/******************************************************************************
*
* Copyright (C) 2010-2014 Broadcom Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
/******************************************************************************
*
* This is the main implementation file for the NFA device manager.
*
******************************************************************************/
#include <string>
#include <android-base/stringprintf.h>
#include <base/logging.h>
#include "nfa_api.h"
#include "nfa_dm_int.h"
using android::base::StringPrintf;
extern bool nfc_debug_enabled;
/*****************************************************************************
** Constants and types
*****************************************************************************/
static const tNFA_SYS_REG nfa_dm_sys_reg = {nfa_dm_sys_enable, nfa_dm_evt_hdlr,
nfa_dm_sys_disable,
nfa_dm_proc_nfcc_power_mode};
tNFA_DM_CB nfa_dm_cb = {};
#define NFA_DM_NUM_ACTIONS (NFA_DM_MAX_EVT & 0x00ff)
/* type for action functions */
typedef bool (*tNFA_DM_ACTION)(tNFA_DM_MSG* p_data);
/* action function list */
const tNFA_DM_ACTION nfa_dm_action[] = {
/* device manager local device API events */
nfa_dm_enable, /* NFA_DM_API_ENABLE_EVT */
nfa_dm_disable, /* NFA_DM_API_DISABLE_EVT */
nfa_dm_set_config, /* NFA_DM_API_SET_CONFIG_EVT */
nfa_dm_get_config, /* NFA_DM_API_GET_CONFIG_EVT */
nfa_dm_act_request_excl_rf_ctrl, /* NFA_DM_API_REQUEST_EXCL_RF_CTRL_EVT */
nfa_dm_act_release_excl_rf_ctrl, /* NFA_DM_API_RELEASE_EXCL_RF_CTRL_EVT */
nfa_dm_act_enable_polling, /* NFA_DM_API_ENABLE_POLLING_EVT */
nfa_dm_act_disable_polling, /* NFA_DM_API_DISABLE_POLLING_EVT */
nfa_dm_act_enable_listening, /* NFA_DM_API_ENABLE_LISTENING_EVT */
nfa_dm_act_disable_listening, /* NFA_DM_API_DISABLE_LISTENING_EVT */
nfa_dm_act_pause_p2p, /* NFA_DM_API_PAUSE_P2P_EVT */
nfa_dm_act_resume_p2p, /* NFA_DM_API_RESUME_P2P_EVT */
nfa_dm_act_send_raw_frame, /* NFA_DM_API_RAW_FRAME_EVT */
nfa_dm_set_p2p_listen_tech, /* NFA_DM_API_SET_P2P_LISTEN_TECH_EVT */
nfa_dm_act_start_rf_discovery, /* NFA_DM_API_START_RF_DISCOVERY_EVT */
nfa_dm_act_stop_rf_discovery, /* NFA_DM_API_STOP_RF_DISCOVERY_EVT */
nfa_dm_act_set_rf_disc_duration, /* NFA_DM_API_SET_RF_DISC_DURATION_EVT */
nfa_dm_act_select, /* NFA_DM_API_SELECT_EVT */
nfa_dm_act_update_rf_params, /* NFA_DM_API_UPDATE_RF_PARAMS_EVT */
nfa_dm_act_deactivate, /* NFA_DM_API_DEACTIVATE_EVT */
nfa_dm_act_power_off_sleep, /* NFA_DM_API_POWER_OFF_SLEEP_EVT */
nfa_dm_ndef_reg_hdlr, /* NFA_DM_API_REG_NDEF_HDLR_EVT */
nfa_dm_ndef_dereg_hdlr, /* NFA_DM_API_DEREG_NDEF_HDLR_EVT */
nfa_dm_act_reg_vsc, /* NFA_DM_API_REG_VSC_EVT */
nfa_dm_act_send_vsc, /* NFA_DM_API_SEND_VSC_EVT */
nfa_dm_act_disable_timeout, /* NFA_DM_TIMEOUT_DISABLE_EVT */
nfa_dm_set_power_sub_state, /* NFA_DM_API_SET_POWER_SUB_STATE_EVT */
nfa_dm_act_send_raw_vs /* NFA_DM_API_SEND_RAW_VS_EVT */
};
/*****************************************************************************
** Local function prototypes
*****************************************************************************/
static std::string nfa_dm_evt_2_str(uint16_t event);
/*******************************************************************************
**
** Function nfa_dm_init
**
** Description Initialises the NFC device manager
**
** Returns void
**
*******************************************************************************/
void nfa_dm_init(void) {
DLOG_IF(INFO, nfc_debug_enabled) << __func__;
memset(&nfa_dm_cb, 0, sizeof(tNFA_DM_CB));
nfa_dm_cb.poll_disc_handle = NFA_HANDLE_INVALID;
nfa_dm_cb.disc_cb.disc_duration = NFA_DM_DISC_DURATION_POLL;
nfa_dm_cb.nfcc_pwr_mode = NFA_DM_PWR_MODE_FULL;
nfa_dm_cb.pending_power_state = SCREEN_STATE_INVALID;
/* register message handler on NFA SYS */
nfa_sys_register(NFA_ID_DM, &nfa_dm_sys_reg);
}
/*******************************************************************************
**
** Function nfa_dm_evt_hdlr
**
** Description Event handling function for DM
**
**
** Returns void
**
*******************************************************************************/
bool nfa_dm_evt_hdlr(NFC_HDR* p_msg) {
bool freebuf = true;
uint16_t event = p_msg->event & 0x00ff;
DLOG_IF(INFO, nfc_debug_enabled) << StringPrintf(
"event: %s (0x%02x)", nfa_dm_evt_2_str(event).c_str(), event);
/* execute action functions */
if (event < NFA_DM_NUM_ACTIONS) {
freebuf = (*nfa_dm_action[event])((tNFA_DM_MSG*)p_msg);
}
return freebuf;
}
/*******************************************************************************
**
** Function nfa_dm_sys_disable
**
** Description This function is called after all subsystems have been
** disabled.
**
** Returns void
**
*******************************************************************************/
void nfa_dm_sys_disable(void) {
/* Disable the DM sub-system */
/* If discovery state is not IDLE or DEACTIVATED and graceful disable, */
/* then we need to deactivate link or stop discovery */
if (nfa_sys_is_graceful_disable()) {
if ((nfa_dm_cb.disc_cb.disc_state == NFA_DM_RFST_IDLE) &&
((nfa_dm_cb.disc_cb.disc_flags & NFA_DM_DISC_FLAGS_DISABLING) == 0)) {
/* discovery is not started */
nfa_dm_disable_complete();
} else {
/* probably waiting to be disabled */
LOG(WARNING) << StringPrintf("DM disc_state state = %d disc_flags:0x%x",
nfa_dm_cb.disc_cb.disc_state,
nfa_dm_cb.disc_cb.disc_flags);
}
} else {
nfa_dm_disable_complete();
}
}
/*******************************************************************************
**
** Function nfa_dm_is_protocol_supported
**
** Description Check if protocol is supported by RW module
**
** Returns TRUE if protocol is supported by NFA
**
*******************************************************************************/
bool nfa_dm_is_protocol_supported(tNFC_PROTOCOL protocol, uint8_t sel_res) {
return ((protocol == NFC_PROTOCOL_T1T) ||
((protocol == NFC_PROTOCOL_T2T) &&
(sel_res == NFC_SEL_RES_NFC_FORUM_T2T)) ||
(protocol == NFC_PROTOCOL_T3T) ||
(protocol == NFC_PROTOCOL_ISO_DEP) ||
(protocol == NFC_PROTOCOL_NFC_DEP) ||
(protocol == NFC_PROTOCOL_T5T) || (protocol == NFC_PROTOCOL_MIFARE));
}
/*******************************************************************************
**
** Function nfa_dm_is_active
**
** Description check if all modules of NFA is done with enable process and
** NFA is not restoring NFCC.
**
** Returns TRUE, if NFA_DM_ENABLE_EVT is reported and it is not
** restoring NFCC
**
*******************************************************************************/
bool nfa_dm_is_active(void) {
DLOG_IF(INFO, nfc_debug_enabled)
<< StringPrintf("flags:0x%x", nfa_dm_cb.flags);
if ((nfa_dm_cb.flags & NFA_DM_FLAGS_DM_IS_ACTIVE) &&
((nfa_dm_cb.flags &
(NFA_DM_FLAGS_ENABLE_EVT_PEND | NFA_DM_FLAGS_NFCC_IS_RESTORING |
NFA_DM_FLAGS_POWER_OFF_SLEEP)) == 0)) {
return true;
} else
return false;
}
/*******************************************************************************
**
** Function nfa_dm_check_set_config
**
** Description Update config parameters only if it's different from NFCC
**
**
** Returns tNFA_STATUS
**
*******************************************************************************/
tNFA_STATUS nfa_dm_check_set_config(uint8_t tlv_list_len, uint8_t* p_tlv_list,
bool app_init) {
uint8_t type, len, *p_value, *p_stored, max_len;
uint8_t xx = 0, updated_len = 0, *p_cur_len;
bool update;
tNFC_STATUS nfc_status;
uint32_t cur_bit;
DLOG_IF(INFO, nfc_debug_enabled) << __func__;
/* We only allow 32 pending SET_CONFIGs */
if (nfa_dm_cb.setcfg_pending_num >= NFA_DM_SETCONFIG_PENDING_MAX) {
LOG(ERROR) << StringPrintf(
"error: pending number of SET_CONFIG "
"exceeded");
return NFA_STATUS_FAILED;
}
while (tlv_list_len - xx >= 2) /* at least type and len */
{
update = false;
type = *(p_tlv_list + xx);
len = *(p_tlv_list + xx + 1);
p_value = p_tlv_list + xx + 2;
p_cur_len = nullptr;
switch (type) {
/*
** Poll F Configuration
*/
case NFC_PMID_PF_RC:
p_stored = nfa_dm_cb.params.pf_rc;
max_len = NCI_PARAM_LEN_PF_RC;
break;
case NFC_PMID_TOTAL_DURATION:
p_stored = nfa_dm_cb.params.total_duration;
max_len = NCI_PARAM_LEN_TOTAL_DURATION;
break;
/*
** Listen A Configuration
*/
case NFC_PMID_LA_BIT_FRAME_SDD:
p_stored = nfa_dm_cb.params.la_bit_frame_sdd;
max_len = NCI_PARAM_LEN_LA_BIT_FRAME_SDD;
p_cur_len = &nfa_dm_cb.params.la_bit_frame_sdd_len;
break;
case NFC_PMID_LA_PLATFORM_CONFIG:
p_stored = nfa_dm_cb.params.la_platform_config;
max_len = NCI_PARAM_LEN_LA_PLATFORM_CONFIG;
p_cur_len = &nfa_dm_cb.params.la_platform_config_len;
break;
case NFC_PMID_LA_SEL_INFO:
p_stored = nfa_dm_cb.params.la_sel_info;
max_len = NCI_PARAM_LEN_LA_SEL_INFO;
p_cur_len = &nfa_dm_cb.params.la_sel_info_len;
break;
case NFC_PMID_LA_NFCID1:
p_stored = nfa_dm_cb.params.la_nfcid1;
max_len = NCI_NFCID1_MAX_LEN;
p_cur_len = &nfa_dm_cb.params.la_nfcid1_len;
break;
case NFC_PMID_LA_HIST_BY:
p_stored = nfa_dm_cb.params.la_hist_by;
max_len = NCI_MAX_HIS_BYTES_LEN;
p_cur_len = &nfa_dm_cb.params.la_hist_by_len;
break;
/*
** Listen B Configuration
*/
case NFC_PMID_LB_SENSB_INFO:
p_stored = nfa_dm_cb.params.lb_sensb_info;
max_len = NCI_PARAM_LEN_LB_SENSB_INFO;
p_cur_len = &nfa_dm_cb.params.lb_sensb_info_len;
break;
case NFC_PMID_LB_NFCID0:
p_stored = nfa_dm_cb.params.lb_nfcid0;
max_len = NCI_PARAM_LEN_LB_NFCID0;
p_cur_len = &nfa_dm_cb.params.lb_nfcid0_len;
break;
case NFC_PMID_LB_APPDATA:
p_stored = nfa_dm_cb.params.lb_appdata;
max_len = NCI_PARAM_LEN_LB_APPDATA;
p_cur_len = &nfa_dm_cb.params.lb_appdata_len;
break;
case NFC_PMID_LB_ADC_FO:
p_stored = nfa_dm_cb.params.lb_adc_fo;
max_len = NCI_PARAM_LEN_LB_ADC_FO;
p_cur_len = &nfa_dm_cb.params.lb_adc_fo_len;
break;
case NFC_PMID_LB_H_INFO:
p_stored = nfa_dm_cb.params.lb_h_info;
max_len = NCI_MAX_ATTRIB_LEN;
p_cur_len = &nfa_dm_cb.params.lb_h_info_len;
break;
/*
** Listen F Configuration
*/
case NFC_PMID_LF_PROTOCOL:
p_stored = nfa_dm_cb.params.lf_protocol;
max_len = NCI_PARAM_LEN_LF_PROTOCOL;
p_cur_len = &nfa_dm_cb.params.lf_protocol_len;
break;
case NFC_PMID_LF_T3T_FLAGS2:
p_stored = nfa_dm_cb.params.lf_t3t_flags2;
max_len = NCI_PARAM_LEN_LF_T3T_FLAGS2;
p_cur_len = &nfa_dm_cb.params.lf_t3t_flags2_len;
break;
case NFC_PMID_LF_T3T_PMM:
p_stored = nfa_dm_cb.params.lf_t3t_pmm;
max_len = NCI_PARAM_LEN_LF_T3T_PMM;
break;
/*
** ISO-DEP and NFC-DEP Configuration
*/
case NFC_PMID_FWI:
p_stored = nfa_dm_cb.params.fwi;
max_len = NCI_PARAM_LEN_FWI;
break;
case NFC_PMID_WT:
p_stored = nfa_dm_cb.params.wt;
max_len = NCI_PARAM_LEN_WT;
break;
case NFC_PMID_ATR_REQ_GEN_BYTES:
p_stored = nfa_dm_cb.params.atr_req_gen_bytes;
max_len = NCI_MAX_GEN_BYTES_LEN;
p_cur_len = &nfa_dm_cb.params.atr_req_gen_bytes_len;
break;
case NFC_PMID_ATR_RES_GEN_BYTES:
p_stored = nfa_dm_cb.params.atr_res_gen_bytes;
max_len = NCI_MAX_GEN_BYTES_LEN;
p_cur_len = &nfa_dm_cb.params.atr_res_gen_bytes_len;
break;
default:
/*
** Listen F Configuration
*/
if ((type >= NFC_PMID_LF_T3T_ID1) &&
(type < NFC_PMID_LF_T3T_ID1 + NFA_CE_LISTEN_INFO_MAX)) {
p_stored = nfa_dm_cb.params.lf_t3t_id[type - NFC_PMID_LF_T3T_ID1];
max_len = NCI_PARAM_LEN_LF_T3T_ID(NFC_GetNCIVersion());
} else {
/* we don't stored this config items */
update = true;
p_stored = nullptr;
}
break;
}
if ((p_stored) && (len <= max_len)) {
if (p_cur_len) {
if (*p_cur_len != len) {
*p_cur_len = len;
update = true;
} else if (memcmp(p_value, p_stored, len)) {
update = true;
} else if (appl_dta_mode_flag && app_init) {
/* In DTA mode, config update is forced so that length of config
* params (i.e update_len) is updated accordingly even for setconfig
* have only one tlv */
update = true;
}
} else if (len == max_len) /* fixed length */
{
if (memcmp(p_value, p_stored, len)) {
update = true;
} else if (appl_dta_mode_flag && app_init) {
/* In DTA mode, config update is forced so that length of config
* params (i.e update_len) is updated accordingly even for setconfig
* have only one tlv */
update = true;
}
}
}
if (update) {
/* we don't store this type */
if (p_stored) {
memcpy(p_stored, p_value, len);
}
/* If need to change TLV in the original list. (Do not modify list if
* app_init) */
if ((updated_len != xx) && (!app_init)) {
memcpy(p_tlv_list + updated_len, p_tlv_list + xx, (len + 2));
}
updated_len += (len + 2);
}
xx += len + 2; /* move to next TLV */
}
/* If any TVLs to update, or if the SetConfig was initiated by the
* application, then send the SET_CONFIG command */
if (((updated_len || app_init) &&
(appl_dta_mode_flag == 0x00 ||
(nfa_dm_cb.eDtaMode & 0x0F) == NFA_DTA_HCEF_MODE)) ||
(appl_dta_mode_flag && app_init)) {
nfc_status = NFC_SetConfig(updated_len, p_tlv_list);
if (nfc_status == NFC_STATUS_OK) {
if ((nfa_dm_cb.eDtaMode & 0x0F) == NFA_DTA_HCEF_MODE) {
nfa_dm_cb.eDtaMode &= ~NFA_DTA_HCEF_MODE;
nfa_dm_cb.eDtaMode |= NFA_DTA_DEFAULT_MODE;
}
/* Keep track of whether we will need to notify NFA_DM_SET_CONFIG_EVT on
* NFC_SET_CONFIG_REVT */
/* Get the next available bit offset for this setconfig (based on how many
* SetConfigs are outstanding) */
cur_bit = (uint32_t)(1 << nfa_dm_cb.setcfg_pending_num);
/* If setconfig is due to NFA_SetConfig: then set the bit
* (NFA_DM_SET_CONFIG_EVT needed on NFC_SET_CONFIG_REVT) */
if (app_init) {
nfa_dm_cb.setcfg_pending_mask |= cur_bit;
}
/* Otherwise setconfig is internal: clear the bit (NFA_DM_SET_CONFIG_EVT
not needed on NFC_SET_CONFIG_REVT) */
else {
nfa_dm_cb.setcfg_pending_mask &= ~cur_bit;
}
/* Increment setcfg_pending counter */
nfa_dm_cb.setcfg_pending_num++;
}
return (nfc_status);
} else {
return NFA_STATUS_OK;
}
}
/*******************************************************************************
**
** Function nfa_dm_nfc_revt_2_str
**
** Description convert nfc revt to string
**
*******************************************************************************/
static std::string nfa_dm_evt_2_str(uint16_t event) {
switch (NFA_SYS_EVT_START(NFA_ID_DM) | event) {
case NFA_DM_API_ENABLE_EVT:
return "NFA_DM_API_ENABLE_EVT";
case NFA_DM_API_DISABLE_EVT:
return "NFA_DM_API_DISABLE_EVT";
case NFA_DM_API_SET_CONFIG_EVT:
return "NFA_DM_API_SET_CONFIG_EVT";
case NFA_DM_API_GET_CONFIG_EVT:
return "NFA_DM_API_GET_CONFIG_EVT";
case NFA_DM_API_REQUEST_EXCL_RF_CTRL_EVT:
return "NFA_DM_API_REQUEST_EXCL_RF_CTRL_EVT";
case NFA_DM_API_RELEASE_EXCL_RF_CTRL_EVT:
return "NFA_DM_API_RELEASE_EXCL_RF_CTRL_EVT";
case NFA_DM_API_ENABLE_POLLING_EVT:
return "NFA_DM_API_ENABLE_POLLING_EVT";
case NFA_DM_API_DISABLE_POLLING_EVT:
return "NFA_DM_API_DISABLE_POLLING_EVT";
case NFA_DM_API_ENABLE_LISTENING_EVT:
return "NFA_DM_API_ENABLE_LISTENING_EVT";
case NFA_DM_API_DISABLE_LISTENING_EVT:
return "NFA_DM_API_DISABLE_LISTENING_EVT";
case NFA_DM_API_PAUSE_P2P_EVT:
return "NFA_DM_API_PAUSE_P2P_EVT";
case NFA_DM_API_RESUME_P2P_EVT:
return "NFA_DM_API_RESUME_P2P_EVT";
case NFA_DM_API_RAW_FRAME_EVT:
return "NFA_DM_API_RAW_FRAME_EVT";
case NFA_DM_API_SET_P2P_LISTEN_TECH_EVT:
return "NFA_DM_API_SET_P2P_LISTEN_TECH_EVT";
case NFA_DM_API_START_RF_DISCOVERY_EVT:
return "NFA_DM_API_START_RF_DISCOVERY_EVT";
case NFA_DM_API_STOP_RF_DISCOVERY_EVT:
return "NFA_DM_API_STOP_RF_DISCOVERY_EVT";
case NFA_DM_API_SET_RF_DISC_DURATION_EVT:
return "NFA_DM_API_SET_RF_DISC_DURATION_EVT";
case NFA_DM_API_SELECT_EVT:
return "NFA_DM_API_SELECT_EVT";
case NFA_DM_API_UPDATE_RF_PARAMS_EVT:
return "NFA_DM_API_UPDATE_RF_PARAMS_EVT";
case NFA_DM_API_DEACTIVATE_EVT:
return "NFA_DM_API_DEACTIVATE_EVT";
case NFA_DM_API_POWER_OFF_SLEEP_EVT:
return "NFA_DM_API_POWER_OFF_SLEEP_EVT";
case NFA_DM_API_REG_NDEF_HDLR_EVT:
return "NFA_DM_API_REG_NDEF_HDLR_EVT";
case NFA_DM_API_DEREG_NDEF_HDLR_EVT:
return "NFA_DM_API_DEREG_NDEF_HDLR_EVT";
case NFA_DM_TIMEOUT_DISABLE_EVT:
return "NFA_DM_TIMEOUT_DISABLE_EVT";
case NFA_DM_API_SET_POWER_SUB_STATE_EVT:
return "NFA_DM_API_SET_POWER_SUB_STATE_EVT";
}
return "Unknown or Vendor Specific";
}