1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2009-2012,2017 Microsoft Corp. 5 * Copyright (c) 2012 NetApp Inc. 6 * Copyright (c) 2012 Citrix Inc. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice unmodified, this list of conditions, and the following 14 * disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * 30 * $FreeBSD$ 31 */ 32 33 #ifndef __HV_VSTORAGE_H__ 34 #define __HV_VSTORAGE_H__ 35 36 /* 37 * Major/minor macros. Minor version is in LSB, meaning that earlier flat 38 * version numbers will be interpreted as "0.x" (i.e., 1 becomes 0.1). 39 */ 40 41 #define VMSTOR_PROTOCOL_MAJOR(VERSION_) (((VERSION_) >> 8) & 0xff) 42 #define VMSTOR_PROTOCOL_MINOR(VERSION_) (((VERSION_) ) & 0xff) 43 #define VMSTOR_PROTOCOL_VERSION(MAJOR_, MINOR_) ((((MAJOR_) & 0xff) << 8) | \ 44 (((MINOR_) & 0xff) )) 45 46 #define VMSTOR_PROTOCOL_VERSION_WIN6 VMSTOR_PROTOCOL_VERSION(2, 0) 47 #define VMSTOR_PROTOCOL_VERSION_WIN7 VMSTOR_PROTOCOL_VERSION(4, 2) 48 #define VMSTOR_PROTOCOL_VERSION_WIN8 VMSTOR_PROTOCOL_VERSION(5, 1) 49 #define VMSTOR_PROTOCOL_VERSION_WIN8_1 VMSTOR_PROTOCOL_VERSION(6, 0) 50 #define VMSTOR_PROTOCOL_VERSION_WIN10 VMSTOR_PROTOCOL_VERSION(6, 2) 51 /* 52 * Invalid version. 53 */ 54 #define VMSTOR_INVALID_PROTOCOL_VERSION -1 55 56 /* 57 * Version history: 58 * V1 Beta 0.1 59 * V1 RC < 2008/1/31 1.0 60 * V1 RC > 2008/1/31 2.0 61 * Win7: 4.2 62 * Win8: 5.1 63 */ 64 65 #define VMSTOR_PROTOCOL_VERSION_CURRENT VMSTOR_PROTOCOL_VERSION(5, 1) 66 67 /** 68 * Packet structure ops describing virtual storage requests. 69 */ 70 enum vstor_packet_ops { 71 VSTOR_OPERATION_COMPLETEIO = 1, 72 VSTOR_OPERATION_REMOVEDEVICE = 2, 73 VSTOR_OPERATION_EXECUTESRB = 3, 74 VSTOR_OPERATION_RESETLUN = 4, 75 VSTOR_OPERATION_RESETADAPTER = 5, 76 VSTOR_OPERATION_RESETBUS = 6, 77 VSTOR_OPERATION_BEGININITIALIZATION = 7, 78 VSTOR_OPERATION_ENDINITIALIZATION = 8, 79 VSTOR_OPERATION_QUERYPROTOCOLVERSION = 9, 80 VSTOR_OPERATION_QUERYPROPERTIES = 10, 81 VSTOR_OPERATION_ENUMERATE_BUS = 11, 82 VSTOR_OPERATION_FCHBA_DATA = 12, 83 VSTOR_OPERATION_CREATE_MULTI_CHANNELS = 13, 84 VSTOR_OPERATION_MAXIMUM = 13 85 }; 86 87 88 /* 89 * Platform neutral description of a scsi request - 90 * this remains the same across the write regardless of 32/64 bit 91 * note: it's patterned off the Windows DDK SCSI_PASS_THROUGH structure 92 */ 93 94 #define CDB16GENERIC_LENGTH 0x10 95 #define SENSE_BUFFER_SIZE 0x14 96 #define MAX_DATA_BUFFER_LENGTH_WITH_PADDING 0x14 97 98 #define POST_WIN7_STORVSC_SENSE_BUFFER_SIZE 0x14 99 #define PRE_WIN8_STORVSC_SENSE_BUFFER_SIZE 0x12 100 101 102 struct vmscsi_win8_extension { 103 /* 104 * The following were added in Windows 8 105 */ 106 uint16_t reserve; 107 uint8_t queue_tag; 108 uint8_t queue_action; 109 uint32_t srb_flags; 110 uint32_t time_out_value; 111 uint32_t queue_sort_ey; 112 } __packed; 113 114 struct vmscsi_req { 115 uint16_t length; 116 uint8_t srb_status; 117 uint8_t scsi_status; 118 119 /* HBA number, set to the order number detected by initiator. */ 120 uint8_t port; 121 /* SCSI bus number or bus_id, different from CAM's path_id. */ 122 uint8_t path_id; 123 124 uint8_t target_id; 125 uint8_t lun; 126 127 uint8_t cdb_len; 128 uint8_t sense_info_len; 129 uint8_t data_in; 130 uint8_t reserved; 131 132 uint32_t transfer_len; 133 134 union { 135 uint8_t cdb[CDB16GENERIC_LENGTH]; 136 137 uint8_t sense_data[SENSE_BUFFER_SIZE]; 138 139 uint8_t reserved_array[MAX_DATA_BUFFER_LENGTH_WITH_PADDING]; 140 } u; 141 142 /* 143 * The following was added in win8. 144 */ 145 struct vmscsi_win8_extension win8_extension; 146 147 } __packed; 148 149 /** 150 * This structure is sent during the initialization phase to get the different 151 * properties of the channel. 152 */ 153 154 struct vmstor_chan_props { 155 uint16_t proto_ver; 156 uint8_t path_id; 157 uint8_t target_id; 158 159 uint16_t max_channel_cnt; 160 161 /** 162 * Note: port number is only really known on the client side 163 */ 164 uint16_t port; 165 uint32_t flags; 166 uint32_t max_transfer_bytes; 167 168 /** 169 * This id is unique for each channel and will correspond with 170 * vendor specific data in the inquiry_ata 171 */ 172 uint64_t unique_id; 173 174 } __packed; 175 176 /** 177 * This structure is sent during the storage protocol negotiations. 178 */ 179 180 struct vmstor_proto_ver 181 { 182 /** 183 * Major (MSW) and minor (LSW) version numbers. 184 */ 185 uint16_t major_minor; 186 187 uint16_t revision; /* always zero */ 188 } __packed; 189 190 /** 191 * Channel Property Flags 192 */ 193 194 #define STORAGE_CHANNEL_REMOVABLE_FLAG 0x1 195 #define STORAGE_CHANNEL_EMULATED_IDE_FLAG 0x2 196 197 198 struct vstor_packet { 199 /** 200 * Requested operation type 201 */ 202 enum vstor_packet_ops operation; 203 204 /* 205 * Flags - see below for values 206 */ 207 uint32_t flags; 208 209 /** 210 * Status of the request returned from the server side. 211 */ 212 uint32_t status; 213 214 union 215 { 216 /** 217 * Structure used to forward SCSI commands from the client to 218 * the server. 219 */ 220 struct vmscsi_req vm_srb; 221 222 /** 223 * Structure used to query channel properties. 224 */ 225 struct vmstor_chan_props chan_props; 226 227 /** 228 * Used during version negotiations. 229 */ 230 struct vmstor_proto_ver version; 231 232 /** 233 * Number of multichannels to create 234 */ 235 uint16_t multi_channels_cnt; 236 } u; 237 238 } __packed; 239 240 241 /** 242 * SRB (SCSI Request Block) Status Codes 243 */ 244 #define SRB_STATUS_PENDING 0x00 245 #define SRB_STATUS_SUCCESS 0x01 246 #define SRB_STATUS_ABORTED 0x02 247 #define SRB_STATUS_ERROR 0x04 248 #define SRB_STATUS_DATA_OVERRUN 0x12 249 #define SRB_STATUS_INVALID_LUN 0x20 250 /** 251 * SRB Status Masks (can be combined with above status codes) 252 */ 253 #define SRB_STATUS_QUEUE_FROZEN 0x40 254 #define SRB_STATUS_AUTOSENSE_VALID 0x80 255 256 #define SRB_STATUS(status) \ 257 ((status) & ~(SRB_STATUS_AUTOSENSE_VALID | SRB_STATUS_QUEUE_FROZEN)) 258 /* 259 * SRB Flag Bits 260 */ 261 262 #define SRB_FLAGS_QUEUE_ACTION_ENABLE 0x00000002 263 #define SRB_FLAGS_DISABLE_DISCONNECT 0x00000004 264 #define SRB_FLAGS_DISABLE_SYNCH_TRANSFER 0x00000008 265 #define SRB_FLAGS_BYPASS_FROZEN_QUEUE 0x00000010 266 #define SRB_FLAGS_DISABLE_AUTOSENSE 0x00000020 267 #define SRB_FLAGS_DATA_IN 0x00000040 268 #define SRB_FLAGS_DATA_OUT 0x00000080 269 #define SRB_FLAGS_NO_DATA_TRANSFER 0x00000000 270 #define SRB_FLAGS_UNSPECIFIED_DIRECTION (SRB_FLAGS_DATA_IN | SRB_FLAGS_DATA_OUT) 271 #define SRB_FLAGS_NO_QUEUE_FREEZE 0x00000100 272 #define SRB_FLAGS_ADAPTER_CACHE_ENABLE 0x00000200 273 #define SRB_FLAGS_FREE_SENSE_BUFFER 0x00000400 274 /** 275 * Packet flags 276 */ 277 278 /** 279 * This flag indicates that the server should send back a completion for this 280 * packet. 281 */ 282 #define REQUEST_COMPLETION_FLAG 0x1 283 284 /** 285 * This is the set of flags that the vsc can set in any packets it sends 286 */ 287 #define VSC_LEGAL_FLAGS (REQUEST_COMPLETION_FLAG) 288 289 #endif /* __HV_VSTORAGE_H__ */ 290