479 lines
11 KiB
C
479 lines
11 KiB
C
/*
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* Proprietary commands extension for STMicroelectronics NFC NCI Chip
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*
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* Copyright (C) 2014-2015 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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#include <net/genetlink.h>
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#include <linux/module.h>
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#include <linux/nfc.h>
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#include <linux/delay.h>
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#include <net/nfc/nci_core.h>
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#include "st-nci.h"
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#define ST_NCI_HCI_DM_GETDATA 0x10
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#define ST_NCI_HCI_DM_PUTDATA 0x11
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#define ST_NCI_HCI_DM_LOAD 0x12
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#define ST_NCI_HCI_DM_GETINFO 0x13
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#define ST_NCI_HCI_DM_FWUPD_START 0x14
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#define ST_NCI_HCI_DM_FWUPD_STOP 0x15
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#define ST_NCI_HCI_DM_UPDATE_AID 0x20
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#define ST_NCI_HCI_DM_RESET 0x3e
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#define ST_NCI_HCI_DM_FIELD_GENERATOR 0x32
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#define ST_NCI_HCI_DM_VDC_MEASUREMENT_VALUE 0x33
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#define ST_NCI_HCI_DM_VDC_VALUE_COMPARISON 0x34
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#define ST_NCI_FACTORY_MODE_ON 1
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#define ST_NCI_FACTORY_MODE_OFF 0
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#define ST_NCI_EVT_POST_DATA 0x02
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struct get_param_data {
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u8 gate;
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u8 data;
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} __packed;
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static int st_nci_factory_mode(struct nfc_dev *dev, void *data,
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size_t data_len)
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{
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struct nci_dev *ndev = nfc_get_drvdata(dev);
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struct st_nci_info *info = nci_get_drvdata(ndev);
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if (data_len != 1)
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return -EINVAL;
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pr_debug("factory mode: %x\n", ((u8 *)data)[0]);
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switch (((u8 *)data)[0]) {
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case ST_NCI_FACTORY_MODE_ON:
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test_and_set_bit(ST_NCI_FACTORY_MODE, &info->flags);
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break;
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case ST_NCI_FACTORY_MODE_OFF:
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clear_bit(ST_NCI_FACTORY_MODE, &info->flags);
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static int st_nci_hci_clear_all_pipes(struct nfc_dev *dev, void *data,
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size_t data_len)
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{
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struct nci_dev *ndev = nfc_get_drvdata(dev);
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return nci_hci_clear_all_pipes(ndev);
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}
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static int st_nci_hci_dm_put_data(struct nfc_dev *dev, void *data,
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size_t data_len)
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{
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struct nci_dev *ndev = nfc_get_drvdata(dev);
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return nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE,
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ST_NCI_HCI_DM_PUTDATA, data,
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data_len, NULL);
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}
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static int st_nci_hci_dm_update_aid(struct nfc_dev *dev, void *data,
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size_t data_len)
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{
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struct nci_dev *ndev = nfc_get_drvdata(dev);
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return nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE,
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ST_NCI_HCI_DM_UPDATE_AID, data, data_len, NULL);
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}
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static int st_nci_hci_dm_get_info(struct nfc_dev *dev, void *data,
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size_t data_len)
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{
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int r;
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struct sk_buff *msg, *skb;
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struct nci_dev *ndev = nfc_get_drvdata(dev);
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r = nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, ST_NCI_HCI_DM_GETINFO,
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data, data_len, &skb);
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if (r)
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goto exit;
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msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI,
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HCI_DM_GET_INFO, skb->len);
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if (!msg) {
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r = -ENOMEM;
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goto free_skb;
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}
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if (nla_put(msg, NFC_ATTR_VENDOR_DATA, skb->len, skb->data)) {
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kfree_skb(msg);
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r = -ENOBUFS;
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goto free_skb;
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}
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r = nfc_vendor_cmd_reply(msg);
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free_skb:
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kfree_skb(skb);
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exit:
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return r;
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}
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static int st_nci_hci_dm_get_data(struct nfc_dev *dev, void *data,
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size_t data_len)
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{
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int r;
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struct sk_buff *msg, *skb;
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struct nci_dev *ndev = nfc_get_drvdata(dev);
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r = nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, ST_NCI_HCI_DM_GETDATA,
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data, data_len, &skb);
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if (r)
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goto exit;
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msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI,
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HCI_DM_GET_DATA, skb->len);
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if (!msg) {
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r = -ENOMEM;
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goto free_skb;
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}
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if (nla_put(msg, NFC_ATTR_VENDOR_DATA, skb->len, skb->data)) {
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kfree_skb(msg);
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r = -ENOBUFS;
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goto free_skb;
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}
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r = nfc_vendor_cmd_reply(msg);
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free_skb:
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kfree_skb(skb);
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exit:
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return r;
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}
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static int st_nci_hci_dm_fwupd_start(struct nfc_dev *dev, void *data,
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size_t data_len)
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{
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int r;
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struct nci_dev *ndev = nfc_get_drvdata(dev);
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dev->fw_download_in_progress = true;
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r = nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE,
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ST_NCI_HCI_DM_FWUPD_START, data, data_len, NULL);
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if (r)
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dev->fw_download_in_progress = false;
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return r;
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}
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static int st_nci_hci_dm_fwupd_end(struct nfc_dev *dev, void *data,
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size_t data_len)
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{
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struct nci_dev *ndev = nfc_get_drvdata(dev);
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return nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE,
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ST_NCI_HCI_DM_FWUPD_STOP, data, data_len, NULL);
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}
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static int st_nci_hci_dm_direct_load(struct nfc_dev *dev, void *data,
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size_t data_len)
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{
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struct nci_dev *ndev = nfc_get_drvdata(dev);
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if (dev->fw_download_in_progress) {
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dev->fw_download_in_progress = false;
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return nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE,
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ST_NCI_HCI_DM_LOAD, data, data_len, NULL);
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}
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return -EPROTO;
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}
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static int st_nci_hci_dm_reset(struct nfc_dev *dev, void *data,
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size_t data_len)
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{
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struct nci_dev *ndev = nfc_get_drvdata(dev);
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nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE,
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ST_NCI_HCI_DM_RESET, data, data_len, NULL);
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msleep(200);
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return 0;
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}
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static int st_nci_hci_get_param(struct nfc_dev *dev, void *data,
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size_t data_len)
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{
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int r;
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struct sk_buff *msg, *skb;
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struct nci_dev *ndev = nfc_get_drvdata(dev);
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struct get_param_data *param = (struct get_param_data *)data;
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if (data_len < sizeof(struct get_param_data))
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return -EPROTO;
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r = nci_hci_get_param(ndev, param->gate, param->data, &skb);
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if (r)
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goto exit;
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msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI,
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HCI_GET_PARAM, skb->len);
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if (!msg) {
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r = -ENOMEM;
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goto free_skb;
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}
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if (nla_put(msg, NFC_ATTR_VENDOR_DATA, skb->len, skb->data)) {
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kfree_skb(msg);
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r = -ENOBUFS;
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goto free_skb;
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}
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r = nfc_vendor_cmd_reply(msg);
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free_skb:
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kfree_skb(skb);
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exit:
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return r;
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}
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static int st_nci_hci_dm_field_generator(struct nfc_dev *dev, void *data,
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size_t data_len)
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{
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struct nci_dev *ndev = nfc_get_drvdata(dev);
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return nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE,
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ST_NCI_HCI_DM_FIELD_GENERATOR, data, data_len, NULL);
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}
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static int st_nci_hci_dm_vdc_measurement_value(struct nfc_dev *dev, void *data,
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size_t data_len)
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{
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int r;
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struct sk_buff *msg, *skb;
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struct nci_dev *ndev = nfc_get_drvdata(dev);
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if (data_len != 4)
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return -EPROTO;
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r = nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE,
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ST_NCI_HCI_DM_VDC_MEASUREMENT_VALUE,
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data, data_len, &skb);
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if (r)
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goto exit;
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msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI,
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HCI_DM_VDC_MEASUREMENT_VALUE, skb->len);
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if (!msg) {
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r = -ENOMEM;
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goto free_skb;
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}
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if (nla_put(msg, NFC_ATTR_VENDOR_DATA, skb->len, skb->data)) {
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kfree_skb(msg);
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r = -ENOBUFS;
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goto free_skb;
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}
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r = nfc_vendor_cmd_reply(msg);
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free_skb:
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kfree_skb(skb);
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exit:
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return r;
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}
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static int st_nci_hci_dm_vdc_value_comparison(struct nfc_dev *dev, void *data,
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size_t data_len)
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{
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int r;
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struct sk_buff *msg, *skb;
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struct nci_dev *ndev = nfc_get_drvdata(dev);
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if (data_len != 2)
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return -EPROTO;
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r = nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE,
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ST_NCI_HCI_DM_VDC_VALUE_COMPARISON,
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data, data_len, &skb);
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if (r)
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goto exit;
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msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI,
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HCI_DM_VDC_VALUE_COMPARISON, skb->len);
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if (!msg) {
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r = -ENOMEM;
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goto free_skb;
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}
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if (nla_put(msg, NFC_ATTR_VENDOR_DATA, skb->len, skb->data)) {
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kfree_skb(msg);
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r = -ENOBUFS;
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goto free_skb;
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}
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r = nfc_vendor_cmd_reply(msg);
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free_skb:
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kfree_skb(skb);
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exit:
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return r;
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}
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static int st_nci_loopback(struct nfc_dev *dev, void *data,
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size_t data_len)
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{
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int r;
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struct sk_buff *msg, *skb;
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struct nci_dev *ndev = nfc_get_drvdata(dev);
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if (data_len <= 0)
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return -EPROTO;
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r = nci_nfcc_loopback(ndev, data, data_len, &skb);
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if (r < 0)
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return r;
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msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI,
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LOOPBACK, skb->len);
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if (!msg) {
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r = -ENOMEM;
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goto free_skb;
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}
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if (nla_put(msg, NFC_ATTR_VENDOR_DATA, skb->len, skb->data)) {
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kfree_skb(msg);
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r = -ENOBUFS;
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goto free_skb;
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}
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r = nfc_vendor_cmd_reply(msg);
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free_skb:
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kfree_skb(skb);
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return r;
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}
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static int st_nci_manufacturer_specific(struct nfc_dev *dev, void *data,
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size_t data_len)
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{
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struct sk_buff *msg;
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struct nci_dev *ndev = nfc_get_drvdata(dev);
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msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI,
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MANUFACTURER_SPECIFIC,
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sizeof(ndev->manufact_specific_info));
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if (!msg)
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return -ENOMEM;
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if (nla_put(msg, NFC_ATTR_VENDOR_DATA, sizeof(ndev->manufact_specific_info),
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&ndev->manufact_specific_info)) {
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kfree_skb(msg);
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return -ENOBUFS;
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}
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return nfc_vendor_cmd_reply(msg);
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}
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static struct nfc_vendor_cmd st_nci_vendor_cmds[] = {
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{
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.vendor_id = ST_NCI_VENDOR_OUI,
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.subcmd = FACTORY_MODE,
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.doit = st_nci_factory_mode,
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},
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{
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.vendor_id = ST_NCI_VENDOR_OUI,
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.subcmd = HCI_CLEAR_ALL_PIPES,
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.doit = st_nci_hci_clear_all_pipes,
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},
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{
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.vendor_id = ST_NCI_VENDOR_OUI,
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.subcmd = HCI_DM_PUT_DATA,
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.doit = st_nci_hci_dm_put_data,
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},
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{
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.vendor_id = ST_NCI_VENDOR_OUI,
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.subcmd = HCI_DM_UPDATE_AID,
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.doit = st_nci_hci_dm_update_aid,
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},
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{
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.vendor_id = ST_NCI_VENDOR_OUI,
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.subcmd = HCI_DM_GET_INFO,
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.doit = st_nci_hci_dm_get_info,
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},
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{
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.vendor_id = ST_NCI_VENDOR_OUI,
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.subcmd = HCI_DM_GET_DATA,
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.doit = st_nci_hci_dm_get_data,
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},
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{
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.vendor_id = ST_NCI_VENDOR_OUI,
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.subcmd = HCI_DM_DIRECT_LOAD,
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.doit = st_nci_hci_dm_direct_load,
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},
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{
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.vendor_id = ST_NCI_VENDOR_OUI,
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.subcmd = HCI_DM_RESET,
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.doit = st_nci_hci_dm_reset,
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},
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{
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.vendor_id = ST_NCI_VENDOR_OUI,
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.subcmd = HCI_GET_PARAM,
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.doit = st_nci_hci_get_param,
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},
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{
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.vendor_id = ST_NCI_VENDOR_OUI,
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.subcmd = HCI_DM_FIELD_GENERATOR,
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.doit = st_nci_hci_dm_field_generator,
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},
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{
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.vendor_id = ST_NCI_VENDOR_OUI,
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.subcmd = HCI_DM_FWUPD_START,
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.doit = st_nci_hci_dm_fwupd_start,
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},
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{
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.vendor_id = ST_NCI_VENDOR_OUI,
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.subcmd = HCI_DM_FWUPD_END,
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.doit = st_nci_hci_dm_fwupd_end,
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},
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{
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.vendor_id = ST_NCI_VENDOR_OUI,
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.subcmd = LOOPBACK,
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.doit = st_nci_loopback,
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},
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{
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.vendor_id = ST_NCI_VENDOR_OUI,
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.subcmd = HCI_DM_VDC_MEASUREMENT_VALUE,
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.doit = st_nci_hci_dm_vdc_measurement_value,
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},
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{
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.vendor_id = ST_NCI_VENDOR_OUI,
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.subcmd = HCI_DM_VDC_VALUE_COMPARISON,
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.doit = st_nci_hci_dm_vdc_value_comparison,
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},
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{
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.vendor_id = ST_NCI_VENDOR_OUI,
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.subcmd = MANUFACTURER_SPECIFIC,
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.doit = st_nci_manufacturer_specific,
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},
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};
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int st_nci_vendor_cmds_init(struct nci_dev *ndev)
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{
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return nfc_set_vendor_cmds(ndev->nfc_dev, st_nci_vendor_cmds,
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sizeof(st_nci_vendor_cmds));
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}
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EXPORT_SYMBOL(st_nci_vendor_cmds_init);
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