From b4b7ff4b08e691656c9d77c758fc355833128ac0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 20 Jan 2016 14:01:31 -0300 Subject: Linux-libre 4.4-gnu --- drivers/nfc/st21nfca/st21nfca.c | 1064 --------------------------------------- 1 file changed, 1064 deletions(-) delete mode 100644 drivers/nfc/st21nfca/st21nfca.c (limited to 'drivers/nfc/st21nfca/st21nfca.c') diff --git a/drivers/nfc/st21nfca/st21nfca.c b/drivers/nfc/st21nfca/st21nfca.c deleted file mode 100644 index 051286562..000000000 --- a/drivers/nfc/st21nfca/st21nfca.c +++ /dev/null @@ -1,1064 +0,0 @@ -/* - * 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 . - */ - -#include -#include -#include -#include - -#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); -- cgit v1.2.3-54-g00ecf