1 /*- 2 * BSD LICENSE 3 * 4 * Copyright (C) 2008-2012 Daisuke Aoyama <aoyama@peach.ne.jp>. 5 * Copyright (c) Intel Corporation. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * * Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * * Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in 16 * the documentation and/or other materials provided with the 17 * distribution. 18 * * Neither the name of Intel Corporation nor the names of its 19 * contributors may be used to endorse or promote products derived 20 * from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 25 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 26 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 28 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 32 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #include "scsi_internal.h" 36 37 struct spdk_scsi_globals g_scsi; 38 39 int 40 spdk_scsi_init(void) 41 { 42 int rc; 43 44 rc = pthread_mutex_init(&g_scsi.mutex, NULL); 45 if (rc != 0) { 46 SPDK_ERRLOG("mutex_init() failed\n"); 47 return -1; 48 } 49 50 return 0; 51 } 52 53 void 54 spdk_scsi_fini(void) 55 { 56 pthread_mutex_destroy(&g_scsi.mutex); 57 } 58 59 SPDK_TRACE_REGISTER_FN(scsi_trace, "scsi", TRACE_GROUP_SCSI) 60 { 61 spdk_trace_register_owner(OWNER_SCSI_DEV, 'd'); 62 spdk_trace_register_object(OBJECT_SCSI_TASK, 't'); 63 spdk_trace_register_description("SCSI_TASK_DONE", TRACE_SCSI_TASK_DONE, 64 OWNER_SCSI_DEV, OBJECT_SCSI_TASK, 0, 0, ""); 65 spdk_trace_register_description("SCSI_TASK_START", TRACE_SCSI_TASK_START, 66 OWNER_SCSI_DEV, OBJECT_SCSI_TASK, 0, 0, ""); 67 } 68 69 uint64_t 70 spdk_scsi_lun_id_int_to_fmt(int lun_id) 71 { 72 uint64_t fmt_lun, method; 73 74 if (SPDK_SCSI_DEV_MAX_LUN <= 0x0100) { 75 /* below 256 */ 76 method = 0x00U; 77 fmt_lun = (method & 0x03U) << 62; 78 fmt_lun |= ((uint64_t)lun_id & 0x00ffU) << 48; 79 } else if (SPDK_SCSI_DEV_MAX_LUN <= 0x4000) { 80 /* below 16384 */ 81 method = 0x01U; 82 fmt_lun = (method & 0x03U) << 62; 83 fmt_lun |= ((uint64_t)lun_id & 0x3fffU) << 48; 84 } else { 85 /* XXX */ 86 fmt_lun = 0; 87 } 88 89 return fmt_lun; 90 } 91 92 int 93 spdk_scsi_lun_id_fmt_to_int(uint64_t fmt_lun) 94 { 95 uint64_t method; 96 int lun_i; 97 98 method = (fmt_lun >> 62) & 0x03U; 99 fmt_lun = fmt_lun >> 48; 100 if (method == 0x00U) { 101 lun_i = (int)(fmt_lun & 0x00ffU); 102 } else if (method == 0x01U) { 103 lun_i = (int)(fmt_lun & 0x3fffU); 104 } else { 105 lun_i = 0xffffU; 106 } 107 return lun_i; 108 } 109 110 SPDK_LOG_REGISTER_COMPONENT(scsi) 111