1 /* 2 * Copyright 2021 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 19 #include "stack/include/hcidefs.h" 20 21 #define BD_FEATURES_LEN 8 22 typedef uint8_t 23 BD_FEATURES[BD_FEATURES_LEN]; /* LMP features supported by device */ 24 25 // Bit order [0]:0-7 [1]:8-15 ... [7]:56-63 bd_features_text(const BD_FEATURES & features)26inline std::string bd_features_text(const BD_FEATURES& features) { 27 uint8_t len = BD_FEATURES_LEN; 28 char buf[255]; 29 char* pbuf = buf; 30 const uint8_t* b = features; 31 while (len--) { 32 pbuf += sprintf(pbuf, "0x%02x ", *b++); 33 } 34 return std::string(buf); 35 } 36 37 /** 38 * Create a bitmask of packet types from the remote feature 39 */ 40 class PeerPacketTypes { 41 public: 42 struct { 43 uint16_t supported{0}; 44 uint16_t unsupported{0}; 45 } acl{.supported = (HCI_PKT_TYPES_MASK_DM1 | HCI_PKT_TYPES_MASK_DH1)}, sco{}; 46 PeerPacketTypes(const BD_FEATURES & features)47 PeerPacketTypes(const BD_FEATURES& features) { 48 /* 3 and 5 slot packets? */ 49 if (HCI_3_SLOT_PACKETS_SUPPORTED(features)) 50 acl.supported |= (HCI_PKT_TYPES_MASK_DH3 | HCI_PKT_TYPES_MASK_DM3); 51 52 if (HCI_5_SLOT_PACKETS_SUPPORTED(features)) 53 acl.supported |= HCI_PKT_TYPES_MASK_DH5 | HCI_PKT_TYPES_MASK_DM5; 54 55 /* 2 and 3 MPS support? */ 56 if (!HCI_EDR_ACL_2MPS_SUPPORTED(features)) 57 /* Not supported. Add 'not_supported' mask for all 2MPS packet types */ 58 acl.unsupported |= 59 (HCI_PKT_TYPES_MASK_NO_2_DH1 | HCI_PKT_TYPES_MASK_NO_2_DH3 | 60 HCI_PKT_TYPES_MASK_NO_2_DH5); 61 62 if (!HCI_EDR_ACL_3MPS_SUPPORTED(features)) 63 /* Not supported. Add 'not_supported' mask for all 3MPS packet types */ 64 acl.unsupported |= 65 (HCI_PKT_TYPES_MASK_NO_3_DH1 | HCI_PKT_TYPES_MASK_NO_3_DH3 | 66 HCI_PKT_TYPES_MASK_NO_3_DH5); 67 68 /* EDR 3 and 5 slot support? */ 69 if (HCI_EDR_ACL_2MPS_SUPPORTED(features) || 70 HCI_EDR_ACL_3MPS_SUPPORTED(features)) { 71 if (!HCI_3_SLOT_EDR_ACL_SUPPORTED(features)) 72 /* Not supported. Add 'not_supported' mask for all 3-slot EDR packet 73 * types 74 */ 75 acl.unsupported |= 76 (HCI_PKT_TYPES_MASK_NO_2_DH3 | HCI_PKT_TYPES_MASK_NO_3_DH3); 77 78 if (!HCI_5_SLOT_EDR_ACL_SUPPORTED(features)) 79 /* Not supported. Add 'not_supported' mask for all 5-slot EDR packet 80 * types 81 */ 82 acl.unsupported |= 83 (HCI_PKT_TYPES_MASK_NO_2_DH5 | HCI_PKT_TYPES_MASK_NO_3_DH5); 84 } 85 } 86 }; 87