| // 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) | |
| return r; | |
| 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); | |
| 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) | |
| return r; | |
| 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); | |
| 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) | |
| return r; | |
| 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); | |
| 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) | |
| return r; | |
| 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); | |
| 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) | |
| return r; | |
| 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); | |
| 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 const 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); |