1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 28 #include <sun_sas.h> 29 30 /* 31 * Frees the HBA Library. Must be called after all HBA library functions 32 * to free all resources 33 */ 34 HBA_STATUS Sun_sasFreeLibrary() { 35 HBA_STATUS status; 36 37 lock(&all_hbas_lock); 38 39 status = FreeHBA(global_hba_head); 40 41 /* re-initialize all global variables */ 42 global_hba_head = NULL; 43 hba_count = 0; 44 open_handle_index = 1; 45 unlock(&all_hbas_lock); 46 (void) mutex_destroy(&all_hbas_lock); 47 48 /* free sysevent handle. */ 49 if (gSysEventHandle != NULL) 50 sysevent_unbind_handle(gSysEventHandle); 51 52 /* Reset our load count so we can be reloaded now */ 53 loadCount = 0; 54 55 return (status); 56 } 57 58 /* 59 * Internal routine to free up hba_ptr's (and all sub-structures) 60 */ 61 HBA_STATUS FreeHBA(struct sun_sas_hba *hba) { 62 struct sun_sas_hba *hba_ptr = NULL; 63 struct sun_sas_hba *last_hba_ptr = NULL; 64 struct sun_sas_port *hba_port = NULL; 65 struct sun_sas_port *last_hba_port = NULL; 66 struct sun_sas_port *tgt_port = NULL; 67 struct sun_sas_port *last_tgt_port = NULL; 68 struct ScsiEntryList *scsi_info = NULL; 69 struct ScsiEntryList *last_scsi_info = NULL; 70 struct phy_info *phy_ptr = NULL; 71 struct phy_info *last_phy = NULL; 72 struct open_handle *open_handle = NULL; 73 struct open_handle *last_open_handle = NULL; 74 75 last_hba_ptr = NULL; 76 /* walk through global_hba_head list freeing each handle */ 77 for (hba_ptr = hba; 78 hba_ptr != NULL; 79 hba_ptr = hba_ptr->next) { 80 /* Free the nested structures (port and attached port) */ 81 hba_port = hba_ptr->first_port; 82 while (hba_port != NULL) { 83 /* Free discovered port structure list. */ 84 tgt_port = hba_port->first_attached_port; 85 while (tgt_port != NULL) { 86 /* Free target mapping data list first. */ 87 scsi_info = tgt_port->scsiInfo; 88 while (scsi_info != NULL) { 89 last_scsi_info = scsi_info; 90 scsi_info = scsi_info->next; 91 free(last_scsi_info); 92 } 93 last_tgt_port = tgt_port; 94 tgt_port = tgt_port->next; 95 free(last_tgt_port->port_attributes.\ 96 PortSpecificAttribute.SASPort); 97 free(last_tgt_port); 98 } 99 100 phy_ptr = hba_port->first_phy; 101 while (phy_ptr != NULL) { 102 last_phy = phy_ptr; 103 phy_ptr = phy_ptr->next; 104 free(last_phy); 105 } 106 107 last_hba_port = hba_port; 108 hba_port = hba_port->next; 109 free(last_hba_port->port_attributes.\ 110 PortSpecificAttribute.SASPort); 111 free(last_hba_port); 112 } 113 114 open_handle = hba_ptr->open_handles; 115 while (open_handle != NULL) { 116 last_open_handle = open_handle; 117 open_handle = open_handle->next; 118 free(last_open_handle); 119 } 120 /* Free up the top level HBA structure from the last spin */ 121 if (last_hba_ptr != NULL) { 122 free(last_hba_ptr); 123 } 124 last_hba_ptr = hba_ptr; 125 } 126 if (last_hba_ptr != NULL) { 127 free(last_hba_ptr); 128 } 129 130 return (HBA_STATUS_OK); 131 } 132