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7c673cae FG |
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 | ||
7c673cae FG |
37 | struct spdk_scsi_globals g_spdk_scsi; |
38 | ||
11fdf7f2 TL |
39 | int |
40 | spdk_scsi_init(void) | |
7c673cae FG |
41 | { |
42 | int rc; | |
43 | ||
44 | rc = pthread_mutex_init(&g_spdk_scsi.mutex, NULL); | |
45 | if (rc != 0) { | |
46 | SPDK_ERRLOG("mutex_init() failed\n"); | |
47 | return -1; | |
48 | } | |
49 | ||
11fdf7f2 | 50 | return 0; |
7c673cae FG |
51 | } |
52 | ||
11fdf7f2 TL |
53 | void |
54 | spdk_scsi_fini(void) | |
7c673cae FG |
55 | { |
56 | pthread_mutex_destroy(&g_spdk_scsi.mutex); | |
7c673cae FG |
57 | } |
58 | ||
9f95a23c | 59 | SPDK_TRACE_REGISTER_FN(scsi_trace, "scsi", TRACE_GROUP_SCSI) |
7c673cae FG |
60 | { |
61 | spdk_trace_register_owner(OWNER_SCSI_DEV, 'd'); | |
62 | spdk_trace_register_object(OBJECT_SCSI_TASK, 't'); | |
9f95a23c | 63 | spdk_trace_register_description("SCSI_TASK_DONE", TRACE_SCSI_TASK_DONE, |
11fdf7f2 | 64 | OWNER_SCSI_DEV, OBJECT_SCSI_TASK, 0, 0, ""); |
9f95a23c | 65 | spdk_trace_register_description("SCSI_TASK_START", TRACE_SCSI_TASK_START, |
11fdf7f2 | 66 | OWNER_SCSI_DEV, OBJECT_SCSI_TASK, 0, 0, ""); |
7c673cae FG |
67 | } |
68 | ||
9f95a23c TL |
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 | ||
11fdf7f2 | 110 | SPDK_LOG_REGISTER_COMPONENT("scsi", SPDK_LOG_SCSI) |