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|
// 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 nci_set_vendor_cmds(ndev, st_nci_vendor_cmds,
sizeof(st_nci_vendor_cmds));
}
EXPORT_SYMBOL(st_nci_vendor_cmds_init);
|
