/****************************************************************************** * * Copyright (C) 2002-2012 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 file contains the HID HOST API entry points * ******************************************************************************/ #include #include #include #include "common/bt_target.h" #include "osi/allocator.h" #include "stack/bt_types.h" #include "stack/hiddefs.h" #include "stack/hidh_api.h" #include "hid_int.h" #include "stack/btm_api.h" #include "stack/btu.h" #include "btm_int.h" #if (HID_HOST_INCLUDED == TRUE) #if HID_DYNAMIC_MEMORY == FALSE tHID_HOST_CTB hh_cb; #else tHID_HOST_CTB *hidh_cb_ptr = NULL; #endif static void hidh_search_callback (UINT16 sdp_result); /******************************************************************************* ** ** Function HID_HostGetSDPRecord ** ** Description This function reads the device SDP record ** ** Returns tHID_STATUS ** *******************************************************************************/ tHID_STATUS HID_HostGetSDPRecord ( BD_ADDR addr, tSDP_DISCOVERY_DB *p_db, UINT32 db_len, tHID_HOST_SDP_CALLBACK *sdp_cback ) { tSDP_UUID uuid_list; if ( hh_cb.sdp_busy ) { return HID_ERR_SDP_BUSY; } uuid_list.len = 2; uuid_list.uu.uuid16 = UUID_SERVCLASS_HUMAN_INTERFACE; hh_cb.p_sdp_db = p_db; SDP_InitDiscoveryDb (p_db, db_len, 1, &uuid_list, 0, NULL); if (SDP_ServiceSearchRequest (addr, p_db, hidh_search_callback)) { hh_cb.sdp_cback = sdp_cback ; hh_cb.sdp_busy = TRUE; return HID_SUCCESS; } else { return HID_ERR_NO_RESOURCES; } } void hidh_get_str_attr( tSDP_DISC_REC *p_rec, UINT16 attr_id, UINT16 max_len, char *str ) { tSDP_DISC_ATTR *p_attr; UINT16 name_len; if ((p_attr = SDP_FindAttributeInRec(p_rec, attr_id)) != NULL) { if ((name_len = SDP_DISC_ATTR_LEN(p_attr->attr_len_type)) < max_len ) { memcpy( str, (char *) p_attr->attr_value.v.array, name_len ); str[name_len] = '\0'; } else { memcpy( str, (char *) p_attr->attr_value.v.array, max_len - 1 ); str[max_len - 1] = '\0'; } } else { str[0] = '\0'; } } static void hidh_search_callback (UINT16 sdp_result) { tSDP_DISCOVERY_DB *p_db = hh_cb.p_sdp_db; tSDP_DISC_REC *p_rec; tSDP_DISC_ATTR *p_attr, *p_subattr1, *p_subattr2, *p_repdesc; tBT_UUID hid_uuid; tHID_DEV_SDP_INFO *p_nvi = &hh_cb.sdp_rec; UINT16 attr_mask = 0; hid_uuid.len = LEN_UUID_16; hid_uuid.uu.uuid16 = UUID_SERVCLASS_HUMAN_INTERFACE; hh_cb.sdp_busy = FALSE; if (sdp_result != SDP_SUCCESS) { hh_cb.sdp_cback(sdp_result, 0, NULL); return; } if ((p_rec = SDP_FindServiceUUIDInDb (p_db, &hid_uuid, NULL)) == NULL) { hh_cb.sdp_cback(HID_SDP_NO_SERV_UUID, 0, NULL); return; } memset (&hh_cb.sdp_rec, 0, sizeof( tHID_DEV_SDP_INFO )); /* First, verify the mandatory fields we care about */ if (((p_attr = SDP_FindAttributeInRec (p_rec, ATTR_ID_HID_DESCRIPTOR_LIST)) == NULL) || (SDP_DISC_ATTR_TYPE(p_attr->attr_len_type) != DATA_ELE_SEQ_DESC_TYPE) || ((p_subattr1 = p_attr->attr_value.v.p_sub_attr) == NULL) || (SDP_DISC_ATTR_TYPE(p_subattr1->attr_len_type) != DATA_ELE_SEQ_DESC_TYPE) || ((p_subattr2 = p_subattr1->attr_value.v.p_sub_attr) == NULL) || ((p_repdesc = p_subattr2->p_next_attr) == NULL) || (SDP_DISC_ATTR_TYPE(p_repdesc->attr_len_type) != TEXT_STR_DESC_TYPE)) { hh_cb.sdp_cback(HID_SDP_MANDATORY_MISSING, 0, NULL); return; } if ((p_nvi->dscp_info.dl_len = SDP_DISC_ATTR_LEN(p_repdesc->attr_len_type)) != 0) { p_nvi->dscp_info.dsc_list = (UINT8 *) &p_repdesc->attr_value; } if (((p_attr = SDP_FindAttributeInRec (p_rec, ATTR_ID_HID_VIRTUAL_CABLE)) != NULL) && (p_attr->attr_value.v.u8) ) { attr_mask |= HID_VIRTUAL_CABLE; } if (((p_attr = SDP_FindAttributeInRec (p_rec, ATTR_ID_HID_RECONNECT_INITIATE)) != NULL) && (p_attr->attr_value.v.u8) ) { attr_mask |= HID_RECONN_INIT; } if (((p_attr = SDP_FindAttributeInRec (p_rec, ATTR_ID_HID_NORMALLY_CONNECTABLE)) != NULL) && (p_attr->attr_value.v.u8) ) { attr_mask |= HID_NORMALLY_CONNECTABLE; } if (((p_attr = SDP_FindAttributeInRec (p_rec, ATTR_ID_HID_SDP_DISABLE)) != NULL) && (p_attr->attr_value.v.u8) ) { attr_mask |= HID_SDP_DISABLE; } if (((p_attr = SDP_FindAttributeInRec (p_rec, ATTR_ID_HID_BATTERY_POWER)) != NULL) && (p_attr->attr_value.v.u8) ) { attr_mask |= HID_BATTERY_POWER; } if (((p_attr = SDP_FindAttributeInRec (p_rec, ATTR_ID_HID_REMOTE_WAKE)) != NULL) && (p_attr->attr_value.v.u8) ) { attr_mask |= HID_REMOTE_WAKE; } hidh_get_str_attr( p_rec, ATTR_ID_SERVICE_NAME, HID_MAX_SVC_NAME_LEN, p_nvi->svc_name ); hidh_get_str_attr( p_rec, ATTR_ID_SERVICE_DESCRIPTION, HID_MAX_SVC_DESCR_LEN, p_nvi->svc_descr ); hidh_get_str_attr( p_rec, ATTR_ID_PROVIDER_NAME, HID_MAX_PROV_NAME_LEN, p_nvi->prov_name ); if (((p_attr = SDP_FindAttributeInRec (p_rec, ATTR_ID_HID_DEVICE_RELNUM)) != NULL)) { p_nvi->rel_num = p_attr->attr_value.v.u16; } if (((p_attr = SDP_FindAttributeInRec (p_rec, ATTR_ID_HID_COUNTRY_CODE)) != NULL)) { p_nvi->ctry_code = p_attr->attr_value.v.u8; } if (((p_attr = SDP_FindAttributeInRec (p_rec, ATTR_ID_HID_DEVICE_SUBCLASS)) != NULL)) { p_nvi->sub_class = p_attr->attr_value.v.u8; } if (((p_attr = SDP_FindAttributeInRec (p_rec, ATTR_ID_HID_PARSER_VERSION)) != NULL)) { p_nvi->hpars_ver = p_attr->attr_value.v.u16; } if (((p_attr = SDP_FindAttributeInRec (p_rec, ATTR_ID_HID_LINK_SUPERVISION_TO)) != NULL)) { attr_mask |= HID_SUP_TOUT_AVLBL; p_nvi->sup_timeout = p_attr->attr_value.v.u16; } if (((p_attr = SDP_FindAttributeInRec (p_rec, ATTR_ID_HID_SSR_HOST_MAX_LAT)) != NULL)) { attr_mask |= HID_SSR_MAX_LATENCY; p_nvi->ssr_max_latency = p_attr->attr_value.v.u16; } else { p_nvi->ssr_max_latency = HID_SSR_PARAM_INVALID; } if (((p_attr = SDP_FindAttributeInRec (p_rec, ATTR_ID_HID_SSR_HOST_MIN_TOUT)) != NULL)) { attr_mask |= HID_SSR_MIN_TOUT; p_nvi->ssr_min_tout = p_attr->attr_value.v.u16; } else { p_nvi->ssr_min_tout = HID_SSR_PARAM_INVALID; } hh_cb.sdp_rec.p_sdp_layer_rec = p_rec; hh_cb.sdp_cback(SDP_SUCCESS, attr_mask, &hh_cb.sdp_rec); } /******************************************************************************* ** ** Function HID_HostInit ** ** Description This function initializes the control block and trace variable ** ** Returns tHID_STATUS ** *******************************************************************************/ tHID_STATUS HID_HostInit (void) { #if (HID_DYNAMIC_MEMORY) if (!hidh_cb_ptr) { hidh_cb_ptr = (tHID_HOST_CTB *)osi_malloc(sizeof(tHID_HOST_CTB)); if (!hidh_cb_ptr) { return HID_ERR_NO_RESOURCES; } } #endif /* #if (HID_DYNAMIC_MEMORY) */ memset(&hh_cb, 0, sizeof(tHID_HOST_CTB)); #if defined(HIDH_INITIAL_TRACE_LEVEL) hh_cb.trace_level = HIDH_INITIAL_TRACE_LEVEL; #else hh_cb.trace_level = BT_TRACE_LEVEL_NONE; #endif return HID_SUCCESS; } /******************************************************************************* ** ** Function HID_HostInit ** ** Description This function deinitializes the control block ** ** Returns void ** *******************************************************************************/ void HID_HostDeinit (void) { #if (HID_DYNAMIC_MEMORY) if (hidh_cb_ptr) { osi_free(hidh_cb_ptr); hidh_cb_ptr = NULL; } #endif /* #if (HID_DYNAMIC_MEMORY) */ } /******************************************************************************* ** ** Function HID_HostSetTraceLevel ** ** Description This function sets the trace level for HID Host. If called with ** a value of 0xFF, it simply reads the current trace level. ** ** Returns the new (current) trace level ** *******************************************************************************/ UINT8 HID_HostSetTraceLevel (UINT8 new_level) { if (new_level != 0xFF) { hh_cb.trace_level = new_level; } return (hh_cb.trace_level); } /******************************************************************************* ** ** Function HID_HostRegister ** ** Description This function registers HID-Host with lower layers ** ** Returns tHID_STATUS ** *******************************************************************************/ tHID_STATUS HID_HostRegister (tHID_HOST_DEV_CALLBACK *dev_cback) { tHID_STATUS st; if ( hh_cb.reg_flag ) { return HID_ERR_ALREADY_REGISTERED; } if ( dev_cback == NULL ) { return HID_ERR_INVALID_PARAM; } /* Register with L2CAP */ if ( (st = hidh_conn_reg()) != HID_SUCCESS ) { return st; } hh_cb.callback = dev_cback ; hh_cb.reg_flag = TRUE; return (HID_SUCCESS); } /******************************************************************************* ** ** Function HID_HostDeregister ** ** Description This function is called when the host is about power down. ** ** Returns tHID_STATUS ** *******************************************************************************/ tHID_STATUS HID_HostDeregister(void) { UINT8 i; if ( !hh_cb.reg_flag ) { return (HID_ERR_NOT_REGISTERED); } for ( i = 0; i < HID_HOST_MAX_DEVICES; i++ ) { HID_HostRemoveDev( i ) ; } hidh_conn_dereg(); hh_cb.reg_flag = FALSE; return (HID_SUCCESS) ; } /******************************************************************************* ** ** Function HID_HostAddDev ** ** Description This is called so HID-host may manage this device. ** ** Returns tHID_STATUS ** *******************************************************************************/ tHID_STATUS HID_HostAddDev ( BD_ADDR addr, UINT16 attr_mask, UINT8 *handle ) { int i; /* Find an entry for this device in hh_cb.devices array */ if ( !hh_cb.reg_flag ) { return (HID_ERR_NOT_REGISTERED); } for ( i = 0; i < HID_HOST_MAX_DEVICES; i++) { if ((hh_cb.devices[i].in_use) && (!memcmp(addr, hh_cb.devices[i].addr, BD_ADDR_LEN))) { break; } } if (i == HID_HOST_MAX_DEVICES ) { for ( i = 0; i < HID_HOST_MAX_DEVICES; i++) { if ( !hh_cb.devices[i].in_use) { break; } } } if ( i == HID_HOST_MAX_DEVICES ) { return HID_ERR_NO_RESOURCES; } if (!hh_cb.devices[i].in_use) { hh_cb.devices[i].in_use = TRUE; hh_cb.devices[i].delay_remove = FALSE; memcpy( hh_cb.devices[i].addr, addr, sizeof( BD_ADDR ) ) ; hh_cb.devices[i].state = HID_DEV_NO_CONN; hh_cb.devices[i].conn_tries = 0 ; } if (attr_mask != HID_ATTR_MASK_IGNORE) { hh_cb.devices[i].attr_mask = attr_mask; } *handle = i; return (HID_SUCCESS); } /******************************************************************************* ** ** Function HID_HostGetDev ** ** Description This is called so HID-host can find this device. ** ** Returns tHID_STATUS ** *******************************************************************************/ tHID_STATUS HID_HostGetDev(BD_ADDR addr, UINT8 *handle) { int i; /* Find an entry for this device in hh_cb.devices array */ if (!hh_cb.reg_flag) { return (HID_ERR_NOT_REGISTERED); } for (i = 0; i < HID_HOST_MAX_DEVICES; i++) { if ((hh_cb.devices[i].in_use) && (!memcmp(addr, hh_cb.devices[i].addr, BD_ADDR_LEN))) { break; } } if (i == HID_HOST_MAX_DEVICES) { *handle = 0xff; } else { *handle = i; } return (HID_SUCCESS); } /******************************************************************************* ** ** Function HID_HostRemoveDev ** ** Description This removes the device from list devices that host has to manage. ** ** Returns tHID_STATUS ** *******************************************************************************/ tHID_STATUS HID_HostRemoveDev ( UINT8 dev_handle ) { if ( !hh_cb.reg_flag ) { return (HID_ERR_NOT_REGISTERED); } if ( (dev_handle >= HID_HOST_MAX_DEVICES) || (!hh_cb.devices[dev_handle].in_use) ) { return HID_ERR_INVALID_PARAM; } HID_HostCloseDev( dev_handle ) ; if (hh_cb.devices[dev_handle].conn.conn_state == HID_CONN_STATE_DISCONNECTING_INTR || hh_cb.devices[dev_handle].conn.conn_state == HID_CONN_STATE_DISCONNECTING_CTRL) { // delay the remove action, to close the control and the interrupt channel hh_cb.devices[dev_handle].delay_remove = TRUE; } else { HIDH_TRACE_WARNING("%s dev_handle:%d conn_state:%d", __func__, dev_handle, hh_cb.devices[dev_handle].conn.conn_state); hh_cb.devices[dev_handle].in_use = FALSE; hh_cb.devices[dev_handle].conn.conn_state = HID_CONN_STATE_UNUSED; hh_cb.devices[dev_handle].conn.ctrl_cid = hh_cb.devices[dev_handle].conn.intr_cid = 0; hh_cb.devices[dev_handle].attr_mask = 0; } return HID_SUCCESS; } /******************************************************************************* ** ** Function HID_HostOpenDev ** ** Description This function is called when the user wants to initiate a ** connection attempt to a device. ** ** Returns void ** *******************************************************************************/ tHID_STATUS HID_HostOpenDev ( UINT8 dev_handle ) { if ( !hh_cb.reg_flag ) { return (HID_ERR_NOT_REGISTERED); } if ( (dev_handle >= HID_HOST_MAX_DEVICES) || (!hh_cb.devices[dev_handle].in_use) ) { return HID_ERR_INVALID_PARAM; } if ( hh_cb.devices[dev_handle].state != HID_DEV_NO_CONN ) { return HID_ERR_ALREADY_CONN; } hh_cb.devices[dev_handle].conn_tries = 1; return hidh_conn_initiate( dev_handle ); } /******************************************************************************* ** ** Function HID_HostWriteDev ** ** Description This function is called when the host has a report to send. ** ** report_id: is only used on GET_REPORT transaction if is specified. ** only valid when it's a non-zero value. ** ** Returns void ** *******************************************************************************/ tHID_STATUS HID_HostWriteDev( UINT8 dev_handle, UINT8 t_type, UINT8 param, UINT16 data, UINT8 report_id, BT_HDR *pbuf ) { tHID_STATUS status = HID_SUCCESS; if ( !hh_cb.reg_flag ) { HIDH_TRACE_ERROR("HID_ERR_NOT_REGISTERED"); status = HID_ERR_NOT_REGISTERED; } if ( (dev_handle >= HID_HOST_MAX_DEVICES) || (!hh_cb.devices[dev_handle].in_use) ) { HIDH_TRACE_ERROR("HID_ERR_INVALID_PARAM"); status = HID_ERR_INVALID_PARAM; } else if ( hh_cb.devices[dev_handle].state != HID_DEV_CONNECTED ) { HIDH_TRACE_ERROR("HID_ERR_NO_CONNECTION dev_handle %d", dev_handle); status = HID_ERR_NO_CONNECTION; } if (status != HID_SUCCESS) { if (pbuf) { osi_free ((void *)pbuf); } } else { status = hidh_conn_snd_data( dev_handle, t_type, param, data, report_id, pbuf ) ; } return status; } /******************************************************************************* ** ** Function HID_HostCloseDev ** ** Description This function disconnects the device. ** ** Returns void ** *******************************************************************************/ tHID_STATUS HID_HostCloseDev( UINT8 dev_handle ) { if ( !hh_cb.reg_flag ) { return (HID_ERR_NOT_REGISTERED); } if ( (dev_handle >= HID_HOST_MAX_DEVICES) || (!hh_cb.devices[dev_handle].in_use) ) { return HID_ERR_INVALID_PARAM; } hh_cb.devices[dev_handle].conn_tries = HID_HOST_MAX_CONN_RETRY + 1; btu_stop_timer( &(hh_cb.devices[dev_handle].conn.timer_entry) ) ; if ( hh_cb.devices[dev_handle].state != HID_DEV_CONNECTED ) { return HID_ERR_NO_CONNECTION; } hh_cb.devices[dev_handle].conn_tries = HID_HOST_MAX_CONN_RETRY + 1; return hidh_conn_disconnect( dev_handle ); } tHID_STATUS HID_HostSetSecurityLevel( char serv_name[], UINT8 sec_lvl ) { if (!BTM_SetSecurityLevel (FALSE, serv_name, BTM_SEC_SERVICE_HIDH_SEC_CTRL, sec_lvl, HID_PSM_CONTROL, BTM_SEC_PROTO_HID, HID_SEC_CHN)) { HIDH_TRACE_ERROR ("Security Registration 1 failed"); return (HID_ERR_NO_RESOURCES); } if (!BTM_SetSecurityLevel (TRUE, serv_name, BTM_SEC_SERVICE_HIDH_SEC_CTRL, sec_lvl, HID_PSM_CONTROL, BTM_SEC_PROTO_HID, HID_SEC_CHN)) { HIDH_TRACE_ERROR ("Security Registration 2 failed"); return (HID_ERR_NO_RESOURCES); } if (!BTM_SetSecurityLevel (FALSE, serv_name, BTM_SEC_SERVICE_HIDH_NOSEC_CTRL, BTM_SEC_NONE, HID_PSM_CONTROL, BTM_SEC_PROTO_HID, HID_NOSEC_CHN)) { HIDH_TRACE_ERROR ("Security Registration 3 failed"); return (HID_ERR_NO_RESOURCES); } if (!BTM_SetSecurityLevel (TRUE, serv_name, BTM_SEC_SERVICE_HIDH_NOSEC_CTRL, BTM_SEC_NONE, HID_PSM_CONTROL, BTM_SEC_PROTO_HID, HID_NOSEC_CHN)) { HIDH_TRACE_ERROR ("Security Registration 4 failed"); return (HID_ERR_NO_RESOURCES); } if (!BTM_SetSecurityLevel (TRUE, serv_name, BTM_SEC_SERVICE_HIDH_INTR, BTM_SEC_NONE, HID_PSM_INTERRUPT, BTM_SEC_PROTO_HID, 0)) { HIDH_TRACE_ERROR ("Security Registration 5 failed"); return (HID_ERR_NO_RESOURCES); } if (!BTM_SetSecurityLevel (FALSE, serv_name, BTM_SEC_SERVICE_HIDH_INTR, BTM_SEC_NONE, HID_PSM_INTERRUPT, BTM_SEC_PROTO_HID, 0)) { HIDH_TRACE_ERROR ("Security Registration 6 failed"); return (HID_ERR_NO_RESOURCES); } return ( HID_SUCCESS ); } /****************************************************************************** ** ** Function hid_known_hid_device ** ** Description check if this device is of type HID Device ** ** Returns TRUE if device is HID Device else FALSE ** *******************************************************************************/ BOOLEAN hid_known_hid_device (BD_ADDR bd_addr) { UINT8 i; tBTM_INQ_INFO *p_inq_info = BTM_InqDbRead(bd_addr); if ( !hh_cb.reg_flag ) { return FALSE; } /* First check for class of device , if Inq DB has information about this device*/ if (p_inq_info != NULL) { /* Check if remote major device class is of type BTM_COD_MAJOR_PERIPHERAL */ if ((p_inq_info->results.dev_class[1] & BTM_COD_MAJOR_CLASS_MASK) == BTM_COD_MAJOR_PERIPHERAL ) { HIDH_TRACE_DEBUG("hid_known_hid_device:dev found in InqDB & COD matches HID dev"); return TRUE; } } else { /* Look for this device in security device DB */ tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (bd_addr); if ((p_dev_rec != NULL) && ((p_dev_rec->dev_class[1] & BTM_COD_MAJOR_CLASS_MASK) == BTM_COD_MAJOR_PERIPHERAL )) { HIDH_TRACE_DEBUG("hid_known_hid_device:dev found in SecDevDB & COD matches HID dev"); return TRUE; } } /* Find an entry for this device in hh_cb.devices array */ for ( i = 0; i < HID_HOST_MAX_DEVICES; i++) { if ((hh_cb.devices[i].in_use) && (memcmp(bd_addr, hh_cb.devices[i].addr, BD_ADDR_LEN) == 0)) { return TRUE; } } /* Check if this device is marked as HID Device in IOP Dev */ HIDH_TRACE_DEBUG("hid_known_hid_device:remote is not HID device"); return FALSE; } BOOLEAN HID_HostConnectOrig(UINT8 dev_handle) { BOOLEAN ret = FALSE; do { if (!hh_cb.reg_flag) { break; } if ((dev_handle >= HID_HOST_MAX_DEVICES) || (!hh_cb.devices[dev_handle].in_use)) { break; } ret = hidh_conn_is_orig(dev_handle); } while (0); return ret; } #endif //HID_HOST_INCLUDED