# Makefile for ST21NFCA HCI based NFC driver
#
-st21nfca_hci-objs = st21nfca.o st21nfca_dep.o st21nfca_se.o
+st21nfca_hci-objs = core.o dep.o se.o
obj-$(CONFIG_NFC_ST21NFCA) += st21nfca_hci.o
st21nfca_i2c-objs = i2c.o
--- /dev/null
+/*
+ * HCI based Driver for STMicroelectronics NFC Chip
+ *
+ * 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/>.
+ */
+
+#include <linux/module.h>
+#include <linux/nfc.h>
+#include <net/nfc/hci.h>
+#include <net/nfc/llc.h>
+
+#include "st21nfca.h"
+
+#define DRIVER_DESC "HCI NFC driver for ST21NFCA"
+
+#define FULL_VERSION_LEN 3
+
+/* Proprietary gates, events, commands and registers */
+
+/* Commands that apply to all RF readers */
+#define ST21NFCA_RF_READER_CMD_PRESENCE_CHECK 0x30
+
+#define ST21NFCA_RF_READER_ISO15693_GATE 0x12
+#define ST21NFCA_RF_READER_ISO15693_INVENTORY 0x01
+
+/*
+ * Reader gate for communication with contact-less cards using Type A
+ * protocol ISO14443-3 but not compliant with ISO14443-4
+ */
+#define ST21NFCA_RF_READER_14443_3_A_GATE 0x15
+#define ST21NFCA_RF_READER_14443_3_A_UID 0x02
+#define ST21NFCA_RF_READER_14443_3_A_ATQA 0x03
+#define ST21NFCA_RF_READER_14443_3_A_SAK 0x04
+
+#define ST21NFCA_RF_READER_F_DATARATE 0x01
+#define ST21NFCA_RF_READER_F_DATARATE_106 0x01
+#define ST21NFCA_RF_READER_F_DATARATE_212 0x02
+#define ST21NFCA_RF_READER_F_DATARATE_424 0x04
+#define ST21NFCA_RF_READER_F_POL_REQ 0x02
+#define ST21NFCA_RF_READER_F_POL_REQ_DEFAULT 0xffff0000
+#define ST21NFCA_RF_READER_F_NFCID2 0x03
+#define ST21NFCA_RF_READER_F_NFCID1 0x04
+
+#define ST21NFCA_RF_CARD_F_MODE 0x01
+#define ST21NFCA_RF_CARD_F_NFCID2_LIST 0x04
+#define ST21NFCA_RF_CARD_F_NFCID1 0x05
+#define ST21NFCA_RF_CARD_F_SENS_RES 0x06
+#define ST21NFCA_RF_CARD_F_SEL_RES 0x07
+#define ST21NFCA_RF_CARD_F_DATARATE 0x08
+#define ST21NFCA_RF_CARD_F_DATARATE_212_424 0x01
+
+#define ST21NFCA_DEVICE_MGNT_PIPE 0x02
+
+#define ST21NFCA_DM_GETINFO 0x13
+#define ST21NFCA_DM_GETINFO_PIPE_LIST 0x02
+#define ST21NFCA_DM_GETINFO_PIPE_INFO 0x01
+#define ST21NFCA_DM_PIPE_CREATED 0x02
+#define ST21NFCA_DM_PIPE_OPEN 0x04
+#define ST21NFCA_DM_RF_ACTIVE 0x80
+#define ST21NFCA_DM_DISCONNECT 0x30
+
+#define ST21NFCA_DM_IS_PIPE_OPEN(p) \
+ ((p & 0x0f) == (ST21NFCA_DM_PIPE_CREATED | ST21NFCA_DM_PIPE_OPEN))
+
+#define ST21NFCA_NFC_MODE 0x03 /* NFC_MODE parameter*/
+
+#define ST21NFCA_EVT_HOT_PLUG 0x03
+#define ST21NFCA_EVT_HOT_PLUG_IS_INHIBITED(x) (x->data[0] & 0x80)
+
+#define ST21NFCA_SE_TO_PIPES 2000
+
+static DECLARE_BITMAP(dev_mask, ST21NFCA_NUM_DEVICES);
+
+static struct nfc_hci_gate st21nfca_gates[] = {
+ {NFC_HCI_ADMIN_GATE, NFC_HCI_ADMIN_PIPE},
+ {NFC_HCI_LOOPBACK_GATE, NFC_HCI_INVALID_PIPE},
+ {NFC_HCI_ID_MGMT_GATE, NFC_HCI_INVALID_PIPE},
+ {NFC_HCI_LINK_MGMT_GATE, NFC_HCI_LINK_MGMT_PIPE},
+ {NFC_HCI_RF_READER_B_GATE, NFC_HCI_INVALID_PIPE},
+ {NFC_HCI_RF_READER_A_GATE, NFC_HCI_INVALID_PIPE},
+ {ST21NFCA_DEVICE_MGNT_GATE, ST21NFCA_DEVICE_MGNT_PIPE},
+ {ST21NFCA_RF_READER_F_GATE, NFC_HCI_INVALID_PIPE},
+ {ST21NFCA_RF_READER_14443_3_A_GATE, NFC_HCI_INVALID_PIPE},
+ {ST21NFCA_RF_READER_ISO15693_GATE, NFC_HCI_INVALID_PIPE},
+ {ST21NFCA_RF_CARD_F_GATE, NFC_HCI_INVALID_PIPE},
+
+ /* Secure element pipes are created by secure element host */
+ {ST21NFCA_CONNECTIVITY_GATE, NFC_HCI_DO_NOT_CREATE_PIPE},
+ {ST21NFCA_APDU_READER_GATE, NFC_HCI_DO_NOT_CREATE_PIPE},
+};
+
+struct st21nfca_pipe_info {
+ u8 pipe_state;
+ u8 src_host_id;
+ u8 src_gate_id;
+ u8 dst_host_id;
+ u8 dst_gate_id;
+} __packed;
+
+/* Largest headroom needed for outgoing custom commands */
+#define ST21NFCA_CMDS_HEADROOM 7
+
+static int st21nfca_hci_load_session(struct nfc_hci_dev *hdev)
+{
+ int i, j, r;
+ struct sk_buff *skb_pipe_list, *skb_pipe_info;
+ struct st21nfca_pipe_info *info;
+
+ u8 pipe_list[] = { ST21NFCA_DM_GETINFO_PIPE_LIST,
+ NFC_HCI_TERMINAL_HOST_ID
+ };
+ u8 pipe_info[] = { ST21NFCA_DM_GETINFO_PIPE_INFO,
+ NFC_HCI_TERMINAL_HOST_ID, 0
+ };
+
+ /* On ST21NFCA device pipes number are dynamics
+ * A maximum of 16 pipes can be created at the same time
+ * If pipes are already created, hci_dev_up will fail.
+ * Doing a clear all pipe is a bad idea because:
+ * - It does useless EEPROM cycling
+ * - It might cause issue for secure elements support
+ * (such as removing connectivity or APDU reader pipe)
+ * A better approach on ST21NFCA is to:
+ * - get a pipe list for each host.
+ * (eg: NFC_HCI_HOST_CONTROLLER_ID for now).
+ * (TODO Later on UICC HOST and eSE HOST)
+ * - get pipe information
+ * - match retrieved pipe list in st21nfca_gates
+ * ST21NFCA_DEVICE_MGNT_GATE is a proprietary gate
+ * with ST21NFCA_DEVICE_MGNT_PIPE.
+ * Pipe can be closed and need to be open.
+ */
+ r = nfc_hci_connect_gate(hdev, NFC_HCI_HOST_CONTROLLER_ID,
+ ST21NFCA_DEVICE_MGNT_GATE,
+ ST21NFCA_DEVICE_MGNT_PIPE);
+ if (r < 0)
+ return r;
+
+ /* Get pipe list */
+ r = nfc_hci_send_cmd(hdev, ST21NFCA_DEVICE_MGNT_GATE,
+ ST21NFCA_DM_GETINFO, pipe_list, sizeof(pipe_list),
+ &skb_pipe_list);
+ if (r < 0)
+ return r;
+
+ /* Complete the existing gate_pipe table */
+ for (i = 0; i < skb_pipe_list->len; i++) {
+ pipe_info[2] = skb_pipe_list->data[i];
+ r = nfc_hci_send_cmd(hdev, ST21NFCA_DEVICE_MGNT_GATE,
+ ST21NFCA_DM_GETINFO, pipe_info,
+ sizeof(pipe_info), &skb_pipe_info);
+
+ if (r)
+ continue;
+
+ /*
+ * Match pipe ID and gate ID
+ * Output format from ST21NFC_DM_GETINFO is:
+ * - pipe state (1byte)
+ * - source hid (1byte)
+ * - source gid (1byte)
+ * - destination hid (1byte)
+ * - destination gid (1byte)
+ */
+ info = (struct st21nfca_pipe_info *) skb_pipe_info->data;
+ if (info->dst_gate_id == ST21NFCA_APDU_READER_GATE &&
+ info->src_host_id != ST21NFCA_ESE_HOST_ID) {
+ pr_err("Unexpected apdu_reader pipe on host %x\n",
+ info->src_host_id);
+ kfree_skb(skb_pipe_info);
+ continue;
+ }
+
+ for (j = 0; (j < ARRAY_SIZE(st21nfca_gates)) &&
+ (st21nfca_gates[j].gate != info->dst_gate_id) ; j++)
+ ;
+
+ if (j < ARRAY_SIZE(st21nfca_gates) &&
+ st21nfca_gates[j].gate == info->dst_gate_id &&
+ ST21NFCA_DM_IS_PIPE_OPEN(info->pipe_state)) {
+ st21nfca_gates[j].pipe = pipe_info[2];
+
+ hdev->gate2pipe[st21nfca_gates[j].gate] =
+ st21nfca_gates[j].pipe;
+ hdev->pipes[st21nfca_gates[j].pipe].gate =
+ st21nfca_gates[j].gate;
+ hdev->pipes[st21nfca_gates[j].pipe].dest_host =
+ info->src_host_id;
+ }
+ kfree_skb(skb_pipe_info);
+ }
+
+ /*
+ * 3 gates have a well known pipe ID.
+ * They will never appear in the pipe list
+ */
+ if (skb_pipe_list->len + 3 < ARRAY_SIZE(st21nfca_gates)) {
+ for (i = skb_pipe_list->len + 3;
+ i < ARRAY_SIZE(st21nfca_gates) - 2; i++) {
+ r = nfc_hci_connect_gate(hdev,
+ NFC_HCI_HOST_CONTROLLER_ID,
+ st21nfca_gates[i].gate,
+ st21nfca_gates[i].pipe);
+ if (r < 0)
+ goto free_list;
+ }
+ }
+
+ memcpy(hdev->init_data.gates, st21nfca_gates, sizeof(st21nfca_gates));
+free_list:
+ kfree_skb(skb_pipe_list);
+ return r;
+}
+
+static int st21nfca_hci_open(struct nfc_hci_dev *hdev)
+{
+ struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
+ int r;
+
+ mutex_lock(&info->info_lock);
+
+ if (info->state != ST21NFCA_ST_COLD) {
+ r = -EBUSY;
+ goto out;
+ }
+
+ r = info->phy_ops->enable(info->phy_id);
+
+ if (r == 0)
+ info->state = ST21NFCA_ST_READY;
+
+out:
+ mutex_unlock(&info->info_lock);
+ return r;
+}
+
+static void st21nfca_hci_close(struct nfc_hci_dev *hdev)
+{
+ struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
+
+ mutex_lock(&info->info_lock);
+
+ if (info->state == ST21NFCA_ST_COLD)
+ goto out;
+
+ info->phy_ops->disable(info->phy_id);
+ info->state = ST21NFCA_ST_COLD;
+
+out:
+ mutex_unlock(&info->info_lock);
+}
+
+static int st21nfca_hci_ready(struct nfc_hci_dev *hdev)
+{
+ struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
+ struct sk_buff *skb;
+
+ u8 param;
+ u8 white_list[2];
+ int wl_size = 0;
+ int r;
+
+ if (info->se_status->is_ese_present &&
+ info->se_status->is_uicc_present) {
+ white_list[wl_size++] = NFC_HCI_UICC_HOST_ID;
+ white_list[wl_size++] = ST21NFCA_ESE_HOST_ID;
+ } else if (!info->se_status->is_ese_present &&
+ info->se_status->is_uicc_present) {
+ white_list[wl_size++] = NFC_HCI_UICC_HOST_ID;
+ } else if (info->se_status->is_ese_present &&
+ !info->se_status->is_uicc_present) {
+ white_list[wl_size++] = ST21NFCA_ESE_HOST_ID;
+ }
+
+ if (wl_size) {
+ r = nfc_hci_set_param(hdev, NFC_HCI_ADMIN_GATE,
+ NFC_HCI_ADMIN_WHITELIST,
+ (u8 *) &white_list, wl_size);
+ if (r < 0)
+ return r;
+ }
+
+ /* Set NFC_MODE in device management gate to enable */
+ r = nfc_hci_get_param(hdev, ST21NFCA_DEVICE_MGNT_GATE,
+ ST21NFCA_NFC_MODE, &skb);
+ if (r < 0)
+ return r;
+
+ param = skb->data[0];
+ kfree_skb(skb);
+ if (param == 0) {
+ param = 1;
+
+ r = nfc_hci_set_param(hdev, ST21NFCA_DEVICE_MGNT_GATE,
+ ST21NFCA_NFC_MODE, ¶m, 1);
+ if (r < 0)
+ return r;
+ }
+
+ r = nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
+ NFC_HCI_EVT_END_OPERATION, NULL, 0);
+ if (r < 0)
+ return r;
+
+ r = nfc_hci_get_param(hdev, NFC_HCI_ID_MGMT_GATE,
+ NFC_HCI_ID_MGMT_VERSION_SW, &skb);
+ if (r < 0)
+ return r;
+
+ if (skb->len != FULL_VERSION_LEN) {
+ kfree_skb(skb);
+ return -EINVAL;
+ }
+
+ print_hex_dump(KERN_DEBUG, "FULL VERSION SOFTWARE INFO: ",
+ DUMP_PREFIX_NONE, 16, 1,
+ skb->data, FULL_VERSION_LEN, false);
+
+ kfree_skb(skb);
+
+ return 0;
+}
+
+static int st21nfca_hci_xmit(struct nfc_hci_dev *hdev, struct sk_buff *skb)
+{
+ struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
+
+ return info->phy_ops->write(info->phy_id, skb);
+}
+
+static int st21nfca_hci_start_poll(struct nfc_hci_dev *hdev,
+ u32 im_protocols, u32 tm_protocols)
+{
+ int r;
+ u32 pol_req;
+ u8 param[19];
+ struct sk_buff *datarate_skb;
+
+ pr_info(DRIVER_DESC ": %s protocols 0x%x 0x%x\n",
+ __func__, im_protocols, tm_protocols);
+
+ r = nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
+ NFC_HCI_EVT_END_OPERATION, NULL, 0);
+ if (r < 0)
+ return r;
+ if (im_protocols) {
+ /*
+ * enable polling according to im_protocols & tm_protocols
+ * - CLOSE pipe according to im_protocols & tm_protocols
+ */
+ if ((NFC_HCI_RF_READER_B_GATE & im_protocols) == 0) {
+ r = nfc_hci_disconnect_gate(hdev,
+ NFC_HCI_RF_READER_B_GATE);
+ if (r < 0)
+ return r;
+ }
+
+ if ((NFC_HCI_RF_READER_A_GATE & im_protocols) == 0) {
+ r = nfc_hci_disconnect_gate(hdev,
+ NFC_HCI_RF_READER_A_GATE);
+ if (r < 0)
+ return r;
+ }
+
+ if ((ST21NFCA_RF_READER_F_GATE & im_protocols) == 0) {
+ r = nfc_hci_disconnect_gate(hdev,
+ ST21NFCA_RF_READER_F_GATE);
+ if (r < 0)
+ return r;
+ } else {
+ hdev->gb = nfc_get_local_general_bytes(hdev->ndev,
+ &hdev->gb_len);
+
+ if (hdev->gb == NULL || hdev->gb_len == 0) {
+ im_protocols &= ~NFC_PROTO_NFC_DEP_MASK;
+ tm_protocols &= ~NFC_PROTO_NFC_DEP_MASK;
+ }
+
+ param[0] = ST21NFCA_RF_READER_F_DATARATE_106 |
+ ST21NFCA_RF_READER_F_DATARATE_212 |
+ ST21NFCA_RF_READER_F_DATARATE_424;
+ r = nfc_hci_set_param(hdev, ST21NFCA_RF_READER_F_GATE,
+ ST21NFCA_RF_READER_F_DATARATE,
+ param, 1);
+ if (r < 0)
+ return r;
+
+ pol_req = be32_to_cpu((__force __be32)
+ ST21NFCA_RF_READER_F_POL_REQ_DEFAULT);
+ r = nfc_hci_set_param(hdev, ST21NFCA_RF_READER_F_GATE,
+ ST21NFCA_RF_READER_F_POL_REQ,
+ (u8 *) &pol_req, 4);
+ if (r < 0)
+ return r;
+ }
+
+ if ((ST21NFCA_RF_READER_14443_3_A_GATE & im_protocols) == 0) {
+ r = nfc_hci_disconnect_gate(hdev,
+ ST21NFCA_RF_READER_14443_3_A_GATE);
+ if (r < 0)
+ return r;
+ }
+
+ if ((ST21NFCA_RF_READER_ISO15693_GATE & im_protocols) == 0) {
+ r = nfc_hci_disconnect_gate(hdev,
+ ST21NFCA_RF_READER_ISO15693_GATE);
+ if (r < 0)
+ return r;
+ }
+
+ r = nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
+ NFC_HCI_EVT_READER_REQUESTED, NULL, 0);
+ if (r < 0)
+ nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
+ NFC_HCI_EVT_END_OPERATION, NULL, 0);
+ }
+
+ if (tm_protocols & NFC_PROTO_NFC_DEP_MASK) {
+ r = nfc_hci_get_param(hdev, ST21NFCA_RF_CARD_F_GATE,
+ ST21NFCA_RF_CARD_F_DATARATE,
+ &datarate_skb);
+ if (r < 0)
+ return r;
+
+ /* Configure the maximum supported datarate to 424Kbps */
+ if (datarate_skb->len > 0 &&
+ datarate_skb->data[0] !=
+ ST21NFCA_RF_CARD_F_DATARATE_212_424) {
+ param[0] = ST21NFCA_RF_CARD_F_DATARATE_212_424;
+ r = nfc_hci_set_param(hdev, ST21NFCA_RF_CARD_F_GATE,
+ ST21NFCA_RF_CARD_F_DATARATE,
+ param, 1);
+ if (r < 0) {
+ kfree_skb(datarate_skb);
+ return r;
+ }
+ }
+ kfree_skb(datarate_skb);
+
+ /*
+ * Configure sens_res
+ *
+ * NFC Forum Digital Spec Table 7:
+ * NFCID1 size: triple (10 bytes)
+ */
+ param[0] = 0x00;
+ param[1] = 0x08;
+ r = nfc_hci_set_param(hdev, ST21NFCA_RF_CARD_F_GATE,
+ ST21NFCA_RF_CARD_F_SENS_RES, param, 2);
+ if (r < 0)
+ return r;
+
+ /*
+ * Configure sel_res
+ *
+ * NFC Forum Digistal Spec Table 17:
+ * b3 set to 0b (value b7-b6):
+ * - 10b: Configured for NFC-DEP Protocol
+ */
+ param[0] = 0x40;
+ r = nfc_hci_set_param(hdev, ST21NFCA_RF_CARD_F_GATE,
+ ST21NFCA_RF_CARD_F_SEL_RES, param, 1);
+ if (r < 0)
+ return r;
+
+ /* Configure NFCID1 Random uid */
+ r = nfc_hci_set_param(hdev, ST21NFCA_RF_CARD_F_GATE,
+ ST21NFCA_RF_CARD_F_NFCID1, NULL, 0);
+ if (r < 0)
+ return r;
+
+ /* Configure NFCID2_LIST */
+ /* System Code */
+ param[0] = 0x00;
+ param[1] = 0x00;
+ /* NFCID2 */
+ param[2] = 0x01;
+ param[3] = 0xfe;
+ param[4] = 'S';
+ param[5] = 'T';
+ param[6] = 'M';
+ param[7] = 'i';
+ param[8] = 'c';
+ param[9] = 'r';
+ /* 8 byte Pad bytes used for polling respone frame */
+
+ /*
+ * Configuration byte:
+ * - bit 0: define the default NFCID2 entry used when the
+ * system code is equal to 'FFFF'
+ * - bit 1: use a random value for lowest 6 bytes of
+ * NFCID2 value
+ * - bit 2: ignore polling request frame if request code
+ * is equal to '01'
+ * - Other bits are RFU
+ */
+ param[18] = 0x01;
+ r = nfc_hci_set_param(hdev, ST21NFCA_RF_CARD_F_GATE,
+ ST21NFCA_RF_CARD_F_NFCID2_LIST, param,
+ 19);
+ if (r < 0)
+ return r;
+
+ param[0] = 0x02;
+ r = nfc_hci_set_param(hdev, ST21NFCA_RF_CARD_F_GATE,
+ ST21NFCA_RF_CARD_F_MODE, param, 1);
+ }
+
+ return r;
+}
+
+static void st21nfca_hci_stop_poll(struct nfc_hci_dev *hdev)
+{
+ nfc_hci_send_cmd(hdev, ST21NFCA_DEVICE_MGNT_GATE,
+ ST21NFCA_DM_DISCONNECT, NULL, 0, NULL);
+}
+
+static int st21nfca_get_iso14443_3_atqa(struct nfc_hci_dev *hdev, u16 *atqa)
+{
+ int r;
+ struct sk_buff *atqa_skb = NULL;
+
+ r = nfc_hci_get_param(hdev, ST21NFCA_RF_READER_14443_3_A_GATE,
+ ST21NFCA_RF_READER_14443_3_A_ATQA, &atqa_skb);
+ if (r < 0)
+ goto exit;
+
+ if (atqa_skb->len != 2) {
+ r = -EPROTO;
+ goto exit;
+ }
+
+ *atqa = be16_to_cpu(*(__be16 *) atqa_skb->data);
+
+exit:
+ kfree_skb(atqa_skb);
+ return r;
+}
+
+static int st21nfca_get_iso14443_3_sak(struct nfc_hci_dev *hdev, u8 *sak)
+{
+ int r;
+ struct sk_buff *sak_skb = NULL;
+
+ r = nfc_hci_get_param(hdev, ST21NFCA_RF_READER_14443_3_A_GATE,
+ ST21NFCA_RF_READER_14443_3_A_SAK, &sak_skb);
+ if (r < 0)
+ goto exit;
+
+ if (sak_skb->len != 1) {
+ r = -EPROTO;
+ goto exit;
+ }
+
+ *sak = sak_skb->data[0];
+
+exit:
+ kfree_skb(sak_skb);
+ return r;
+}
+
+static int st21nfca_get_iso14443_3_uid(struct nfc_hci_dev *hdev, u8 *uid,
+ int *len)
+{
+ int r;
+ struct sk_buff *uid_skb = NULL;
+
+ r = nfc_hci_get_param(hdev, ST21NFCA_RF_READER_14443_3_A_GATE,
+ ST21NFCA_RF_READER_14443_3_A_UID, &uid_skb);
+ if (r < 0)
+ goto exit;
+
+ if (uid_skb->len == 0 || uid_skb->len > NFC_NFCID1_MAXSIZE) {
+ r = -EPROTO;
+ goto exit;
+ }
+
+ memcpy(uid, uid_skb->data, uid_skb->len);
+ *len = uid_skb->len;
+exit:
+ kfree_skb(uid_skb);
+ return r;
+}
+
+static int st21nfca_get_iso15693_inventory(struct nfc_hci_dev *hdev,
+ struct nfc_target *target)
+{
+ int r;
+ struct sk_buff *inventory_skb = NULL;
+
+ r = nfc_hci_get_param(hdev, ST21NFCA_RF_READER_ISO15693_GATE,
+ ST21NFCA_RF_READER_ISO15693_INVENTORY,
+ &inventory_skb);
+ if (r < 0)
+ goto exit;
+
+ skb_pull(inventory_skb, 2);
+
+ if (inventory_skb->len == 0 ||
+ inventory_skb->len > NFC_ISO15693_UID_MAXSIZE) {
+ r = -EPROTO;
+ goto exit;
+ }
+
+ memcpy(target->iso15693_uid, inventory_skb->data, inventory_skb->len);
+ target->iso15693_dsfid = inventory_skb->data[1];
+ target->is_iso15693 = 1;
+exit:
+ kfree_skb(inventory_skb);
+ return r;
+}
+
+static int st21nfca_hci_dep_link_up(struct nfc_hci_dev *hdev,
+ struct nfc_target *target, u8 comm_mode,
+ u8 *gb, size_t gb_len)
+{
+ struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
+
+ info->dep_info.idx = target->idx;
+ return st21nfca_im_send_atr_req(hdev, gb, gb_len);
+}
+
+static int st21nfca_hci_dep_link_down(struct nfc_hci_dev *hdev)
+{
+ struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
+
+ info->state = ST21NFCA_ST_READY;
+
+ return nfc_hci_send_cmd(hdev, ST21NFCA_DEVICE_MGNT_GATE,
+ ST21NFCA_DM_DISCONNECT, NULL, 0, NULL);
+}
+
+static int st21nfca_hci_target_from_gate(struct nfc_hci_dev *hdev, u8 gate,
+ struct nfc_target *target)
+{
+ int r, len;
+ u16 atqa;
+ u8 sak;
+ u8 uid[NFC_NFCID1_MAXSIZE];
+
+ switch (gate) {
+ case ST21NFCA_RF_READER_F_GATE:
+ target->supported_protocols = NFC_PROTO_FELICA_MASK;
+ break;
+ case ST21NFCA_RF_READER_14443_3_A_GATE:
+ /* ISO14443-3 type 1 or 2 tags */
+ r = st21nfca_get_iso14443_3_atqa(hdev, &atqa);
+ if (r < 0)
+ return r;
+ if (atqa == 0x000c) {
+ target->supported_protocols = NFC_PROTO_JEWEL_MASK;
+ target->sens_res = 0x0c00;
+ } else {
+ r = st21nfca_get_iso14443_3_sak(hdev, &sak);
+ if (r < 0)
+ return r;
+
+ r = st21nfca_get_iso14443_3_uid(hdev, uid, &len);
+ if (r < 0)
+ return r;
+
+ target->supported_protocols =
+ nfc_hci_sak_to_protocol(sak);
+ if (target->supported_protocols == 0xffffffff)
+ return -EPROTO;
+
+ target->sens_res = atqa;
+ target->sel_res = sak;
+ memcpy(target->nfcid1, uid, len);
+ target->nfcid1_len = len;
+ }
+
+ break;
+ case ST21NFCA_RF_READER_ISO15693_GATE:
+ target->supported_protocols = NFC_PROTO_ISO15693_MASK;
+ r = st21nfca_get_iso15693_inventory(hdev, target);
+ if (r < 0)
+ return r;
+ break;
+ default:
+ return -EPROTO;
+ }
+
+ return 0;
+}
+
+static int st21nfca_hci_complete_target_discovered(struct nfc_hci_dev *hdev,
+ u8 gate,
+ struct nfc_target *target)
+{
+ int r;
+ struct sk_buff *nfcid_skb = NULL;
+
+ if (gate == ST21NFCA_RF_READER_F_GATE) {
+ r = nfc_hci_get_param(hdev, ST21NFCA_RF_READER_F_GATE,
+ ST21NFCA_RF_READER_F_NFCID2, &nfcid_skb);
+ if (r < 0)
+ goto exit;
+
+ if (nfcid_skb->len > NFC_SENSF_RES_MAXSIZE) {
+ r = -EPROTO;
+ goto exit;
+ }
+
+ /*
+ * - After the recepton of polling response for type F frame
+ * at 212 or 424 Kbit/s, NFCID2 registry parameters will be
+ * updated.
+ * - After the reception of SEL_RES with NFCIP-1 compliant bit
+ * set for type A frame NFCID1 will be updated
+ */
+ if (nfcid_skb->len > 0) {
+ /* P2P in type F */
+ memcpy(target->sensf_res, nfcid_skb->data,
+ nfcid_skb->len);
+ target->sensf_res_len = nfcid_skb->len;
+ /* NFC Forum Digital Protocol Table 44 */
+ if (target->sensf_res[0] == 0x01 &&
+ target->sensf_res[1] == 0xfe)
+ target->supported_protocols =
+ NFC_PROTO_NFC_DEP_MASK;
+ else
+ target->supported_protocols =
+ NFC_PROTO_FELICA_MASK;
+ } else {
+ kfree_skb(nfcid_skb);
+ /* P2P in type A */
+ r = nfc_hci_get_param(hdev, ST21NFCA_RF_READER_F_GATE,
+ ST21NFCA_RF_READER_F_NFCID1,
+ &nfcid_skb);
+ if (r < 0)
+ goto exit;
+
+ if (nfcid_skb->len > NFC_NFCID1_MAXSIZE) {
+ r = -EPROTO;
+ goto exit;
+ }
+ memcpy(target->sensf_res, nfcid_skb->data,
+ nfcid_skb->len);
+ target->sensf_res_len = nfcid_skb->len;
+ target->supported_protocols = NFC_PROTO_NFC_DEP_MASK;
+ }
+ target->hci_reader_gate = ST21NFCA_RF_READER_F_GATE;
+ }
+ r = 1;
+exit:
+ kfree_skb(nfcid_skb);
+ return r;
+}
+
+#define ST21NFCA_CB_TYPE_READER_ISO15693 1
+static void st21nfca_hci_data_exchange_cb(void *context, struct sk_buff *skb,
+ int err)
+{
+ struct st21nfca_hci_info *info = context;
+
+ switch (info->async_cb_type) {
+ case ST21NFCA_CB_TYPE_READER_ISO15693:
+ if (err == 0)
+ skb_trim(skb, skb->len - 1);
+ info->async_cb(info->async_cb_context, skb, err);
+ break;
+ default:
+ if (err == 0)
+ kfree_skb(skb);
+ break;
+ }
+}
+
+/*
+ * Returns:
+ * <= 0: driver handled the data exchange
+ * 1: driver doesn't especially handle, please do standard processing
+ */
+static int st21nfca_hci_im_transceive(struct nfc_hci_dev *hdev,
+ struct nfc_target *target,
+ struct sk_buff *skb,
+ data_exchange_cb_t cb, void *cb_context)
+{
+ struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
+
+ pr_info(DRIVER_DESC ": %s for gate=%d len=%d\n", __func__,
+ target->hci_reader_gate, skb->len);
+
+ switch (target->hci_reader_gate) {
+ case ST21NFCA_RF_READER_F_GATE:
+ if (target->supported_protocols == NFC_PROTO_NFC_DEP_MASK)
+ return st21nfca_im_send_dep_req(hdev, skb);
+
+ *skb_push(skb, 1) = 0x1a;
+ return nfc_hci_send_cmd_async(hdev, target->hci_reader_gate,
+ ST21NFCA_WR_XCHG_DATA, skb->data,
+ skb->len, cb, cb_context);
+ case ST21NFCA_RF_READER_14443_3_A_GATE:
+ *skb_push(skb, 1) = 0x1a; /* CTR, see spec:10.2.2.1 */
+
+ return nfc_hci_send_cmd_async(hdev, target->hci_reader_gate,
+ ST21NFCA_WR_XCHG_DATA, skb->data,
+ skb->len, cb, cb_context);
+ case ST21NFCA_RF_READER_ISO15693_GATE:
+ info->async_cb_type = ST21NFCA_CB_TYPE_READER_ISO15693;
+ info->async_cb = cb;
+ info->async_cb_context = cb_context;
+
+ *skb_push(skb, 1) = 0x17;
+
+ return nfc_hci_send_cmd_async(hdev, target->hci_reader_gate,
+ ST21NFCA_WR_XCHG_DATA, skb->data,
+ skb->len,
+ st21nfca_hci_data_exchange_cb,
+ info);
+ break;
+ default:
+ return 1;
+ }
+}
+
+static int st21nfca_hci_tm_send(struct nfc_hci_dev *hdev, struct sk_buff *skb)
+{
+ return st21nfca_tm_send_dep_res(hdev, skb);
+}
+
+static int st21nfca_hci_check_presence(struct nfc_hci_dev *hdev,
+ struct nfc_target *target)
+{
+ u8 fwi = 0x11;
+
+ switch (target->hci_reader_gate) {
+ case NFC_HCI_RF_READER_A_GATE:
+ case NFC_HCI_RF_READER_B_GATE:
+ /*
+ * PRESENCE_CHECK on those gates is available
+ * However, the answer to this command is taking 3 * fwi
+ * if the card is no present.
+ * Instead, we send an empty I-Frame with a very short
+ * configurable fwi ~604µs.
+ */
+ return nfc_hci_send_cmd(hdev, target->hci_reader_gate,
+ ST21NFCA_WR_XCHG_DATA, &fwi, 1, NULL);
+ case ST21NFCA_RF_READER_14443_3_A_GATE:
+ return nfc_hci_send_cmd(hdev, target->hci_reader_gate,
+ ST21NFCA_RF_READER_CMD_PRESENCE_CHECK,
+ NULL, 0, NULL);
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static void st21nfca_hci_cmd_received(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd,
+ struct sk_buff *skb)
+{
+ struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
+ u8 gate = hdev->pipes[pipe].gate;
+
+ pr_debug("cmd: %x\n", cmd);
+
+ switch (cmd) {
+ case NFC_HCI_ANY_OPEN_PIPE:
+ if (gate != ST21NFCA_APDU_READER_GATE &&
+ hdev->pipes[pipe].dest_host != NFC_HCI_UICC_HOST_ID)
+ info->se_info.count_pipes++;
+
+ if (info->se_info.count_pipes == info->se_info.expected_pipes) {
+ del_timer_sync(&info->se_info.se_active_timer);
+ info->se_info.se_active = false;
+ info->se_info.count_pipes = 0;
+ complete(&info->se_info.req_completion);
+ }
+ break;
+ }
+}
+
+static int st21nfca_admin_event_received(struct nfc_hci_dev *hdev, u8 event,
+ struct sk_buff *skb)
+{
+ struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
+
+ pr_debug("admin event: %x\n", event);
+
+ switch (event) {
+ case ST21NFCA_EVT_HOT_PLUG:
+ if (info->se_info.se_active) {
+ if (!ST21NFCA_EVT_HOT_PLUG_IS_INHIBITED(skb)) {
+ del_timer_sync(&info->se_info.se_active_timer);
+ info->se_info.se_active = false;
+ complete(&info->se_info.req_completion);
+ } else {
+ mod_timer(&info->se_info.se_active_timer,
+ jiffies +
+ msecs_to_jiffies(ST21NFCA_SE_TO_PIPES));
+ }
+ }
+ break;
+ }
+ kfree_skb(skb);
+ return 0;
+}
+
+/*
+ * Returns:
+ * <= 0: driver handled the event, skb consumed
+ * 1: driver does not handle the event, please do standard processing
+ */
+static int st21nfca_hci_event_received(struct nfc_hci_dev *hdev, u8 pipe,
+ u8 event, struct sk_buff *skb)
+{
+ u8 gate = hdev->pipes[pipe].gate;
+ u8 host = hdev->pipes[pipe].dest_host;
+
+ pr_debug("hci event: %d gate: %x\n", event, gate);
+
+ switch (gate) {
+ case NFC_HCI_ADMIN_GATE:
+ return st21nfca_admin_event_received(hdev, event, skb);
+ case ST21NFCA_RF_CARD_F_GATE:
+ return st21nfca_dep_event_received(hdev, event, skb);
+ case ST21NFCA_CONNECTIVITY_GATE:
+ return st21nfca_connectivity_event_received(hdev, host,
+ event, skb);
+ case ST21NFCA_APDU_READER_GATE:
+ return st21nfca_apdu_reader_event_received(hdev, event, skb);
+ default:
+ return 1;
+ }
+}
+
+static struct nfc_hci_ops st21nfca_hci_ops = {
+ .open = st21nfca_hci_open,
+ .close = st21nfca_hci_close,
+ .load_session = st21nfca_hci_load_session,
+ .hci_ready = st21nfca_hci_ready,
+ .xmit = st21nfca_hci_xmit,
+ .start_poll = st21nfca_hci_start_poll,
+ .stop_poll = st21nfca_hci_stop_poll,
+ .dep_link_up = st21nfca_hci_dep_link_up,
+ .dep_link_down = st21nfca_hci_dep_link_down,
+ .target_from_gate = st21nfca_hci_target_from_gate,
+ .complete_target_discovered = st21nfca_hci_complete_target_discovered,
+ .im_transceive = st21nfca_hci_im_transceive,
+ .tm_send = st21nfca_hci_tm_send,
+ .check_presence = st21nfca_hci_check_presence,
+ .event_received = st21nfca_hci_event_received,
+ .cmd_received = st21nfca_hci_cmd_received,
+ .discover_se = st21nfca_hci_discover_se,
+ .enable_se = st21nfca_hci_enable_se,
+ .disable_se = st21nfca_hci_disable_se,
+ .se_io = st21nfca_hci_se_io,
+};
+
+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_hci_info *info;
+ int r = 0;
+ int dev_num;
+ u32 protocols;
+ struct nfc_hci_init_data init_data;
+ unsigned long quirks = 0;
+
+ info = kzalloc(sizeof(struct st21nfca_hci_info), GFP_KERNEL);
+ if (!info) {
+ r = -ENOMEM;
+ goto err_alloc_hdev;
+ }
+
+ info->phy_ops = phy_ops;
+ info->phy_id = phy_id;
+ info->state = ST21NFCA_ST_COLD;
+ mutex_init(&info->info_lock);
+
+ init_data.gate_count = ARRAY_SIZE(st21nfca_gates);
+
+ memcpy(init_data.gates, st21nfca_gates, sizeof(st21nfca_gates));
+
+ /*
+ * Session id must include the driver name + i2c bus addr
+ * persistent info to discriminate 2 identical chips
+ */
+ dev_num = find_first_zero_bit(dev_mask, ST21NFCA_NUM_DEVICES);
+
+ if (dev_num >= ST21NFCA_NUM_DEVICES)
+ return -ENODEV;
+
+ set_bit(dev_num, dev_mask);
+
+ scnprintf(init_data.session_id, sizeof(init_data.session_id), "%s%2x",
+ "ST21AH", dev_num);
+
+ protocols = NFC_PROTO_JEWEL_MASK |
+ NFC_PROTO_MIFARE_MASK |
+ NFC_PROTO_FELICA_MASK |
+ NFC_PROTO_ISO14443_MASK |
+ NFC_PROTO_ISO14443_B_MASK |
+ NFC_PROTO_ISO15693_MASK |
+ NFC_PROTO_NFC_DEP_MASK;
+
+ set_bit(NFC_HCI_QUIRK_SHORT_CLEAR, &quirks);
+
+ info->hdev =
+ nfc_hci_allocate_device(&st21nfca_hci_ops, &init_data, quirks,
+ protocols, llc_name,
+ phy_headroom + ST21NFCA_CMDS_HEADROOM,
+ phy_tailroom, phy_payload);
+
+ if (!info->hdev) {
+ pr_err("Cannot allocate nfc hdev.\n");
+ r = -ENOMEM;
+ goto err_alloc_hdev;
+ }
+
+ info->se_status = se_status;
+
+ nfc_hci_set_clientdata(info->hdev, info);
+
+ r = nfc_hci_register_device(info->hdev);
+ if (r)
+ goto err_regdev;
+
+ *hdev = info->hdev;
+ st21nfca_dep_init(info->hdev);
+ st21nfca_se_init(info->hdev);
+
+ return 0;
+
+err_regdev:
+ nfc_hci_free_device(info->hdev);
+
+err_alloc_hdev:
+ kfree(info);
+
+ return r;
+}
+EXPORT_SYMBOL(st21nfca_hci_probe);
+
+void st21nfca_hci_remove(struct nfc_hci_dev *hdev)
+{
+ struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
+
+ st21nfca_dep_deinit(hdev);
+ st21nfca_se_deinit(hdev);
+ nfc_hci_unregister_device(hdev);
+ nfc_hci_free_device(hdev);
+ kfree(info);
+}
+EXPORT_SYMBOL(st21nfca_hci_remove);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION(DRIVER_DESC);
--- /dev/null
+/*
+ * 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/>.
+ */
+
+#include <net/nfc/hci.h>
+
+#include "st21nfca.h"
+
+#define ST21NFCA_NFCIP1_INITIATOR 0x00
+#define ST21NFCA_NFCIP1_REQ 0xd4
+#define ST21NFCA_NFCIP1_RES 0xd5
+#define ST21NFCA_NFCIP1_ATR_REQ 0x00
+#define ST21NFCA_NFCIP1_ATR_RES 0x01
+#define ST21NFCA_NFCIP1_PSL_REQ 0x04
+#define ST21NFCA_NFCIP1_PSL_RES 0x05
+#define ST21NFCA_NFCIP1_DEP_REQ 0x06
+#define ST21NFCA_NFCIP1_DEP_RES 0x07
+
+#define ST21NFCA_NFC_DEP_PFB_PNI(pfb) ((pfb) & 0x03)
+#define ST21NFCA_NFC_DEP_PFB_TYPE(pfb) ((pfb) & 0xE0)
+#define ST21NFCA_NFC_DEP_PFB_IS_TIMEOUT(pfb) \
+ ((pfb) & ST21NFCA_NFC_DEP_PFB_TIMEOUT_BIT)
+#define ST21NFCA_NFC_DEP_DID_BIT_SET(pfb) ((pfb) & 0x04)
+#define ST21NFCA_NFC_DEP_NAD_BIT_SET(pfb) ((pfb) & 0x08)
+#define ST21NFCA_NFC_DEP_PFB_TIMEOUT_BIT 0x10
+
+#define ST21NFCA_NFC_DEP_PFB_IS_TIMEOUT(pfb) \
+ ((pfb) & ST21NFCA_NFC_DEP_PFB_TIMEOUT_BIT)
+
+#define ST21NFCA_NFC_DEP_PFB_I_PDU 0x00
+#define ST21NFCA_NFC_DEP_PFB_ACK_NACK_PDU 0x40
+#define ST21NFCA_NFC_DEP_PFB_SUPERVISOR_PDU 0x80
+
+#define ST21NFCA_ATR_REQ_MIN_SIZE 17
+#define ST21NFCA_ATR_REQ_MAX_SIZE 65
+#define ST21NFCA_LR_BITS_PAYLOAD_SIZE_254B 0x30
+#define ST21NFCA_GB_BIT 0x02
+
+#define ST21NFCA_EVT_SEND_DATA 0x10
+#define ST21NFCA_EVT_FIELD_ON 0x11
+#define ST21NFCA_EVT_CARD_DEACTIVATED 0x12
+#define ST21NFCA_EVT_CARD_ACTIVATED 0x13
+#define ST21NFCA_EVT_FIELD_OFF 0x14
+
+#define ST21NFCA_EVT_CARD_F_BITRATE 0x16
+#define ST21NFCA_EVT_READER_F_BITRATE 0x13
+#define ST21NFCA_PSL_REQ_SEND_SPEED(brs) (brs & 0x38)
+#define ST21NFCA_PSL_REQ_RECV_SPEED(brs) (brs & 0x07)
+#define ST21NFCA_PP2LRI(pp) ((pp & 0x30) >> 4)
+#define ST21NFCA_CARD_BITRATE_212 0x01
+#define ST21NFCA_CARD_BITRATE_424 0x02
+
+#define ST21NFCA_DEFAULT_TIMEOUT 0x0a
+
+
+#define PROTOCOL_ERR(req) pr_err("%d: ST21NFCA Protocol error: %s\n", \
+ __LINE__, req)
+
+struct st21nfca_atr_req {
+ u8 length;
+ u8 cmd0;
+ u8 cmd1;
+ u8 nfcid3[NFC_NFCID3_MAXSIZE];
+ u8 did;
+ u8 bsi;
+ u8 bri;
+ u8 ppi;
+ u8 gbi[0];
+} __packed;
+
+struct st21nfca_atr_res {
+ u8 length;
+ u8 cmd0;
+ u8 cmd1;
+ u8 nfcid3[NFC_NFCID3_MAXSIZE];
+ u8 did;
+ u8 bsi;
+ u8 bri;
+ u8 to;
+ u8 ppi;
+ u8 gbi[0];
+} __packed;
+
+struct st21nfca_psl_req {
+ u8 length;
+ u8 cmd0;
+ u8 cmd1;
+ u8 did;
+ u8 brs;
+ u8 fsl;
+} __packed;
+
+struct st21nfca_psl_res {
+ u8 length;
+ u8 cmd0;
+ u8 cmd1;
+ u8 did;
+} __packed;
+
+struct st21nfca_dep_req_res {
+ u8 length;
+ u8 cmd0;
+ u8 cmd1;
+ u8 pfb;
+ u8 did;
+ u8 nad;
+} __packed;
+
+static void st21nfca_tx_work(struct work_struct *work)
+{
+ struct st21nfca_hci_info *info = container_of(work,
+ struct st21nfca_hci_info,
+ dep_info.tx_work);
+
+ struct nfc_dev *dev;
+ struct sk_buff *skb;
+
+ if (info) {
+ dev = info->hdev->ndev;
+ skb = info->dep_info.tx_pending;
+
+ device_lock(&dev->dev);
+
+ nfc_hci_send_cmd_async(info->hdev, ST21NFCA_RF_READER_F_GATE,
+ ST21NFCA_WR_XCHG_DATA, skb->data, skb->len,
+ info->async_cb, info);
+ device_unlock(&dev->dev);
+ kfree_skb(skb);
+ }
+}
+
+static void st21nfca_im_send_pdu(struct st21nfca_hci_info *info,
+ struct sk_buff *skb)
+{
+ info->dep_info.tx_pending = skb;
+ schedule_work(&info->dep_info.tx_work);
+}
+
+static int st21nfca_tm_send_atr_res(struct nfc_hci_dev *hdev,
+ struct st21nfca_atr_req *atr_req)
+{
+ struct st21nfca_atr_res *atr_res;
+ struct sk_buff *skb;
+ size_t gb_len;
+ int r;
+ struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
+
+ gb_len = atr_req->length - sizeof(struct st21nfca_atr_req);
+ skb = alloc_skb(atr_req->length + 1, GFP_KERNEL);
+ if (!skb)
+ return -ENOMEM;
+
+ skb_put(skb, sizeof(struct st21nfca_atr_res));
+
+ atr_res = (struct st21nfca_atr_res *)skb->data;
+ memset(atr_res, 0, sizeof(struct st21nfca_atr_res));
+
+ atr_res->length = atr_req->length + 1;
+ atr_res->cmd0 = ST21NFCA_NFCIP1_RES;
+ atr_res->cmd1 = ST21NFCA_NFCIP1_ATR_RES;
+
+ memcpy(atr_res->nfcid3, atr_req->nfcid3, 6);
+ atr_res->bsi = 0x00;
+ atr_res->bri = 0x00;
+ atr_res->to = ST21NFCA_DEFAULT_TIMEOUT;
+ atr_res->ppi = ST21NFCA_LR_BITS_PAYLOAD_SIZE_254B;
+
+ if (gb_len) {
+ skb_put(skb, gb_len);
+
+ atr_res->ppi |= ST21NFCA_GB_BIT;
+ memcpy(atr_res->gbi, atr_req->gbi, gb_len);
+ r = nfc_set_remote_general_bytes(hdev->ndev, atr_res->gbi,
+ gb_len);
+ if (r < 0)
+ return r;
+ }
+
+ info->dep_info.curr_nfc_dep_pni = 0;
+
+ r = nfc_hci_send_event(hdev, ST21NFCA_RF_CARD_F_GATE,
+ ST21NFCA_EVT_SEND_DATA, skb->data, skb->len);
+ kfree_skb(skb);
+ return r;
+}
+
+static int st21nfca_tm_recv_atr_req(struct nfc_hci_dev *hdev,
+ struct sk_buff *skb)
+{
+ struct st21nfca_atr_req *atr_req;
+ size_t gb_len;
+ int r;
+
+ skb_trim(skb, skb->len - 1);
+
+ if (!skb->len) {
+ r = -EIO;
+ goto exit;
+ }
+
+ if (skb->len < ST21NFCA_ATR_REQ_MIN_SIZE) {
+ r = -EPROTO;
+ goto exit;
+ }
+
+ atr_req = (struct st21nfca_atr_req *)skb->data;
+
+ if (atr_req->length < sizeof(struct st21nfca_atr_req)) {
+ r = -EPROTO;
+ goto exit;
+ }
+
+ r = st21nfca_tm_send_atr_res(hdev, atr_req);
+ if (r)
+ goto exit;
+
+ gb_len = skb->len - sizeof(struct st21nfca_atr_req);
+
+ r = nfc_tm_activated(hdev->ndev, NFC_PROTO_NFC_DEP_MASK,
+ NFC_COMM_PASSIVE, atr_req->gbi, gb_len);
+ if (r)
+ goto exit;
+
+ r = 0;
+
+exit:
+ return r;
+}
+
+static int st21nfca_tm_send_psl_res(struct nfc_hci_dev *hdev,
+ struct st21nfca_psl_req *psl_req)
+{
+ struct st21nfca_psl_res *psl_res;
+ struct sk_buff *skb;
+ u8 bitrate[2] = {0, 0};
+ int r;
+
+ skb = alloc_skb(sizeof(struct st21nfca_psl_res), GFP_KERNEL);
+ if (!skb)
+ return -ENOMEM;
+ skb_put(skb, sizeof(struct st21nfca_psl_res));
+
+ psl_res = (struct st21nfca_psl_res *)skb->data;
+
+ psl_res->length = sizeof(struct st21nfca_psl_res);
+ psl_res->cmd0 = ST21NFCA_NFCIP1_RES;
+ psl_res->cmd1 = ST21NFCA_NFCIP1_PSL_RES;
+ psl_res->did = psl_req->did;
+
+ r = nfc_hci_send_event(hdev, ST21NFCA_RF_CARD_F_GATE,
+ ST21NFCA_EVT_SEND_DATA, skb->data, skb->len);
+ if (r < 0)
+ goto error;
+
+ /*
+ * ST21NFCA only support P2P passive.
+ * PSL_REQ BRS value != 0 has only a meaning to
+ * change technology to type F.
+ * We change to BITRATE 424Kbits.
+ * In other case switch to BITRATE 106Kbits.
+ */
+ if (ST21NFCA_PSL_REQ_SEND_SPEED(psl_req->brs) &&
+ ST21NFCA_PSL_REQ_RECV_SPEED(psl_req->brs)) {
+ bitrate[0] = ST21NFCA_CARD_BITRATE_424;
+ bitrate[1] = ST21NFCA_CARD_BITRATE_424;
+ }
+
+ /* Send an event to change bitrate change event to card f */
+ r = nfc_hci_send_event(hdev, ST21NFCA_RF_CARD_F_GATE,
+ ST21NFCA_EVT_CARD_F_BITRATE, bitrate, 2);
+error:
+ kfree_skb(skb);
+ return r;
+}
+
+static int st21nfca_tm_recv_psl_req(struct nfc_hci_dev *hdev,
+ struct sk_buff *skb)
+{
+ struct st21nfca_psl_req *psl_req;
+ int r;
+
+ skb_trim(skb, skb->len - 1);
+
+ if (!skb->len) {
+ r = -EIO;
+ goto exit;
+ }
+
+ psl_req = (struct st21nfca_psl_req *)skb->data;
+
+ if (skb->len < sizeof(struct st21nfca_psl_req)) {
+ r = -EIO;
+ goto exit;
+ }
+
+ r = st21nfca_tm_send_psl_res(hdev, psl_req);
+exit:
+ return r;
+}
+
+int st21nfca_tm_send_dep_res(struct nfc_hci_dev *hdev, struct sk_buff *skb)
+{
+ int r;
+ struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
+
+ *skb_push(skb, 1) = info->dep_info.curr_nfc_dep_pni;
+ *skb_push(skb, 1) = ST21NFCA_NFCIP1_DEP_RES;
+ *skb_push(skb, 1) = ST21NFCA_NFCIP1_RES;
+ *skb_push(skb, 1) = skb->len;
+
+ r = nfc_hci_send_event(hdev, ST21NFCA_RF_CARD_F_GATE,
+ ST21NFCA_EVT_SEND_DATA, skb->data, skb->len);
+ kfree_skb(skb);
+
+ return r;
+}
+EXPORT_SYMBOL(st21nfca_tm_send_dep_res);
+
+static int st21nfca_tm_recv_dep_req(struct nfc_hci_dev *hdev,
+ struct sk_buff *skb)
+{
+ struct st21nfca_dep_req_res *dep_req;
+ u8 size;
+ int r;
+ struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
+
+ skb_trim(skb, skb->len - 1);
+
+ size = 4;
+
+ dep_req = (struct st21nfca_dep_req_res *)skb->data;
+ if (skb->len < size) {
+ r = -EIO;
+ goto exit;
+ }
+
+ if (ST21NFCA_NFC_DEP_DID_BIT_SET(dep_req->pfb))
+ size++;
+ if (ST21NFCA_NFC_DEP_NAD_BIT_SET(dep_req->pfb))
+ size++;
+
+ if (skb->len < size) {
+ r = -EIO;
+ goto exit;
+ }
+
+ /* Receiving DEP_REQ - Decoding */
+ switch (ST21NFCA_NFC_DEP_PFB_TYPE(dep_req->pfb)) {
+ case ST21NFCA_NFC_DEP_PFB_I_PDU:
+ info->dep_info.curr_nfc_dep_pni =
+ ST21NFCA_NFC_DEP_PFB_PNI(dep_req->pfb);
+ break;
+ case ST21NFCA_NFC_DEP_PFB_ACK_NACK_PDU:
+ pr_err("Received a ACK/NACK PDU\n");
+ break;
+ case ST21NFCA_NFC_DEP_PFB_SUPERVISOR_PDU:
+ pr_err("Received a SUPERVISOR PDU\n");
+ break;
+ }
+
+ skb_pull(skb, size);
+
+ return nfc_tm_data_received(hdev->ndev, skb);
+exit:
+ return r;
+}
+
+static int st21nfca_tm_event_send_data(struct nfc_hci_dev *hdev,
+ struct sk_buff *skb)
+{
+ u8 cmd0, cmd1;
+ int r;
+
+ cmd0 = skb->data[1];
+ switch (cmd0) {
+ case ST21NFCA_NFCIP1_REQ:
+ cmd1 = skb->data[2];
+ switch (cmd1) {
+ case ST21NFCA_NFCIP1_ATR_REQ:
+ r = st21nfca_tm_recv_atr_req(hdev, skb);
+ break;
+ case ST21NFCA_NFCIP1_PSL_REQ:
+ r = st21nfca_tm_recv_psl_req(hdev, skb);
+ break;
+ case ST21NFCA_NFCIP1_DEP_REQ:
+ r = st21nfca_tm_recv_dep_req(hdev, skb);
+ break;
+ default:
+ return 1;
+ }
+ default:
+ return 1;
+ }
+ return r;
+}
+
+/*
+ * Returns:
+ * <= 0: driver handled the event, skb consumed
+ * 1: driver does not handle the event, please do standard processing
+ */
+int st21nfca_dep_event_received(struct nfc_hci_dev *hdev,
+ u8 event, struct sk_buff *skb)
+{
+ int r = 0;
+ struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
+
+ pr_debug("dep event: %d\n", event);
+
+ switch (event) {
+ case ST21NFCA_EVT_CARD_ACTIVATED:
+ info->dep_info.curr_nfc_dep_pni = 0;
+ break;
+ case ST21NFCA_EVT_CARD_DEACTIVATED:
+ break;
+ case ST21NFCA_EVT_FIELD_ON:
+ break;
+ case ST21NFCA_EVT_FIELD_OFF:
+ break;
+ case ST21NFCA_EVT_SEND_DATA:
+ r = st21nfca_tm_event_send_data(hdev, skb);
+ if (r < 0)
+ return r;
+ return 0;
+ default:
+ return 1;
+ }
+ kfree_skb(skb);
+ return r;
+}
+EXPORT_SYMBOL(st21nfca_dep_event_received);
+
+static void st21nfca_im_send_psl_req(struct nfc_hci_dev *hdev, u8 did, u8 bsi,
+ u8 bri, u8 lri)
+{
+ struct sk_buff *skb;
+ struct st21nfca_psl_req *psl_req;
+ struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
+
+ skb =
+ alloc_skb(sizeof(struct st21nfca_psl_req) + 1, GFP_KERNEL);
+ if (!skb)
+ return;
+ skb_reserve(skb, 1);
+
+ skb_put(skb, sizeof(struct st21nfca_psl_req));
+ psl_req = (struct st21nfca_psl_req *) skb->data;
+
+ psl_req->length = sizeof(struct st21nfca_psl_req);
+ psl_req->cmd0 = ST21NFCA_NFCIP1_REQ;
+ psl_req->cmd1 = ST21NFCA_NFCIP1_PSL_REQ;
+ psl_req->did = did;
+ psl_req->brs = (0x30 & bsi << 4) | (bri & 0x03);
+ psl_req->fsl = lri;
+
+ *skb_push(skb, 1) = info->dep_info.to | 0x10;
+
+ st21nfca_im_send_pdu(info, skb);
+}
+
+#define ST21NFCA_CB_TYPE_READER_F 1
+static void st21nfca_im_recv_atr_res_cb(void *context, struct sk_buff *skb,
+ int err)
+{
+ struct st21nfca_hci_info *info = context;
+ struct st21nfca_atr_res *atr_res;
+ int r;
+
+ if (err != 0)
+ return;
+
+ if (!skb)
+ return;
+
+ switch (info->async_cb_type) {
+ case ST21NFCA_CB_TYPE_READER_F:
+ skb_trim(skb, skb->len - 1);
+ atr_res = (struct st21nfca_atr_res *)skb->data;
+ r = nfc_set_remote_general_bytes(info->hdev->ndev,
+ atr_res->gbi,
+ skb->len - sizeof(struct st21nfca_atr_res));
+ if (r < 0)
+ return;
+
+ if (atr_res->to >= 0x0e)
+ info->dep_info.to = 0x0e;
+ else
+ info->dep_info.to = atr_res->to + 1;
+
+ info->dep_info.to |= 0x10;
+
+ r = nfc_dep_link_is_up(info->hdev->ndev, info->dep_info.idx,
+ NFC_COMM_PASSIVE, NFC_RF_INITIATOR);
+ if (r < 0)
+ return;
+
+ info->dep_info.curr_nfc_dep_pni = 0;
+ if (ST21NFCA_PP2LRI(atr_res->ppi) != info->dep_info.lri)
+ st21nfca_im_send_psl_req(info->hdev, atr_res->did,
+ atr_res->bsi, atr_res->bri,
+ ST21NFCA_PP2LRI(atr_res->ppi));
+ break;
+ default:
+ kfree_skb(skb);
+ break;
+ }
+}
+
+int st21nfca_im_send_atr_req(struct nfc_hci_dev *hdev, u8 *gb, size_t gb_len)
+{
+ struct sk_buff *skb;
+ struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
+ struct st21nfca_atr_req *atr_req;
+ struct nfc_target *target;
+ uint size;
+
+ info->dep_info.to = ST21NFCA_DEFAULT_TIMEOUT;
+ size = ST21NFCA_ATR_REQ_MIN_SIZE + gb_len;
+ if (size > ST21NFCA_ATR_REQ_MAX_SIZE) {
+ PROTOCOL_ERR("14.6.1.1");
+ return -EINVAL;
+ }
+
+ skb =
+ alloc_skb(sizeof(struct st21nfca_atr_req) + gb_len + 1, GFP_KERNEL);
+ if (!skb)
+ return -ENOMEM;
+
+ skb_reserve(skb, 1);
+
+ skb_put(skb, sizeof(struct st21nfca_atr_req));
+
+ atr_req = (struct st21nfca_atr_req *)skb->data;
+ memset(atr_req, 0, sizeof(struct st21nfca_atr_req));
+
+ atr_req->cmd0 = ST21NFCA_NFCIP1_REQ;
+ atr_req->cmd1 = ST21NFCA_NFCIP1_ATR_REQ;
+ memset(atr_req->nfcid3, 0, NFC_NFCID3_MAXSIZE);
+ target = hdev->ndev->targets;
+
+ if (target->sensf_res_len > 0)
+ memcpy(atr_req->nfcid3, target->sensf_res,
+ target->sensf_res_len);
+ else
+ get_random_bytes(atr_req->nfcid3, NFC_NFCID3_MAXSIZE);
+
+ atr_req->did = 0x0;
+
+ atr_req->bsi = 0x00;
+ atr_req->bri = 0x00;
+ atr_req->ppi = ST21NFCA_LR_BITS_PAYLOAD_SIZE_254B;
+ if (gb_len) {
+ atr_req->ppi |= ST21NFCA_GB_BIT;
+ memcpy(skb_put(skb, gb_len), gb, gb_len);
+ }
+ atr_req->length = sizeof(struct st21nfca_atr_req) + hdev->gb_len;
+
+ *skb_push(skb, 1) = info->dep_info.to | 0x10; /* timeout */
+
+ info->async_cb_type = ST21NFCA_CB_TYPE_READER_F;
+ info->async_cb_context = info;
+ info->async_cb = st21nfca_im_recv_atr_res_cb;
+ info->dep_info.bri = atr_req->bri;
+ info->dep_info.bsi = atr_req->bsi;
+ info->dep_info.lri = ST21NFCA_PP2LRI(atr_req->ppi);
+
+ return nfc_hci_send_cmd_async(hdev, ST21NFCA_RF_READER_F_GATE,
+ ST21NFCA_WR_XCHG_DATA, skb->data,
+ skb->len, info->async_cb, info);
+}
+EXPORT_SYMBOL(st21nfca_im_send_atr_req);
+
+static void st21nfca_im_recv_dep_res_cb(void *context, struct sk_buff *skb,
+ int err)
+{
+ struct st21nfca_hci_info *info = context;
+ struct st21nfca_dep_req_res *dep_res;
+
+ int size;
+
+ if (err != 0)
+ return;
+
+ if (!skb)
+ return;
+
+ switch (info->async_cb_type) {
+ case ST21NFCA_CB_TYPE_READER_F:
+ dep_res = (struct st21nfca_dep_req_res *)skb->data;
+
+ size = 3;
+ if (skb->len < size)
+ goto exit;
+
+ if (ST21NFCA_NFC_DEP_DID_BIT_SET(dep_res->pfb))
+ size++;
+ if (ST21NFCA_NFC_DEP_NAD_BIT_SET(dep_res->pfb))
+ size++;
+
+ if (skb->len < size)
+ goto exit;
+
+ skb_trim(skb, skb->len - 1);
+
+ /* Receiving DEP_REQ - Decoding */
+ switch (ST21NFCA_NFC_DEP_PFB_TYPE(dep_res->pfb)) {
+ case ST21NFCA_NFC_DEP_PFB_ACK_NACK_PDU:
+ pr_err("Received a ACK/NACK PDU\n");
+ case ST21NFCA_NFC_DEP_PFB_I_PDU:
+ info->dep_info.curr_nfc_dep_pni =
+ ST21NFCA_NFC_DEP_PFB_PNI(dep_res->pfb + 1);
+ size++;
+ skb_pull(skb, size);
+ nfc_tm_data_received(info->hdev->ndev, skb);
+ break;
+ case ST21NFCA_NFC_DEP_PFB_SUPERVISOR_PDU:
+ pr_err("Received a SUPERVISOR PDU\n");
+ skb_pull(skb, size);
+ *skb_push(skb, 1) = ST21NFCA_NFCIP1_DEP_REQ;
+ *skb_push(skb, 1) = ST21NFCA_NFCIP1_REQ;
+ *skb_push(skb, 1) = skb->len;
+ *skb_push(skb, 1) = info->dep_info.to | 0x10;
+
+ st21nfca_im_send_pdu(info, skb);
+ break;
+ }
+
+ return;
+ default:
+ break;
+ }
+
+exit:
+ kfree_skb(skb);
+}
+
+int st21nfca_im_send_dep_req(struct nfc_hci_dev *hdev, struct sk_buff *skb)
+{
+ struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
+
+ info->async_cb_type = ST21NFCA_CB_TYPE_READER_F;
+ info->async_cb_context = info;
+ info->async_cb = st21nfca_im_recv_dep_res_cb;
+
+ *skb_push(skb, 1) = info->dep_info.curr_nfc_dep_pni;
+ *skb_push(skb, 1) = ST21NFCA_NFCIP1_DEP_REQ;
+ *skb_push(skb, 1) = ST21NFCA_NFCIP1_REQ;
+ *skb_push(skb, 1) = skb->len;
+
+ *skb_push(skb, 1) = info->dep_info.to | 0x10;
+
+ return nfc_hci_send_cmd_async(hdev, ST21NFCA_RF_READER_F_GATE,
+ ST21NFCA_WR_XCHG_DATA,
+ skb->data, skb->len,
+ info->async_cb, info);
+}
+EXPORT_SYMBOL(st21nfca_im_send_dep_req);
+
+void st21nfca_dep_init(struct nfc_hci_dev *hdev)
+{
+ struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
+
+ INIT_WORK(&info->dep_info.tx_work, st21nfca_tx_work);
+ info->dep_info.curr_nfc_dep_pni = 0;
+ info->dep_info.idx = 0;
+ info->dep_info.to = ST21NFCA_DEFAULT_TIMEOUT;
+}
+EXPORT_SYMBOL(st21nfca_dep_init);
+
+void st21nfca_dep_deinit(struct nfc_hci_dev *hdev)
+{
+ struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
+
+ cancel_work_sync(&info->dep_info.tx_work);
+}
+EXPORT_SYMBOL(st21nfca_dep_deinit);
--- /dev/null
+/*
+ * 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/>.
+ */
+
+#include <net/nfc/hci.h>
+
+#include "st21nfca.h"
+
+#define ST21NFCA_EVT_UICC_ACTIVATE 0x10
+#define ST21NFCA_EVT_UICC_DEACTIVATE 0x13
+#define ST21NFCA_EVT_SE_HARD_RESET 0x20
+#define ST21NFCA_EVT_SE_SOFT_RESET 0x11
+#define ST21NFCA_EVT_SE_END_OF_APDU_TRANSFER 0x21
+#define ST21NFCA_EVT_SE_ACTIVATE 0x22
+#define ST21NFCA_EVT_SE_DEACTIVATE 0x23
+
+#define ST21NFCA_EVT_TRANSMIT_DATA 0x10
+#define ST21NFCA_EVT_WTX_REQUEST 0x11
+
+#define ST21NFCA_EVT_CONNECTIVITY 0x10
+#define ST21NFCA_EVT_TRANSACTION 0x12
+
+#define ST21NFCA_ESE_HOST_ID 0xc0
+
+#define ST21NFCA_SE_TO_HOT_PLUG 1000
+/* Connectivity pipe only */
+#define ST21NFCA_SE_COUNT_PIPE_UICC 0x01
+/* Connectivity + APDU Reader pipe */
+#define ST21NFCA_SE_COUNT_PIPE_EMBEDDED 0x02
+
+#define ST21NFCA_SE_MODE_OFF 0x00
+#define ST21NFCA_SE_MODE_ON 0x01
+
+#define ST21NFCA_PARAM_ATR 0x01
+#define ST21NFCA_ATR_DEFAULT_BWI 0x04
+
+/*
+ * WT = 2^BWI/10[s], convert into msecs and add a secure
+ * room by increasing by 2 this timeout
+ */
+#define ST21NFCA_BWI_TO_TIMEOUT(x) ((1 << x) * 200)
+#define ST21NFCA_ATR_GET_Y_FROM_TD(x) (x >> 4)
+
+/* If TA is present bit 0 is set */
+#define ST21NFCA_ATR_TA_PRESENT(x) (x & 0x01)
+/* If TB is present bit 1 is set */
+#define ST21NFCA_ATR_TB_PRESENT(x) (x & 0x02)
+
+static u8 st21nfca_se_get_bwi(struct nfc_hci_dev *hdev)
+{
+ int i;
+ u8 td;
+ struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
+
+ /* Bits 8 to 5 of the first TB for T=1 encode BWI from zero to nine */
+ for (i = 1; i < ST21NFCA_ESE_MAX_LENGTH; i++) {
+ td = ST21NFCA_ATR_GET_Y_FROM_TD(info->se_info.atr[i]);
+ if (ST21NFCA_ATR_TA_PRESENT(td))
+ i++;
+ if (ST21NFCA_ATR_TB_PRESENT(td)) {
+ i++;
+ return info->se_info.atr[i] >> 4;
+ }
+ }
+ return ST21NFCA_ATR_DEFAULT_BWI;
+}
+
+static void st21nfca_se_get_atr(struct nfc_hci_dev *hdev)
+{
+ int r;
+ struct sk_buff *skb;
+ struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
+
+ r = nfc_hci_get_param(hdev, ST21NFCA_APDU_READER_GATE,
+ ST21NFCA_PARAM_ATR, &skb);
+ if (r < 0)
+ return;
+
+ if (skb->len <= ST21NFCA_ESE_MAX_LENGTH) {
+ memcpy(info->se_info.atr, skb->data, skb->len);
+ info->se_info.wt_timeout =
+ ST21NFCA_BWI_TO_TIMEOUT(st21nfca_se_get_bwi(hdev));
+ }
+ kfree_skb(skb);
+}
+
+static int st21nfca_hci_control_se(struct nfc_hci_dev *hdev, u32 se_idx,
+ u8 state)
+{
+ struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
+ int r;
+ struct sk_buff *sk_host_list;
+ u8 se_event, host_id;
+
+ switch (se_idx) {
+ case NFC_HCI_UICC_HOST_ID:
+ se_event = (state == ST21NFCA_SE_MODE_ON ?
+ ST21NFCA_EVT_UICC_ACTIVATE :
+ ST21NFCA_EVT_UICC_DEACTIVATE);
+
+ info->se_info.count_pipes = 0;
+ info->se_info.expected_pipes = ST21NFCA_SE_COUNT_PIPE_UICC;
+ break;
+ case ST21NFCA_ESE_HOST_ID:
+ se_event = (state == ST21NFCA_SE_MODE_ON ?
+ ST21NFCA_EVT_SE_ACTIVATE :
+ ST21NFCA_EVT_SE_DEACTIVATE);
+
+ info->se_info.count_pipes = 0;
+ info->se_info.expected_pipes = ST21NFCA_SE_COUNT_PIPE_EMBEDDED;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /*
+ * Wait for an EVT_HOT_PLUG in order to
+ * retrieve a relevant host list.
+ */
+ reinit_completion(&info->se_info.req_completion);
+ r = nfc_hci_send_event(hdev, ST21NFCA_DEVICE_MGNT_GATE, se_event,
+ NULL, 0);
+ if (r < 0)
+ return r;
+
+ mod_timer(&info->se_info.se_active_timer, jiffies +
+ msecs_to_jiffies(ST21NFCA_SE_TO_HOT_PLUG));
+ info->se_info.se_active = true;
+
+ /* Ignore return value and check in any case the host_list */
+ wait_for_completion_interruptible(&info->se_info.req_completion);
+
+ r = nfc_hci_get_param(hdev, NFC_HCI_ADMIN_GATE,
+ NFC_HCI_ADMIN_HOST_LIST,
+ &sk_host_list);
+ if (r < 0)
+ return r;
+
+ host_id = sk_host_list->data[sk_host_list->len - 1];
+ kfree_skb(sk_host_list);
+
+ if (state == ST21NFCA_SE_MODE_ON && host_id == se_idx)
+ return se_idx;
+ else if (state == ST21NFCA_SE_MODE_OFF && host_id != se_idx)
+ return se_idx;
+
+ return -1;
+}
+
+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 (info->se_status->is_uicc_present) {
+ nfc_add_se(hdev->ndev, NFC_HCI_UICC_HOST_ID, NFC_SE_UICC);
+ se_count++;
+ }
+
+ if (info->se_status->is_ese_present) {
+ nfc_add_se(hdev->ndev, ST21NFCA_ESE_HOST_ID, NFC_SE_EMBEDDED);
+ se_count++;
+ }
+
+ return !se_count;
+}
+EXPORT_SYMBOL(st21nfca_hci_discover_se);
+
+int st21nfca_hci_enable_se(struct nfc_hci_dev *hdev, u32 se_idx)
+{
+ int r;
+
+ /*
+ * According to upper layer, se_idx == NFC_SE_UICC when
+ * info->se_status->is_uicc_enable is true should never happen.
+ * 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,
+ ST21NFCA_EVT_SE_SOFT_RESET, NULL, 0);
+ if (r < 0)
+ return r;
+ } else if (r < 0) {
+ /*
+ * The activation tentative failed, the secure element
+ * is not connected. Remove from the list.
+ */
+ nfc_remove_se(hdev->ndev, se_idx);
+ return r;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(st21nfca_hci_enable_se);
+
+int st21nfca_hci_disable_se(struct nfc_hci_dev *hdev, u32 se_idx)
+{
+ int r;
+
+ /*
+ * According to upper layer, se_idx == NFC_SE_UICC when
+ * info->se_status->is_uicc_enable is true should never happen
+ * Same for eSE.
+ */
+ r = st21nfca_hci_control_se(hdev, se_idx, ST21NFCA_SE_MODE_OFF);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+EXPORT_SYMBOL(st21nfca_hci_disable_se);
+
+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)
+{
+ struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
+
+ pr_debug("se_io %x\n", se_idx);
+
+ switch (se_idx) {
+ case ST21NFCA_ESE_HOST_ID:
+ info->se_info.cb = cb;
+ info->se_info.cb_context = cb_context;
+ mod_timer(&info->se_info.bwi_timer, jiffies +
+ msecs_to_jiffies(info->se_info.wt_timeout));
+ info->se_info.bwi_active = true;
+ return nfc_hci_send_event(hdev, ST21NFCA_APDU_READER_GATE,
+ ST21NFCA_EVT_TRANSMIT_DATA,
+ apdu, apdu_length);
+ default:
+ return -ENODEV;
+ }
+}
+EXPORT_SYMBOL(st21nfca_hci_se_io);
+
+static void st21nfca_se_wt_timeout(unsigned long data)
+{
+ /*
+ * No answer from the secure element
+ * within the defined timeout.
+ * Let's send a reset request as recovery procedure.
+ * According to the situation, we first try to send a software reset
+ * to the secure element. If the next command is still not
+ * answering in time, we send to the CLF a secure element hardware
+ * reset request.
+ */
+ /* hardware reset managed through VCC_UICC_OUT power supply */
+ u8 param = 0x01;
+ struct st21nfca_hci_info *info = (struct st21nfca_hci_info *) data;
+
+ pr_debug("\n");
+
+ info->se_info.bwi_active = false;
+
+ if (!info->se_info.xch_error) {
+ info->se_info.xch_error = true;
+ nfc_hci_send_event(info->hdev, ST21NFCA_APDU_READER_GATE,
+ ST21NFCA_EVT_SE_SOFT_RESET, NULL, 0);
+ } else {
+ info->se_info.xch_error = false;
+ nfc_hci_send_event(info->hdev, ST21NFCA_DEVICE_MGNT_GATE,
+ ST21NFCA_EVT_SE_HARD_RESET, ¶m, 1);
+ }
+ info->se_info.cb(info->se_info.cb_context, NULL, 0, -ETIME);
+}
+
+static void st21nfca_se_activation_timeout(unsigned long data)
+{
+ struct st21nfca_hci_info *info = (struct st21nfca_hci_info *) data;
+
+ pr_debug("\n");
+
+ info->se_info.se_active = false;
+
+ complete(&info->se_info.req_completion);
+}
+
+/*
+ * Returns:
+ * <= 0: driver handled the event, skb consumed
+ * 1: driver does not handle the event, please do standard processing
+ */
+int st21nfca_connectivity_event_received(struct nfc_hci_dev *hdev, u8 host,
+ u8 event, struct sk_buff *skb)
+{
+ int r = 0;
+ struct device *dev = &hdev->ndev->dev;
+ struct nfc_evt_transaction *transaction;
+
+ pr_debug("connectivity gate event: %x\n", event);
+
+ switch (event) {
+ case ST21NFCA_EVT_CONNECTIVITY:
+ break;
+ case ST21NFCA_EVT_TRANSACTION:
+ /*
+ * According to specification etsi 102 622
+ * 11.2.2.4 EVT_TRANSACTION Table 52
+ * Description Tag Length
+ * AID 81 5 to 16
+ * PARAMETERS 82 0 to 255
+ */
+ if (skb->len < NFC_MIN_AID_LENGTH + 2 &&
+ skb->data[0] != NFC_EVT_TRANSACTION_AID_TAG)
+ return -EPROTO;
+
+ transaction = (struct nfc_evt_transaction *)devm_kzalloc(dev,
+ skb->len - 2, GFP_KERNEL);
+
+ transaction->aid_len = skb->data[1];
+ memcpy(transaction->aid, &skb->data[2],
+ transaction->aid_len);
+
+ /* Check next byte is PARAMETERS tag (82) */
+ if (skb->data[transaction->aid_len + 2] !=
+ NFC_EVT_TRANSACTION_PARAMS_TAG)
+ return -EPROTO;
+
+ transaction->params_len = skb->data[transaction->aid_len + 3];
+ memcpy(transaction->params, skb->data +
+ transaction->aid_len + 4, transaction->params_len);
+
+ r = nfc_se_transaction(hdev->ndev, host, transaction);
+ break;
+ default:
+ return 1;
+ }
+ kfree_skb(skb);
+ return r;
+}
+EXPORT_SYMBOL(st21nfca_connectivity_event_received);
+
+int st21nfca_apdu_reader_event_received(struct nfc_hci_dev *hdev,
+ u8 event, struct sk_buff *skb)
+{
+ int r = 0;
+ struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
+
+ pr_debug("apdu reader gate event: %x\n", event);
+
+ switch (event) {
+ case ST21NFCA_EVT_TRANSMIT_DATA:
+ del_timer_sync(&info->se_info.bwi_timer);
+ info->se_info.bwi_active = false;
+ r = nfc_hci_send_event(hdev, ST21NFCA_DEVICE_MGNT_GATE,
+ ST21NFCA_EVT_SE_END_OF_APDU_TRANSFER, NULL, 0);
+ if (r < 0)
+ goto exit;
+
+ info->se_info.cb(info->se_info.cb_context,
+ skb->data, skb->len, 0);
+ break;
+ case ST21NFCA_EVT_WTX_REQUEST:
+ mod_timer(&info->se_info.bwi_timer, jiffies +
+ msecs_to_jiffies(info->se_info.wt_timeout));
+ break;
+ }
+
+exit:
+ kfree_skb(skb);
+ return r;
+}
+EXPORT_SYMBOL(st21nfca_apdu_reader_event_received);
+
+void st21nfca_se_init(struct nfc_hci_dev *hdev)
+{
+ struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
+
+ init_completion(&info->se_info.req_completion);
+ /* initialize timers */
+ init_timer(&info->se_info.bwi_timer);
+ info->se_info.bwi_timer.data = (unsigned long)info;
+ info->se_info.bwi_timer.function = st21nfca_se_wt_timeout;
+ info->se_info.bwi_active = false;
+
+ init_timer(&info->se_info.se_active_timer);
+ info->se_info.se_active_timer.data = (unsigned long)info;
+ info->se_info.se_active_timer.function = st21nfca_se_activation_timeout;
+ info->se_info.se_active = false;
+
+ info->se_info.count_pipes = 0;
+ info->se_info.expected_pipes = 0;
+
+ info->se_info.xch_error = false;
+
+ info->se_info.wt_timeout =
+ ST21NFCA_BWI_TO_TIMEOUT(ST21NFCA_ATR_DEFAULT_BWI);
+}
+EXPORT_SYMBOL(st21nfca_se_init);
+
+void st21nfca_se_deinit(struct nfc_hci_dev *hdev)
+{
+ struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
+
+ if (info->se_info.bwi_active)
+ del_timer_sync(&info->se_info.bwi_timer);
+ if (info->se_info.se_active)
+ del_timer_sync(&info->se_info.se_active_timer);
+
+ info->se_info.bwi_active = false;
+ info->se_info.se_active = false;
+}
+EXPORT_SYMBOL(st21nfca_se_deinit);
+++ /dev/null
-/*
- * HCI based Driver for STMicroelectronics NFC Chip
- *
- * 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/>.
- */
-
-#include <linux/module.h>
-#include <linux/nfc.h>
-#include <net/nfc/hci.h>
-#include <net/nfc/llc.h>
-
-#include "st21nfca.h"
-#include "st21nfca_dep.h"
-#include "st21nfca_se.h"
-
-#define DRIVER_DESC "HCI NFC driver for ST21NFCA"
-
-#define FULL_VERSION_LEN 3
-
-/* Proprietary gates, events, commands and registers */
-
-/* Commands that apply to all RF readers */
-#define ST21NFCA_RF_READER_CMD_PRESENCE_CHECK 0x30
-
-#define ST21NFCA_RF_READER_ISO15693_GATE 0x12
-#define ST21NFCA_RF_READER_ISO15693_INVENTORY 0x01
-
-/*
- * Reader gate for communication with contact-less cards using Type A
- * protocol ISO14443-3 but not compliant with ISO14443-4
- */
-#define ST21NFCA_RF_READER_14443_3_A_GATE 0x15
-#define ST21NFCA_RF_READER_14443_3_A_UID 0x02
-#define ST21NFCA_RF_READER_14443_3_A_ATQA 0x03
-#define ST21NFCA_RF_READER_14443_3_A_SAK 0x04
-
-#define ST21NFCA_RF_READER_F_DATARATE 0x01
-#define ST21NFCA_RF_READER_F_DATARATE_106 0x01
-#define ST21NFCA_RF_READER_F_DATARATE_212 0x02
-#define ST21NFCA_RF_READER_F_DATARATE_424 0x04
-#define ST21NFCA_RF_READER_F_POL_REQ 0x02
-#define ST21NFCA_RF_READER_F_POL_REQ_DEFAULT 0xffff0000
-#define ST21NFCA_RF_READER_F_NFCID2 0x03
-#define ST21NFCA_RF_READER_F_NFCID1 0x04
-
-#define ST21NFCA_RF_CARD_F_MODE 0x01
-#define ST21NFCA_RF_CARD_F_NFCID2_LIST 0x04
-#define ST21NFCA_RF_CARD_F_NFCID1 0x05
-#define ST21NFCA_RF_CARD_F_SENS_RES 0x06
-#define ST21NFCA_RF_CARD_F_SEL_RES 0x07
-#define ST21NFCA_RF_CARD_F_DATARATE 0x08
-#define ST21NFCA_RF_CARD_F_DATARATE_212_424 0x01
-
-#define ST21NFCA_DEVICE_MGNT_PIPE 0x02
-
-#define ST21NFCA_DM_GETINFO 0x13
-#define ST21NFCA_DM_GETINFO_PIPE_LIST 0x02
-#define ST21NFCA_DM_GETINFO_PIPE_INFO 0x01
-#define ST21NFCA_DM_PIPE_CREATED 0x02
-#define ST21NFCA_DM_PIPE_OPEN 0x04
-#define ST21NFCA_DM_RF_ACTIVE 0x80
-#define ST21NFCA_DM_DISCONNECT 0x30
-
-#define ST21NFCA_DM_IS_PIPE_OPEN(p) \
- ((p & 0x0f) == (ST21NFCA_DM_PIPE_CREATED | ST21NFCA_DM_PIPE_OPEN))
-
-#define ST21NFCA_NFC_MODE 0x03 /* NFC_MODE parameter*/
-
-#define ST21NFCA_EVT_HOT_PLUG 0x03
-#define ST21NFCA_EVT_HOT_PLUG_IS_INHIBITED(x) (x->data[0] & 0x80)
-
-#define ST21NFCA_SE_TO_PIPES 2000
-
-static DECLARE_BITMAP(dev_mask, ST21NFCA_NUM_DEVICES);
-
-static struct nfc_hci_gate st21nfca_gates[] = {
- {NFC_HCI_ADMIN_GATE, NFC_HCI_ADMIN_PIPE},
- {NFC_HCI_LOOPBACK_GATE, NFC_HCI_INVALID_PIPE},
- {NFC_HCI_ID_MGMT_GATE, NFC_HCI_INVALID_PIPE},
- {NFC_HCI_LINK_MGMT_GATE, NFC_HCI_LINK_MGMT_PIPE},
- {NFC_HCI_RF_READER_B_GATE, NFC_HCI_INVALID_PIPE},
- {NFC_HCI_RF_READER_A_GATE, NFC_HCI_INVALID_PIPE},
- {ST21NFCA_DEVICE_MGNT_GATE, ST21NFCA_DEVICE_MGNT_PIPE},
- {ST21NFCA_RF_READER_F_GATE, NFC_HCI_INVALID_PIPE},
- {ST21NFCA_RF_READER_14443_3_A_GATE, NFC_HCI_INVALID_PIPE},
- {ST21NFCA_RF_READER_ISO15693_GATE, NFC_HCI_INVALID_PIPE},
- {ST21NFCA_RF_CARD_F_GATE, NFC_HCI_INVALID_PIPE},
-
- /* Secure element pipes are created by secure element host */
- {ST21NFCA_CONNECTIVITY_GATE, NFC_HCI_DO_NOT_CREATE_PIPE},
- {ST21NFCA_APDU_READER_GATE, NFC_HCI_DO_NOT_CREATE_PIPE},
-};
-
-struct st21nfca_pipe_info {
- u8 pipe_state;
- u8 src_host_id;
- u8 src_gate_id;
- u8 dst_host_id;
- u8 dst_gate_id;
-} __packed;
-
-/* Largest headroom needed for outgoing custom commands */
-#define ST21NFCA_CMDS_HEADROOM 7
-
-static int st21nfca_hci_load_session(struct nfc_hci_dev *hdev)
-{
- int i, j, r;
- struct sk_buff *skb_pipe_list, *skb_pipe_info;
- struct st21nfca_pipe_info *info;
-
- u8 pipe_list[] = { ST21NFCA_DM_GETINFO_PIPE_LIST,
- NFC_HCI_TERMINAL_HOST_ID
- };
- u8 pipe_info[] = { ST21NFCA_DM_GETINFO_PIPE_INFO,
- NFC_HCI_TERMINAL_HOST_ID, 0
- };
-
- /* On ST21NFCA device pipes number are dynamics
- * A maximum of 16 pipes can be created at the same time
- * If pipes are already created, hci_dev_up will fail.
- * Doing a clear all pipe is a bad idea because:
- * - It does useless EEPROM cycling
- * - It might cause issue for secure elements support
- * (such as removing connectivity or APDU reader pipe)
- * A better approach on ST21NFCA is to:
- * - get a pipe list for each host.
- * (eg: NFC_HCI_HOST_CONTROLLER_ID for now).
- * (TODO Later on UICC HOST and eSE HOST)
- * - get pipe information
- * - match retrieved pipe list in st21nfca_gates
- * ST21NFCA_DEVICE_MGNT_GATE is a proprietary gate
- * with ST21NFCA_DEVICE_MGNT_PIPE.
- * Pipe can be closed and need to be open.
- */
- r = nfc_hci_connect_gate(hdev, NFC_HCI_HOST_CONTROLLER_ID,
- ST21NFCA_DEVICE_MGNT_GATE,
- ST21NFCA_DEVICE_MGNT_PIPE);
- if (r < 0)
- return r;
-
- /* Get pipe list */
- r = nfc_hci_send_cmd(hdev, ST21NFCA_DEVICE_MGNT_GATE,
- ST21NFCA_DM_GETINFO, pipe_list, sizeof(pipe_list),
- &skb_pipe_list);
- if (r < 0)
- return r;
-
- /* Complete the existing gate_pipe table */
- for (i = 0; i < skb_pipe_list->len; i++) {
- pipe_info[2] = skb_pipe_list->data[i];
- r = nfc_hci_send_cmd(hdev, ST21NFCA_DEVICE_MGNT_GATE,
- ST21NFCA_DM_GETINFO, pipe_info,
- sizeof(pipe_info), &skb_pipe_info);
-
- if (r)
- continue;
-
- /*
- * Match pipe ID and gate ID
- * Output format from ST21NFC_DM_GETINFO is:
- * - pipe state (1byte)
- * - source hid (1byte)
- * - source gid (1byte)
- * - destination hid (1byte)
- * - destination gid (1byte)
- */
- info = (struct st21nfca_pipe_info *) skb_pipe_info->data;
- if (info->dst_gate_id == ST21NFCA_APDU_READER_GATE &&
- info->src_host_id != ST21NFCA_ESE_HOST_ID) {
- pr_err("Unexpected apdu_reader pipe on host %x\n",
- info->src_host_id);
- kfree_skb(skb_pipe_info);
- continue;
- }
-
- for (j = 0; (j < ARRAY_SIZE(st21nfca_gates)) &&
- (st21nfca_gates[j].gate != info->dst_gate_id) ; j++)
- ;
-
- if (j < ARRAY_SIZE(st21nfca_gates) &&
- st21nfca_gates[j].gate == info->dst_gate_id &&
- ST21NFCA_DM_IS_PIPE_OPEN(info->pipe_state)) {
- st21nfca_gates[j].pipe = pipe_info[2];
-
- hdev->gate2pipe[st21nfca_gates[j].gate] =
- st21nfca_gates[j].pipe;
- hdev->pipes[st21nfca_gates[j].pipe].gate =
- st21nfca_gates[j].gate;
- hdev->pipes[st21nfca_gates[j].pipe].dest_host =
- info->src_host_id;
- }
- kfree_skb(skb_pipe_info);
- }
-
- /*
- * 3 gates have a well known pipe ID.
- * They will never appear in the pipe list
- */
- if (skb_pipe_list->len + 3 < ARRAY_SIZE(st21nfca_gates)) {
- for (i = skb_pipe_list->len + 3;
- i < ARRAY_SIZE(st21nfca_gates) - 2; i++) {
- r = nfc_hci_connect_gate(hdev,
- NFC_HCI_HOST_CONTROLLER_ID,
- st21nfca_gates[i].gate,
- st21nfca_gates[i].pipe);
- if (r < 0)
- goto free_list;
- }
- }
-
- memcpy(hdev->init_data.gates, st21nfca_gates, sizeof(st21nfca_gates));
-free_list:
- kfree_skb(skb_pipe_list);
- return r;
-}
-
-static int st21nfca_hci_open(struct nfc_hci_dev *hdev)
-{
- struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
- int r;
-
- mutex_lock(&info->info_lock);
-
- if (info->state != ST21NFCA_ST_COLD) {
- r = -EBUSY;
- goto out;
- }
-
- r = info->phy_ops->enable(info->phy_id);
-
- if (r == 0)
- info->state = ST21NFCA_ST_READY;
-
-out:
- mutex_unlock(&info->info_lock);
- return r;
-}
-
-static void st21nfca_hci_close(struct nfc_hci_dev *hdev)
-{
- struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
-
- mutex_lock(&info->info_lock);
-
- if (info->state == ST21NFCA_ST_COLD)
- goto out;
-
- info->phy_ops->disable(info->phy_id);
- info->state = ST21NFCA_ST_COLD;
-
-out:
- mutex_unlock(&info->info_lock);
-}
-
-static int st21nfca_hci_ready(struct nfc_hci_dev *hdev)
-{
- struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
- struct sk_buff *skb;
-
- u8 param;
- u8 white_list[2];
- int wl_size = 0;
- int r;
-
- if (info->se_status->is_ese_present &&
- info->se_status->is_uicc_present) {
- white_list[wl_size++] = NFC_HCI_UICC_HOST_ID;
- white_list[wl_size++] = ST21NFCA_ESE_HOST_ID;
- } else if (!info->se_status->is_ese_present &&
- info->se_status->is_uicc_present) {
- white_list[wl_size++] = NFC_HCI_UICC_HOST_ID;
- } else if (info->se_status->is_ese_present &&
- !info->se_status->is_uicc_present) {
- white_list[wl_size++] = ST21NFCA_ESE_HOST_ID;
- }
-
- if (wl_size) {
- r = nfc_hci_set_param(hdev, NFC_HCI_ADMIN_GATE,
- NFC_HCI_ADMIN_WHITELIST,
- (u8 *) &white_list, wl_size);
- if (r < 0)
- return r;
- }
-
- /* Set NFC_MODE in device management gate to enable */
- r = nfc_hci_get_param(hdev, ST21NFCA_DEVICE_MGNT_GATE,
- ST21NFCA_NFC_MODE, &skb);
- if (r < 0)
- return r;
-
- param = skb->data[0];
- kfree_skb(skb);
- if (param == 0) {
- param = 1;
-
- r = nfc_hci_set_param(hdev, ST21NFCA_DEVICE_MGNT_GATE,
- ST21NFCA_NFC_MODE, ¶m, 1);
- if (r < 0)
- return r;
- }
-
- r = nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
- NFC_HCI_EVT_END_OPERATION, NULL, 0);
- if (r < 0)
- return r;
-
- r = nfc_hci_get_param(hdev, NFC_HCI_ID_MGMT_GATE,
- NFC_HCI_ID_MGMT_VERSION_SW, &skb);
- if (r < 0)
- return r;
-
- if (skb->len != FULL_VERSION_LEN) {
- kfree_skb(skb);
- return -EINVAL;
- }
-
- print_hex_dump(KERN_DEBUG, "FULL VERSION SOFTWARE INFO: ",
- DUMP_PREFIX_NONE, 16, 1,
- skb->data, FULL_VERSION_LEN, false);
-
- kfree_skb(skb);
-
- return 0;
-}
-
-static int st21nfca_hci_xmit(struct nfc_hci_dev *hdev, struct sk_buff *skb)
-{
- struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
-
- return info->phy_ops->write(info->phy_id, skb);
-}
-
-static int st21nfca_hci_start_poll(struct nfc_hci_dev *hdev,
- u32 im_protocols, u32 tm_protocols)
-{
- int r;
- u32 pol_req;
- u8 param[19];
- struct sk_buff *datarate_skb;
-
- pr_info(DRIVER_DESC ": %s protocols 0x%x 0x%x\n",
- __func__, im_protocols, tm_protocols);
-
- r = nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
- NFC_HCI_EVT_END_OPERATION, NULL, 0);
- if (r < 0)
- return r;
- if (im_protocols) {
- /*
- * enable polling according to im_protocols & tm_protocols
- * - CLOSE pipe according to im_protocols & tm_protocols
- */
- if ((NFC_HCI_RF_READER_B_GATE & im_protocols) == 0) {
- r = nfc_hci_disconnect_gate(hdev,
- NFC_HCI_RF_READER_B_GATE);
- if (r < 0)
- return r;
- }
-
- if ((NFC_HCI_RF_READER_A_GATE & im_protocols) == 0) {
- r = nfc_hci_disconnect_gate(hdev,
- NFC_HCI_RF_READER_A_GATE);
- if (r < 0)
- return r;
- }
-
- if ((ST21NFCA_RF_READER_F_GATE & im_protocols) == 0) {
- r = nfc_hci_disconnect_gate(hdev,
- ST21NFCA_RF_READER_F_GATE);
- if (r < 0)
- return r;
- } else {
- hdev->gb = nfc_get_local_general_bytes(hdev->ndev,
- &hdev->gb_len);
-
- if (hdev->gb == NULL || hdev->gb_len == 0) {
- im_protocols &= ~NFC_PROTO_NFC_DEP_MASK;
- tm_protocols &= ~NFC_PROTO_NFC_DEP_MASK;
- }
-
- param[0] = ST21NFCA_RF_READER_F_DATARATE_106 |
- ST21NFCA_RF_READER_F_DATARATE_212 |
- ST21NFCA_RF_READER_F_DATARATE_424;
- r = nfc_hci_set_param(hdev, ST21NFCA_RF_READER_F_GATE,
- ST21NFCA_RF_READER_F_DATARATE,
- param, 1);
- if (r < 0)
- return r;
-
- pol_req = be32_to_cpu((__force __be32)
- ST21NFCA_RF_READER_F_POL_REQ_DEFAULT);
- r = nfc_hci_set_param(hdev, ST21NFCA_RF_READER_F_GATE,
- ST21NFCA_RF_READER_F_POL_REQ,
- (u8 *) &pol_req, 4);
- if (r < 0)
- return r;
- }
-
- if ((ST21NFCA_RF_READER_14443_3_A_GATE & im_protocols) == 0) {
- r = nfc_hci_disconnect_gate(hdev,
- ST21NFCA_RF_READER_14443_3_A_GATE);
- if (r < 0)
- return r;
- }
-
- if ((ST21NFCA_RF_READER_ISO15693_GATE & im_protocols) == 0) {
- r = nfc_hci_disconnect_gate(hdev,
- ST21NFCA_RF_READER_ISO15693_GATE);
- if (r < 0)
- return r;
- }
-
- r = nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
- NFC_HCI_EVT_READER_REQUESTED, NULL, 0);
- if (r < 0)
- nfc_hci_send_event(hdev, NFC_HCI_RF_READER_A_GATE,
- NFC_HCI_EVT_END_OPERATION, NULL, 0);
- }
-
- if (tm_protocols & NFC_PROTO_NFC_DEP_MASK) {
- r = nfc_hci_get_param(hdev, ST21NFCA_RF_CARD_F_GATE,
- ST21NFCA_RF_CARD_F_DATARATE,
- &datarate_skb);
- if (r < 0)
- return r;
-
- /* Configure the maximum supported datarate to 424Kbps */
- if (datarate_skb->len > 0 &&
- datarate_skb->data[0] !=
- ST21NFCA_RF_CARD_F_DATARATE_212_424) {
- param[0] = ST21NFCA_RF_CARD_F_DATARATE_212_424;
- r = nfc_hci_set_param(hdev, ST21NFCA_RF_CARD_F_GATE,
- ST21NFCA_RF_CARD_F_DATARATE,
- param, 1);
- if (r < 0) {
- kfree_skb(datarate_skb);
- return r;
- }
- }
- kfree_skb(datarate_skb);
-
- /*
- * Configure sens_res
- *
- * NFC Forum Digital Spec Table 7:
- * NFCID1 size: triple (10 bytes)
- */
- param[0] = 0x00;
- param[1] = 0x08;
- r = nfc_hci_set_param(hdev, ST21NFCA_RF_CARD_F_GATE,
- ST21NFCA_RF_CARD_F_SENS_RES, param, 2);
- if (r < 0)
- return r;
-
- /*
- * Configure sel_res
- *
- * NFC Forum Digistal Spec Table 17:
- * b3 set to 0b (value b7-b6):
- * - 10b: Configured for NFC-DEP Protocol
- */
- param[0] = 0x40;
- r = nfc_hci_set_param(hdev, ST21NFCA_RF_CARD_F_GATE,
- ST21NFCA_RF_CARD_F_SEL_RES, param, 1);
- if (r < 0)
- return r;
-
- /* Configure NFCID1 Random uid */
- r = nfc_hci_set_param(hdev, ST21NFCA_RF_CARD_F_GATE,
- ST21NFCA_RF_CARD_F_NFCID1, NULL, 0);
- if (r < 0)
- return r;
-
- /* Configure NFCID2_LIST */
- /* System Code */
- param[0] = 0x00;
- param[1] = 0x00;
- /* NFCID2 */
- param[2] = 0x01;
- param[3] = 0xfe;
- param[4] = 'S';
- param[5] = 'T';
- param[6] = 'M';
- param[7] = 'i';
- param[8] = 'c';
- param[9] = 'r';
- /* 8 byte Pad bytes used for polling respone frame */
-
- /*
- * Configuration byte:
- * - bit 0: define the default NFCID2 entry used when the
- * system code is equal to 'FFFF'
- * - bit 1: use a random value for lowest 6 bytes of
- * NFCID2 value
- * - bit 2: ignore polling request frame if request code
- * is equal to '01'
- * - Other bits are RFU
- */
- param[18] = 0x01;
- r = nfc_hci_set_param(hdev, ST21NFCA_RF_CARD_F_GATE,
- ST21NFCA_RF_CARD_F_NFCID2_LIST, param,
- 19);
- if (r < 0)
- return r;
-
- param[0] = 0x02;
- r = nfc_hci_set_param(hdev, ST21NFCA_RF_CARD_F_GATE,
- ST21NFCA_RF_CARD_F_MODE, param, 1);
- }
-
- return r;
-}
-
-static void st21nfca_hci_stop_poll(struct nfc_hci_dev *hdev)
-{
- nfc_hci_send_cmd(hdev, ST21NFCA_DEVICE_MGNT_GATE,
- ST21NFCA_DM_DISCONNECT, NULL, 0, NULL);
-}
-
-static int st21nfca_get_iso14443_3_atqa(struct nfc_hci_dev *hdev, u16 *atqa)
-{
- int r;
- struct sk_buff *atqa_skb = NULL;
-
- r = nfc_hci_get_param(hdev, ST21NFCA_RF_READER_14443_3_A_GATE,
- ST21NFCA_RF_READER_14443_3_A_ATQA, &atqa_skb);
- if (r < 0)
- goto exit;
-
- if (atqa_skb->len != 2) {
- r = -EPROTO;
- goto exit;
- }
-
- *atqa = be16_to_cpu(*(__be16 *) atqa_skb->data);
-
-exit:
- kfree_skb(atqa_skb);
- return r;
-}
-
-static int st21nfca_get_iso14443_3_sak(struct nfc_hci_dev *hdev, u8 *sak)
-{
- int r;
- struct sk_buff *sak_skb = NULL;
-
- r = nfc_hci_get_param(hdev, ST21NFCA_RF_READER_14443_3_A_GATE,
- ST21NFCA_RF_READER_14443_3_A_SAK, &sak_skb);
- if (r < 0)
- goto exit;
-
- if (sak_skb->len != 1) {
- r = -EPROTO;
- goto exit;
- }
-
- *sak = sak_skb->data[0];
-
-exit:
- kfree_skb(sak_skb);
- return r;
-}
-
-static int st21nfca_get_iso14443_3_uid(struct nfc_hci_dev *hdev, u8 *uid,
- int *len)
-{
- int r;
- struct sk_buff *uid_skb = NULL;
-
- r = nfc_hci_get_param(hdev, ST21NFCA_RF_READER_14443_3_A_GATE,
- ST21NFCA_RF_READER_14443_3_A_UID, &uid_skb);
- if (r < 0)
- goto exit;
-
- if (uid_skb->len == 0 || uid_skb->len > NFC_NFCID1_MAXSIZE) {
- r = -EPROTO;
- goto exit;
- }
-
- memcpy(uid, uid_skb->data, uid_skb->len);
- *len = uid_skb->len;
-exit:
- kfree_skb(uid_skb);
- return r;
-}
-
-static int st21nfca_get_iso15693_inventory(struct nfc_hci_dev *hdev,
- struct nfc_target *target)
-{
- int r;
- struct sk_buff *inventory_skb = NULL;
-
- r = nfc_hci_get_param(hdev, ST21NFCA_RF_READER_ISO15693_GATE,
- ST21NFCA_RF_READER_ISO15693_INVENTORY,
- &inventory_skb);
- if (r < 0)
- goto exit;
-
- skb_pull(inventory_skb, 2);
-
- if (inventory_skb->len == 0 ||
- inventory_skb->len > NFC_ISO15693_UID_MAXSIZE) {
- r = -EPROTO;
- goto exit;
- }
-
- memcpy(target->iso15693_uid, inventory_skb->data, inventory_skb->len);
- target->iso15693_dsfid = inventory_skb->data[1];
- target->is_iso15693 = 1;
-exit:
- kfree_skb(inventory_skb);
- return r;
-}
-
-static int st21nfca_hci_dep_link_up(struct nfc_hci_dev *hdev,
- struct nfc_target *target, u8 comm_mode,
- u8 *gb, size_t gb_len)
-{
- struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
-
- info->dep_info.idx = target->idx;
- return st21nfca_im_send_atr_req(hdev, gb, gb_len);
-}
-
-static int st21nfca_hci_dep_link_down(struct nfc_hci_dev *hdev)
-{
- struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
-
- info->state = ST21NFCA_ST_READY;
-
- return nfc_hci_send_cmd(hdev, ST21NFCA_DEVICE_MGNT_GATE,
- ST21NFCA_DM_DISCONNECT, NULL, 0, NULL);
-}
-
-static int st21nfca_hci_target_from_gate(struct nfc_hci_dev *hdev, u8 gate,
- struct nfc_target *target)
-{
- int r, len;
- u16 atqa;
- u8 sak;
- u8 uid[NFC_NFCID1_MAXSIZE];
-
- switch (gate) {
- case ST21NFCA_RF_READER_F_GATE:
- target->supported_protocols = NFC_PROTO_FELICA_MASK;
- break;
- case ST21NFCA_RF_READER_14443_3_A_GATE:
- /* ISO14443-3 type 1 or 2 tags */
- r = st21nfca_get_iso14443_3_atqa(hdev, &atqa);
- if (r < 0)
- return r;
- if (atqa == 0x000c) {
- target->supported_protocols = NFC_PROTO_JEWEL_MASK;
- target->sens_res = 0x0c00;
- } else {
- r = st21nfca_get_iso14443_3_sak(hdev, &sak);
- if (r < 0)
- return r;
-
- r = st21nfca_get_iso14443_3_uid(hdev, uid, &len);
- if (r < 0)
- return r;
-
- target->supported_protocols =
- nfc_hci_sak_to_protocol(sak);
- if (target->supported_protocols == 0xffffffff)
- return -EPROTO;
-
- target->sens_res = atqa;
- target->sel_res = sak;
- memcpy(target->nfcid1, uid, len);
- target->nfcid1_len = len;
- }
-
- break;
- case ST21NFCA_RF_READER_ISO15693_GATE:
- target->supported_protocols = NFC_PROTO_ISO15693_MASK;
- r = st21nfca_get_iso15693_inventory(hdev, target);
- if (r < 0)
- return r;
- break;
- default:
- return -EPROTO;
- }
-
- return 0;
-}
-
-static int st21nfca_hci_complete_target_discovered(struct nfc_hci_dev *hdev,
- u8 gate,
- struct nfc_target *target)
-{
- int r;
- struct sk_buff *nfcid_skb = NULL;
-
- if (gate == ST21NFCA_RF_READER_F_GATE) {
- r = nfc_hci_get_param(hdev, ST21NFCA_RF_READER_F_GATE,
- ST21NFCA_RF_READER_F_NFCID2, &nfcid_skb);
- if (r < 0)
- goto exit;
-
- if (nfcid_skb->len > NFC_SENSF_RES_MAXSIZE) {
- r = -EPROTO;
- goto exit;
- }
-
- /*
- * - After the recepton of polling response for type F frame
- * at 212 or 424 Kbit/s, NFCID2 registry parameters will be
- * updated.
- * - After the reception of SEL_RES with NFCIP-1 compliant bit
- * set for type A frame NFCID1 will be updated
- */
- if (nfcid_skb->len > 0) {
- /* P2P in type F */
- memcpy(target->sensf_res, nfcid_skb->data,
- nfcid_skb->len);
- target->sensf_res_len = nfcid_skb->len;
- /* NFC Forum Digital Protocol Table 44 */
- if (target->sensf_res[0] == 0x01 &&
- target->sensf_res[1] == 0xfe)
- target->supported_protocols =
- NFC_PROTO_NFC_DEP_MASK;
- else
- target->supported_protocols =
- NFC_PROTO_FELICA_MASK;
- } else {
- kfree_skb(nfcid_skb);
- /* P2P in type A */
- r = nfc_hci_get_param(hdev, ST21NFCA_RF_READER_F_GATE,
- ST21NFCA_RF_READER_F_NFCID1,
- &nfcid_skb);
- if (r < 0)
- goto exit;
-
- if (nfcid_skb->len > NFC_NFCID1_MAXSIZE) {
- r = -EPROTO;
- goto exit;
- }
- memcpy(target->sensf_res, nfcid_skb->data,
- nfcid_skb->len);
- target->sensf_res_len = nfcid_skb->len;
- target->supported_protocols = NFC_PROTO_NFC_DEP_MASK;
- }
- target->hci_reader_gate = ST21NFCA_RF_READER_F_GATE;
- }
- r = 1;
-exit:
- kfree_skb(nfcid_skb);
- return r;
-}
-
-#define ST21NFCA_CB_TYPE_READER_ISO15693 1
-static void st21nfca_hci_data_exchange_cb(void *context, struct sk_buff *skb,
- int err)
-{
- struct st21nfca_hci_info *info = context;
-
- switch (info->async_cb_type) {
- case ST21NFCA_CB_TYPE_READER_ISO15693:
- if (err == 0)
- skb_trim(skb, skb->len - 1);
- info->async_cb(info->async_cb_context, skb, err);
- break;
- default:
- if (err == 0)
- kfree_skb(skb);
- break;
- }
-}
-
-/*
- * Returns:
- * <= 0: driver handled the data exchange
- * 1: driver doesn't especially handle, please do standard processing
- */
-static int st21nfca_hci_im_transceive(struct nfc_hci_dev *hdev,
- struct nfc_target *target,
- struct sk_buff *skb,
- data_exchange_cb_t cb, void *cb_context)
-{
- struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
-
- pr_info(DRIVER_DESC ": %s for gate=%d len=%d\n", __func__,
- target->hci_reader_gate, skb->len);
-
- switch (target->hci_reader_gate) {
- case ST21NFCA_RF_READER_F_GATE:
- if (target->supported_protocols == NFC_PROTO_NFC_DEP_MASK)
- return st21nfca_im_send_dep_req(hdev, skb);
-
- *skb_push(skb, 1) = 0x1a;
- return nfc_hci_send_cmd_async(hdev, target->hci_reader_gate,
- ST21NFCA_WR_XCHG_DATA, skb->data,
- skb->len, cb, cb_context);
- case ST21NFCA_RF_READER_14443_3_A_GATE:
- *skb_push(skb, 1) = 0x1a; /* CTR, see spec:10.2.2.1 */
-
- return nfc_hci_send_cmd_async(hdev, target->hci_reader_gate,
- ST21NFCA_WR_XCHG_DATA, skb->data,
- skb->len, cb, cb_context);
- case ST21NFCA_RF_READER_ISO15693_GATE:
- info->async_cb_type = ST21NFCA_CB_TYPE_READER_ISO15693;
- info->async_cb = cb;
- info->async_cb_context = cb_context;
-
- *skb_push(skb, 1) = 0x17;
-
- return nfc_hci_send_cmd_async(hdev, target->hci_reader_gate,
- ST21NFCA_WR_XCHG_DATA, skb->data,
- skb->len,
- st21nfca_hci_data_exchange_cb,
- info);
- break;
- default:
- return 1;
- }
-}
-
-static int st21nfca_hci_tm_send(struct nfc_hci_dev *hdev, struct sk_buff *skb)
-{
- return st21nfca_tm_send_dep_res(hdev, skb);
-}
-
-static int st21nfca_hci_check_presence(struct nfc_hci_dev *hdev,
- struct nfc_target *target)
-{
- u8 fwi = 0x11;
-
- switch (target->hci_reader_gate) {
- case NFC_HCI_RF_READER_A_GATE:
- case NFC_HCI_RF_READER_B_GATE:
- /*
- * PRESENCE_CHECK on those gates is available
- * However, the answer to this command is taking 3 * fwi
- * if the card is no present.
- * Instead, we send an empty I-Frame with a very short
- * configurable fwi ~604µs.
- */
- return nfc_hci_send_cmd(hdev, target->hci_reader_gate,
- ST21NFCA_WR_XCHG_DATA, &fwi, 1, NULL);
- case ST21NFCA_RF_READER_14443_3_A_GATE:
- return nfc_hci_send_cmd(hdev, target->hci_reader_gate,
- ST21NFCA_RF_READER_CMD_PRESENCE_CHECK,
- NULL, 0, NULL);
- default:
- return -EOPNOTSUPP;
- }
-}
-
-static void st21nfca_hci_cmd_received(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd,
- struct sk_buff *skb)
-{
- struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
- u8 gate = hdev->pipes[pipe].gate;
-
- pr_debug("cmd: %x\n", cmd);
-
- switch (cmd) {
- case NFC_HCI_ANY_OPEN_PIPE:
- if (gate != ST21NFCA_APDU_READER_GATE &&
- hdev->pipes[pipe].dest_host != NFC_HCI_UICC_HOST_ID)
- info->se_info.count_pipes++;
-
- if (info->se_info.count_pipes == info->se_info.expected_pipes) {
- del_timer_sync(&info->se_info.se_active_timer);
- info->se_info.se_active = false;
- info->se_info.count_pipes = 0;
- complete(&info->se_info.req_completion);
- }
- break;
- }
-}
-
-static int st21nfca_admin_event_received(struct nfc_hci_dev *hdev, u8 event,
- struct sk_buff *skb)
-{
- struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
-
- pr_debug("admin event: %x\n", event);
-
- switch (event) {
- case ST21NFCA_EVT_HOT_PLUG:
- if (info->se_info.se_active) {
- if (!ST21NFCA_EVT_HOT_PLUG_IS_INHIBITED(skb)) {
- del_timer_sync(&info->se_info.se_active_timer);
- info->se_info.se_active = false;
- complete(&info->se_info.req_completion);
- } else {
- mod_timer(&info->se_info.se_active_timer,
- jiffies +
- msecs_to_jiffies(ST21NFCA_SE_TO_PIPES));
- }
- }
- break;
- }
- kfree_skb(skb);
- return 0;
-}
-
-/*
- * Returns:
- * <= 0: driver handled the event, skb consumed
- * 1: driver does not handle the event, please do standard processing
- */
-static int st21nfca_hci_event_received(struct nfc_hci_dev *hdev, u8 pipe,
- u8 event, struct sk_buff *skb)
-{
- u8 gate = hdev->pipes[pipe].gate;
- u8 host = hdev->pipes[pipe].dest_host;
-
- pr_debug("hci event: %d gate: %x\n", event, gate);
-
- switch (gate) {
- case NFC_HCI_ADMIN_GATE:
- return st21nfca_admin_event_received(hdev, event, skb);
- case ST21NFCA_RF_CARD_F_GATE:
- return st21nfca_dep_event_received(hdev, event, skb);
- case ST21NFCA_CONNECTIVITY_GATE:
- return st21nfca_connectivity_event_received(hdev, host,
- event, skb);
- case ST21NFCA_APDU_READER_GATE:
- return st21nfca_apdu_reader_event_received(hdev, event, skb);
- default:
- return 1;
- }
-}
-
-static struct nfc_hci_ops st21nfca_hci_ops = {
- .open = st21nfca_hci_open,
- .close = st21nfca_hci_close,
- .load_session = st21nfca_hci_load_session,
- .hci_ready = st21nfca_hci_ready,
- .xmit = st21nfca_hci_xmit,
- .start_poll = st21nfca_hci_start_poll,
- .stop_poll = st21nfca_hci_stop_poll,
- .dep_link_up = st21nfca_hci_dep_link_up,
- .dep_link_down = st21nfca_hci_dep_link_down,
- .target_from_gate = st21nfca_hci_target_from_gate,
- .complete_target_discovered = st21nfca_hci_complete_target_discovered,
- .im_transceive = st21nfca_hci_im_transceive,
- .tm_send = st21nfca_hci_tm_send,
- .check_presence = st21nfca_hci_check_presence,
- .event_received = st21nfca_hci_event_received,
- .cmd_received = st21nfca_hci_cmd_received,
- .discover_se = st21nfca_hci_discover_se,
- .enable_se = st21nfca_hci_enable_se,
- .disable_se = st21nfca_hci_disable_se,
- .se_io = st21nfca_hci_se_io,
-};
-
-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_hci_info *info;
- int r = 0;
- int dev_num;
- u32 protocols;
- struct nfc_hci_init_data init_data;
- unsigned long quirks = 0;
-
- info = kzalloc(sizeof(struct st21nfca_hci_info), GFP_KERNEL);
- if (!info) {
- r = -ENOMEM;
- goto err_alloc_hdev;
- }
-
- info->phy_ops = phy_ops;
- info->phy_id = phy_id;
- info->state = ST21NFCA_ST_COLD;
- mutex_init(&info->info_lock);
-
- init_data.gate_count = ARRAY_SIZE(st21nfca_gates);
-
- memcpy(init_data.gates, st21nfca_gates, sizeof(st21nfca_gates));
-
- /*
- * Session id must include the driver name + i2c bus addr
- * persistent info to discriminate 2 identical chips
- */
- dev_num = find_first_zero_bit(dev_mask, ST21NFCA_NUM_DEVICES);
-
- if (dev_num >= ST21NFCA_NUM_DEVICES)
- return -ENODEV;
-
- set_bit(dev_num, dev_mask);
-
- scnprintf(init_data.session_id, sizeof(init_data.session_id), "%s%2x",
- "ST21AH", dev_num);
-
- protocols = NFC_PROTO_JEWEL_MASK |
- NFC_PROTO_MIFARE_MASK |
- NFC_PROTO_FELICA_MASK |
- NFC_PROTO_ISO14443_MASK |
- NFC_PROTO_ISO14443_B_MASK |
- NFC_PROTO_ISO15693_MASK |
- NFC_PROTO_NFC_DEP_MASK;
-
- set_bit(NFC_HCI_QUIRK_SHORT_CLEAR, &quirks);
-
- info->hdev =
- nfc_hci_allocate_device(&st21nfca_hci_ops, &init_data, quirks,
- protocols, llc_name,
- phy_headroom + ST21NFCA_CMDS_HEADROOM,
- phy_tailroom, phy_payload);
-
- if (!info->hdev) {
- pr_err("Cannot allocate nfc hdev.\n");
- r = -ENOMEM;
- goto err_alloc_hdev;
- }
-
- info->se_status = se_status;
-
- nfc_hci_set_clientdata(info->hdev, info);
-
- r = nfc_hci_register_device(info->hdev);
- if (r)
- goto err_regdev;
-
- *hdev = info->hdev;
- st21nfca_dep_init(info->hdev);
- st21nfca_se_init(info->hdev);
-
- return 0;
-
-err_regdev:
- nfc_hci_free_device(info->hdev);
-
-err_alloc_hdev:
- kfree(info);
-
- return r;
-}
-EXPORT_SYMBOL(st21nfca_hci_probe);
-
-void st21nfca_hci_remove(struct nfc_hci_dev *hdev)
-{
- struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
-
- st21nfca_dep_deinit(hdev);
- st21nfca_se_deinit(hdev);
- nfc_hci_unregister_device(hdev);
- nfc_hci_free_device(hdev);
- kfree(info);
-}
-EXPORT_SYMBOL(st21nfca_hci_remove);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION(DRIVER_DESC);
#define __LOCAL_ST21NFCA_H_
#include <net/nfc/hci.h>
-
-#include "st21nfca_dep.h"
-#include "st21nfca_se.h"
+#include <linux/skbuff.h>
+#include <linux/workqueue.h>
#define HCI_MODE 0
#define ST21NFCA_HCI_LLC_MAX_SIZE (ST21NFCA_HCI_LLC_LEN_CRC + 1 + \
ST21NFCA_HCI_LLC_MAX_PAYLOAD)
-#define DRIVER_DESC "HCI NFC driver for ST21NFCA"
+/* 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
-#define ST21NFCA_HCI_MODE 0
+/*
+ * 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_NUM_DEVICES 256
+#define ST21NFCA_HCI_MODE 0
+#define ST21NFCA_NUM_DEVICES 256
struct st21nfca_se_status {
bool is_ese_present;
bool is_uicc_present;
};
-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);
-
enum st21nfca_state {
ST21NFCA_ST_COLD,
ST21NFCA_ST_READY,
};
+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 st21nfca_hci_info {
struct nfc_phy_ops *phy_ops;
void *phy_id;
struct st21nfca_se_info se_info;
};
-/* Reader RF commands */
-#define ST21NFCA_WR_XCHG_DATA 0x10
+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);
-#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
+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);
#endif /* __LOCAL_ST21NFCA_H_ */
+++ /dev/null
-/*
- * 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/>.
- */
-
-#include <net/nfc/hci.h>
-
-#include "st21nfca.h"
-#include "st21nfca_dep.h"
-
-#define ST21NFCA_NFCIP1_INITIATOR 0x00
-#define ST21NFCA_NFCIP1_REQ 0xd4
-#define ST21NFCA_NFCIP1_RES 0xd5
-#define ST21NFCA_NFCIP1_ATR_REQ 0x00
-#define ST21NFCA_NFCIP1_ATR_RES 0x01
-#define ST21NFCA_NFCIP1_PSL_REQ 0x04
-#define ST21NFCA_NFCIP1_PSL_RES 0x05
-#define ST21NFCA_NFCIP1_DEP_REQ 0x06
-#define ST21NFCA_NFCIP1_DEP_RES 0x07
-
-#define ST21NFCA_NFC_DEP_PFB_PNI(pfb) ((pfb) & 0x03)
-#define ST21NFCA_NFC_DEP_PFB_TYPE(pfb) ((pfb) & 0xE0)
-#define ST21NFCA_NFC_DEP_PFB_IS_TIMEOUT(pfb) \
- ((pfb) & ST21NFCA_NFC_DEP_PFB_TIMEOUT_BIT)
-#define ST21NFCA_NFC_DEP_DID_BIT_SET(pfb) ((pfb) & 0x04)
-#define ST21NFCA_NFC_DEP_NAD_BIT_SET(pfb) ((pfb) & 0x08)
-#define ST21NFCA_NFC_DEP_PFB_TIMEOUT_BIT 0x10
-
-#define ST21NFCA_NFC_DEP_PFB_IS_TIMEOUT(pfb) \
- ((pfb) & ST21NFCA_NFC_DEP_PFB_TIMEOUT_BIT)
-
-#define ST21NFCA_NFC_DEP_PFB_I_PDU 0x00
-#define ST21NFCA_NFC_DEP_PFB_ACK_NACK_PDU 0x40
-#define ST21NFCA_NFC_DEP_PFB_SUPERVISOR_PDU 0x80
-
-#define ST21NFCA_ATR_REQ_MIN_SIZE 17
-#define ST21NFCA_ATR_REQ_MAX_SIZE 65
-#define ST21NFCA_LR_BITS_PAYLOAD_SIZE_254B 0x30
-#define ST21NFCA_GB_BIT 0x02
-
-#define ST21NFCA_EVT_SEND_DATA 0x10
-#define ST21NFCA_EVT_FIELD_ON 0x11
-#define ST21NFCA_EVT_CARD_DEACTIVATED 0x12
-#define ST21NFCA_EVT_CARD_ACTIVATED 0x13
-#define ST21NFCA_EVT_FIELD_OFF 0x14
-
-#define ST21NFCA_EVT_CARD_F_BITRATE 0x16
-#define ST21NFCA_EVT_READER_F_BITRATE 0x13
-#define ST21NFCA_PSL_REQ_SEND_SPEED(brs) (brs & 0x38)
-#define ST21NFCA_PSL_REQ_RECV_SPEED(brs) (brs & 0x07)
-#define ST21NFCA_PP2LRI(pp) ((pp & 0x30) >> 4)
-#define ST21NFCA_CARD_BITRATE_212 0x01
-#define ST21NFCA_CARD_BITRATE_424 0x02
-
-#define ST21NFCA_DEFAULT_TIMEOUT 0x0a
-
-
-#define PROTOCOL_ERR(req) pr_err("%d: ST21NFCA Protocol error: %s\n", \
- __LINE__, req)
-
-struct st21nfca_atr_req {
- u8 length;
- u8 cmd0;
- u8 cmd1;
- u8 nfcid3[NFC_NFCID3_MAXSIZE];
- u8 did;
- u8 bsi;
- u8 bri;
- u8 ppi;
- u8 gbi[0];
-} __packed;
-
-struct st21nfca_atr_res {
- u8 length;
- u8 cmd0;
- u8 cmd1;
- u8 nfcid3[NFC_NFCID3_MAXSIZE];
- u8 did;
- u8 bsi;
- u8 bri;
- u8 to;
- u8 ppi;
- u8 gbi[0];
-} __packed;
-
-struct st21nfca_psl_req {
- u8 length;
- u8 cmd0;
- u8 cmd1;
- u8 did;
- u8 brs;
- u8 fsl;
-} __packed;
-
-struct st21nfca_psl_res {
- u8 length;
- u8 cmd0;
- u8 cmd1;
- u8 did;
-} __packed;
-
-struct st21nfca_dep_req_res {
- u8 length;
- u8 cmd0;
- u8 cmd1;
- u8 pfb;
- u8 did;
- u8 nad;
-} __packed;
-
-static void st21nfca_tx_work(struct work_struct *work)
-{
- struct st21nfca_hci_info *info = container_of(work,
- struct st21nfca_hci_info,
- dep_info.tx_work);
-
- struct nfc_dev *dev;
- struct sk_buff *skb;
-
- if (info) {
- dev = info->hdev->ndev;
- skb = info->dep_info.tx_pending;
-
- device_lock(&dev->dev);
-
- nfc_hci_send_cmd_async(info->hdev, ST21NFCA_RF_READER_F_GATE,
- ST21NFCA_WR_XCHG_DATA, skb->data, skb->len,
- info->async_cb, info);
- device_unlock(&dev->dev);
- kfree_skb(skb);
- }
-}
-
-static void st21nfca_im_send_pdu(struct st21nfca_hci_info *info,
- struct sk_buff *skb)
-{
- info->dep_info.tx_pending = skb;
- schedule_work(&info->dep_info.tx_work);
-}
-
-static int st21nfca_tm_send_atr_res(struct nfc_hci_dev *hdev,
- struct st21nfca_atr_req *atr_req)
-{
- struct st21nfca_atr_res *atr_res;
- struct sk_buff *skb;
- size_t gb_len;
- int r;
- struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
-
- gb_len = atr_req->length - sizeof(struct st21nfca_atr_req);
- skb = alloc_skb(atr_req->length + 1, GFP_KERNEL);
- if (!skb)
- return -ENOMEM;
-
- skb_put(skb, sizeof(struct st21nfca_atr_res));
-
- atr_res = (struct st21nfca_atr_res *)skb->data;
- memset(atr_res, 0, sizeof(struct st21nfca_atr_res));
-
- atr_res->length = atr_req->length + 1;
- atr_res->cmd0 = ST21NFCA_NFCIP1_RES;
- atr_res->cmd1 = ST21NFCA_NFCIP1_ATR_RES;
-
- memcpy(atr_res->nfcid3, atr_req->nfcid3, 6);
- atr_res->bsi = 0x00;
- atr_res->bri = 0x00;
- atr_res->to = ST21NFCA_DEFAULT_TIMEOUT;
- atr_res->ppi = ST21NFCA_LR_BITS_PAYLOAD_SIZE_254B;
-
- if (gb_len) {
- skb_put(skb, gb_len);
-
- atr_res->ppi |= ST21NFCA_GB_BIT;
- memcpy(atr_res->gbi, atr_req->gbi, gb_len);
- r = nfc_set_remote_general_bytes(hdev->ndev, atr_res->gbi,
- gb_len);
- if (r < 0)
- return r;
- }
-
- info->dep_info.curr_nfc_dep_pni = 0;
-
- r = nfc_hci_send_event(hdev, ST21NFCA_RF_CARD_F_GATE,
- ST21NFCA_EVT_SEND_DATA, skb->data, skb->len);
- kfree_skb(skb);
- return r;
-}
-
-static int st21nfca_tm_recv_atr_req(struct nfc_hci_dev *hdev,
- struct sk_buff *skb)
-{
- struct st21nfca_atr_req *atr_req;
- size_t gb_len;
- int r;
-
- skb_trim(skb, skb->len - 1);
-
- if (!skb->len) {
- r = -EIO;
- goto exit;
- }
-
- if (skb->len < ST21NFCA_ATR_REQ_MIN_SIZE) {
- r = -EPROTO;
- goto exit;
- }
-
- atr_req = (struct st21nfca_atr_req *)skb->data;
-
- if (atr_req->length < sizeof(struct st21nfca_atr_req)) {
- r = -EPROTO;
- goto exit;
- }
-
- r = st21nfca_tm_send_atr_res(hdev, atr_req);
- if (r)
- goto exit;
-
- gb_len = skb->len - sizeof(struct st21nfca_atr_req);
-
- r = nfc_tm_activated(hdev->ndev, NFC_PROTO_NFC_DEP_MASK,
- NFC_COMM_PASSIVE, atr_req->gbi, gb_len);
- if (r)
- goto exit;
-
- r = 0;
-
-exit:
- return r;
-}
-
-static int st21nfca_tm_send_psl_res(struct nfc_hci_dev *hdev,
- struct st21nfca_psl_req *psl_req)
-{
- struct st21nfca_psl_res *psl_res;
- struct sk_buff *skb;
- u8 bitrate[2] = {0, 0};
- int r;
-
- skb = alloc_skb(sizeof(struct st21nfca_psl_res), GFP_KERNEL);
- if (!skb)
- return -ENOMEM;
- skb_put(skb, sizeof(struct st21nfca_psl_res));
-
- psl_res = (struct st21nfca_psl_res *)skb->data;
-
- psl_res->length = sizeof(struct st21nfca_psl_res);
- psl_res->cmd0 = ST21NFCA_NFCIP1_RES;
- psl_res->cmd1 = ST21NFCA_NFCIP1_PSL_RES;
- psl_res->did = psl_req->did;
-
- r = nfc_hci_send_event(hdev, ST21NFCA_RF_CARD_F_GATE,
- ST21NFCA_EVT_SEND_DATA, skb->data, skb->len);
- if (r < 0)
- goto error;
-
- /*
- * ST21NFCA only support P2P passive.
- * PSL_REQ BRS value != 0 has only a meaning to
- * change technology to type F.
- * We change to BITRATE 424Kbits.
- * In other case switch to BITRATE 106Kbits.
- */
- if (ST21NFCA_PSL_REQ_SEND_SPEED(psl_req->brs) &&
- ST21NFCA_PSL_REQ_RECV_SPEED(psl_req->brs)) {
- bitrate[0] = ST21NFCA_CARD_BITRATE_424;
- bitrate[1] = ST21NFCA_CARD_BITRATE_424;
- }
-
- /* Send an event to change bitrate change event to card f */
- r = nfc_hci_send_event(hdev, ST21NFCA_RF_CARD_F_GATE,
- ST21NFCA_EVT_CARD_F_BITRATE, bitrate, 2);
-error:
- kfree_skb(skb);
- return r;
-}
-
-static int st21nfca_tm_recv_psl_req(struct nfc_hci_dev *hdev,
- struct sk_buff *skb)
-{
- struct st21nfca_psl_req *psl_req;
- int r;
-
- skb_trim(skb, skb->len - 1);
-
- if (!skb->len) {
- r = -EIO;
- goto exit;
- }
-
- psl_req = (struct st21nfca_psl_req *)skb->data;
-
- if (skb->len < sizeof(struct st21nfca_psl_req)) {
- r = -EIO;
- goto exit;
- }
-
- r = st21nfca_tm_send_psl_res(hdev, psl_req);
-exit:
- return r;
-}
-
-int st21nfca_tm_send_dep_res(struct nfc_hci_dev *hdev, struct sk_buff *skb)
-{
- int r;
- struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
-
- *skb_push(skb, 1) = info->dep_info.curr_nfc_dep_pni;
- *skb_push(skb, 1) = ST21NFCA_NFCIP1_DEP_RES;
- *skb_push(skb, 1) = ST21NFCA_NFCIP1_RES;
- *skb_push(skb, 1) = skb->len;
-
- r = nfc_hci_send_event(hdev, ST21NFCA_RF_CARD_F_GATE,
- ST21NFCA_EVT_SEND_DATA, skb->data, skb->len);
- kfree_skb(skb);
-
- return r;
-}
-EXPORT_SYMBOL(st21nfca_tm_send_dep_res);
-
-static int st21nfca_tm_recv_dep_req(struct nfc_hci_dev *hdev,
- struct sk_buff *skb)
-{
- struct st21nfca_dep_req_res *dep_req;
- u8 size;
- int r;
- struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
-
- skb_trim(skb, skb->len - 1);
-
- size = 4;
-
- dep_req = (struct st21nfca_dep_req_res *)skb->data;
- if (skb->len < size) {
- r = -EIO;
- goto exit;
- }
-
- if (ST21NFCA_NFC_DEP_DID_BIT_SET(dep_req->pfb))
- size++;
- if (ST21NFCA_NFC_DEP_NAD_BIT_SET(dep_req->pfb))
- size++;
-
- if (skb->len < size) {
- r = -EIO;
- goto exit;
- }
-
- /* Receiving DEP_REQ - Decoding */
- switch (ST21NFCA_NFC_DEP_PFB_TYPE(dep_req->pfb)) {
- case ST21NFCA_NFC_DEP_PFB_I_PDU:
- info->dep_info.curr_nfc_dep_pni =
- ST21NFCA_NFC_DEP_PFB_PNI(dep_req->pfb);
- break;
- case ST21NFCA_NFC_DEP_PFB_ACK_NACK_PDU:
- pr_err("Received a ACK/NACK PDU\n");
- break;
- case ST21NFCA_NFC_DEP_PFB_SUPERVISOR_PDU:
- pr_err("Received a SUPERVISOR PDU\n");
- break;
- }
-
- skb_pull(skb, size);
-
- return nfc_tm_data_received(hdev->ndev, skb);
-exit:
- return r;
-}
-
-static int st21nfca_tm_event_send_data(struct nfc_hci_dev *hdev,
- struct sk_buff *skb)
-{
- u8 cmd0, cmd1;
- int r;
-
- cmd0 = skb->data[1];
- switch (cmd0) {
- case ST21NFCA_NFCIP1_REQ:
- cmd1 = skb->data[2];
- switch (cmd1) {
- case ST21NFCA_NFCIP1_ATR_REQ:
- r = st21nfca_tm_recv_atr_req(hdev, skb);
- break;
- case ST21NFCA_NFCIP1_PSL_REQ:
- r = st21nfca_tm_recv_psl_req(hdev, skb);
- break;
- case ST21NFCA_NFCIP1_DEP_REQ:
- r = st21nfca_tm_recv_dep_req(hdev, skb);
- break;
- default:
- return 1;
- }
- default:
- return 1;
- }
- return r;
-}
-
-/*
- * Returns:
- * <= 0: driver handled the event, skb consumed
- * 1: driver does not handle the event, please do standard processing
- */
-int st21nfca_dep_event_received(struct nfc_hci_dev *hdev,
- u8 event, struct sk_buff *skb)
-{
- int r = 0;
- struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
-
- pr_debug("dep event: %d\n", event);
-
- switch (event) {
- case ST21NFCA_EVT_CARD_ACTIVATED:
- info->dep_info.curr_nfc_dep_pni = 0;
- break;
- case ST21NFCA_EVT_CARD_DEACTIVATED:
- break;
- case ST21NFCA_EVT_FIELD_ON:
- break;
- case ST21NFCA_EVT_FIELD_OFF:
- break;
- case ST21NFCA_EVT_SEND_DATA:
- r = st21nfca_tm_event_send_data(hdev, skb);
- if (r < 0)
- return r;
- return 0;
- default:
- return 1;
- }
- kfree_skb(skb);
- return r;
-}
-EXPORT_SYMBOL(st21nfca_dep_event_received);
-
-static void st21nfca_im_send_psl_req(struct nfc_hci_dev *hdev, u8 did, u8 bsi,
- u8 bri, u8 lri)
-{
- struct sk_buff *skb;
- struct st21nfca_psl_req *psl_req;
- struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
-
- skb =
- alloc_skb(sizeof(struct st21nfca_psl_req) + 1, GFP_KERNEL);
- if (!skb)
- return;
- skb_reserve(skb, 1);
-
- skb_put(skb, sizeof(struct st21nfca_psl_req));
- psl_req = (struct st21nfca_psl_req *) skb->data;
-
- psl_req->length = sizeof(struct st21nfca_psl_req);
- psl_req->cmd0 = ST21NFCA_NFCIP1_REQ;
- psl_req->cmd1 = ST21NFCA_NFCIP1_PSL_REQ;
- psl_req->did = did;
- psl_req->brs = (0x30 & bsi << 4) | (bri & 0x03);
- psl_req->fsl = lri;
-
- *skb_push(skb, 1) = info->dep_info.to | 0x10;
-
- st21nfca_im_send_pdu(info, skb);
-}
-
-#define ST21NFCA_CB_TYPE_READER_F 1
-static void st21nfca_im_recv_atr_res_cb(void *context, struct sk_buff *skb,
- int err)
-{
- struct st21nfca_hci_info *info = context;
- struct st21nfca_atr_res *atr_res;
- int r;
-
- if (err != 0)
- return;
-
- if (!skb)
- return;
-
- switch (info->async_cb_type) {
- case ST21NFCA_CB_TYPE_READER_F:
- skb_trim(skb, skb->len - 1);
- atr_res = (struct st21nfca_atr_res *)skb->data;
- r = nfc_set_remote_general_bytes(info->hdev->ndev,
- atr_res->gbi,
- skb->len - sizeof(struct st21nfca_atr_res));
- if (r < 0)
- return;
-
- if (atr_res->to >= 0x0e)
- info->dep_info.to = 0x0e;
- else
- info->dep_info.to = atr_res->to + 1;
-
- info->dep_info.to |= 0x10;
-
- r = nfc_dep_link_is_up(info->hdev->ndev, info->dep_info.idx,
- NFC_COMM_PASSIVE, NFC_RF_INITIATOR);
- if (r < 0)
- return;
-
- info->dep_info.curr_nfc_dep_pni = 0;
- if (ST21NFCA_PP2LRI(atr_res->ppi) != info->dep_info.lri)
- st21nfca_im_send_psl_req(info->hdev, atr_res->did,
- atr_res->bsi, atr_res->bri,
- ST21NFCA_PP2LRI(atr_res->ppi));
- break;
- default:
- kfree_skb(skb);
- break;
- }
-}
-
-int st21nfca_im_send_atr_req(struct nfc_hci_dev *hdev, u8 *gb, size_t gb_len)
-{
- struct sk_buff *skb;
- struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
- struct st21nfca_atr_req *atr_req;
- struct nfc_target *target;
- uint size;
-
- info->dep_info.to = ST21NFCA_DEFAULT_TIMEOUT;
- size = ST21NFCA_ATR_REQ_MIN_SIZE + gb_len;
- if (size > ST21NFCA_ATR_REQ_MAX_SIZE) {
- PROTOCOL_ERR("14.6.1.1");
- return -EINVAL;
- }
-
- skb =
- alloc_skb(sizeof(struct st21nfca_atr_req) + gb_len + 1, GFP_KERNEL);
- if (!skb)
- return -ENOMEM;
-
- skb_reserve(skb, 1);
-
- skb_put(skb, sizeof(struct st21nfca_atr_req));
-
- atr_req = (struct st21nfca_atr_req *)skb->data;
- memset(atr_req, 0, sizeof(struct st21nfca_atr_req));
-
- atr_req->cmd0 = ST21NFCA_NFCIP1_REQ;
- atr_req->cmd1 = ST21NFCA_NFCIP1_ATR_REQ;
- memset(atr_req->nfcid3, 0, NFC_NFCID3_MAXSIZE);
- target = hdev->ndev->targets;
-
- if (target->sensf_res_len > 0)
- memcpy(atr_req->nfcid3, target->sensf_res,
- target->sensf_res_len);
- else
- get_random_bytes(atr_req->nfcid3, NFC_NFCID3_MAXSIZE);
-
- atr_req->did = 0x0;
-
- atr_req->bsi = 0x00;
- atr_req->bri = 0x00;
- atr_req->ppi = ST21NFCA_LR_BITS_PAYLOAD_SIZE_254B;
- if (gb_len) {
- atr_req->ppi |= ST21NFCA_GB_BIT;
- memcpy(skb_put(skb, gb_len), gb, gb_len);
- }
- atr_req->length = sizeof(struct st21nfca_atr_req) + hdev->gb_len;
-
- *skb_push(skb, 1) = info->dep_info.to | 0x10; /* timeout */
-
- info->async_cb_type = ST21NFCA_CB_TYPE_READER_F;
- info->async_cb_context = info;
- info->async_cb = st21nfca_im_recv_atr_res_cb;
- info->dep_info.bri = atr_req->bri;
- info->dep_info.bsi = atr_req->bsi;
- info->dep_info.lri = ST21NFCA_PP2LRI(atr_req->ppi);
-
- return nfc_hci_send_cmd_async(hdev, ST21NFCA_RF_READER_F_GATE,
- ST21NFCA_WR_XCHG_DATA, skb->data,
- skb->len, info->async_cb, info);
-}
-EXPORT_SYMBOL(st21nfca_im_send_atr_req);
-
-static void st21nfca_im_recv_dep_res_cb(void *context, struct sk_buff *skb,
- int err)
-{
- struct st21nfca_hci_info *info = context;
- struct st21nfca_dep_req_res *dep_res;
-
- int size;
-
- if (err != 0)
- return;
-
- if (!skb)
- return;
-
- switch (info->async_cb_type) {
- case ST21NFCA_CB_TYPE_READER_F:
- dep_res = (struct st21nfca_dep_req_res *)skb->data;
-
- size = 3;
- if (skb->len < size)
- goto exit;
-
- if (ST21NFCA_NFC_DEP_DID_BIT_SET(dep_res->pfb))
- size++;
- if (ST21NFCA_NFC_DEP_NAD_BIT_SET(dep_res->pfb))
- size++;
-
- if (skb->len < size)
- goto exit;
-
- skb_trim(skb, skb->len - 1);
-
- /* Receiving DEP_REQ - Decoding */
- switch (ST21NFCA_NFC_DEP_PFB_TYPE(dep_res->pfb)) {
- case ST21NFCA_NFC_DEP_PFB_ACK_NACK_PDU:
- pr_err("Received a ACK/NACK PDU\n");
- case ST21NFCA_NFC_DEP_PFB_I_PDU:
- info->dep_info.curr_nfc_dep_pni =
- ST21NFCA_NFC_DEP_PFB_PNI(dep_res->pfb + 1);
- size++;
- skb_pull(skb, size);
- nfc_tm_data_received(info->hdev->ndev, skb);
- break;
- case ST21NFCA_NFC_DEP_PFB_SUPERVISOR_PDU:
- pr_err("Received a SUPERVISOR PDU\n");
- skb_pull(skb, size);
- *skb_push(skb, 1) = ST21NFCA_NFCIP1_DEP_REQ;
- *skb_push(skb, 1) = ST21NFCA_NFCIP1_REQ;
- *skb_push(skb, 1) = skb->len;
- *skb_push(skb, 1) = info->dep_info.to | 0x10;
-
- st21nfca_im_send_pdu(info, skb);
- break;
- }
-
- return;
- default:
- break;
- }
-
-exit:
- kfree_skb(skb);
-}
-
-int st21nfca_im_send_dep_req(struct nfc_hci_dev *hdev, struct sk_buff *skb)
-{
- struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
-
- info->async_cb_type = ST21NFCA_CB_TYPE_READER_F;
- info->async_cb_context = info;
- info->async_cb = st21nfca_im_recv_dep_res_cb;
-
- *skb_push(skb, 1) = info->dep_info.curr_nfc_dep_pni;
- *skb_push(skb, 1) = ST21NFCA_NFCIP1_DEP_REQ;
- *skb_push(skb, 1) = ST21NFCA_NFCIP1_REQ;
- *skb_push(skb, 1) = skb->len;
-
- *skb_push(skb, 1) = info->dep_info.to | 0x10;
-
- return nfc_hci_send_cmd_async(hdev, ST21NFCA_RF_READER_F_GATE,
- ST21NFCA_WR_XCHG_DATA,
- skb->data, skb->len,
- info->async_cb, info);
-}
-EXPORT_SYMBOL(st21nfca_im_send_dep_req);
-
-void st21nfca_dep_init(struct nfc_hci_dev *hdev)
-{
- struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
-
- INIT_WORK(&info->dep_info.tx_work, st21nfca_tx_work);
- info->dep_info.curr_nfc_dep_pni = 0;
- info->dep_info.idx = 0;
- info->dep_info.to = ST21NFCA_DEFAULT_TIMEOUT;
-}
-EXPORT_SYMBOL(st21nfca_dep_init);
-
-void st21nfca_dep_deinit(struct nfc_hci_dev *hdev)
-{
- struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
-
- cancel_work_sync(&info->dep_info.tx_work);
-}
-EXPORT_SYMBOL(st21nfca_dep_deinit);
+++ /dev/null
-/*
- * 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 __ST21NFCA_DEP_H
-#define __ST21NFCA_DEP_H
-
-#include <linux/skbuff.h>
-#include <linux/workqueue.h>
-
-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;
-
-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);
-#endif /* __ST21NFCA_DEP_H */
+++ /dev/null
-/*
- * 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/>.
- */
-
-#include <net/nfc/hci.h>
-
-#include "st21nfca.h"
-#include "st21nfca_se.h"
-
-#define ST21NFCA_EVT_UICC_ACTIVATE 0x10
-#define ST21NFCA_EVT_UICC_DEACTIVATE 0x13
-#define ST21NFCA_EVT_SE_HARD_RESET 0x20
-#define ST21NFCA_EVT_SE_SOFT_RESET 0x11
-#define ST21NFCA_EVT_SE_END_OF_APDU_TRANSFER 0x21
-#define ST21NFCA_EVT_SE_ACTIVATE 0x22
-#define ST21NFCA_EVT_SE_DEACTIVATE 0x23
-
-#define ST21NFCA_EVT_TRANSMIT_DATA 0x10
-#define ST21NFCA_EVT_WTX_REQUEST 0x11
-
-#define ST21NFCA_EVT_CONNECTIVITY 0x10
-#define ST21NFCA_EVT_TRANSACTION 0x12
-
-#define ST21NFCA_ESE_HOST_ID 0xc0
-
-#define ST21NFCA_SE_TO_HOT_PLUG 1000
-/* Connectivity pipe only */
-#define ST21NFCA_SE_COUNT_PIPE_UICC 0x01
-/* Connectivity + APDU Reader pipe */
-#define ST21NFCA_SE_COUNT_PIPE_EMBEDDED 0x02
-
-#define ST21NFCA_SE_MODE_OFF 0x00
-#define ST21NFCA_SE_MODE_ON 0x01
-
-#define ST21NFCA_PARAM_ATR 0x01
-#define ST21NFCA_ATR_DEFAULT_BWI 0x04
-
-/*
- * WT = 2^BWI/10[s], convert into msecs and add a secure
- * room by increasing by 2 this timeout
- */
-#define ST21NFCA_BWI_TO_TIMEOUT(x) ((1 << x) * 200)
-#define ST21NFCA_ATR_GET_Y_FROM_TD(x) (x >> 4)
-
-/* If TA is present bit 0 is set */
-#define ST21NFCA_ATR_TA_PRESENT(x) (x & 0x01)
-/* If TB is present bit 1 is set */
-#define ST21NFCA_ATR_TB_PRESENT(x) (x & 0x02)
-
-static u8 st21nfca_se_get_bwi(struct nfc_hci_dev *hdev)
-{
- int i;
- u8 td;
- struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
-
- /* Bits 8 to 5 of the first TB for T=1 encode BWI from zero to nine */
- for (i = 1; i < ST21NFCA_ESE_MAX_LENGTH; i++) {
- td = ST21NFCA_ATR_GET_Y_FROM_TD(info->se_info.atr[i]);
- if (ST21NFCA_ATR_TA_PRESENT(td))
- i++;
- if (ST21NFCA_ATR_TB_PRESENT(td)) {
- i++;
- return info->se_info.atr[i] >> 4;
- }
- }
- return ST21NFCA_ATR_DEFAULT_BWI;
-}
-
-static void st21nfca_se_get_atr(struct nfc_hci_dev *hdev)
-{
- int r;
- struct sk_buff *skb;
- struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
-
- r = nfc_hci_get_param(hdev, ST21NFCA_APDU_READER_GATE,
- ST21NFCA_PARAM_ATR, &skb);
- if (r < 0)
- return;
-
- if (skb->len <= ST21NFCA_ESE_MAX_LENGTH) {
- memcpy(info->se_info.atr, skb->data, skb->len);
- info->se_info.wt_timeout =
- ST21NFCA_BWI_TO_TIMEOUT(st21nfca_se_get_bwi(hdev));
- }
- kfree_skb(skb);
-}
-
-static int st21nfca_hci_control_se(struct nfc_hci_dev *hdev, u32 se_idx,
- u8 state)
-{
- struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
- int r;
- struct sk_buff *sk_host_list;
- u8 se_event, host_id;
-
- switch (se_idx) {
- case NFC_HCI_UICC_HOST_ID:
- se_event = (state == ST21NFCA_SE_MODE_ON ?
- ST21NFCA_EVT_UICC_ACTIVATE :
- ST21NFCA_EVT_UICC_DEACTIVATE);
-
- info->se_info.count_pipes = 0;
- info->se_info.expected_pipes = ST21NFCA_SE_COUNT_PIPE_UICC;
- break;
- case ST21NFCA_ESE_HOST_ID:
- se_event = (state == ST21NFCA_SE_MODE_ON ?
- ST21NFCA_EVT_SE_ACTIVATE :
- ST21NFCA_EVT_SE_DEACTIVATE);
-
- info->se_info.count_pipes = 0;
- info->se_info.expected_pipes = ST21NFCA_SE_COUNT_PIPE_EMBEDDED;
- break;
- default:
- return -EINVAL;
- }
-
- /*
- * Wait for an EVT_HOT_PLUG in order to
- * retrieve a relevant host list.
- */
- reinit_completion(&info->se_info.req_completion);
- r = nfc_hci_send_event(hdev, ST21NFCA_DEVICE_MGNT_GATE, se_event,
- NULL, 0);
- if (r < 0)
- return r;
-
- mod_timer(&info->se_info.se_active_timer, jiffies +
- msecs_to_jiffies(ST21NFCA_SE_TO_HOT_PLUG));
- info->se_info.se_active = true;
-
- /* Ignore return value and check in any case the host_list */
- wait_for_completion_interruptible(&info->se_info.req_completion);
-
- r = nfc_hci_get_param(hdev, NFC_HCI_ADMIN_GATE,
- NFC_HCI_ADMIN_HOST_LIST,
- &sk_host_list);
- if (r < 0)
- return r;
-
- host_id = sk_host_list->data[sk_host_list->len - 1];
- kfree_skb(sk_host_list);
-
- if (state == ST21NFCA_SE_MODE_ON && host_id == se_idx)
- return se_idx;
- else if (state == ST21NFCA_SE_MODE_OFF && host_id != se_idx)
- return se_idx;
-
- return -1;
-}
-
-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 (info->se_status->is_uicc_present) {
- nfc_add_se(hdev->ndev, NFC_HCI_UICC_HOST_ID, NFC_SE_UICC);
- se_count++;
- }
-
- if (info->se_status->is_ese_present) {
- nfc_add_se(hdev->ndev, ST21NFCA_ESE_HOST_ID, NFC_SE_EMBEDDED);
- se_count++;
- }
-
- return !se_count;
-}
-EXPORT_SYMBOL(st21nfca_hci_discover_se);
-
-int st21nfca_hci_enable_se(struct nfc_hci_dev *hdev, u32 se_idx)
-{
- int r;
-
- /*
- * According to upper layer, se_idx == NFC_SE_UICC when
- * info->se_status->is_uicc_enable is true should never happen.
- * 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,
- ST21NFCA_EVT_SE_SOFT_RESET, NULL, 0);
- if (r < 0)
- return r;
- } else if (r < 0) {
- /*
- * The activation tentative failed, the secure element
- * is not connected. Remove from the list.
- */
- nfc_remove_se(hdev->ndev, se_idx);
- return r;
- }
-
- return 0;
-}
-EXPORT_SYMBOL(st21nfca_hci_enable_se);
-
-int st21nfca_hci_disable_se(struct nfc_hci_dev *hdev, u32 se_idx)
-{
- int r;
-
- /*
- * According to upper layer, se_idx == NFC_SE_UICC when
- * info->se_status->is_uicc_enable is true should never happen
- * Same for eSE.
- */
- r = st21nfca_hci_control_se(hdev, se_idx, ST21NFCA_SE_MODE_OFF);
- if (r < 0)
- return r;
-
- return 0;
-}
-EXPORT_SYMBOL(st21nfca_hci_disable_se);
-
-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)
-{
- struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
-
- pr_debug("se_io %x\n", se_idx);
-
- switch (se_idx) {
- case ST21NFCA_ESE_HOST_ID:
- info->se_info.cb = cb;
- info->se_info.cb_context = cb_context;
- mod_timer(&info->se_info.bwi_timer, jiffies +
- msecs_to_jiffies(info->se_info.wt_timeout));
- info->se_info.bwi_active = true;
- return nfc_hci_send_event(hdev, ST21NFCA_APDU_READER_GATE,
- ST21NFCA_EVT_TRANSMIT_DATA,
- apdu, apdu_length);
- default:
- return -ENODEV;
- }
-}
-EXPORT_SYMBOL(st21nfca_hci_se_io);
-
-static void st21nfca_se_wt_timeout(unsigned long data)
-{
- /*
- * No answer from the secure element
- * within the defined timeout.
- * Let's send a reset request as recovery procedure.
- * According to the situation, we first try to send a software reset
- * to the secure element. If the next command is still not
- * answering in time, we send to the CLF a secure element hardware
- * reset request.
- */
- /* hardware reset managed through VCC_UICC_OUT power supply */
- u8 param = 0x01;
- struct st21nfca_hci_info *info = (struct st21nfca_hci_info *) data;
-
- pr_debug("\n");
-
- info->se_info.bwi_active = false;
-
- if (!info->se_info.xch_error) {
- info->se_info.xch_error = true;
- nfc_hci_send_event(info->hdev, ST21NFCA_APDU_READER_GATE,
- ST21NFCA_EVT_SE_SOFT_RESET, NULL, 0);
- } else {
- info->se_info.xch_error = false;
- nfc_hci_send_event(info->hdev, ST21NFCA_DEVICE_MGNT_GATE,
- ST21NFCA_EVT_SE_HARD_RESET, ¶m, 1);
- }
- info->se_info.cb(info->se_info.cb_context, NULL, 0, -ETIME);
-}
-
-static void st21nfca_se_activation_timeout(unsigned long data)
-{
- struct st21nfca_hci_info *info = (struct st21nfca_hci_info *) data;
-
- pr_debug("\n");
-
- info->se_info.se_active = false;
-
- complete(&info->se_info.req_completion);
-}
-
-/*
- * Returns:
- * <= 0: driver handled the event, skb consumed
- * 1: driver does not handle the event, please do standard processing
- */
-int st21nfca_connectivity_event_received(struct nfc_hci_dev *hdev, u8 host,
- u8 event, struct sk_buff *skb)
-{
- int r = 0;
- struct device *dev = &hdev->ndev->dev;
- struct nfc_evt_transaction *transaction;
-
- pr_debug("connectivity gate event: %x\n", event);
-
- switch (event) {
- case ST21NFCA_EVT_CONNECTIVITY:
- break;
- case ST21NFCA_EVT_TRANSACTION:
- /*
- * According to specification etsi 102 622
- * 11.2.2.4 EVT_TRANSACTION Table 52
- * Description Tag Length
- * AID 81 5 to 16
- * PARAMETERS 82 0 to 255
- */
- if (skb->len < NFC_MIN_AID_LENGTH + 2 &&
- skb->data[0] != NFC_EVT_TRANSACTION_AID_TAG)
- return -EPROTO;
-
- transaction = (struct nfc_evt_transaction *)devm_kzalloc(dev,
- skb->len - 2, GFP_KERNEL);
-
- transaction->aid_len = skb->data[1];
- memcpy(transaction->aid, &skb->data[2],
- transaction->aid_len);
-
- /* Check next byte is PARAMETERS tag (82) */
- if (skb->data[transaction->aid_len + 2] !=
- NFC_EVT_TRANSACTION_PARAMS_TAG)
- return -EPROTO;
-
- transaction->params_len = skb->data[transaction->aid_len + 3];
- memcpy(transaction->params, skb->data +
- transaction->aid_len + 4, transaction->params_len);
-
- r = nfc_se_transaction(hdev->ndev, host, transaction);
- break;
- default:
- return 1;
- }
- kfree_skb(skb);
- return r;
-}
-EXPORT_SYMBOL(st21nfca_connectivity_event_received);
-
-int st21nfca_apdu_reader_event_received(struct nfc_hci_dev *hdev,
- u8 event, struct sk_buff *skb)
-{
- int r = 0;
- struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
-
- pr_debug("apdu reader gate event: %x\n", event);
-
- switch (event) {
- case ST21NFCA_EVT_TRANSMIT_DATA:
- del_timer_sync(&info->se_info.bwi_timer);
- info->se_info.bwi_active = false;
- r = nfc_hci_send_event(hdev, ST21NFCA_DEVICE_MGNT_GATE,
- ST21NFCA_EVT_SE_END_OF_APDU_TRANSFER, NULL, 0);
- if (r < 0)
- goto exit;
-
- info->se_info.cb(info->se_info.cb_context,
- skb->data, skb->len, 0);
- break;
- case ST21NFCA_EVT_WTX_REQUEST:
- mod_timer(&info->se_info.bwi_timer, jiffies +
- msecs_to_jiffies(info->se_info.wt_timeout));
- break;
- }
-
-exit:
- kfree_skb(skb);
- return r;
-}
-EXPORT_SYMBOL(st21nfca_apdu_reader_event_received);
-
-void st21nfca_se_init(struct nfc_hci_dev *hdev)
-{
- struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
-
- init_completion(&info->se_info.req_completion);
- /* initialize timers */
- init_timer(&info->se_info.bwi_timer);
- info->se_info.bwi_timer.data = (unsigned long)info;
- info->se_info.bwi_timer.function = st21nfca_se_wt_timeout;
- info->se_info.bwi_active = false;
-
- init_timer(&info->se_info.se_active_timer);
- info->se_info.se_active_timer.data = (unsigned long)info;
- info->se_info.se_active_timer.function = st21nfca_se_activation_timeout;
- info->se_info.se_active = false;
-
- info->se_info.count_pipes = 0;
- info->se_info.expected_pipes = 0;
-
- info->se_info.xch_error = false;
-
- info->se_info.wt_timeout =
- ST21NFCA_BWI_TO_TIMEOUT(ST21NFCA_ATR_DEFAULT_BWI);
-}
-EXPORT_SYMBOL(st21nfca_se_init);
-
-void st21nfca_se_deinit(struct nfc_hci_dev *hdev)
-{
- struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
-
- if (info->se_info.bwi_active)
- del_timer_sync(&info->se_info.bwi_timer);
- if (info->se_info.se_active)
- del_timer_sync(&info->se_info.se_active_timer);
-
- info->se_info.bwi_active = false;
- info->se_info.se_active = false;
-}
-EXPORT_SYMBOL(st21nfca_se_deinit);
+++ /dev/null
-/*
- * 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 __ST21NFCA_SE_H
-#define __ST21NFCA_SE_H
-
-#include <linux/skbuff.h>
-#include <linux/workqueue.h>
-
-/*
- * 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
-
-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;
-};
-
-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);
-#endif /* __ST21NFCA_SE_H */
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / commitdiff