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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* NCI based Driver for STMicroelectronics NFC Chip
*
* Copyright (C) 2014 STMicroelectronics SAS. All rights reserved.
*/
#ifndef __LOCAL_ST_NCI_H_
#define __LOCAL_ST_NCI_H_
#include "ndlc.h"
/* Define private flags: */
#define ST_NCI_RUNNING 1
#define ST_NCI_CORE_PROP 0x01
#define ST_NCI_SET_NFC_MODE 0x02
/*
* ref ISO7816-3 chap 8.1. the initial character TS is followed by a
* sequence of at most 32 characters.
*/
#define ST_NCI_ESE_MAX_LENGTH 33
#define ST_NCI_DEVICE_MGNT_GATE 0x01
#define ST_NCI_VENDOR_OUI 0x0080E1 /* STMicroelectronics */
#define ST_NCI_FACTORY_MODE 2
struct nci_mode_set_cmd {
u8 cmd_type;
u8 mode;
} __packed;
struct nci_mode_set_rsp {
u8 status;
} __packed;
struct st_nci_se_status {
bool is_ese_present;
bool is_uicc_present;
};
struct st_nci_se_info {
struct st_nci_se_status *se_status;
u8 atr[ST_NCI_ESE_MAX_LENGTH];
struct completion req_completion;
struct timer_list bwi_timer;
int wt_timeout; /* in msecs */
bool bwi_active;
struct timer_list se_active_timer;
bool se_active;
bool xch_error;
se_io_cb_t cb;
void *cb_context;
};
/**
* enum nfc_vendor_cmds - supported nfc vendor commands
*
* @FACTORY_MODE: Allow to set the driver into a mode where no secure element
* are activated. It does not consider any NFC_ATTR_VENDOR_DATA.
* @HCI_CLEAR_ALL_PIPES: Allow to execute a HCI clear all pipes command.
* It does not consider any NFC_ATTR_VENDOR_DATA.
* @HCI_DM_PUT_DATA: Allow to configure specific CLF registry as for example
* RF trimmings or low level drivers configurations (I2C, SPI, SWP).
* @HCI_DM_UPDATE_AID: Allow to configure an AID routing into the CLF routing
* table following RF technology, CLF mode or protocol.
* @HCI_DM_GET_INFO: Allow to retrieve CLF information.
* @HCI_DM_GET_DATA: Allow to retrieve CLF configurable data such as low
* level drivers configurations or RF trimmings.
* @HCI_DM_DIRECT_LOAD: Allow to load a firmware into the CLF. A complete
* packet can be more than 8KB.
* @HCI_DM_RESET: Allow to run a CLF reset in order to "commit" CLF
* configuration changes without CLF power off.
* @HCI_GET_PARAM: Allow to retrieve an HCI CLF parameter (for example the
* white list).
* @HCI_DM_FIELD_GENERATOR: Allow to generate different kind of RF
* technology. When using this command to anti-collision is done.
* @LOOPBACK: Allow to echo a command and test the Dh to CLF connectivity.
* @HCI_DM_VDC_MEASUREMENT_VALUE: Allow to measure the field applied on the
* CLF antenna. A value between 0 and 0x0f is returned. 0 is maximum.
* @HCI_DM_FWUPD_START: Allow to put CLF into firmware update mode. It is a
* specific CLF command as there is no GPIO for this.
* @HCI_DM_FWUPD_END: Allow to complete firmware update.
* @HCI_DM_VDC_VALUE_COMPARISON: Allow to compare the field applied on the
* CLF antenna to a reference value.
* @MANUFACTURER_SPECIFIC: Allow to retrieve manufacturer specific data
* received during a NCI_CORE_INIT_CMD.
*/
enum nfc_vendor_cmds {
FACTORY_MODE,
HCI_CLEAR_ALL_PIPES,
HCI_DM_PUT_DATA,
HCI_DM_UPDATE_AID,
HCI_DM_GET_INFO,
HCI_DM_GET_DATA,
HCI_DM_DIRECT_LOAD,
HCI_DM_RESET,
HCI_GET_PARAM,
HCI_DM_FIELD_GENERATOR,
LOOPBACK,
HCI_DM_FWUPD_START,
HCI_DM_FWUPD_END,
HCI_DM_VDC_MEASUREMENT_VALUE,
HCI_DM_VDC_VALUE_COMPARISON,
MANUFACTURER_SPECIFIC,
};
struct st_nci_info {
struct llt_ndlc *ndlc;
unsigned long flags;
struct st_nci_se_info se_info;
};
void st_nci_remove(struct nci_dev *ndev);
int st_nci_probe(struct llt_ndlc *ndlc, int phy_headroom,
int phy_tailroom, struct st_nci_se_status *se_status);
int st_nci_se_init(struct nci_dev *ndev, struct st_nci_se_status *se_status);
void st_nci_se_deinit(struct nci_dev *ndev);
int st_nci_discover_se(struct nci_dev *ndev);
int st_nci_enable_se(struct nci_dev *ndev, u32 se_idx);
int st_nci_disable_se(struct nci_dev *ndev, u32 se_idx);
int st_nci_se_io(struct nci_dev *ndev, u32 se_idx,
u8 *apdu, size_t apdu_length,
se_io_cb_t cb, void *cb_context);
int st_nci_hci_load_session(struct nci_dev *ndev);
void st_nci_hci_event_received(struct nci_dev *ndev, u8 pipe,
u8 event, struct sk_buff *skb);
void st_nci_hci_cmd_received(struct nci_dev *ndev, u8 pipe, u8 cmd,
struct sk_buff *skb);
int st_nci_vendor_cmds_init(struct nci_dev *ndev);
#endif /* __LOCAL_ST_NCI_H_ */
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