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annotate usr/src/uts/common/sys/stmf.h @ 14074:cac17ab5e600

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3862 stmf + kstat = kernel panic 3863 stmf_itl_task_start() must check for ilu->ilu_kstat_io is non-null 3864 memory leak in the iSCSI code Reviewed by: Adam Leventhal <ahl@delphix.com> Reviewed by: Jeremy Jones <jeremy@delphix.com> Reviewed by: Sebastien Roy <sebastien.roy@delphix.com> Reviewed by: Dan McDonald <danmcd@nexenta.com> Reviewed by: Garrett D'Amore <garrett@damore.org> Reviewed by: Richard Elling <richard.elling@gmail.com> Approved by: Gordon Ross <gwr@nexenta.com>
author Jeff Biseda <jeff.biseda@delphix.com>
date Sun, 07 Jul 2013 18:18:37 -0800
parents f559965e4a2f
children
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1 /*
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2 * CDDL HEADER START
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3 *
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4 * The contents of this file are subject to the terms of the
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5 * Common Development and Distribution License (the "License").
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6 * You may not use this file except in compliance with the License.
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7 *
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8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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9 * or http://www.opensolaris.org/os/licensing.
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10 * See the License for the specific language governing permissions
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11 * and limitations under the License.
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12 *
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13 * When distributing Covered Code, include this CDDL HEADER in each
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14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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15 * If applicable, add the following below this CDDL HEADER, with the
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16 * fields enclosed by brackets "[]" replaced with your own identifying
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17 * information: Portions Copyright [yyyy] [name of copyright owner]
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18 *
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19 * CDDL HEADER END
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20 */
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21 /*
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22 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
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cac17ab5e600 3862 stmf + kstat = kernel panic
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23 * Copyright (c) 2013 by Delphix. All rights reserved.
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24 */
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25 #ifndef _STMF_H
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26 #define _STMF_H
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27
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28 #include <sys/stmf_defines.h>
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29
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30 #ifdef __cplusplus
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31 extern "C" {
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32 #endif
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33
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34 typedef enum stmf_struct_id {
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35 STMF_STRUCT_LU_PROVIDER = 1,
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36 STMF_STRUCT_PORT_PROVIDER,
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37 STMF_STRUCT_STMF_LOCAL_PORT,
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38 STMF_STRUCT_STMF_LU,
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39 STMF_STRUCT_SCSI_SESSION,
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40 STMF_STRUCT_SCSI_TASK,
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41 STMF_STRUCT_DATA_BUF,
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42 STMF_STRUCT_DBUF_STORE,
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43 STMF_MAX_STRUCT_IDS
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44 } stmf_struct_id_t;
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45
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46 /*
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47 * Provider callback commands
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48 */
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49 #define STMF_PROVIDER_DATA_UPDATED 0x01
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50
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51 /*
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52 * Provider callback flags
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53 */
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54 #define STMF_PCB_STMF_ONLINING 0x0001
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55 #define STMF_PCB_PREG_COMPLETE 0x0002
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56
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57 typedef void *data_seg_handle_t;
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58 #define STMF_MAX_LU_CACHE_NTASKS 16
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59
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60 #define STMF_NO_HANDLE 0xffffffff
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61
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62 #define COMPANY_ID_NONE 0xFFFFFFFF
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63 #define COMPANY_ID_SUN 0x00144F
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64
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65 /*
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66 * The scatter/gather list buffer format is used in 2 different
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67 * contexts within stmf:
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68 * 1) supplied by the port provider that the LU provider uses to exchange
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69 * data with the backing store.
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70 * 2) supplied by the LU provider that the port provider uses exchange
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71 * data with the host initiator.
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72 * The second format is optionally supported by the port provided as
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73 * indicated by the command task flags.
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74 */
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75
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76 typedef struct stmf_sglist_ent {
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77 uint32_t seg_length;
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78 uint8_t *seg_addr;
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79 } stmf_sglist_ent_t;
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80
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81 typedef struct stmf_data_buf {
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82 void *db_stmf_private;
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83 void *db_port_private;
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84 void *db_lu_private;
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85 uint32_t db_buf_size; /* Total size of this buffer */
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86 uint32_t db_data_size; /* Intended xfer size of this buffer */
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87 uint32_t db_relative_offset;
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88 uint16_t db_sglist_length;
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89 uint16_t db_flags; /* Direction, auto status etc */
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90 stmf_status_t db_xfer_status;
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91 uint8_t db_handle; /* To track parallel buffers */
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92 hrtime_t db_xfer_start_timestamp;
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93 stmf_sglist_ent_t db_sglist[1]; /* PP scatter/gather list */
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94 } stmf_data_buf_t;
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95
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96 /*
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97 * db_flags
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98 */
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99 #define DB_DIRECTION_TO_RPORT 0x0001
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100 #define DB_DIRECTION_FROM_RPORT 0x0002
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101 #define DB_SEND_STATUS_GOOD 0x0004
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102 #define DB_STATUS_GOOD_SENT 0x0008
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103 #define DB_DONT_CACHE 0x0010
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104 #define DB_DONT_REUSE 0x0020
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105 #define DB_LU_DATA_BUF 0x0040
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106 #define DB_LPORT_XFER_ACTIVE 0x8000
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107
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108 typedef struct scsi_task {
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109 void *task_stmf_private;
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110 void *task_port_private;
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111
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112 void *task_lu_private;
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113 struct stmf_scsi_session *task_session;
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114 struct stmf_local_port *task_lport;
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115 struct stmf_lu *task_lu;
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116 void *task_lu_itl_handle; /* Assigned by LU */
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117
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118 /* CMD information from initiator */
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119 uint8_t task_lun_no[8];
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120 uint8_t task_flags; /* See def. for task flags */
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121 uint8_t task_priority; /* As per SAM-3 */
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122 uint8_t task_mgmt_function; /* If this is a TM request */
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123 uint8_t task_max_nbufs;
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124 uint8_t task_cur_nbufs;
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125 uint8_t task_csn_size; /* cmd seq no size in bits */
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126 uint16_t task_additional_flags;
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127 uint32_t task_cmd_seq_no;
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128 uint32_t task_expected_xfer_length;
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129 uint32_t task_timeout; /* In seconds */
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130 uint16_t task_ext_id;
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131 uint16_t task_cdb_length;
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132 uint8_t *task_cdb;
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133
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134 /* Fields to manage data phase */
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135 uint32_t task_cmd_xfer_length; /* xfer len based on CDB */
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136 uint32_t task_nbytes_transferred;
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137 uint32_t task_max_xfer_len; /* largest xfer allowed */
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138 uint32_t task_1st_xfer_len; /* 1st xfer hint */
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139 uint32_t task_copy_threshold; /* copy reduction threshold */
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140
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141
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142 /* Status Phase */
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143 stmf_status_t task_completion_status;
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144 uint32_t task_resid;
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145 uint8_t task_status_ctrl; /* See def. for status ctrl */
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146 uint8_t task_scsi_status;
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147 uint16_t task_sense_length;
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148 uint8_t *task_sense_data;
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149
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150 /* Misc. task data */
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151 void *task_extended_cmd;
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152
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153 } scsi_task_t;
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154
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155 /*
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156 * Maximum expected transfer length. Can also be used when the transfer
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157 * length is unknown when the task is allocated (e.g. SAS)
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158 */
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159
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160 #define TASK_MAX_XFER_LENGTH 0xFFFFFFFF
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161
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162 /*
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163 * task_flags definitions.
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164 */
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165 /*
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166 * If TF_INITIAL_BURST is set, the dbuf passed with new_task() contains
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167 * data from initial burst. Otherwise its just a buffer which the port
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168 * passed to the LU.
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169 */
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170 #define TF_INITIAL_BURST 0x80
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171 /* Both READ_DATA and WRITE_DATA can be set for bidirectional xfers */
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172 #define TF_READ_DATA 0x40
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173 #define TF_WRITE_DATA 0x20
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174 #define TF_ATTR_MASK 0x07
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175 #define TF_ATTR_UNTAGGED 0x0
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176 #define TF_ATTR_SIMPLE_QUEUE 0x1
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177 #define TF_ATTR_ORDERED_QUEUE 0x2
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178 #define TF_ATTR_HEAD_OF_QUEUE 0x3
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179 #define TF_ATTR_ACA 0x4
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180
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181 /*
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182 * Task Management flags.
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183 */
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184 #define TM_NONE 0x00
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185 #define TM_ABORT_TASK 0x01
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186 #define TM_ABORT_TASK_SET 0x02
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187 #define TM_CLEAR_ACA 0x03
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188 #define TM_CLEAR_TASK_SET 0x04
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189 #define TM_LUN_RESET 0x05
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190 #define TM_TARGET_WARM_RESET 0x06
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191 #define TM_TARGET_COLD_RESET 0x07
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192 #define TM_TASK_REASSIGN 0x08
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193 #define TM_TARGET_RESET 0x09
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194 #define TM_QUERY_TASK 0x0A
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195
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196 /*
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197 * additional flags
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198 */
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199 #define TASK_AF_ENABLE_COMP_CONF 0x01
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200 #define TASK_AF_PORT_LOAD_HIGH 0x02
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201 #define TASK_AF_NO_EXPECTED_XFER_LENGTH 0x04
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202 /*
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203 * PP sets this flag if it can process dbufs created by the LU.
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204 */
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205 #define TASK_AF_ACCEPT_LU_DBUF 0x08
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206
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207 /*
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208 * scsi_task_t extension identifiers
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209 */
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210 #define STMF_TASK_EXT_NONE 0
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211
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212 /*
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213 * max_nbufs
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214 */
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215 #define STMF_BUFS_MAX 255
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216
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217 /*
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218 * Task status ctrl
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219 */
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220 #define TASK_SCTRL_OVER 1
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221 #define TASK_SCTRL_UNDER 2
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222
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223 /*
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224 * The flags used by I/O flow.
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225 */
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226 #define STMF_IOF_LU_DONE 0x0001
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227 #define STMF_IOF_LPORT_DONE 0x0002
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228 #define STMF_IOF_STATS_ONLY 0x0004
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229
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230 /*
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231 * struct allocation flags
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232 */
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233 #define AF_FORCE_NOSLEEP 0x0001
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234 #define AF_DONTZERO 0x0002
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235
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236 typedef struct stmf_state_change_info {
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237 uint64_t st_rflags; /* Reason behind this change */
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238 char *st_additional_info;
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239 } stmf_state_change_info_t;
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240
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241 typedef struct stmf_change_status {
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242 stmf_status_t st_completion_status;
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243 char *st_additional_info;
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244 } stmf_change_status_t;
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245
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246 /*
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247 * conditions causing or affecting the change.
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248 */
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249 #define STMF_RFLAG_USER_REQUEST 0x0001
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250 #define STMF_RFLAG_FATAL_ERROR 0x0002
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251 #define STMF_RFLAG_STAY_OFFLINED 0x0004
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252 #define STMF_RFLAG_RESET 0x0008
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253 #define STMF_RFLAG_COLLECT_DEBUG_DUMP 0x0010
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254 #define STMF_RFLAG_LU_ABORT 0x0020
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255 #define STMF_RFLAG_LPORT_ABORT 0x0040
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256
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257 #define STMF_CHANGE_INFO_LEN 160
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258
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259 /*
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260 * cmds to stmf_abort entry point
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261 */
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262 #define STMF_QUEUE_TASK_ABORT 1
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263 #define STMF_REQUEUE_TASK_ABORT_LPORT 2
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264 #define STMF_REQUEUE_TASK_ABORT_LU 3
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265 #define STMF_QUEUE_ABORT_LU 4
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266
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267 /*
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268 * cmds to be used by stmf ctl
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269 */
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270 #define STMF_CMD_LU_OP 0x0100
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271 #define STMF_CMD_LPORT_OP 0x0200
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272 #define STMF_CMD_MASK 0x00ff
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273 #define STMF_CMD_ONLINE 0x0001
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274 #define STMF_CMD_OFFLINE 0x0002
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275 #define STMF_CMD_GET_STATUS 0x0003
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276 #define STMF_CMD_ONLINE_COMPLETE 0x0004
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277 #define STMF_CMD_OFFLINE_COMPLETE 0x0005
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278 #define STMF_ACK_ONLINE_COMPLETE 0x0006
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279 #define STMF_ACK_OFFLINE_COMPLETE 0x0007
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280
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281 #define STMF_CMD_LU_ONLINE (STMF_CMD_LU_OP | STMF_CMD_ONLINE)
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282 #define STMF_CMD_LU_OFFLINE (STMF_CMD_LU_OP | STMF_CMD_OFFLINE)
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283 #define STMF_CMD_LPORT_ONLINE (STMF_CMD_LPORT_OP | STMF_CMD_ONLINE)
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284 #define STMF_CMD_LPORT_OFFLINE (STMF_CMD_LPORT_OP | STMF_CMD_OFFLINE)
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285 #define STMF_CMD_GET_LU_STATUS (STMF_CMD_LU_OP | STMF_CMD_GET_STATUS)
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286 #define STMF_CMD_GET_LPORT_STATUS \
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287 (STMF_CMD_LPORT_OP | STMF_CMD_GET_STATUS)
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288 #define STMF_CMD_LU_ONLINE_COMPLETE \
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289 (STMF_CMD_LU_OP | STMF_CMD_ONLINE_COMPLETE)
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290 #define STMF_CMD_LPORT_ONLINE_COMPLETE \
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291 (STMF_CMD_LPORT_OP | STMF_CMD_ONLINE_COMPLETE)
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292 #define STMF_ACK_LU_ONLINE_COMPLETE \
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293 (STMF_CMD_LU_OP | STMF_ACK_ONLINE_COMPLETE)
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294 #define STMF_ACK_LPORT_ONLINE_COMPLETE \
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295 (STMF_CMD_LPORT_OP | STMF_ACK_ONLINE_COMPLETE)
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296 #define STMF_CMD_LU_OFFLINE_COMPLETE \
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297 (STMF_CMD_LU_OP | STMF_CMD_OFFLINE_COMPLETE)
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298 #define STMF_CMD_LPORT_OFFLINE_COMPLETE \
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299 (STMF_CMD_LPORT_OP | STMF_CMD_OFFLINE_COMPLETE)
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300 #define STMF_ACK_LU_OFFLINE_COMPLETE \
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301 (STMF_CMD_LU_OP | STMF_ACK_OFFLINE_COMPLETE)
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302 #define STMF_ACK_LPORT_OFFLINE_COMPLETE \
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303 (STMF_CMD_LPORT_OP | STMF_ACK_OFFLINE_COMPLETE)
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304 /*
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305 * For LPORTs and LUs to create their own ctl cmds which dont
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306 * conflict with stmf ctl cmds.
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307 */
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308 #define STMF_LPORT_CTL_CMDS 0x1000
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309 #define STMF_LU_CTL_CMDS 0x2000
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310
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311 /*
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312 * Commands for various info routines.
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313 */
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314 /* Command classifiers */
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315 #define SI_LPORT 0x1000000
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316 #define SI_STMF 0x2000000
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317 #define SI_LU 0x4000000
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318 #define SI_LPORT_FC 0x0000000
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319 #define SI_LPORT_ISCSI 0x0010000
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320 #define SI_LPORT_SAS 0x0020000
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321 #define SI_STMF_LU 0x0010000
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322 #define SI_STMF_LPORT 0x0020000
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323
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324 #define SI_GET_CLASS(v) ((v) & 0xFF000000)
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325 #define SI_GET_SUBCLASS(v) ((v) & 0x00FF0000)
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326
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327 /* Commands for LPORT info routines */
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328 /* XXX - Implement these. */
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329 #if 0
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330 #define SI_LPORT_FC_PORTINFO (SI_LPORT | SI_LPORT_FC | 1)
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331 #define SI_RPORT_FC_PORTINFO (SI_LPORT | SI_LPORT_FC | 2)
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332 #endif
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333
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334 /*
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335 * Events
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336 */
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337 #define STMF_EVENT_ALL ((int)-1)
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338 #define LPORT_EVENT_INITIAL_LUN_MAPPED 0
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339
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340 /*
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341 * This needs to go into common/ddi/sunddi.h
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342 */
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343 #define DDI_NT_STMF "ddi_scsi_target:framework"
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344 #define DDI_NT_STMF_LP "ddi_scsi_target:lu_provider"
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345 #define DDI_NT_STMF_PP "ddi_scsi_target:port_provider"
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346
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347 /*
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348 * VPD page bits.
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349 */
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350 #define STMF_VPD_LU_ID 0x01
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351 #define STMF_VPD_TARGET_ID 0x02
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352 #define STMF_VPD_TP_GROUP 0x04
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353 #define STMF_VPD_RELATIVE_TP_ID 0x08
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354
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355 /*
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356 * Common macros to simplify coding
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357 */
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358 #define STMF_SEC2TICK(x_sec) (drv_usectohz((x_sec) * 1000000))
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359
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360 void stmf_trace(caddr_t ident, const char *fmt, ...);
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361 void *stmf_alloc(stmf_struct_id_t sid, int additional_size, int alloc_flags);
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362 void stmf_free(void *struct_ptr);
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363 struct scsi_task *stmf_task_alloc(struct stmf_local_port *lport,
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364 struct stmf_scsi_session *ss, uint8_t *lun, uint16_t cdb_length,
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365 uint16_t ext_id);
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366 void stmf_post_task(scsi_task_t *task, stmf_data_buf_t *dbuf);
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367 stmf_data_buf_t *stmf_alloc_dbuf(scsi_task_t *task, uint32_t size,
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368 uint32_t *pminsize, uint32_t flags);
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369 void stmf_free_dbuf(scsi_task_t *task, stmf_data_buf_t *dbuf);
12314
0ed71edeac88 6909809 COMSTAR should avoid extra data copy to zvol-based backing store
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parents: 11773
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370 stmf_status_t stmf_setup_dbuf(scsi_task_t *task, stmf_data_buf_t *dbuf,
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parents: 11773
diff changeset
371 uint32_t flags);
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372 void stmf_teardown_dbuf(scsi_task_t *task, stmf_data_buf_t *dbuf);
7836
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373 stmf_status_t stmf_xfer_data(scsi_task_t *task, stmf_data_buf_t *dbuf,
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374 uint32_t ioflags);
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375 stmf_status_t stmf_send_scsi_status(scsi_task_t *task, uint32_t ioflags);
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376 void stmf_data_xfer_done(scsi_task_t *task, stmf_data_buf_t *dbuf,
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377 uint32_t iof);
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378 void stmf_send_status_done(scsi_task_t *task, stmf_status_t s, uint32_t iof);
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379 void stmf_task_lu_done(scsi_task_t *task);
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380 void stmf_abort(int abort_cmd, scsi_task_t *task, stmf_status_t s, void *arg);
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381 void stmf_task_lu_aborted(scsi_task_t *task, stmf_status_t s, uint32_t iof);
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382 void stmf_task_lport_aborted(scsi_task_t *task, stmf_status_t s, uint32_t iof);
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383 stmf_status_t stmf_task_poll_lu(scsi_task_t *task, uint32_t timeout);
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384 stmf_status_t stmf_task_poll_lport(scsi_task_t *task, uint32_t timeout);
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385 stmf_status_t stmf_ctl(int cmd, void *obj, void *arg);
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386 stmf_status_t stmf_register_itl_handle(struct stmf_lu *lu, uint8_t *lun,
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387 struct stmf_scsi_session *ss, uint64_t session_id, void *itl_handle);
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388 stmf_status_t stmf_deregister_all_lu_itl_handles(struct stmf_lu *lu);
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389 stmf_status_t stmf_get_itl_handle(struct stmf_lu *lu, uint8_t *lun,
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390 struct stmf_scsi_session *ss, uint64_t session_id, void **itl_handle_retp);
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391 stmf_data_buf_t *stmf_handle_to_buf(scsi_task_t *task, uint8_t h);
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392 stmf_status_t stmf_lu_add_event(struct stmf_lu *lu, int eventid);
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393 stmf_status_t stmf_lu_remove_event(struct stmf_lu *lu, int eventid);
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394 stmf_status_t stmf_lport_add_event(struct stmf_local_port *lport, int eventid);
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395 stmf_status_t stmf_lport_remove_event(struct stmf_local_port *lport,
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396 int eventid);
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397 void stmf_wwn_to_devid_desc(struct scsi_devid_desc *sdid, uint8_t *wwn,
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398 uint8_t protocol_id);
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399 stmf_status_t stmf_scsilib_uniq_lu_id(uint32_t company_id,
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400 struct scsi_devid_desc *lu_id);
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401 stmf_status_t stmf_scsilib_uniq_lu_id2(uint32_t company_id, uint32_t host_id,
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402 struct scsi_devid_desc *lu_id);
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403 void stmf_scsilib_send_status(scsi_task_t *task, uint8_t st, uint32_t saa);
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404 uint32_t stmf_scsilib_prepare_vpd_page83(scsi_task_t *task, uint8_t *page,
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405 uint32_t page_len, uint8_t byte0, uint32_t vpd_mask);
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406 uint16_t stmf_scsilib_get_lport_rtid(struct scsi_devid_desc *devid);
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407 struct scsi_devid_desc *stmf_scsilib_get_devid_desc(uint16_t rtpid);
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408 void stmf_scsilib_handle_report_tpgs(scsi_task_t *task, stmf_data_buf_t *dbuf);
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409 void stmf_scsilib_handle_task_mgmt(scsi_task_t *task);
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410
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411 struct stmf_remote_port *stmf_scsilib_devid_to_remote_port(
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412 struct scsi_devid_desc *);
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413 boolean_t stmf_scsilib_tptid_validate(struct scsi_transport_id *,
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414 uint32_t, uint16_t *);
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415 boolean_t stmf_scsilib_tptid_compare(struct scsi_transport_id *,
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416 struct scsi_transport_id *);
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417 struct stmf_remote_port *stmf_remote_port_alloc(uint16_t);
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418 void stmf_remote_port_free(struct stmf_remote_port *);
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419 #ifdef __cplusplus
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420 }
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421 #endif
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422
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423 #endif /* _STMF_H */