1 /*- 2 * This file is provided under a dual BSD/GPLv2 license. When using or 3 * redistributing this file, you may do so under either license. 4 * 5 * GPL LICENSE SUMMARY 6 * 7 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of version 2 of the GNU General Public License as 11 * published by the Free Software Foundation. 12 * 13 * This program is distributed in the hope that it will be useful, but 14 * WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 21 * The full GNU General Public License is included in this distribution 22 * in the file called LICENSE.GPL. 23 * 24 * BSD LICENSE 25 * 26 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. 27 * All rights reserved. 28 * 29 * Redistribution and use in source and binary forms, with or without 30 * modification, are permitted provided that the following conditions 31 * are met: 32 * 33 * * Redistributions of source code must retain the above copyright 34 * notice, this list of conditions and the following disclaimer. 35 * * Redistributions in binary form must reproduce the above copyright 36 * notice, this list of conditions and the following disclaimer in 37 * the documentation and/or other materials provided with the 38 * distribution. 39 * 40 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 41 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 42 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 43 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 44 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 46 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 47 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 48 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 49 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 50 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 51 * 52 * $FreeBSD$ 53 */ 54 #ifndef _SCI_BASE_LIBRARY_H_ 55 #define _SCI_BASE_LIBRARY_H_ 56 57 /** 58 * @file 59 * 60 * @brief This file contains the protected interface structures, constants 61 * and interface methods for the SCI_BASE_LIBRARY object. 62 * 63 */ 64 65 #ifdef __cplusplus 66 extern "C" { 67 #endif // __cplusplus 68 69 #include <dev/isci/scil/sci_library.h> 70 #include <dev/isci/scil/sci_pool.h> 71 #include <dev/isci/scil/sci_base_object.h> 72 #include <dev/isci/scil/sci_base_logger.h> 73 #include <dev/isci/scil/sci_controller_constants.h> 74 75 /** 76 * @struct SCI_BASE_LIBRARY 77 * 78 * @brief This structure contains all of the objects common to all library 79 * sub-objects. 80 */ 81 typedef struct SCI_BASE_LIBRARY 82 { 83 /** 84 * This class derives directly from the base object class. As a result, 85 * the field is named "parent" and is the first field contained in the 86 * structure. 87 */ 88 SCI_BASE_OBJECT_T parent; 89 90 /** 91 * This field provides the logger object to be utilized by all objects 92 * contained inside of a library. 93 */ 94 SCI_BASE_LOGGER_T logger; 95 96 // Create a pool structure to manage free controller indices. 97 SCI_POOL_CREATE(controller_id_pool, U16, SCI_MAX_CONTROLLERS); 98 99 } SCI_BASE_LIBRARY_T; 100 101 102 /** 103 * @brief This method will construct the base library object. 104 * 105 * @param[in] this_library This parameter specifies the library object 106 * to be constructed. 107 * @param[in] max_controllers This parameter specifies the maximum number 108 * of controllers to be supported by this library. 109 * 110 * @return none 111 */ 112 void sci_base_library_construct( 113 SCI_BASE_LIBRARY_T * this_library, 114 U32 max_controllers 115 ); 116 117 /** 118 * This macro provides common code for allocating a controller from a library. 119 * It will ensure that we successfully allocate an available controller index 120 * and return SCI_FAILURE_INSUFFICIENT_RESOURCES if unsuccessful. 121 */ 122 #define SCI_BASE_LIBRARY_ALLOCATE_CONTROLLER( \ 123 library, \ 124 controller_ptr, \ 125 rc \ 126 ) \ 127 { \ 128 U16 index; \ 129 *rc = SCI_SUCCESS; \ 130 if (! sci_pool_empty((library)->parent.controller_id_pool)) \ 131 { \ 132 sci_pool_get((library)->parent.controller_id_pool, index); \ 133 *controller_ptr = (SCI_CONTROLLER_HANDLE_T) \ 134 & (library)->controllers[index]; \ 135 } \ 136 else \ 137 *rc = SCI_FAILURE_INSUFFICIENT_RESOURCES; \ 138 } 139 140 /** 141 * This macro provides common code for freeing a controller to a library. 142 * It calculates the index to the controller instance in the array by 143 * determining the offset. 144 */ 145 #define SCI_BASE_LIBRARY_FREE_CONTROLLER( \ 146 library, \ 147 controller, \ 148 CONTROLLER_TYPE, \ 149 rc \ 150 ) \ 151 { \ 152 U16 index = (U16) \ 153 ((((char *)(controller)) - ((char *)(library)->controllers))\ 154 / sizeof(CONTROLLER_TYPE)); \ 155 *rc = SCI_SUCCESS; \ 156 if ( (index < SCI_MAX_CONTROLLERS) \ 157 && (! sci_pool_full((library)->parent.controller_id_pool)) ) \ 158 { \ 159 sci_pool_put((library)->parent.controller_id_pool, index); \ 160 } \ 161 else \ 162 *rc = SCI_FAILURE_CONTROLLER_NOT_FOUND; \ 163 } 164 165 166 167 /** 168 * This macro provides common code for constructing library. It 169 * It initialize and fill the library's controller_id_pool. 170 */ 171 #define SCI_BASE_LIBRARY_CONSTRUCT( \ 172 library, \ 173 base_library, \ 174 max_controllers, \ 175 CONTROLLER_TYPE, \ 176 status \ 177 ) \ 178 { \ 179 U32 controller_index; \ 180 sci_base_object_construct(&(base_library)->parent, &(base_library)->logger); \ 181 sci_pool_initialize((base_library)->controller_id_pool); \ 182 for (controller_index = 0; controller_index < max_controller_count; controller_index++) \ 183 { \ 184 SCI_BASE_LIBRARY_FREE_CONTROLLER( \ 185 library, \ 186 &library->controllers[controller_index], \ 187 CONTROLLER_TYPE, \ 188 &status \ 189 ); \ 190 } \ 191 } 192 193 #ifdef __cplusplus 194 } 195 #endif // __cplusplus 196 197 #endif // _SCI_BASE_LIBRARY_H_ 198