// SPDX-License-Identifier: GPL-2.0-only /* * Proprietary commands extension for STMicroelectronics NFC NCI Chip * * Copyright (C) 2014-2015 STMicroelectronics SAS. All rights reserved. */ #include <net/genetlink.h> #include <linux/module.h> #include <linux/nfc.h> #include <linux/delay.h> #include <net/nfc/nci_core.h> #include "st-nci.h" #define ST_NCI_HCI_DM_GETDATA 0x10 #define ST_NCI_HCI_DM_PUTDATA 0x11 #define ST_NCI_HCI_DM_LOAD 0x12 #define ST_NCI_HCI_DM_GETINFO 0x13 #define ST_NCI_HCI_DM_FWUPD_START 0x14 #define ST_NCI_HCI_DM_FWUPD_STOP 0x15 #define ST_NCI_HCI_DM_UPDATE_AID 0x20 #define ST_NCI_HCI_DM_RESET 0x3e #define ST_NCI_HCI_DM_FIELD_GENERATOR 0x32 #define ST_NCI_HCI_DM_VDC_MEASUREMENT_VALUE 0x33 #define ST_NCI_HCI_DM_VDC_VALUE_COMPARISON 0x34 #define ST_NCI_FACTORY_MODE_ON 1 #define ST_NCI_FACTORY_MODE_OFF 0 #define ST_NCI_EVT_POST_DATA 0x02 struct get_param_data { u8 gate; u8 data; } __packed; static int st_nci_factory_mode(struct nfc_dev *dev, void *data, size_t data_len) { struct nci_dev *ndev = nfc_get_drvdata(dev); struct st_nci_info *info = nci_get_drvdata(ndev); if (data_len != 1) return -EINVAL; pr_debug("factory mode: %x\n", ((u8 *)data)[0]); switch (((u8 *)data)[0]) { case ST_NCI_FACTORY_MODE_ON: test_and_set_bit(ST_NCI_FACTORY_MODE, &info->flags); break; case ST_NCI_FACTORY_MODE_OFF: clear_bit(ST_NCI_FACTORY_MODE, &info->flags); break; default: return -EINVAL; } return 0; } static int st_nci_hci_clear_all_pipes(struct nfc_dev *dev, void *data, size_t data_len) { struct nci_dev *ndev = nfc_get_drvdata(dev); return nci_hci_clear_all_pipes(ndev); } static int st_nci_hci_dm_put_data(struct nfc_dev *dev, void *data, size_t data_len) { struct nci_dev *ndev = nfc_get_drvdata(dev); return nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, ST_NCI_HCI_DM_PUTDATA, data, data_len, NULL); } static int st_nci_hci_dm_update_aid(struct nfc_dev *dev, void *data, size_t data_len) { struct nci_dev *ndev = nfc_get_drvdata(dev); return nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, ST_NCI_HCI_DM_UPDATE_AID, data, data_len, NULL); } static int st_nci_hci_dm_get_info(struct nfc_dev *dev, void *data, size_t data_len) { int r; struct sk_buff *msg, *skb; struct nci_dev *ndev = nfc_get_drvdata(dev); r = nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, ST_NCI_HCI_DM_GETINFO, data, data_len, &skb); if (r) goto exit; msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI, HCI_DM_GET_INFO, skb->len); if (!msg) { r = -ENOMEM; goto free_skb; } if (nla_put(msg, NFC_ATTR_VENDOR_DATA, skb->len, skb->data)) { kfree_skb(msg); r = -ENOBUFS; goto free_skb; } r = nfc_vendor_cmd_reply(msg); free_skb: kfree_skb(skb); exit: return r; } static int st_nci_hci_dm_get_data(struct nfc_dev *dev, void *data, size_t data_len) { int r; struct sk_buff *msg, *skb; struct nci_dev *ndev = nfc_get_drvdata(dev); r = nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, ST_NCI_HCI_DM_GETDATA, data, data_len, &skb); if (r) goto exit; msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI, HCI_DM_GET_DATA, skb->len); if (!msg) { r = -ENOMEM; goto free_skb; } if (nla_put(msg, NFC_ATTR_VENDOR_DATA, skb->len, skb->data)) { kfree_skb(msg); r = -ENOBUFS; goto free_skb; } r = nfc_vendor_cmd_reply(msg); free_skb: kfree_skb(skb); exit: return r; } static int st_nci_hci_dm_fwupd_start(struct nfc_dev *dev, void *data, size_t data_len) { int r; struct nci_dev *ndev = nfc_get_drvdata(dev); dev->fw_download_in_progress = true; r = nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, ST_NCI_HCI_DM_FWUPD_START, data, data_len, NULL); if (r) dev->fw_download_in_progress = false; return r; } static int st_nci_hci_dm_fwupd_end(struct nfc_dev *dev, void *data, size_t data_len) { struct nci_dev *ndev = nfc_get_drvdata(dev); return nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, ST_NCI_HCI_DM_FWUPD_STOP, data, data_len, NULL); } static int st_nci_hci_dm_direct_load(struct nfc_dev *dev, void *data, size_t data_len) { struct nci_dev *ndev = nfc_get_drvdata(dev); if (dev->fw_download_in_progress) { dev->fw_download_in_progress = false; return nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, ST_NCI_HCI_DM_LOAD, data, data_len, NULL); } return -EPROTO; } static int st_nci_hci_dm_reset(struct nfc_dev *dev, void *data, size_t data_len) { struct nci_dev *ndev = nfc_get_drvdata(dev); nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, ST_NCI_HCI_DM_RESET, data, data_len, NULL); msleep(200); return 0; } static int st_nci_hci_get_param(struct nfc_dev *dev, void *data, size_t data_len) { int r; struct sk_buff *msg, *skb; struct nci_dev *ndev = nfc_get_drvdata(dev); struct get_param_data *param = (struct get_param_data *)data; if (data_len < sizeof(struct get_param_data)) return -EPROTO; r = nci_hci_get_param(ndev, param->gate, param->data, &skb); if (r) goto exit; msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI, HCI_GET_PARAM, skb->len); if (!msg) { r = -ENOMEM; goto free_skb; } if (nla_put(msg, NFC_ATTR_VENDOR_DATA, skb->len, skb->data)) { kfree_skb(msg); r = -ENOBUFS; goto free_skb; } r = nfc_vendor_cmd_reply(msg); free_skb: kfree_skb(skb); exit: return r; } static int st_nci_hci_dm_field_generator(struct nfc_dev *dev, void *data, size_t data_len) { struct nci_dev *ndev = nfc_get_drvdata(dev); return nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, ST_NCI_HCI_DM_FIELD_GENERATOR, data, data_len, NULL); } static int st_nci_hci_dm_vdc_measurement_value(struct nfc_dev *dev, void *data, size_t data_len) { int r; struct sk_buff *msg, *skb; struct nci_dev *ndev = nfc_get_drvdata(dev); if (data_len != 4) return -EPROTO; r = nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, ST_NCI_HCI_DM_VDC_MEASUREMENT_VALUE, data, data_len, &skb); if (r) goto exit; msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI, HCI_DM_VDC_MEASUREMENT_VALUE, skb->len); if (!msg) { r = -ENOMEM; goto free_skb; } if (nla_put(msg, NFC_ATTR_VENDOR_DATA, skb->len, skb->data)) { kfree_skb(msg); r = -ENOBUFS; goto free_skb; } r = nfc_vendor_cmd_reply(msg); free_skb: kfree_skb(skb); exit: return r; } static int st_nci_hci_dm_vdc_value_comparison(struct nfc_dev *dev, void *data, size_t data_len) { int r; struct sk_buff *msg, *skb; struct nci_dev *ndev = nfc_get_drvdata(dev); if (data_len != 2) return -EPROTO; r = nci_hci_send_cmd(ndev, ST_NCI_DEVICE_MGNT_GATE, ST_NCI_HCI_DM_VDC_VALUE_COMPARISON, data, data_len, &skb); if (r) goto exit; msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI, HCI_DM_VDC_VALUE_COMPARISON, skb->len); if (!msg) { r = -ENOMEM; goto free_skb; } if (nla_put(msg, NFC_ATTR_VENDOR_DATA, skb->len, skb->data)) { kfree_skb(msg); r = -ENOBUFS; goto free_skb; } r = nfc_vendor_cmd_reply(msg); free_skb: kfree_skb(skb); exit: return r; } static int st_nci_loopback(struct nfc_dev *dev, void *data, size_t data_len) { int r; struct sk_buff *msg, *skb; struct nci_dev *ndev = nfc_get_drvdata(dev); if (data_len <= 0) return -EPROTO; r = nci_nfcc_loopback(ndev, data, data_len, &skb); if (r < 0) return r; msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI, LOOPBACK, skb->len); if (!msg) { r = -ENOMEM; goto free_skb; } if (nla_put(msg, NFC_ATTR_VENDOR_DATA, skb->len, skb->data)) { kfree_skb(msg); r = -ENOBUFS; goto free_skb; } r = nfc_vendor_cmd_reply(msg); free_skb: kfree_skb(skb); return r; } static int st_nci_manufacturer_specific(struct nfc_dev *dev, void *data, size_t data_len) { struct sk_buff *msg; struct nci_dev *ndev = nfc_get_drvdata(dev); msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST_NCI_VENDOR_OUI, MANUFACTURER_SPECIFIC, sizeof(ndev->manufact_specific_info)); if (!msg) return -ENOMEM; if (nla_put(msg, NFC_ATTR_VENDOR_DATA, sizeof(ndev->manufact_specific_info), &ndev->manufact_specific_info)) { kfree_skb(msg); return -ENOBUFS; } return nfc_vendor_cmd_reply(msg); } static struct nfc_vendor_cmd st_nci_vendor_cmds[] = { { .vendor_id = ST_NCI_VENDOR_OUI, .subcmd = FACTORY_MODE, .doit = st_nci_factory_mode, }, { .vendor_id = ST_NCI_VENDOR_OUI, .subcmd = HCI_CLEAR_ALL_PIPES, .doit = st_nci_hci_clear_all_pipes, }, { .vendor_id = ST_NCI_VENDOR_OUI, .subcmd = HCI_DM_PUT_DATA, .doit = st_nci_hci_dm_put_data, }, { .vendor_id = ST_NCI_VENDOR_OUI, .subcmd = HCI_DM_UPDATE_AID, .doit = st_nci_hci_dm_update_aid, }, { .vendor_id = ST_NCI_VENDOR_OUI, .subcmd = HCI_DM_GET_INFO, .doit = st_nci_hci_dm_get_info, }, { .vendor_id = ST_NCI_VENDOR_OUI, .subcmd = HCI_DM_GET_DATA, .doit = st_nci_hci_dm_get_data, }, { .vendor_id = ST_NCI_VENDOR_OUI, .subcmd = HCI_DM_DIRECT_LOAD, .doit = st_nci_hci_dm_direct_load, }, { .vendor_id = ST_NCI_VENDOR_OUI, .subcmd = HCI_DM_RESET, .doit = st_nci_hci_dm_reset, }, { .vendor_id = ST_NCI_VENDOR_OUI, .subcmd = HCI_GET_PARAM, .doit = st_nci_hci_get_param, }, { .vendor_id = ST_NCI_VENDOR_OUI, .subcmd = HCI_DM_FIELD_GENERATOR, .doit = st_nci_hci_dm_field_generator, }, { .vendor_id = ST_NCI_VENDOR_OUI, .subcmd = HCI_DM_FWUPD_START, .doit = st_nci_hci_dm_fwupd_start, }, { .vendor_id = ST_NCI_VENDOR_OUI, .subcmd = HCI_DM_FWUPD_END, .doit = st_nci_hci_dm_fwupd_end, }, { .vendor_id = ST_NCI_VENDOR_OUI, .subcmd = LOOPBACK, .doit = st_nci_loopback, }, { .vendor_id = ST_NCI_VENDOR_OUI, .subcmd = HCI_DM_VDC_MEASUREMENT_VALUE, .doit = st_nci_hci_dm_vdc_measurement_value, }, { .vendor_id = ST_NCI_VENDOR_OUI, .subcmd = HCI_DM_VDC_VALUE_COMPARISON, .doit = st_nci_hci_dm_vdc_value_comparison, }, { .vendor_id = ST_NCI_VENDOR_OUI, .subcmd = MANUFACTURER_SPECIFIC, .doit = st_nci_manufacturer_specific, }, }; int st_nci_vendor_cmds_init(struct nci_dev *ndev) { return nfc_set_vendor_cmds(ndev->nfc_dev, st_nci_vendor_cmds, sizeof(st_nci_vendor_cmds)); } EXPORT_SYMBOL(st_nci_vendor_cmds_init);