drivers/nfc/st-nci/st-nci.h

   1 /*
   2  * NCI based Driver for STMicroelectronics NFC Chip
   3  *
   4  * Copyright (C) 2014  STMicroelectronics SAS. All rights reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifndef __LOCAL_ST_NCI_H_
  20 #define __LOCAL_ST_NCI_H_
  21
  22 #include "ndlc.h"
  23
  24 /* Define private flags: */
  25 #define ST_NCI_RUNNING                  1
  26
  27 #define ST_NCI_CORE_PROP                0x01
  28 #define ST_NCI_SET_NFC_MODE             0x02
  29
  30 /*
  31  * ref ISO7816-3 chap 8.1. the initial character TS is followed by a
  32  * sequence of at most 32 characters.
  33  */
  34 #define ST_NCI_ESE_MAX_LENGTH  33
  35
  36 #define ST_NCI_DEVICE_MGNT_GATE         0x01
  37
  38 #define ST_NCI_VENDOR_OUI 0x0080E1 /* STMicroelectronics */
  39 #define ST_NCI_FACTORY_MODE 2
  40
  41 struct nci_mode_set_cmd {
  42         u8 cmd_type;
  43         u8 mode;
  44 } __packed;
  45
  46 struct nci_mode_set_rsp {
  47         u8 status;
  48 } __packed;
  49
  50 struct st_nci_se_status {
  51         bool is_ese_present;
  52         bool is_uicc_present;
  53 };
  54
  55 struct st_nci_se_info {
  56         struct st_nci_se_status *se_status;
  57         u8 atr[ST_NCI_ESE_MAX_LENGTH];
  58         struct completion req_completion;
  59
  60         struct timer_list bwi_timer;
  61         int wt_timeout; /* in msecs */
  62         bool bwi_active;
  63
  64         struct timer_list se_active_timer;
  65         bool se_active;
  66
  67         bool xch_error;
  68
  69         se_io_cb_t cb;
  70         void *cb_context;
  71 };
  72
  73 /**
  74  * enum nfc_vendor_cmds - supported nfc vendor commands
  75  *
  76  * @FACTORY_MODE: Allow to set the driver into a mode where no secure element
  77  *      are activated. It does not consider any NFC_ATTR_VENDOR_DATA.
  78  * @HCI_CLEAR_ALL_PIPES: Allow to execute a HCI clear all pipes command.
  79  *      It does not consider any NFC_ATTR_VENDOR_DATA.
  80  * @HCI_DM_PUT_DATA: Allow to configure specific CLF registry as for example
  81  *      RF trimmings or low level drivers configurations (I2C, SPI, SWP).
  82  * @HCI_DM_UPDATE_AID: Allow to configure an AID routing into the CLF routing
  83  *      table following RF technology, CLF mode or protocol.
  84  * @HCI_DM_GET_INFO: Allow to retrieve CLF information.
  85  * @HCI_DM_GET_DATA: Allow to retrieve CLF configurable data such as low
  86  *      level drivers configurations or RF trimmings.
  87  * @HCI_DM_DIRECT_LOAD: Allow to load a firmware into the CLF. A complete
  88  *      packet can be more than 8KB.
  89  * @HCI_DM_RESET: Allow to run a CLF reset in order to "commit" CLF
  90  *      configuration changes without CLF power off.
  91  * @HCI_GET_PARAM: Allow to retrieve an HCI CLF parameter (for example the
  92  *      white list).
  93  * @HCI_DM_FIELD_GENERATOR: Allow to generate different kind of RF
  94  *      technology. When using this command to anti-collision is done.
  95  * @LOOPBACK: Allow to echo a command and test the Dh to CLF connectivity.
  96  * @HCI_DM_VDC_MEASUREMENT_VALUE: Allow to measure the field applied on the
  97  *      CLF antenna. A value between 0 and 0x0f is returned. 0 is maximum.
  98  * @HCI_DM_FWUPD_START: Allow to put CLF into firmware update mode. It is a
  99  *      specific CLF command as there is no GPIO for this.
 100  * @HCI_DM_FWUPD_END:  Allow to complete firmware update.
 101  * @HCI_DM_VDC_VALUE_COMPARISON: Allow to compare the field applied on the
 102  *      CLF antenna to a reference value.
 103  * @MANUFACTURER_SPECIFIC: Allow to retrieve manufacturer specific data
 104  *      received during a NCI_CORE_INIT_CMD.
 105  */
 106 enum nfc_vendor_cmds {
 107         FACTORY_MODE,
 108         HCI_CLEAR_ALL_PIPES,
 109         HCI_DM_PUT_DATA,
 110         HCI_DM_UPDATE_AID,
 111         HCI_DM_GET_INFO,
 112         HCI_DM_GET_DATA,
 113         HCI_DM_DIRECT_LOAD,
 114         HCI_DM_RESET,
 115         HCI_GET_PARAM,
 116         HCI_DM_FIELD_GENERATOR,
 117         LOOPBACK,
 118         HCI_DM_FWUPD_START,
 119         HCI_DM_FWUPD_END,
 120         HCI_DM_VDC_MEASUREMENT_VALUE,
 121         HCI_DM_VDC_VALUE_COMPARISON,
 122         MANUFACTURER_SPECIFIC,
 123 };
 124
 125 struct st_nci_info {
 126         struct llt_ndlc *ndlc;
 127         unsigned long flags;
 128
 129         struct st_nci_se_info se_info;
 130 };
 131
 132 void st_nci_remove(struct nci_dev *ndev);
 133 int st_nci_probe(struct llt_ndlc *ndlc, int phy_headroom,
 134                  int phy_tailroom, struct st_nci_se_status *se_status);
 135
 136 int st_nci_se_init(struct nci_dev *ndev, struct st_nci_se_status *se_status);
 137 void st_nci_se_deinit(struct nci_dev *ndev);
 138
 139 int st_nci_discover_se(struct nci_dev *ndev);
 140 int st_nci_enable_se(struct nci_dev *ndev, u32 se_idx);
 141 int st_nci_disable_se(struct nci_dev *ndev, u32 se_idx);
 142 int st_nci_se_io(struct nci_dev *ndev, u32 se_idx,
 143                                 u8 *apdu, size_t apdu_length,
 144                                 se_io_cb_t cb, void *cb_context);
 145 int st_nci_hci_load_session(struct nci_dev *ndev);
 146 void st_nci_hci_event_received(struct nci_dev *ndev, u8 pipe,
 147                                         u8 event, struct sk_buff *skb);
 148 void st_nci_hci_cmd_received(struct nci_dev *ndev, u8 pipe, u8 cmd,
 149                                                 struct sk_buff *skb);
 150
 151 int st_nci_vendor_cmds_init(struct nci_dev *ndev);
 152
 153 #endif /* __LOCAL_ST_NCI_H_ */