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