| /****************************************************************************** |
| * |
| * Copyright 2005-2012 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. |
| * |
| ******************************************************************************/ |
| #include <string.h> // memset |
| #include <cstring> |
| |
| #include "bt_target.h" // Must be first to define build configuration |
| #if (BTA_HH_INCLUDED == TRUE) |
| |
| #include "bt_trace.h" // Legacy trace logging |
| #include "bta/hh/bta_hh_int.h" |
| #include "btif/include/btif_storage.h" |
| #include "device/include/interop.h" |
| #include "osi/include/osi.h" |
| #include "stack/include/acl_api.h" |
| #include "stack/include/btm_client_interface.h" |
| #include "types/raw_address.h" |
| |
| /* if SSR max latency is not defined by remote device, set the default value |
| as half of the link supervision timeout */ |
| #define BTA_HH_GET_DEF_SSR_MAX_LAT(x) ((x) >> 1) |
| |
| /***************************************************************************** |
| * Constants |
| ****************************************************************************/ |
| |
| namespace { |
| |
| constexpr uint16_t kSsrMaxLatency = 18; /* slots * 0.625ms */ |
| |
| } // namespace |
| |
| /******************************************************************************* |
| * |
| * Function bta_hh_find_cb |
| * |
| * Description Find best available control block according to BD address. |
| * |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| uint8_t bta_hh_find_cb(const RawAddress& bda) { |
| uint8_t xx; |
| |
| /* See how many active devices there are. */ |
| for (xx = 0; xx < BTA_HH_MAX_DEVICE; xx++) { |
| /* check if any active/known devices is a match */ |
| if ((bda == bta_hh_cb.kdev[xx].addr && !bda.IsEmpty())) { |
| #if (BTA_HH_DEBUG == TRUE) |
| APPL_TRACE_DEBUG("found kdev_cb[%d] hid_handle = %d ", xx, |
| bta_hh_cb.kdev[xx].hid_handle) |
| #endif |
| return xx; |
| } |
| #if (BTA_HH_DEBUG == TRUE) |
| else |
| APPL_TRACE_DEBUG("in_use ? [%d] kdev[%d].hid_handle = %d state = [%d]", |
| bta_hh_cb.kdev[xx].in_use, xx, |
| bta_hh_cb.kdev[xx].hid_handle, bta_hh_cb.kdev[xx].state); |
| #endif |
| } |
| |
| /* if no active device match, find a spot for it */ |
| for (xx = 0; xx < BTA_HH_MAX_DEVICE; xx++) { |
| if (!bta_hh_cb.kdev[xx].in_use) { |
| bta_hh_cb.kdev[xx].addr = bda; |
| break; |
| } |
| } |
| /* If device list full, report BTA_HH_IDX_INVALID */ |
| #if (BTA_HH_DEBUG == TRUE) |
| APPL_TRACE_DEBUG("bta_hh_find_cb:: index = %d while max = %d", xx, |
| BTA_HH_MAX_DEVICE); |
| #endif |
| |
| if (xx == BTA_HH_MAX_DEVICE) xx = BTA_HH_IDX_INVALID; |
| |
| return xx; |
| } |
| |
| tBTA_HH_DEV_CB* bta_hh_get_cb(const RawAddress& bda) { |
| uint8_t idx = bta_hh_find_cb(bda); |
| if (idx == BTA_HH_IDX_INVALID) { |
| return nullptr; |
| } |
| return &bta_hh_cb.kdev[idx]; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function bta_hh_clean_up_kdev |
| * |
| * Description Clean up device control block when device is removed from |
| * manitainace list, and update control block index map. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| void bta_hh_clean_up_kdev(tBTA_HH_DEV_CB* p_cb) { |
| uint8_t index; |
| |
| if (p_cb->hid_handle != BTA_HH_INVALID_HANDLE) { |
| if (p_cb->is_le_device) |
| bta_hh_cb.le_cb_index[BTA_HH_GET_LE_CB_IDX(p_cb->hid_handle)] = |
| BTA_HH_IDX_INVALID; |
| else |
| bta_hh_cb.cb_index[p_cb->hid_handle] = BTA_HH_IDX_INVALID; |
| } |
| |
| /* reset device control block */ |
| index = p_cb->index; /* Preserve index for this control block */ |
| |
| /* Free buffer for report descriptor info */ |
| osi_free_and_reset((void**)&p_cb->dscp_info.descriptor.dsc_list); |
| |
| memset(p_cb, 0, sizeof(tBTA_HH_DEV_CB)); /* Reset control block */ |
| |
| p_cb->index = index; /* Restore index for this control block */ |
| p_cb->state = BTA_HH_IDLE_ST; |
| p_cb->hid_handle = BTA_HH_INVALID_HANDLE; |
| } |
| /******************************************************************************* |
| * |
| * Function bta_hh_update_di_info |
| * |
| * Description Maintain a known device list for BTA HH. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| void bta_hh_update_di_info(tBTA_HH_DEV_CB* p_cb, uint16_t vendor_id, |
| uint16_t product_id, uint16_t version, |
| uint8_t flag) |
| { |
| #if (BTA_HH_DEBUG == TRUE) |
| APPL_TRACE_DEBUG("vendor_id = 0x%2x product_id = 0x%2x version = 0x%2x", |
| vendor_id, product_id, version); |
| #endif |
| p_cb->dscp_info.vendor_id = vendor_id; |
| p_cb->dscp_info.product_id = product_id; |
| p_cb->dscp_info.version = version; |
| p_cb->dscp_info.flag = flag; |
| } |
| /******************************************************************************* |
| * |
| * Function bta_hh_add_device_to_list |
| * |
| * Description Maintain a known device list for BTA HH. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| void bta_hh_add_device_to_list(tBTA_HH_DEV_CB* p_cb, uint8_t handle, |
| uint16_t attr_mask, |
| const tHID_DEV_DSCP_INFO* p_dscp_info, |
| uint8_t sub_class, uint16_t ssr_max_latency, |
| uint16_t ssr_min_tout, uint8_t app_id) { |
| #if (BTA_HH_DEBUG == TRUE) |
| APPL_TRACE_DEBUG("subclass = 0x%2x", sub_class); |
| #endif |
| |
| p_cb->hid_handle = handle; |
| p_cb->in_use = true; |
| p_cb->attr_mask = attr_mask; |
| |
| p_cb->sub_class = sub_class; |
| p_cb->app_id = app_id; |
| |
| p_cb->dscp_info.ssr_max_latency = ssr_max_latency; |
| p_cb->dscp_info.ssr_min_tout = ssr_min_tout; |
| |
| /* store report descriptor info */ |
| if (p_dscp_info) { |
| osi_free_and_reset((void**)&p_cb->dscp_info.descriptor.dsc_list); |
| |
| if (p_dscp_info->dl_len) { |
| p_cb->dscp_info.descriptor.dsc_list = |
| (uint8_t*)osi_malloc(p_dscp_info->dl_len); |
| p_cb->dscp_info.descriptor.dl_len = p_dscp_info->dl_len; |
| memcpy(p_cb->dscp_info.descriptor.dsc_list, p_dscp_info->dsc_list, |
| p_dscp_info->dl_len); |
| } |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * Function bta_hh_tod_spt |
| * |
| * Description Check to see if this type of device is supported |
| * |
| * Returns |
| * |
| ******************************************************************************/ |
| bool bta_hh_tod_spt(tBTA_HH_DEV_CB* p_cb, uint8_t sub_class) { |
| uint8_t xx; |
| uint8_t cod = (sub_class >> 2); /* lower two bits are reserved */ |
| |
| for (xx = 0; xx < p_bta_hh_cfg->max_devt_spt; xx++) { |
| if (cod == (uint8_t)p_bta_hh_cfg->p_devt_list[xx].tod) { |
| p_cb->app_id = p_bta_hh_cfg->p_devt_list[xx].app_id; |
| #if (BTA_HH_DEBUG == TRUE) |
| APPL_TRACE_EVENT("bta_hh_tod_spt sub_class:0x%x supported", sub_class); |
| #endif |
| return true; |
| } |
| } |
| #if (BTA_HH_DEBUG == TRUE) |
| APPL_TRACE_EVENT("bta_hh_tod_spt sub_class:0x%x NOT supported", sub_class); |
| #endif |
| return false; |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * Function bta_hh_read_ssr_param |
| * |
| * Description Read the SSR Parameter for the remote device |
| * |
| * Returns tBTA_HH_STATUS operation status |
| * |
| ******************************************************************************/ |
| tBTA_HH_STATUS bta_hh_read_ssr_param(const RawAddress& bd_addr, |
| uint16_t* p_max_ssr_lat, |
| uint16_t* p_min_ssr_tout) { |
| tBTA_HH_DEV_CB* p_cb = bta_hh_get_cb(bd_addr); |
| if (p_cb == nullptr) { |
| LOG_WARN("Unable to find device:%s", PRIVATE_ADDRESS(bd_addr)); |
| return BTA_HH_ERR; |
| } |
| |
| /* if remote device does not have HIDSSRHostMaxLatency attribute in SDP, |
| set SSR max latency default value here. */ |
| if (p_cb->dscp_info.ssr_max_latency == HID_SSR_PARAM_INVALID) { |
| /* The default is calculated as half of link supervision timeout.*/ |
| |
| uint16_t ssr_max_latency; |
| if (get_btm_client_interface().link_controller.BTM_GetLinkSuperTout( |
| p_cb->addr, &ssr_max_latency) != BTM_SUCCESS) { |
| LOG_WARN("Unable to get supervision timeout for peer:%s", |
| PRIVATE_ADDRESS(p_cb->addr)); |
| return BTA_HH_ERR; |
| } |
| ssr_max_latency = BTA_HH_GET_DEF_SSR_MAX_LAT(ssr_max_latency); |
| |
| /* per 1.1 spec, if the newly calculated max latency is greater than |
| BTA_HH_SSR_MAX_LATENCY_DEF which is 500ms, use |
| BTA_HH_SSR_MAX_LATENCY_DEF */ |
| if (ssr_max_latency > BTA_HH_SSR_MAX_LATENCY_DEF) |
| ssr_max_latency = BTA_HH_SSR_MAX_LATENCY_DEF; |
| |
| char remote_name[BTM_MAX_REM_BD_NAME_LEN] = ""; |
| if (btif_storage_get_stored_remote_name(bd_addr, remote_name)) { |
| if (interop_match_name(INTEROP_HID_HOST_LIMIT_SNIFF_INTERVAL, |
| remote_name)) { |
| if (ssr_max_latency > kSsrMaxLatency /* slots * 0.625ms */) { |
| ssr_max_latency = kSsrMaxLatency; |
| } |
| } |
| } |
| |
| *p_max_ssr_lat = ssr_max_latency; |
| } else |
| *p_max_ssr_lat = p_cb->dscp_info.ssr_max_latency; |
| |
| if (p_cb->dscp_info.ssr_min_tout == HID_SSR_PARAM_INVALID) |
| *p_min_ssr_tout = BTA_HH_SSR_MIN_TOUT_DEF; |
| else |
| *p_min_ssr_tout = p_cb->dscp_info.ssr_min_tout; |
| |
| return BTA_HH_OK; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function bta_hh_cleanup_disable |
| * |
| * Description when disable finished, cleanup control block and send |
| * callback |
| * |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| void bta_hh_cleanup_disable(tBTA_HH_STATUS status) { |
| uint8_t xx; |
| /* free buffer in CB holding report descriptors */ |
| for (xx = 0; xx < BTA_HH_MAX_DEVICE; xx++) { |
| osi_free_and_reset( |
| (void**)&bta_hh_cb.kdev[xx].dscp_info.descriptor.dsc_list); |
| } |
| |
| if (bta_hh_cb.p_disc_db) { |
| /* Cancel SDP if it had been started. */ |
| (void)SDP_CancelServiceSearch (bta_hh_cb.p_disc_db); |
| osi_free_and_reset((void**)&bta_hh_cb.p_disc_db); |
| } |
| |
| if (bta_hh_cb.p_cback) { |
| tBTA_HH bta_hh; |
| bta_hh.status = status; |
| (*bta_hh_cb.p_cback)(BTA_HH_DISABLE_EVT, &bta_hh); |
| /* all connections are down, no waiting for diconnect */ |
| memset(&bta_hh_cb, 0, sizeof(tBTA_HH_CB)); |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * Function bta_hh_dev_handle_to_cb_idx |
| * |
| * Description convert a HID device handle to the device control block |
| * index. |
| * |
| * |
| * Returns uint8_t: index of the device control block. |
| * |
| ******************************************************************************/ |
| uint8_t bta_hh_dev_handle_to_cb_idx(uint8_t dev_handle) { |
| uint8_t index = BTA_HH_IDX_INVALID; |
| |
| if (BTA_HH_IS_LE_DEV_HDL(dev_handle)) { |
| if (BTA_HH_IS_LE_DEV_HDL_VALID(dev_handle)) |
| index = bta_hh_cb.le_cb_index[BTA_HH_GET_LE_CB_IDX(dev_handle)]; |
| #if (BTA_HH_DEBUG == TRUE) |
| APPL_TRACE_DEBUG("bta_hh_dev_handle_to_cb_idx dev_handle = %d index = %d", |
| dev_handle, index); |
| #endif |
| } else |
| /* regular HID device checking */ |
| if (dev_handle < BTA_HH_MAX_KNOWN) |
| index = bta_hh_cb.cb_index[dev_handle]; |
| |
| return index; |
| } |
| #if (BTA_HH_DEBUG == TRUE) |
| /******************************************************************************* |
| * |
| * Function bta_hh_trace_dev_db |
| * |
| * Description Check to see if this type of device is supported |
| * |
| * Returns |
| * |
| ******************************************************************************/ |
| void bta_hh_trace_dev_db(void) { |
| uint8_t xx; |
| |
| APPL_TRACE_DEBUG("bta_hh_trace_dev_db:: Device DB list********************"); |
| |
| for (xx = 0; xx < BTA_HH_MAX_DEVICE; xx++) { |
| APPL_TRACE_DEBUG("kdev[%d] in_use[%d] handle[%d] ", xx, |
| bta_hh_cb.kdev[xx].in_use, bta_hh_cb.kdev[xx].hid_handle); |
| |
| APPL_TRACE_DEBUG( |
| "\t\t\t attr_mask[%04x] state [%d] sub_class[%02x] index = %d", |
| bta_hh_cb.kdev[xx].attr_mask, bta_hh_cb.kdev[xx].state, |
| bta_hh_cb.kdev[xx].sub_class, bta_hh_cb.kdev[xx].index); |
| } |
| APPL_TRACE_DEBUG("*********************************************************"); |
| } |
| #endif |
| #endif /* HL_INCLUDED */ |