Commit 15d17170 authored by Christophe Ricard's avatar Christophe Ricard Committed by Samuel Ortiz

NFC: st21nfca: Add support for proprietary commands

Add support for proprietary commands useful mainly
for factory testings.

Here is a list:

- FACTORY_MODE: Allow to set the driver into a mode where no
  secure element are activated. It does not consider any
  NFC_ATTR_VENDOR_DATA.
- HCI_CLEAR_ALL_PIPES: Allow to execute a HCI clear all pipes
  command. It does not consider any NFC_ATTR_VENDOR_DATA.
- HCI_DM_PUT_DATA: Allow to configure specific CLF registry as
  for example RF trimmings or low level drivers configurations
  (I2C, SPI, SWP).
- HCI_DM_UPDATE_AID: Allow to configure an AID routing into the
  CLF routing table following RF technology, CLF mode or protocol.
- HCI_DM_GET_INFO: Allow to retrieve CLF information.
- HCI_DM_GET_DATA: Allow to retrieve CLF configurable data such as
  low level drivers configurations or RF trimmings.
- HCI_DM_LOAD: Allow to load a firmware into the CLF. A complete
  packet can be more than 8KB.
- HCI_DM_RESET: Allow to run a CLF reset in order to "commit" CLF
  configuration changes without CLF power off.
- HCI_GET_PARAM: Allow to retrieve an HCI CLF parameter (for example
  the white list).
- HCI_DM_FIELD_GENERATOR: Allow to generate different kind of RF
  technology. When using this command to anti-collision is done.
- HCI_LOOPBACK: Allow to echo a command and test the Dh to CLF
  connectivity.
Signed-off-by: default avatarChristophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent 2b6e5bfe
......@@ -2,7 +2,7 @@
# Makefile for ST21NFCA HCI based NFC driver
#
st21nfca_hci-objs = core.o dep.o se.o
st21nfca_hci-objs = core.o dep.o se.o vendor_cmds.o
obj-$(CONFIG_NFC_ST21NFCA) += st21nfca_hci.o
st21nfca_i2c-objs = i2c.o
......
......@@ -923,6 +923,8 @@ static int st21nfca_hci_event_received(struct nfc_hci_dev *hdev, u8 pipe,
event, skb);
case ST21NFCA_APDU_READER_GATE:
return st21nfca_apdu_reader_event_received(hdev, event, skb);
case NFC_HCI_LOOPBACK_GATE:
return st21nfca_hci_loopback_event_received(hdev, event, skb);
default:
return 1;
}
......@@ -1024,6 +1026,7 @@ int st21nfca_hci_probe(void *phy_id, struct nfc_phy_ops *phy_ops,
*hdev = info->hdev;
st21nfca_dep_init(info->hdev);
st21nfca_se_init(info->hdev);
st21nfca_vendor_cmds_init(info->hdev);
return 0;
......
......@@ -167,6 +167,9 @@ int st21nfca_hci_discover_se(struct nfc_hci_dev *hdev)
struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
int se_count = 0;
if (test_bit(ST21NFCA_FACTORY_MODE, &hdev->quirks))
return 0;
if (info->se_status->is_uicc_present) {
nfc_add_se(hdev->ndev, NFC_HCI_UICC_HOST_ID, NFC_SE_UICC);
se_count++;
......@@ -191,7 +194,6 @@ int st21nfca_hci_enable_se(struct nfc_hci_dev *hdev, u32 se_idx)
* Same for eSE.
*/
r = st21nfca_hci_control_se(hdev, se_idx, ST21NFCA_SE_MODE_ON);
if (r == ST21NFCA_ESE_HOST_ID) {
st21nfca_se_get_atr(hdev);
r = nfc_hci_send_event(hdev, ST21NFCA_APDU_READER_GATE,
......
......@@ -66,6 +66,9 @@
#define ST21NFCA_HCI_MODE 0
#define ST21NFCA_NUM_DEVICES 256
#define ST21NFCA_VENDOR_OUI 0x0080E1 /* STMicroelectronics */
#define ST21NFCA_FACTORY_MODE 2
struct st21nfca_se_status {
bool is_ese_present;
bool is_uicc_present;
......@@ -76,6 +79,50 @@ enum st21nfca_state {
ST21NFCA_ST_READY,
};
/**
* enum nfc_vendor_cmds - supported nfc vendor commands
*
* @FACTORY_MODE: Allow to set the driver into a mode where no secure element
* are activated. It does not consider any NFC_ATTR_VENDOR_DATA.
* @HCI_CLEAR_ALL_PIPES: Allow to execute a HCI clear all pipes command.
* It does not consider any NFC_ATTR_VENDOR_DATA.
* @HCI_DM_PUT_DATA: Allow to configure specific CLF registry as for example
* RF trimmings or low level drivers configurations (I2C, SPI, SWP).
* @HCI_DM_UPDATE_AID: Allow to configure an AID routing into the CLF routing
* table following RF technology, CLF mode or protocol.
* @HCI_DM_GET_INFO: Allow to retrieve CLF information.
* @HCI_DM_GET_DATA: Allow to retrieve CLF configurable data such as low
* level drivers configurations or RF trimmings.
* @HCI_DM_LOAD: Allow to load a firmware into the CLF. A complete
* packet can be more than 8KB.
* @HCI_DM_RESET: Allow to run a CLF reset in order to "commit" CLF
* configuration changes without CLF power off.
* @HCI_GET_PARAM: Allow to retrieve an HCI CLF parameter (for example the
* white list).
* @HCI_DM_FIELD_GENERATOR: Allow to generate different kind of RF
* technology. When using this command to anti-collision is done.
* @HCI_LOOPBACK: Allow to echo a command and test the Dh to CLF
* connectivity.
*/
enum nfc_vendor_cmds {
FACTORY_MODE,
HCI_CLEAR_ALL_PIPES,
HCI_DM_PUT_DATA,
HCI_DM_UPDATE_AID,
HCI_DM_GET_INFO,
HCI_DM_GET_DATA,
HCI_DM_LOAD,
HCI_DM_RESET,
HCI_GET_PARAM,
HCI_DM_FIELD_GENERATOR,
HCI_LOOPBACK,
};
struct st21nfca_vendor_info {
struct completion req_completion;
struct sk_buff *rx_skb;
};
struct st21nfca_dep_info {
struct sk_buff *tx_pending;
struct work_struct tx_work;
......@@ -124,12 +171,13 @@ struct st21nfca_hci_info {
struct st21nfca_dep_info dep_info;
struct st21nfca_se_info se_info;
struct st21nfca_vendor_info vendor_info;
};
int st21nfca_hci_probe(void *phy_id, struct nfc_phy_ops *phy_ops,
char *llc_name, int phy_headroom, int phy_tailroom,
int phy_payload, struct nfc_hci_dev **hdev,
struct st21nfca_se_status *se_status);
struct st21nfca_se_status *se_status);
void st21nfca_hci_remove(struct nfc_hci_dev *hdev);
int st21nfca_dep_event_received(struct nfc_hci_dev *hdev,
......@@ -156,4 +204,8 @@ int st21nfca_hci_se_io(struct nfc_hci_dev *hdev, u32 se_idx,
void st21nfca_se_init(struct nfc_hci_dev *hdev);
void st21nfca_se_deinit(struct nfc_hci_dev *hdev);
int st21nfca_hci_loopback_event_received(struct nfc_hci_dev *ndev, u8 event,
struct sk_buff *skb);
int st21nfca_vendor_cmds_init(struct nfc_hci_dev *ndev);
#endif /* __LOCAL_ST21NFCA_H_ */
/*
* Proprietary commands extension for STMicroelectronics NFC Chip
*
* Copyright (C) 2014-2015 STMicroelectronics SAS. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#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);
......@@ -144,11 +144,13 @@ inline int nfc_llc_start(struct nfc_llc *llc)
{
return llc->ops->start(llc);
}
EXPORT_SYMBOL(nfc_llc_start);
inline int nfc_llc_stop(struct nfc_llc *llc)
{
return llc->ops->stop(llc);
}
EXPORT_SYMBOL(nfc_llc_stop);
inline void nfc_llc_rcv_from_drv(struct nfc_llc *llc, struct sk_buff *skb)
{
......
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