2130fb97fe
st21nfca has 1 physical SWP line and can support up to 2 secure elements (UICC & eSE) thanks to an external switch managed with a gpio. The platform integrator needs to specify thanks to 2 initialization properties, uicc-present and ese-present, if it is suppose to have uicc and/or ese. Of course if the platform does not have an external switch, only one kind of secure element can be supported. Those parameters are under platform integrator responsibilities. During initialization, the white_list will be set according to those parameters. The discovery_se function will assume a secure element is physically present according to uicc-present and ese-present values and will add it to the secure element list. On ese activation, the atr is retrieved to calculate a command exchange timeout based on the first atr(TB) value. The se_io will allow to transfer data over SWP. 2 kind of events may appear after a data is sent over: - ST21NFCA_EVT_TRANSMIT_DATA when receiving an apdu answer - ST21NFCA_EVT_WTX_REQUEST when the secure element needs more time than expected to compute a command. If this timeout expired, a first recovery tentative consist to send a simple software reset proprietary command. If this tentative still fail, a second recovery tentative consist to send a hardware reset proprietary command. This function is only relevant for eSE like secure element. This patch also change the way a pipe is referenced. There can be different pipe connected to the same gate with different host destination (ex: CONNECTIVITY). In order to keep host information every pipe are reference with a tuple (gate, host). In order to reduce changes, we are keeping unchanged the way a gate is addressed on the Terminal Host. However, this is working because we consider the apdu reader gate is only present on the eSE slot also the connectivity gate cannot give a reliable value; it will give the latest stored pipe value. Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
100 lines
2.7 KiB
C
100 lines
2.7 KiB
C
/*
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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_ST21NFCA_H_
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#define __LOCAL_ST21NFCA_H_
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#include <net/nfc/hci.h>
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#include "st21nfca_dep.h"
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#include "st21nfca_se.h"
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#define HCI_MODE 0
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/* framing in HCI mode */
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#define ST21NFCA_SOF_EOF_LEN 2
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/* Almost every time value is 0 */
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#define ST21NFCA_HCI_LLC_LEN 1
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/* Size in worst case :
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* In normal case CRC len = 2 but byte stuffing
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* may appear in case one CRC byte = ST21NFCA_SOF_EOF
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*/
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#define ST21NFCA_HCI_LLC_CRC 4
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#define ST21NFCA_HCI_LLC_LEN_CRC (ST21NFCA_SOF_EOF_LEN + \
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ST21NFCA_HCI_LLC_LEN + \
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ST21NFCA_HCI_LLC_CRC)
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#define ST21NFCA_HCI_LLC_MIN_SIZE (1 + ST21NFCA_HCI_LLC_LEN_CRC)
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/* Worst case when adding byte stuffing between each byte */
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#define ST21NFCA_HCI_LLC_MAX_PAYLOAD 29
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#define ST21NFCA_HCI_LLC_MAX_SIZE (ST21NFCA_HCI_LLC_LEN_CRC + 1 + \
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ST21NFCA_HCI_LLC_MAX_PAYLOAD)
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#define DRIVER_DESC "HCI NFC driver for ST21NFCA"
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#define ST21NFCA_HCI_MODE 0
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#define ST21NFCA_NUM_DEVICES 256
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struct st21nfca_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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int st21nfca_hci_probe(void *phy_id, struct nfc_phy_ops *phy_ops,
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char *llc_name, int phy_headroom, int phy_tailroom,
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int phy_payload, struct nfc_hci_dev **hdev,
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struct st21nfca_se_status *se_status);
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void st21nfca_hci_remove(struct nfc_hci_dev *hdev);
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enum st21nfca_state {
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ST21NFCA_ST_COLD,
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ST21NFCA_ST_READY,
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};
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struct st21nfca_hci_info {
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struct nfc_phy_ops *phy_ops;
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void *phy_id;
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struct nfc_hci_dev *hdev;
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struct st21nfca_se_status *se_status;
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enum st21nfca_state state;
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struct mutex info_lock;
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int async_cb_type;
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data_exchange_cb_t async_cb;
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void *async_cb_context;
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struct st21nfca_dep_info dep_info;
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struct st21nfca_se_info se_info;
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};
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/* Reader RF commands */
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#define ST21NFCA_WR_XCHG_DATA 0x10
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#define ST21NFCA_DEVICE_MGNT_GATE 0x01
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#define ST21NFCA_RF_READER_F_GATE 0x14
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#define ST21NFCA_RF_CARD_F_GATE 0x24
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#define ST21NFCA_APDU_READER_GATE 0xf0
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#define ST21NFCA_CONNECTIVITY_GATE 0x41
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#endif /* __LOCAL_ST21NFCA_H_ */
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