1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0 3 * 4 * This file is provided under a dual BSD/GPLv2 license. When using or 5 * redistributing this file, you may do so under either license. 6 * 7 * GPL LICENSE SUMMARY 8 * 9 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of version 2 of the GNU General Public License as 13 * published by the Free Software Foundation. 14 * 15 * This program is distributed in the hope that it will be useful, but 16 * WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18 * General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 23 * The full GNU General Public License is included in this distribution 24 * in the file called LICENSE.GPL. 25 * 26 * BSD LICENSE 27 * 28 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. 29 * All rights reserved. 30 * 31 * Redistribution and use in source and binary forms, with or without 32 * modification, are permitted provided that the following conditions 33 * are met: 34 * 35 * * Redistributions of source code must retain the above copyright 36 * notice, this list of conditions and the following disclaimer. 37 * * Redistributions in binary form must reproduce the above copyright 38 * notice, this list of conditions and the following disclaimer in 39 * the documentation and/or other materials provided with the 40 * distribution. 41 * 42 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 43 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 44 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 45 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 46 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 47 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 48 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 49 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 50 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 51 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 52 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 53 */ 54 /** 55 * @file 56 * 57 * @brief This field defines the SCU format of an unsolicited frame (UF). A 58 * UF is a frame received by the SCU for which there is no known 59 * corresponding task context (TC). 60 */ 61 62 #ifndef _SCU_UNSOLICITED_FRAME_H_ 63 #define _SCU_UNSOLICITED_FRAME_H_ 64 65 #ifdef __cplusplus 66 extern "C" { 67 #endif // __cplusplus 68 69 #include <dev/isci/scil/sci_types.h> 70 71 /** 72 * This constant defines the number of DWORDS found the unsolicited frame 73 * header data member. 74 */ 75 #define SCU_UNSOLICITED_FRAME_HEADER_DATA_DWORDS 15 76 77 /** 78 * @struct SCU_UNSOLICITED_FRAME_HEADER 79 * 80 * This structure delineates the format of an unsolicited frame header. 81 * The first DWORD are UF attributes defined by the silicon architecture. 82 * The data depicts actual header information received on the link. 83 */ 84 typedef struct SCU_UNSOLICITED_FRAME_HEADER 85 { 86 /** 87 * This field indicates if there is an Initiator Index Table entry with 88 * which this header is associated. 89 */ 90 U32 iit_exists : 1; 91 92 /** 93 * This field simply indicates the protocol type (i.e. SSP, STP, SMP). 94 */ 95 U32 protocol_type : 3; 96 97 /** 98 * This field indicates if the frame is an address frame (IAF or OAF) 99 * or if it is a information unit frame. 100 */ 101 U32 is_address_frame : 1; 102 103 /** 104 * This field simply indicates the connection rate at which the frame 105 * was received. 106 */ 107 U32 connection_rate : 4; 108 109 U32 reserved : 23; 110 111 /** 112 * This field represents the actual header data received on the link. 113 */ 114 U32 data[SCU_UNSOLICITED_FRAME_HEADER_DATA_DWORDS]; 115 116 } SCU_UNSOLICITED_FRAME_HEADER_T; 117 118 #ifdef __cplusplus 119 } 120 #endif // __cplusplus 121 122 #endif // _SCU_UNSOLICITED_FRAME_H_ 123