Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 212 insertions, 0 deletions

diff --git a/drivers/nfc/st21nfca/st21nfca.h b/drivers/nfc/st21nfca/st21nfca.h
new file mode 100644
index 000000000..7e2923ac9
--- /dev/null
+++ b/drivers/nfc/st21nfca/st21nfca.h
@@ -0,0 +1,212 @@
+/*
+ * Copyright (C) 2014  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/>.
+ */
+
+#ifndef __LOCAL_ST21NFCA_H_
+#define __LOCAL_ST21NFCA_H_
+
+#include <net/nfc/hci.h>
+#include <linux/skbuff.h>
+#include <linux/workqueue.h>
+
+#define HCI_MODE 0
+
+/* framing in HCI mode */
+#define ST21NFCA_SOF_EOF_LEN    2
+
+/* Almost every time value is 0 */
+#define ST21NFCA_HCI_LLC_LEN    1
+
+/* Size in worst case :
+ * In normal case CRC len = 2 but byte stuffing
+ * may appear in case one CRC byte = ST21NFCA_SOF_EOF
+ */
+#define ST21NFCA_HCI_LLC_CRC    4
+
+#define ST21NFCA_HCI_LLC_LEN_CRC        (ST21NFCA_SOF_EOF_LEN + \
+						ST21NFCA_HCI_LLC_LEN + \
+						ST21NFCA_HCI_LLC_CRC)
+#define ST21NFCA_HCI_LLC_MIN_SIZE       (1 + ST21NFCA_HCI_LLC_LEN_CRC)
+
+/* Worst case when adding byte stuffing between each byte */
+#define ST21NFCA_HCI_LLC_MAX_PAYLOAD    29
+#define ST21NFCA_HCI_LLC_MAX_SIZE       (ST21NFCA_HCI_LLC_LEN_CRC + 1 + \
+					ST21NFCA_HCI_LLC_MAX_PAYLOAD)
+
+/* Reader RF commands */
+#define ST21NFCA_WR_XCHG_DATA           0x10
+
+#define ST21NFCA_DEVICE_MGNT_GATE       0x01
+#define ST21NFCA_RF_READER_F_GATE       0x14
+#define ST21NFCA_RF_CARD_F_GATE		0x24
+#define ST21NFCA_APDU_READER_GATE	0xf0
+#define ST21NFCA_CONNECTIVITY_GATE	0x41
+
+/*
+ * ref ISO7816-3 chap 8.1. the initial character TS is followed by a
+ * sequence of at most 32 characters.
+ */
+#define ST21NFCA_ESE_MAX_LENGTH		33
+#define ST21NFCA_ESE_HOST_ID		0xc0
+
+#define DRIVER_DESC "HCI NFC driver for ST21NFCA"
+
+#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;
+};
+
+enum st21nfca_state {
+	ST21NFCA_ST_COLD,
+	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;
+	u8 curr_nfc_dep_pni;
+	u32 idx;
+	u8 to;
+	u8 did;
+	u8 bsi;
+	u8 bri;
+	u8 lri;
+} __packed;
+
+struct st21nfca_se_info {
+	u8 atr[ST21NFCA_ESE_MAX_LENGTH];
+	struct completion req_completion;
+
+	struct timer_list bwi_timer;
+	int wt_timeout; /* in msecs */
+	bool bwi_active;
+
+	struct timer_list se_active_timer;
+	bool se_active;
+	int expected_pipes;
+	int count_pipes;
+
+	bool xch_error;
+
+	se_io_cb_t cb;
+	void *cb_context;
+	struct work_struct timeout_work;
+};
+
+struct st21nfca_hci_info {
+	struct nfc_phy_ops *phy_ops;
+	void *phy_id;
+
+	struct nfc_hci_dev *hdev;
+	struct st21nfca_se_status *se_status;
+
+	enum st21nfca_state state;
+
+	struct mutex info_lock;
+
+	int async_cb_type;
+	data_exchange_cb_t async_cb;
+	void *async_cb_context;
+
+	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);
+void st21nfca_hci_remove(struct nfc_hci_dev *hdev);
+
+int st21nfca_dep_event_received(struct nfc_hci_dev *hdev,
+				u8 event, struct sk_buff *skb);
+int st21nfca_tm_send_dep_res(struct nfc_hci_dev *hdev, struct sk_buff *skb);
+
+int st21nfca_im_send_atr_req(struct nfc_hci_dev *hdev, u8 *gb, size_t gb_len);
+int st21nfca_im_send_dep_req(struct nfc_hci_dev *hdev, struct sk_buff *skb);
+void st21nfca_dep_init(struct nfc_hci_dev *hdev);
+void st21nfca_dep_deinit(struct nfc_hci_dev *hdev);
+
+int st21nfca_connectivity_event_received(struct nfc_hci_dev *hdev, u8 host,
+					u8 event, struct sk_buff *skb);
+int st21nfca_apdu_reader_event_received(struct nfc_hci_dev *hdev,
+					u8 event, struct sk_buff *skb);
+
+int st21nfca_hci_discover_se(struct nfc_hci_dev *hdev);
+int st21nfca_hci_enable_se(struct nfc_hci_dev *hdev, u32 se_idx);
+int st21nfca_hci_disable_se(struct nfc_hci_dev *hdev, u32 se_idx);
+int st21nfca_hci_se_io(struct nfc_hci_dev *hdev, u32 se_idx,
+		u8 *apdu, size_t apdu_length,
+		se_io_cb_t cb, void *cb_context);
+
+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_ */