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: Christophe Ricard <christophe-h.ricard@xxxxxx>
---
drivers/nfc/st21nfca/Makefile | 2 +-
drivers/nfc/st21nfca/core.c | 3 +
drivers/nfc/st21nfca/se.c | 4 +-
drivers/nfc/st21nfca/st21nfca.h | 54 +++++-
drivers/nfc/st21nfca/vendor_cmds.c | 370 +++++++++++++++++++++++++++++++++++++
5 files changed, 430 insertions(+), 3 deletions(-)
create mode 100644 drivers/nfc/st21nfca/vendor_cmds.c
diff --git a/drivers/nfc/st21nfca/Makefile b/drivers/nfc/st21nfca/Makefile
index 82434c3..ded6489 100644
--- a/drivers/nfc/st21nfca/Makefile
+++ b/drivers/nfc/st21nfca/Makefile
@@ -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
diff --git a/drivers/nfc/st21nfca/core.c b/drivers/nfc/st21nfca/core.c
index 6fc60bb..d36e290 100644
--- a/drivers/nfc/st21nfca/core.c
+++ b/drivers/nfc/st21nfca/core.c
@@ -921,6 +921,8 @@ 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;
}
@@ -1022,6 +1024,7 @@ 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;
diff --git a/drivers/nfc/st21nfca/se.c b/drivers/nfc/st21nfca/se.c
index d3347c7..e04f603 100644
--- a/drivers/nfc/st21nfca/se.c
+++ b/drivers/nfc/st21nfca/se.c
@@ -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,
diff --git a/drivers/nfc/st21nfca/st21nfca.h b/drivers/nfc/st21nfca/st21nfca.h
index 70e2d43..94ffb05 100644
--- a/drivers/nfc/st21nfca/st21nfca.h
+++ b/drivers/nfc/st21nfca/st21nfca.h
@@ -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_ */
diff --git a/drivers/nfc/st21nfca/vendor_cmds.c b/drivers/nfc/st21nfca/vendor_cmds.c
new file mode 100644
index 0000000..55cbb1b
--- /dev/null
+++ b/drivers/nfc/st21nfca/vendor_cmds.c
@@ -0,0 +1,370 @@
+/*
+ * 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"
+#include "st21nfca_vendor_cmds.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);
--
2.1.4
--
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