forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
364 lines
8.0 KiB
364 lines
8.0 KiB
// SPDX-License-Identifier: GPL-2.0-only |
|
/* |
|
* Proprietary commands extension for STMicroelectronics NFC Chip |
|
* |
|
* Copyright (C) 2014-2015 STMicroelectronics SAS. All rights reserved. |
|
*/ |
|
|
|
#include <net/genetlink.h> |
|
#include <linux/module.h> |
|
#include <linux/nfc.h> |
|
#include <net/nfc/hci.h> |
|
#include <net/nfc/llc.h> |
|
|
|
#include "st21nfca.h" |
|
|
|
#define ST21NFCA_HCI_DM_GETDATA 0x10 |
|
#define ST21NFCA_HCI_DM_PUTDATA 0x11 |
|
#define ST21NFCA_HCI_DM_LOAD 0x12 |
|
#define ST21NFCA_HCI_DM_GETINFO 0x13 |
|
#define ST21NFCA_HCI_DM_UPDATE_AID 0x20 |
|
#define ST21NFCA_HCI_DM_RESET 0x3e |
|
|
|
#define ST21NFCA_HCI_DM_FIELD_GENERATOR 0x32 |
|
|
|
#define ST21NFCA_FACTORY_MODE_ON 1 |
|
#define ST21NFCA_FACTORY_MODE_OFF 0 |
|
|
|
#define ST21NFCA_EVT_POST_DATA 0x02 |
|
|
|
struct get_param_data { |
|
u8 gate; |
|
u8 data; |
|
} __packed; |
|
|
|
static int st21nfca_factory_mode(struct nfc_dev *dev, void *data, |
|
size_t data_len) |
|
{ |
|
struct nfc_hci_dev *hdev = nfc_get_drvdata(dev); |
|
|
|
if (data_len != 1) |
|
return -EINVAL; |
|
|
|
pr_debug("factory mode: %x\n", ((u8 *)data)[0]); |
|
|
|
switch (((u8 *)data)[0]) { |
|
case ST21NFCA_FACTORY_MODE_ON: |
|
test_and_set_bit(ST21NFCA_FACTORY_MODE, &hdev->quirks); |
|
break; |
|
case ST21NFCA_FACTORY_MODE_OFF: |
|
clear_bit(ST21NFCA_FACTORY_MODE, &hdev->quirks); |
|
break; |
|
default: |
|
return -EINVAL; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int st21nfca_hci_clear_all_pipes(struct nfc_dev *dev, void *data, |
|
size_t data_len) |
|
{ |
|
struct nfc_hci_dev *hdev = nfc_get_drvdata(dev); |
|
|
|
return nfc_hci_disconnect_all_gates(hdev); |
|
} |
|
|
|
static int st21nfca_hci_dm_put_data(struct nfc_dev *dev, void *data, |
|
size_t data_len) |
|
{ |
|
struct nfc_hci_dev *hdev = nfc_get_drvdata(dev); |
|
|
|
return nfc_hci_send_cmd(hdev, ST21NFCA_DEVICE_MGNT_GATE, |
|
ST21NFCA_HCI_DM_PUTDATA, data, |
|
data_len, NULL); |
|
} |
|
|
|
static int st21nfca_hci_dm_update_aid(struct nfc_dev *dev, void *data, |
|
size_t data_len) |
|
{ |
|
struct nfc_hci_dev *hdev = nfc_get_drvdata(dev); |
|
|
|
return nfc_hci_send_cmd(hdev, ST21NFCA_DEVICE_MGNT_GATE, |
|
ST21NFCA_HCI_DM_UPDATE_AID, data, data_len, NULL); |
|
} |
|
|
|
static int st21nfca_hci_dm_get_info(struct nfc_dev *dev, void *data, |
|
size_t data_len) |
|
{ |
|
int r; |
|
struct sk_buff *msg, *skb; |
|
struct nfc_hci_dev *hdev = nfc_get_drvdata(dev); |
|
|
|
r = nfc_hci_send_cmd(hdev, |
|
ST21NFCA_DEVICE_MGNT_GATE, |
|
ST21NFCA_HCI_DM_GETINFO, |
|
data, data_len, &skb); |
|
if (r) |
|
goto exit; |
|
|
|
msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST21NFCA_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 st21nfca_hci_dm_get_data(struct nfc_dev *dev, void *data, |
|
size_t data_len) |
|
{ |
|
int r; |
|
struct sk_buff *msg, *skb; |
|
struct nfc_hci_dev *hdev = nfc_get_drvdata(dev); |
|
|
|
r = nfc_hci_send_cmd(hdev, |
|
ST21NFCA_DEVICE_MGNT_GATE, |
|
ST21NFCA_HCI_DM_GETDATA, |
|
data, data_len, &skb); |
|
if (r) |
|
goto exit; |
|
|
|
msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST21NFCA_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 st21nfca_hci_dm_load(struct nfc_dev *dev, void *data, |
|
size_t data_len) |
|
{ |
|
struct nfc_hci_dev *hdev = nfc_get_drvdata(dev); |
|
|
|
return nfc_hci_send_cmd(hdev, ST21NFCA_DEVICE_MGNT_GATE, |
|
ST21NFCA_HCI_DM_LOAD, data, data_len, NULL); |
|
} |
|
|
|
static int st21nfca_hci_dm_reset(struct nfc_dev *dev, void *data, |
|
size_t data_len) |
|
{ |
|
int r; |
|
struct nfc_hci_dev *hdev = nfc_get_drvdata(dev); |
|
|
|
r = nfc_hci_send_cmd_async(hdev, ST21NFCA_DEVICE_MGNT_GATE, |
|
ST21NFCA_HCI_DM_RESET, data, data_len, NULL, NULL); |
|
if (r < 0) |
|
return r; |
|
|
|
r = nfc_llc_stop(hdev->llc); |
|
if (r < 0) |
|
return r; |
|
|
|
return nfc_llc_start(hdev->llc); |
|
} |
|
|
|
static int st21nfca_hci_get_param(struct nfc_dev *dev, void *data, |
|
size_t data_len) |
|
{ |
|
int r; |
|
struct sk_buff *msg, *skb; |
|
struct nfc_hci_dev *hdev = 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 = nfc_hci_get_param(hdev, param->gate, param->data, &skb); |
|
if (r) |
|
goto exit; |
|
|
|
msg = nfc_vendor_cmd_alloc_reply_skb(dev, ST21NFCA_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 st21nfca_hci_dm_field_generator(struct nfc_dev *dev, void *data, |
|
size_t data_len) |
|
{ |
|
struct nfc_hci_dev *hdev = nfc_get_drvdata(dev); |
|
|
|
return nfc_hci_send_cmd(hdev, |
|
ST21NFCA_DEVICE_MGNT_GATE, |
|
ST21NFCA_HCI_DM_FIELD_GENERATOR, |
|
data, data_len, NULL); |
|
} |
|
|
|
int st21nfca_hci_loopback_event_received(struct nfc_hci_dev *hdev, u8 event, |
|
struct sk_buff *skb) |
|
{ |
|
struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev); |
|
|
|
switch (event) { |
|
case ST21NFCA_EVT_POST_DATA: |
|
info->vendor_info.rx_skb = skb; |
|
break; |
|
default: |
|
nfc_err(&hdev->ndev->dev, "Unexpected event on loopback gate\n"); |
|
} |
|
complete(&info->vendor_info.req_completion); |
|
return 0; |
|
} |
|
EXPORT_SYMBOL(st21nfca_hci_loopback_event_received); |
|
|
|
static int st21nfca_hci_loopback(struct nfc_dev *dev, void *data, |
|
size_t data_len) |
|
{ |
|
int r; |
|
struct sk_buff *msg; |
|
struct nfc_hci_dev *hdev = nfc_get_drvdata(dev); |
|
struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev); |
|
|
|
if (data_len <= 0) |
|
return -EPROTO; |
|
|
|
reinit_completion(&info->vendor_info.req_completion); |
|
info->vendor_info.rx_skb = NULL; |
|
|
|
r = nfc_hci_send_event(hdev, NFC_HCI_LOOPBACK_GATE, |
|
ST21NFCA_EVT_POST_DATA, data, data_len); |
|
if (r < 0) { |
|
r = -EPROTO; |
|
goto exit; |
|
} |
|
|
|
wait_for_completion_interruptible(&info->vendor_info.req_completion); |
|
if (!info->vendor_info.rx_skb || |
|
info->vendor_info.rx_skb->len != data_len) { |
|
r = -EPROTO; |
|
goto exit; |
|
} |
|
|
|
msg = nfc_vendor_cmd_alloc_reply_skb(hdev->ndev, |
|
ST21NFCA_VENDOR_OUI, |
|
HCI_LOOPBACK, |
|
info->vendor_info.rx_skb->len); |
|
if (!msg) { |
|
r = -ENOMEM; |
|
goto free_skb; |
|
} |
|
|
|
if (nla_put(msg, NFC_ATTR_VENDOR_DATA, info->vendor_info.rx_skb->len, |
|
info->vendor_info.rx_skb->data)) { |
|
kfree_skb(msg); |
|
r = -ENOBUFS; |
|
goto free_skb; |
|
} |
|
|
|
r = nfc_vendor_cmd_reply(msg); |
|
free_skb: |
|
kfree_skb(info->vendor_info.rx_skb); |
|
exit: |
|
return r; |
|
} |
|
|
|
static struct nfc_vendor_cmd st21nfca_vendor_cmds[] = { |
|
{ |
|
.vendor_id = ST21NFCA_VENDOR_OUI, |
|
.subcmd = FACTORY_MODE, |
|
.doit = st21nfca_factory_mode, |
|
}, |
|
{ |
|
.vendor_id = ST21NFCA_VENDOR_OUI, |
|
.subcmd = HCI_CLEAR_ALL_PIPES, |
|
.doit = st21nfca_hci_clear_all_pipes, |
|
}, |
|
{ |
|
.vendor_id = ST21NFCA_VENDOR_OUI, |
|
.subcmd = HCI_DM_PUT_DATA, |
|
.doit = st21nfca_hci_dm_put_data, |
|
}, |
|
{ |
|
.vendor_id = ST21NFCA_VENDOR_OUI, |
|
.subcmd = HCI_DM_UPDATE_AID, |
|
.doit = st21nfca_hci_dm_update_aid, |
|
}, |
|
{ |
|
.vendor_id = ST21NFCA_VENDOR_OUI, |
|
.subcmd = HCI_DM_GET_INFO, |
|
.doit = st21nfca_hci_dm_get_info, |
|
}, |
|
{ |
|
.vendor_id = ST21NFCA_VENDOR_OUI, |
|
.subcmd = HCI_DM_GET_DATA, |
|
.doit = st21nfca_hci_dm_get_data, |
|
}, |
|
{ |
|
.vendor_id = ST21NFCA_VENDOR_OUI, |
|
.subcmd = HCI_DM_LOAD, |
|
.doit = st21nfca_hci_dm_load, |
|
}, |
|
{ |
|
.vendor_id = ST21NFCA_VENDOR_OUI, |
|
.subcmd = HCI_DM_RESET, |
|
.doit = st21nfca_hci_dm_reset, |
|
}, |
|
{ |
|
.vendor_id = ST21NFCA_VENDOR_OUI, |
|
.subcmd = HCI_GET_PARAM, |
|
.doit = st21nfca_hci_get_param, |
|
}, |
|
{ |
|
.vendor_id = ST21NFCA_VENDOR_OUI, |
|
.subcmd = HCI_DM_FIELD_GENERATOR, |
|
.doit = st21nfca_hci_dm_field_generator, |
|
}, |
|
{ |
|
.vendor_id = ST21NFCA_VENDOR_OUI, |
|
.subcmd = HCI_LOOPBACK, |
|
.doit = st21nfca_hci_loopback, |
|
}, |
|
}; |
|
|
|
int st21nfca_vendor_cmds_init(struct nfc_hci_dev *hdev) |
|
{ |
|
struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev); |
|
|
|
init_completion(&info->vendor_info.req_completion); |
|
return nfc_set_vendor_cmds(hdev->ndev, st21nfca_vendor_cmds, |
|
sizeof(st21nfca_vendor_cmds)); |
|
} |
|
EXPORT_SYMBOL(st21nfca_vendor_cmds_init);
|
|
|