diff options
Diffstat (limited to 'drivers/nfc')
| -rw-r--r-- | drivers/nfc/st21nfca/Makefile | 2 | ||||
| -rw-r--r-- | drivers/nfc/st21nfca/core.c | 3 | ||||
| -rw-r--r-- | drivers/nfc/st21nfca/se.c | 4 | ||||
| -rw-r--r-- | drivers/nfc/st21nfca/st21nfca.h | 54 | ||||
| -rw-r--r-- | drivers/nfc/st21nfca/vendor_cmds.c | 375 |
5 files changed, 435 insertions, 3 deletions
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 496ee7c..dd8b150 100644 --- a/drivers/nfc/st21nfca/core.c +++ b/drivers/nfc/st21nfca/core.c @@ -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; diff --git a/drivers/nfc/st21nfca/se.c b/drivers/nfc/st21nfca/se.c index dd3e15c..c79d99b 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..ab765e5 --- /dev/null +++ b/drivers/nfc/st21nfca/vendor_cmds.c @@ -0,0 +1,375 @@ +/* + * 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); |