfc/nfc.h b/include/net/nfc/nfc.h
new file mode 100644
index 0000000000..5dee575fbe
--- /dev/null
+++ b/include/net/nfc/nfc.h
@@ -0,0 +1,352 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2011 Instituto Nokia de Tecnologia
+ * Copyright (C) 2014 Marvell International Ltd.
+ *
+ * Authors:
+ * Lauro Ramos Venancio <lauro.venancio@openbossa.org>
+ * Aloisio Almeida Jr <aloisio.almeida@openbossa.org>
+ */
+
+#ifndef __NET_NFC_H
+#define __NET_NFC_H
+
+#include <linux/nfc.h>
+#include <linux/device.h>
+#include <linux/skbuff.h>
+
+#define nfc_dbg(dev, fmt, ...) dev_dbg((dev), "NFC: " fmt, ##__VA_ARGS__)
+#define nfc_info(dev, fmt, ...) dev_info((dev), "NFC: " fmt, ##__VA_ARGS__)
+#define nfc_err(dev, fmt, ...) dev_err((dev), "NFC: " fmt, ##__VA_ARGS__)
+
+struct nfc_phy_ops {
+ int (*write)(void *dev_id, struct sk_buff *skb);
+ int (*enable)(void *dev_id);
+ void (*disable)(void *dev_id);
+};
+
+struct nfc_dev;
+
+/**
+ * data_exchange_cb_t - Definition of nfc_data_exchange callback
+ *
+ * @context: nfc_data_exchange cb_context parameter
+ * @skb: response data
+ * @err: If an error has occurred during data exchange, it is the
+ * error number. Zero means no error.
+ *
+ * When a rx or tx package is lost or corrupted or the target gets out
+ * of the operating field, err is -EIO.
+ */
+typedef void (*data_exchange_cb_t)(void *context, struct sk_buff *skb,
+ int err);
+
+typedef void (*se_io_cb_t)(void *context, u8 *apdu, size_t apdu_len, int err);
+
+struct nfc_target;
+
+struct nfc_ops {
+ int (*dev_up)(struct nfc_dev *dev);
+ int (*dev_down)(struct nfc_dev *dev);
+ int (*start_poll)(struct nfc_dev *dev,
+ u32 im_protocols, u32 tm_protocols);
+ void (*stop_poll)(struct nfc_dev *dev);
+ int (*dep_link_up)(struct nfc_dev *dev, struct nfc_target *target,
+ u8 comm_mode, u8 *gb, size_t gb_len);
+ int (*dep_link_down)(struct nfc_dev *dev);
+ int (*activate_target)(struct nfc_dev *dev, struct nfc_target *target,
+ u32 protocol);
+ void (*deactivate_target)(struct nfc_dev *dev,
+ struct nfc_target *target, u8 mode);
+ int (*im_transceive)(struct nfc_dev *dev, struct nfc_target *target,
+ struct sk_buff *skb, data_exchange_cb_t cb,
+ void *cb_context);
+ int (*tm_send)(struct nfc_dev *dev, struct sk_buff *skb);
+ int (*check_presence)(struct nfc_dev *dev, struct nfc_target *target);
+ int (*fw_download)(struct nfc_dev *dev, const char *firmware_name);
+
+ /* Secure Element API */
+ int (*discover_se)(struct nfc_dev *dev);
+ int (*enable_se)(struct nfc_dev *dev, u32 se_idx);
+ int (*disable_se)(struct nfc_dev *dev, u32 se_idx);
+ int (*se_io) (struct nfc_dev *dev, u32 se_idx,
+ u8 *apdu, size_t apdu_length,
+ se_io_cb_t cb, void *cb_context);
+};
+
+#define NFC_TARGET_IDX_ANY -1
+#define NFC_MAX_GT_LEN 48
+#define NFC_ATR_RES_GT_OFFSET 15
+#define NFC_ATR_REQ_GT_OFFSET 14
+
+/**
+ * struct nfc_target - NFC target descriptiom
+ *
+ * @sens_res: 2 bytes describing the target SENS_RES response, if the target
+ * is a type A one. The %sens_res most significant byte must be byte 2
+ * as described by the NFC Forum digital specification (i.e. the platform
+ * configuration one) while %sens_res least significant byte is byte 1.
+ */
+struct nfc_target {
+ u32 idx;
+ u32 supported_protocols;
+ u16 sens_res;
+ u8 sel_res;
+ u8 nfcid1_len;
+ u8 nfcid1[NFC_NFCID1_MAXSIZE];
+ u8 nfcid2_len;
+ u8 nfcid2[NFC_NFCID2_MAXSIZE];
+ u8 sensb_res_len;
+ u8 sensb_res[NFC_SENSB_RES_MAXSIZE];
+ u8 sensf_res_len;
+ u8 sensf_res[NFC_SENSF_RES_MAXSIZE];
+ u8 hci_reader_gate;
+ u8 logical_idx;
+ u8 is_iso15693;
+ u8 iso15693_dsfid;
+ u8 iso15693_uid[NFC_ISO15693_UID_MAXSIZE];
+};
+
+/**
+ * nfc_se - A structure for NFC accessible secure elements.
+ *
+ * @idx: The secure element index. User space will enable or
+ * disable a secure element by its index.
+ * @type: The secure element type. It can be SE_UICC or
+ * SE_EMBEDDED.
+ * @state: The secure element state, either enabled or disabled.
+ *
+ */
+struct nfc_se {
+ struct list_head list;
+ u32 idx;
+ u16 type;
+ u16 state;
+};
+
+/**
+ * nfc_evt_transaction - A struct for NFC secure element event transaction.
+ *
+ * @aid: The application identifier triggering the event
+ *
+ * @aid_len: The application identifier length [5:16]
+ *
+ * @params: The application parameters transmitted during the transaction
+ *
+ * @params_len: The applications parameters length [0:255]
+ *
+ */
+#define NFC_MIN_AID_LENGTH 5
+#define NFC_MAX_AID_LENGTH 16
+#define NFC_MAX_PARAMS_LENGTH 255
+
+#define NFC_EVT_TRANSACTION_AID_TAG 0x81
+#define NFC_EVT_TRANSACTION_PARAMS_TAG 0x82
+struct nfc_evt_transaction {
+ u32 aid_len;
+ u8 aid[NFC_MAX_AID_LENGTH];
+ u8 params_len;
+ u8 params[];
+} __packed;
+
+struct nfc_genl_data {
+ u32 poll_req_portid;
+ struct mutex genl_data_mutex;
+};
+
+struct nfc_vendor_cmd {
+ __u32 vendor_id;
+ __u32 subcmd;
+ int (*doit)(struct nfc_dev *dev, void *data, size_t data_len);
+};
+
+struct nfc_dev {
+ int idx;
+ u32 target_next_idx;
+ struct nfc_target *targets;
+ int n_targets;
+ int targets_generation;
+ struct device dev;
+ bool dev_up;
+ bool fw_download_in_progress;
+ u8 rf_mode;
+ bool polling;
+ struct nfc_target *active_target;
+ bool dep_link_up;
+ struct nfc_genl_data genl_data;
+ u32 supported_protocols;
+
+ struct list_head secure_elements;
+
+ int tx_headroom;
+ int tx_tailroom;
+
+ struct timer_list check_pres_timer;
+ struct work_struct check_pres_work;
+
+ bool shutting_down;
+
+ struct rfkill *rfkill;
+
+ const struct nfc_vendor_cmd *vendor_cmds;
+ int n_vendor_cmds;
+
+ const struct nfc_ops *ops;
+ struct genl_info *cur_cmd_info;
+};
+#define to_nfc_dev(_dev) container_of(_dev, struct nfc_dev, dev)
+
+extern struct class nfc_class;
+
+struct nfc_dev *nfc_allocate_device(const struct nfc_ops *ops,
+ u32 supported_protocols,
+ int tx_headroom,
+ int tx_tailroom);
+
+/**
+ * nfc_free_device - free nfc device
+ *
+ * @dev: The nfc device to free
+ */
+static inline void nfc_free_device(struct nfc_dev *dev)
+{
+ put_device(&dev->dev);
+}
+
+int nfc_register_device(struct nfc_dev *dev);
+
+void nfc_unregister_device(struct nfc_dev *dev);
+
+/**
+ * nfc_set_parent_dev - set the parent device
+ *
+ * @nfc_dev: The nfc device whose parent is being set
+ * @dev: The parent device
+ */
+static inline void nfc_set_parent_dev(struct nfc_dev *nfc_dev,
+ struct device *dev)
+{
+ nfc_dev->dev.parent = dev;
+}
+
+/**
+ * nfc_set_drvdata - set driver specifc data
+ *
+ * @dev: The nfc device
+ * @data: Pointer to driver specifc data
+ */
+static inline void nfc_set_drvdata(struct nfc_dev *dev, void *data)
+{
+ dev_set_drvdata(&dev->dev, data);
+}
+
+/**
+ * nfc_get_drvdata - get driver specifc data
+ *
+ * @dev: The nfc device
+ */
+static inline void *nfc_get_drvdata(const struct nfc_dev *dev)
+{
+ return dev_get_drvdata(&dev->dev);
+}
+
+/**
+ * nfc_device_name - get the nfc device name
+ *
+ * @dev: The nfc device whose name to return
+ */
+static inline const char *nfc_device_name(const struct nfc_dev *dev)
+{
+ return dev_name(&dev->dev);
+}
+
+struct sk_buff *nfc_alloc_send_skb(struct nfc_dev *dev, struct sock *sk,
+ unsigned int flags, unsigned int size,
+ unsigned int *err);
+struct sk_buff *nfc_alloc_recv_skb(unsigned int size, gfp_t gfp);
+
+int nfc_set_remote_general_bytes(struct nfc_dev *dev,
+ const u8 *gt, u8 gt_len);
+u8 *nfc_get_local_general_bytes(struct nfc_dev *dev, size_t *gb_len);
+
+int nfc_fw_download_done(struct nfc_dev *dev, const char *firmware_name,
+ u32 result);
+
+int nfc_targets_found(struct nfc_dev *dev,
+ struct nfc_target *targets, int ntargets);
+int nfc_target_lost(struct nfc_dev *dev, u32 target_idx);
+
+int nfc_dep_link_is_up(struct nfc_dev *dev, u32 target_idx,
+ u8 comm_mode, u8 rf_mode);
+
+int nfc_tm_activated(struct nfc_dev *dev, u32 protocol, u8 comm_mode,
+ const u8 *gb, size_t gb_len);
+int nfc_tm_deactivated(struct nfc_dev *dev);
+int nfc_tm_data_received(struct nfc_dev *dev, struct sk_buff *skb);
+
+void nfc_driver_failure(struct nfc_dev *dev, int err);
+
+int nfc_se_transaction(struct nfc_dev *dev, u8 se_idx,
+ struct nfc_evt_transaction *evt_transaction);
+int nfc_se_connectivity(struct nfc_dev *dev, u8 se_idx);
+int nfc_add_se(struct nfc_dev *dev, u32 se_idx, u16 type);
+int nfc_remove_se(struct nfc_dev *dev, u32 se_idx);
+struct nfc_se *nfc_find_se(struct nfc_dev *dev, u32 se_idx);
+
+void nfc_send_to_raw_sock(struct nfc_dev *dev, struct sk_buff *skb,
+ u8 payload_type, u8 direction);
+
+static inline int nfc_set_vendor_cmds(struct nfc_dev *dev,
+ const struct nfc_vendor_cmd *cmds,
+ int n_cmds)
+{
+ if (dev->vendor_cmds || dev->n_vendor_cmds)
+ return -EINVAL;
+
+ dev->vendor_cmds = cmds;
+ dev->n_vendor_cmds = n_cmds;
+
+ return 0;
+}
+
+struct sk_buff *__nfc_alloc_vendor_cmd_reply_skb(struct nfc_dev *dev,
+ enum nfc_attrs attr,
+ u32 oui, u32 subcmd,
+ int approxlen);
+int nfc_vendor_cmd_reply(struct sk_buff *skb);
+
+/**
+ * nfc_vendor_cmd_alloc_reply_skb - allocate vendor command reply
+ * @dev: nfc device
+ * @oui: vendor oui
+ * @approxlen: an upper bound of the length of the data that will
+ * be put into the skb
+ *
+ * This function allocates and pre-fills an skb for a reply to
+ * a vendor command. Since it is intended for a reply, calling
+ * it outside of a vendor command's doit() operation is invalid.
+ *
+ * The returned skb is pre-filled with some identifying data in
+ * a way that any data that is put into the skb (with skb_put(),
+ * nla_put() or similar) will end up being within the
+ * %NFC_ATTR_VENDOR_DATA attribute, so all that needs to be done
+ * with the skb is adding data for the corresponding userspace tool
+ * which can then read that data out of the vendor data attribute.
+ * You must not modify the skb in any other way.
+ *
+ * When done, call nfc_vendor_cmd_reply() with the skb and return
+ * its error code as the result of the doit() operation.
+ *
+ * Return: An allocated and pre-filled skb. %NULL if any errors happen.
+ */
+static inline struct sk_buff *
+nfc_vendor_cmd_alloc_reply_skb(struct nfc_dev *dev,
+ u32 oui, u32 subcmd, int approxlen)
+{
+ return __nfc_alloc_vendor_cmd_reply_skb(dev,
+ NFC_ATTR_VENDOR_DATA,
+ oui,
+ subcmd, approxlen);
+}
+
+#endif /* __NET_NFC_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-09 07:49:12 +0000