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380 lines
12 KiB
380 lines
12 KiB
/******************************************************************************
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*
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* Copyright 2005-2012 Broadcom Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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#include <string.h> // memset
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#include <cstring>
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#include "bt_target.h" // Must be first to define build configuration
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#if (BTA_HH_INCLUDED == TRUE)
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#include "bt_trace.h" // Legacy trace logging
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#include "bta/hh/bta_hh_int.h"
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#include "btif/include/btif_storage.h"
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#include "device/include/interop.h"
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#include "osi/include/osi.h"
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#include "stack/include/acl_api.h"
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#include "stack/include/btm_client_interface.h"
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#include "types/raw_address.h"
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/* if SSR max latency is not defined by remote device, set the default value
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as half of the link supervision timeout */
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#define BTA_HH_GET_DEF_SSR_MAX_LAT(x) ((x) >> 1)
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/*****************************************************************************
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* Constants
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****************************************************************************/
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namespace {
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constexpr uint16_t kSsrMaxLatency = 18; /* slots * 0.625ms */
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} // namespace
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/*******************************************************************************
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*
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* Function bta_hh_find_cb
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*
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* Description Find best available control block according to BD address.
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*
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*
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* Returns void
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*
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******************************************************************************/
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uint8_t bta_hh_find_cb(const RawAddress& bda) {
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uint8_t xx;
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/* See how many active devices there are. */
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for (xx = 0; xx < BTA_HH_MAX_DEVICE; xx++) {
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/* check if any active/known devices is a match */
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if ((bda == bta_hh_cb.kdev[xx].addr && !bda.IsEmpty())) {
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#if (BTA_HH_DEBUG == TRUE)
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APPL_TRACE_DEBUG("found kdev_cb[%d] hid_handle = %d ", xx,
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bta_hh_cb.kdev[xx].hid_handle)
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#endif
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return xx;
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}
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#if (BTA_HH_DEBUG == TRUE)
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else
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APPL_TRACE_DEBUG("in_use ? [%d] kdev[%d].hid_handle = %d state = [%d]",
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bta_hh_cb.kdev[xx].in_use, xx,
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bta_hh_cb.kdev[xx].hid_handle, bta_hh_cb.kdev[xx].state);
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#endif
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}
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/* if no active device match, find a spot for it */
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for (xx = 0; xx < BTA_HH_MAX_DEVICE; xx++) {
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if (!bta_hh_cb.kdev[xx].in_use) {
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bta_hh_cb.kdev[xx].addr = bda;
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break;
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}
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}
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/* If device list full, report BTA_HH_IDX_INVALID */
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#if (BTA_HH_DEBUG == TRUE)
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APPL_TRACE_DEBUG("bta_hh_find_cb:: index = %d while max = %d", xx,
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BTA_HH_MAX_DEVICE);
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#endif
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if (xx == BTA_HH_MAX_DEVICE) xx = BTA_HH_IDX_INVALID;
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return xx;
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}
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tBTA_HH_DEV_CB* bta_hh_get_cb(const RawAddress& bda) {
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uint8_t idx = bta_hh_find_cb(bda);
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if (idx == BTA_HH_IDX_INVALID) {
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return nullptr;
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}
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return &bta_hh_cb.kdev[idx];
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}
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/*******************************************************************************
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*
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* Function bta_hh_clean_up_kdev
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*
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* Description Clean up device control block when device is removed from
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* manitainace list, and update control block index map.
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*
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* Returns void
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*
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******************************************************************************/
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void bta_hh_clean_up_kdev(tBTA_HH_DEV_CB* p_cb) {
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uint8_t index;
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if (p_cb->hid_handle != BTA_HH_INVALID_HANDLE) {
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if (p_cb->is_le_device)
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bta_hh_cb.le_cb_index[BTA_HH_GET_LE_CB_IDX(p_cb->hid_handle)] =
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BTA_HH_IDX_INVALID;
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else
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bta_hh_cb.cb_index[p_cb->hid_handle] = BTA_HH_IDX_INVALID;
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}
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/* reset device control block */
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index = p_cb->index; /* Preserve index for this control block */
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/* Free buffer for report descriptor info */
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osi_free_and_reset((void**)&p_cb->dscp_info.descriptor.dsc_list);
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memset(p_cb, 0, sizeof(tBTA_HH_DEV_CB)); /* Reset control block */
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p_cb->index = index; /* Restore index for this control block */
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p_cb->state = BTA_HH_IDLE_ST;
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p_cb->hid_handle = BTA_HH_INVALID_HANDLE;
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}
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/*******************************************************************************
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*
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* Function bta_hh_update_di_info
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*
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* Description Maintain a known device list for BTA HH.
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*
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* Returns void
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*
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******************************************************************************/
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void bta_hh_update_di_info(tBTA_HH_DEV_CB* p_cb, uint16_t vendor_id,
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uint16_t product_id, uint16_t version,
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uint8_t flag)
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{
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#if (BTA_HH_DEBUG == TRUE)
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APPL_TRACE_DEBUG("vendor_id = 0x%2x product_id = 0x%2x version = 0x%2x",
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vendor_id, product_id, version);
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#endif
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p_cb->dscp_info.vendor_id = vendor_id;
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p_cb->dscp_info.product_id = product_id;
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p_cb->dscp_info.version = version;
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p_cb->dscp_info.flag = flag;
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}
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/*******************************************************************************
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*
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* Function bta_hh_add_device_to_list
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*
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* Description Maintain a known device list for BTA HH.
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*
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* Returns void
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*
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******************************************************************************/
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void bta_hh_add_device_to_list(tBTA_HH_DEV_CB* p_cb, uint8_t handle,
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uint16_t attr_mask,
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const tHID_DEV_DSCP_INFO* p_dscp_info,
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uint8_t sub_class, uint16_t ssr_max_latency,
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uint16_t ssr_min_tout, uint8_t app_id) {
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#if (BTA_HH_DEBUG == TRUE)
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APPL_TRACE_DEBUG("subclass = 0x%2x", sub_class);
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#endif
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p_cb->hid_handle = handle;
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p_cb->in_use = true;
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p_cb->attr_mask = attr_mask;
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p_cb->sub_class = sub_class;
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p_cb->app_id = app_id;
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p_cb->dscp_info.ssr_max_latency = ssr_max_latency;
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p_cb->dscp_info.ssr_min_tout = ssr_min_tout;
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/* store report descriptor info */
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if (p_dscp_info) {
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osi_free_and_reset((void**)&p_cb->dscp_info.descriptor.dsc_list);
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if (p_dscp_info->dl_len) {
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p_cb->dscp_info.descriptor.dsc_list =
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(uint8_t*)osi_malloc(p_dscp_info->dl_len);
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p_cb->dscp_info.descriptor.dl_len = p_dscp_info->dl_len;
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memcpy(p_cb->dscp_info.descriptor.dsc_list, p_dscp_info->dsc_list,
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p_dscp_info->dl_len);
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}
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}
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}
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/*******************************************************************************
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*
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* Function bta_hh_tod_spt
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*
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* Description Check to see if this type of device is supported
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*
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* Returns
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*
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******************************************************************************/
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bool bta_hh_tod_spt(tBTA_HH_DEV_CB* p_cb, uint8_t sub_class) {
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uint8_t xx;
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uint8_t cod = (sub_class >> 2); /* lower two bits are reserved */
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for (xx = 0; xx < p_bta_hh_cfg->max_devt_spt; xx++) {
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if (cod == (uint8_t)p_bta_hh_cfg->p_devt_list[xx].tod) {
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p_cb->app_id = p_bta_hh_cfg->p_devt_list[xx].app_id;
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#if (BTA_HH_DEBUG == TRUE)
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APPL_TRACE_EVENT("bta_hh_tod_spt sub_class:0x%x supported", sub_class);
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#endif
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return true;
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}
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}
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#if (BTA_HH_DEBUG == TRUE)
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APPL_TRACE_EVENT("bta_hh_tod_spt sub_class:0x%x NOT supported", sub_class);
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#endif
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return false;
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}
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/*******************************************************************************
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*
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* Function bta_hh_read_ssr_param
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*
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* Description Read the SSR Parameter for the remote device
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*
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* Returns tBTA_HH_STATUS operation status
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*
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******************************************************************************/
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tBTA_HH_STATUS bta_hh_read_ssr_param(const RawAddress& bd_addr,
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uint16_t* p_max_ssr_lat,
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uint16_t* p_min_ssr_tout) {
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tBTA_HH_DEV_CB* p_cb = bta_hh_get_cb(bd_addr);
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if (p_cb == nullptr) {
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LOG_WARN("Unable to find device:%s", PRIVATE_ADDRESS(bd_addr));
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return BTA_HH_ERR;
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}
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/* if remote device does not have HIDSSRHostMaxLatency attribute in SDP,
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set SSR max latency default value here. */
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if (p_cb->dscp_info.ssr_max_latency == HID_SSR_PARAM_INVALID) {
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/* The default is calculated as half of link supervision timeout.*/
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uint16_t ssr_max_latency;
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if (get_btm_client_interface().link_controller.BTM_GetLinkSuperTout(
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p_cb->addr, &ssr_max_latency) != BTM_SUCCESS) {
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LOG_WARN("Unable to get supervision timeout for peer:%s",
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PRIVATE_ADDRESS(p_cb->addr));
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return BTA_HH_ERR;
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}
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ssr_max_latency = BTA_HH_GET_DEF_SSR_MAX_LAT(ssr_max_latency);
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/* per 1.1 spec, if the newly calculated max latency is greater than
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BTA_HH_SSR_MAX_LATENCY_DEF which is 500ms, use
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BTA_HH_SSR_MAX_LATENCY_DEF */
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if (ssr_max_latency > BTA_HH_SSR_MAX_LATENCY_DEF)
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ssr_max_latency = BTA_HH_SSR_MAX_LATENCY_DEF;
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char remote_name[BTM_MAX_REM_BD_NAME_LEN] = "";
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if (btif_storage_get_stored_remote_name(bd_addr, remote_name)) {
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if (interop_match_name(INTEROP_HID_HOST_LIMIT_SNIFF_INTERVAL,
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remote_name)) {
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if (ssr_max_latency > kSsrMaxLatency /* slots * 0.625ms */) {
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ssr_max_latency = kSsrMaxLatency;
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}
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}
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}
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*p_max_ssr_lat = ssr_max_latency;
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} else
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*p_max_ssr_lat = p_cb->dscp_info.ssr_max_latency;
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if (p_cb->dscp_info.ssr_min_tout == HID_SSR_PARAM_INVALID)
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*p_min_ssr_tout = BTA_HH_SSR_MIN_TOUT_DEF;
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else
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*p_min_ssr_tout = p_cb->dscp_info.ssr_min_tout;
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return BTA_HH_OK;
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}
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/*******************************************************************************
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*
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* Function bta_hh_cleanup_disable
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*
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* Description when disable finished, cleanup control block and send
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* callback
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*
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*
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* Returns void
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*
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******************************************************************************/
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void bta_hh_cleanup_disable(tBTA_HH_STATUS status) {
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uint8_t xx;
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/* free buffer in CB holding report descriptors */
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for (xx = 0; xx < BTA_HH_MAX_DEVICE; xx++) {
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osi_free_and_reset(
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(void**)&bta_hh_cb.kdev[xx].dscp_info.descriptor.dsc_list);
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}
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if (bta_hh_cb.p_disc_db) {
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/* Cancel SDP if it had been started. */
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(void)SDP_CancelServiceSearch (bta_hh_cb.p_disc_db);
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osi_free_and_reset((void**)&bta_hh_cb.p_disc_db);
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}
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if (bta_hh_cb.p_cback) {
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tBTA_HH bta_hh;
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bta_hh.status = status;
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(*bta_hh_cb.p_cback)(BTA_HH_DISABLE_EVT, &bta_hh);
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/* all connections are down, no waiting for diconnect */
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memset(&bta_hh_cb, 0, sizeof(tBTA_HH_CB));
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}
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}
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/*******************************************************************************
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*
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* Function bta_hh_dev_handle_to_cb_idx
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*
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* Description convert a HID device handle to the device control block
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* index.
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*
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*
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* Returns uint8_t: index of the device control block.
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*
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******************************************************************************/
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uint8_t bta_hh_dev_handle_to_cb_idx(uint8_t dev_handle) {
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uint8_t index = BTA_HH_IDX_INVALID;
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if (BTA_HH_IS_LE_DEV_HDL(dev_handle)) {
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if (BTA_HH_IS_LE_DEV_HDL_VALID(dev_handle))
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index = bta_hh_cb.le_cb_index[BTA_HH_GET_LE_CB_IDX(dev_handle)];
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#if (BTA_HH_DEBUG == TRUE)
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APPL_TRACE_DEBUG("bta_hh_dev_handle_to_cb_idx dev_handle = %d index = %d",
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dev_handle, index);
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#endif
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} else
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/* regular HID device checking */
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if (dev_handle < BTA_HH_MAX_KNOWN)
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index = bta_hh_cb.cb_index[dev_handle];
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return index;
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}
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#if (BTA_HH_DEBUG == TRUE)
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/*******************************************************************************
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*
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* Function bta_hh_trace_dev_db
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*
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* Description Check to see if this type of device is supported
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*
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* Returns
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*
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******************************************************************************/
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void bta_hh_trace_dev_db(void) {
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uint8_t xx;
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APPL_TRACE_DEBUG("bta_hh_trace_dev_db:: Device DB list********************");
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for (xx = 0; xx < BTA_HH_MAX_DEVICE; xx++) {
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APPL_TRACE_DEBUG("kdev[%d] in_use[%d] handle[%d] ", xx,
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bta_hh_cb.kdev[xx].in_use, bta_hh_cb.kdev[xx].hid_handle);
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APPL_TRACE_DEBUG(
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"\t\t\t attr_mask[%04x] state [%d] sub_class[%02x] index = %d",
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bta_hh_cb.kdev[xx].attr_mask, bta_hh_cb.kdev[xx].state,
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bta_hh_cb.kdev[xx].sub_class, bta_hh_cb.kdev[xx].index);
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}
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APPL_TRACE_DEBUG("*********************************************************");
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}
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#endif
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#endif /* HL_INCLUDED */
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