| // 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); |
