Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/dev/qat/qat_api/common/compression/include/dc_session.h
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1 /* SPDX-License-Identifier: BSD-3-Clause */ 2 /* Copyright(c) 2007-2022 Intel Corporation */ 3 /* $FreeBSD$ */ 4 /** 5 ***************************************************************************** 6 * @file dc_session.h 7 * 8 * @ingroup Dc_DataCompression 9 * 10 * @description 11 * Definition of the Data Compression session parameters. 12 * 13 *****************************************************************************/ 14 #ifndef DC_SESSION_H 15 #define DC_SESSION_H 16 17 #include "cpa_dc_dp.h" 18 #include "icp_qat_fw_comp.h" 19 #include "sal_qat_cmn_msg.h" 20 #include "sal_types_compression.h" 21 22 /* Maximum number of intermediate buffers SGLs for devices 23 * with a maximum of 6 compression slices */ 24 #define DC_QAT_MAX_NUM_INTER_BUFFERS_6COMP_SLICES (12) 25 26 /* Maximum number of intermediate buffers SGLs for devices 27 * with a maximum of 10 max compression slices */ 28 #define DC_QAT_MAX_NUM_INTER_BUFFERS_10COMP_SLICES (20) 29 30 /* Maximum number of intermediate buffers SGLs for devices 31 * with a maximum of 24 max compression slices and 32 MEs */ 32 #define DC_QAT_MAX_NUM_INTER_BUFFERS_24COMP_SLICES (64) 33 34 /* Maximum size of the state registers 64 bytes */ 35 #define DC_QAT_STATE_REGISTERS_MAX_SIZE (64) 36 37 /* Size of the history window. 38 * Base 2 logarithm of maximum window size minus 8 */ 39 #define DC_4K_WINDOW_SIZE (4) 40 #define DC_8K_WINDOW_SIZE (5) 41 #define DC_16K_WINDOW_SIZE (6) 42 #define DC_32K_WINDOW_SIZE (7) 43 44 /* Context size */ 45 #define DC_DEFLATE_MAX_CONTEXT_SIZE (49152) 46 #define DC_INFLATE_CONTEXT_SIZE (36864) 47 48 #define DC_DEFLATE_EH_MAX_CONTEXT_SIZE (65536) 49 #define DC_DEFLATE_EH_MIN_CONTEXT_SIZE (49152) 50 #define DC_INFLATE_EH_CONTEXT_SIZE (34032) 51 52 /* Retrieve the session descriptor pointer from the session context structure 53 * that the user allocates. The pointer to the internally realigned address 54 * is stored at the start of the session context that the user allocates */ 55 #define DC_SESSION_DESC_FROM_CTX_GET(pSession) \ 56 (dc_session_desc_t *)(*(LAC_ARCH_UINT *)pSession) 57 58 /* Maximum size for the compression part of the content descriptor */ 59 #define DC_QAT_COMP_CONTENT_DESC_SIZE sizeof(icp_qat_fw_comp_cd_hdr_t) 60 61 /* Maximum size for the translator part of the content descriptor */ 62 #define DC_QAT_TRANS_CONTENT_DESC_SIZE \ 63 (sizeof(icp_qat_fw_xlt_cd_hdr_t) + DC_QAT_MAX_TRANS_SETUP_BLK_SZ) 64 65 /* Maximum size of the decompression content descriptor */ 66 #define DC_QAT_CONTENT_DESC_DECOMP_MAX_SIZE \ 67 LAC_ALIGN_POW2_ROUNDUP(DC_QAT_COMP_CONTENT_DESC_SIZE, \ 68 (1 << LAC_64BYTE_ALIGNMENT_SHIFT)) 69 70 /* Maximum size of the compression content descriptor */ 71 #define DC_QAT_CONTENT_DESC_COMP_MAX_SIZE \ 72 LAC_ALIGN_POW2_ROUNDUP(DC_QAT_COMP_CONTENT_DESC_SIZE + \ 73 DC_QAT_TRANS_CONTENT_DESC_SIZE, \ 74 (1 << LAC_64BYTE_ALIGNMENT_SHIFT)) 75 76 /* Direction of the request */ 77 typedef enum dc_request_dir_e { 78 DC_COMPRESSION_REQUEST = 1, 79 DC_DECOMPRESSION_REQUEST 80 } dc_request_dir_t; 81 82 /* Type of the compression request */ 83 typedef enum dc_request_type_e { 84 DC_REQUEST_FIRST = 1, 85 DC_REQUEST_SUBSEQUENT 86 } dc_request_type_t; 87 88 typedef enum dc_block_type_e { 89 DC_CLEARTEXT_TYPE = 0, 90 DC_STATIC_TYPE, 91 DC_DYNAMIC_TYPE 92 } dc_block_type_t; 93 94 /* Internal data structure supporting end to end data integrity checks. */ 95 typedef struct dc_integrity_crc_fw_s { 96 Cpa32U crc32; 97 /* CRC32 checksum returned for compressed data */ 98 Cpa32U adler32; 99 /* ADLER32 checksum returned for compressed data */ 100 101 union { 102 struct { 103 Cpa32U oCrc32Cpr; 104 /* CRC32 checksum returned for data output by 105 * compression accelerator */ 106 Cpa32U iCrc32Cpr; 107 /* CRC32 checksum returned for input data to compression 108 * accelerator 109 */ 110 Cpa32U oCrc32Xlt; 111 /* CRC32 checksum returned for data output by translator 112 * accelerator 113 */ 114 Cpa32U iCrc32Xlt; 115 /* CRC32 checksum returned for input data to translator 116 * accelerator 117 */ 118 Cpa32U xorFlags; 119 /* Initialise transactor pCRC controls in state register 120 */ 121 Cpa32U crcPoly; 122 /* CRC32 polynomial used by hardware */ 123 Cpa32U xorOut; 124 /* CRC32 from XOR stage (Input CRC is xor'ed with value 125 * in the state) */ 126 Cpa32U deflateBlockType; 127 /* Bit 1 - Bit 0 128 * 0 0 -> RAW DATA + Deflate header. 129 * This will not produced any CRC check 130 * because the output will not come 131 * from the slices. It will be a simple 132 * copy from input to output buffer 133 * list. 0 1 -> Static deflate block type 1 0 -> 134 * Dynamic deflate block type 1 1 -> Invalid type 135 */ 136 }; 137 138 struct { 139 Cpa64U iCrc64Cpr; 140 /* CRC64 checksum returned for input data to compression 141 * accelerator 142 */ 143 Cpa64U oCrc64Cpr; 144 /* CRC64 checksum returned for data output by 145 * compression accelerator */ 146 Cpa64U iCrc64Xlt; 147 /* CRC64 checksum returned for input data to translator 148 * accelerator 149 */ 150 Cpa64U oCrc64Xlt; 151 /* CRC64 checksum returned for data output by translator 152 * accelerator 153 */ 154 Cpa64U crc64Poly; 155 /* CRC64 polynomial used by hardware */ 156 Cpa64U xor64Out; 157 /* CRC64 from XOR stage (Input CRC is xor'ed with value 158 * in the state) */ 159 }; 160 }; 161 } dc_integrity_crc_fw_t; 162 163 typedef struct dc_sw_checksums_s { 164 union { 165 struct { 166 Cpa32U swCrc32I; 167 Cpa32U swCrc32O; 168 }; 169 170 struct { 171 Cpa64U swCrc64I; 172 Cpa64U swCrc64O; 173 }; 174 }; 175 } dc_sw_checksums_t; 176 177 /* Session descriptor structure for compression */ 178 typedef struct dc_session_desc_s { 179 Cpa8U stateRegistersComp[DC_QAT_STATE_REGISTERS_MAX_SIZE]; 180 /**< State registers for compression */ 181 Cpa8U stateRegistersDecomp[DC_QAT_STATE_REGISTERS_MAX_SIZE]; 182 /**< State registers for decompression */ 183 icp_qat_fw_comp_req_t reqCacheComp; 184 /**< Cache as much as possible of the compression request in a pre-built 185 * request */ 186 icp_qat_fw_comp_req_t reqCacheDecomp; 187 /**< Cache as much as possible of the decompression request in a 188 * pre-built 189 * request */ 190 dc_request_type_t requestType; 191 /**< Type of the compression request. As stateful mode do not support 192 * more 193 * than one in-flight request there is no need to use spinlocks */ 194 dc_request_type_t previousRequestType; 195 /**< Type of the previous compression request. Used in cases where there 196 * the 197 * stateful operation needs to be resubmitted */ 198 CpaDcHuffType huffType; 199 /**< Huffman tree type */ 200 CpaDcCompType compType; 201 /**< Compression type */ 202 CpaDcChecksum checksumType; 203 /**< Type of checksum */ 204 CpaDcAutoSelectBest autoSelectBestHuffmanTree; 205 /**< Indicates if the implementation selects the best Huffman encoding 206 */ 207 CpaDcSessionDir sessDirection; 208 /**< Session direction */ 209 CpaDcSessionState sessState; 210 /**< Session state */ 211 Cpa32U deflateWindowSize; 212 /**< Window size */ 213 CpaDcCompLvl compLevel; 214 /**< Compression level */ 215 CpaDcCallbackFn pCompressionCb; 216 /**< Callback function defined for the traditional compression session 217 */ 218 QatUtilsAtomic pendingStatelessCbCount; 219 /**< Keeps track of number of pending requests on stateless session */ 220 QatUtilsAtomic pendingStatefulCbCount; 221 /**< Keeps track of number of pending requests on stateful session */ 222 Cpa64U pendingDpStatelessCbCount; 223 /**< Keeps track of number of data plane pending requests on stateless 224 * session */ 225 struct mtx sessionLock; 226 /**< Lock used to provide exclusive access for number of stateful 227 * in-flight 228 * requests update */ 229 CpaBoolean isDcDp; 230 /**< Indicates if the data plane API is used */ 231 Cpa32U minContextSize; 232 /**< Indicates the minimum size required to allocate the context buffer 233 */ 234 CpaBufferList *pContextBuffer; 235 /**< Context buffer */ 236 Cpa32U historyBuffSize; 237 /**< Size of the history buffer */ 238 Cpa64U cumulativeConsumedBytes; 239 /**< Cumulative amount of consumed bytes. Used to build the footer in 240 * the 241 * stateful case */ 242 Cpa32U previousChecksum; 243 /**< Save the previous value of the checksum. Used to process zero byte 244 * stateful compression or decompression requests */ 245 CpaBoolean isSopForCompressionProcessed; 246 /**< Indicates whether a Compression Request is received in this session 247 */ 248 CpaBoolean isSopForDecompressionProcessed; 249 /**< Indicates whether a Decompression Request is received in this 250 * session 251 */ 252 /**< Data integrity table */ 253 dc_integrity_crc_fw_t dataIntegrityCrcs; 254 /**< Physical address of Data integrity buffer */ 255 CpaPhysicalAddr physDataIntegrityCrcs; 256 /* Seed checksums structure used to calculate software calculated 257 * checksums. 258 */ 259 dc_sw_checksums_t seedSwCrc; 260 /* Driver calculated integrity software CRC */ 261 dc_sw_checksums_t integritySwCrc; 262 /* Flag to disable or enable CnV Error Injection mechanism */ 263 CpaBoolean cnvErrorInjection; 264 } dc_session_desc_t; 265 266 /** 267 ***************************************************************************** 268 * @ingroup Dc_DataCompression 269 * Initialise a compression session 270 * 271 * @description 272 * This function will initialise a compression session 273 * 274 * @param[in] dcInstance Instance handle derived from discovery 275 * functions 276 * @param[in,out] pSessionHandle Pointer to a session handle 277 * @param[in,out] pSessionData Pointer to a user instantiated structure 278 * containing session data 279 * @param[in] pContextBuffer Pointer to context buffer 280 * 281 * @param[in] callbackFn For synchronous operation this callback 282 * shall be a null pointer 283 * 284 * @retval CPA_STATUS_SUCCESS Function executed successfully 285 * @retval CPA_STATUS_FAIL Function failed 286 * @retval CPA_STATUS_INVALID_PARAM Invalid parameter passed in 287 * @retval CPA_STATUS_RESOURCE Error related to system resources 288 *****************************************************************************/ 289 CpaStatus dcInitSession(CpaInstanceHandle dcInstance, 290 CpaDcSessionHandle pSessionHandle, 291 CpaDcSessionSetupData *pSessionData, 292 CpaBufferList *pContextBuffer, 293 CpaDcCallbackFn callbackFn); 294 295 /** 296 ***************************************************************************** 297 * @ingroup Dc_DataCompression 298 * Get the size of the memory required to hold the session information 299 * 300 * @description 301 * This function will get the size of the memory required to hold the 302 * session information 303 * 304 * @param[in] dcInstance Instance handle derived from discovery 305 * functions 306 * @param[in] pSessionData Pointer to a user instantiated structure 307 * containing session data 308 * @param[out] pSessionSize On return, this parameter will be the size 309 * of the memory that will be 310 * required by cpaDcInitSession() for session 311 * data. 312 * @param[out] pContextSize On return, this parameter will be the size 313 * of the memory that will be required 314 * for context data. Context data is 315 * save/restore data including history and 316 * any implementation specific data that is 317 * required for a save/restore operation. 318 * 319 * @retval CPA_STATUS_SUCCESS Function executed successfully 320 * @retval CPA_STATUS_FAIL Function failed 321 * @retval CPA_STATUS_INVALID_PARAM Invalid parameter passed in 322 *****************************************************************************/ 323 CpaStatus dcGetSessionSize(CpaInstanceHandle dcInstance, 324 CpaDcSessionSetupData *pSessionData, 325 Cpa32U *pSessionSize, 326 Cpa32U *pContextSize); 327 328 /** 329 ***************************************************************************** 330 * @ingroup Dc_DataCompression 331 * Set the cnvErrorInjection flag in session descriptor 332 * 333 * @description 334 * This function enables the CnVError injection for the session 335 * passed in. All Compression requests sent within the session 336 * are injected with CnV errors. This error injection is for the 337 * duration of the session. Resetting the session results in 338 * setting being cleared. CnV error injection does not apply to 339 * Data Plane API. 340 * 341 * @param[in] dcInstance Instance Handle 342 * @param[in] pSessionHandle Pointer to a session handle 343 * 344 * @retval CPA_STATUS_SUCCESS Function executed successfully 345 * @retval CPA_STATUS_INVALID_PARAM Invalid parameter passed in 346 * @retval CPA_STATUS_UNSUPPORTED Unsupported feature 347 *****************************************************************************/ 348 CpaStatus dcSetCnvError(CpaInstanceHandle dcInstance, 349 CpaDcSessionHandle pSessionHandle); 350 351 /** 352 ***************************************************************************** 353 * @ingroup Dc_DataCompression 354 * Check that pSessionData is valid 355 * 356 * @description 357 * Check that all the parameters defined in the pSessionData are valid 358 * 359 * @param[in] pSessionData Pointer to a user instantiated structure 360 * containing session data 361 * 362 * @retval CPA_STATUS_SUCCESS Function executed successfully 363 * @retval CPA_STATUS_FAIL Function failed to find device 364 * @retval CPA_STATUS_INVALID_PARAM Invalid parameter passed in 365 * @retval CPA_STATUS_UNSUPPORTED Unsupported algorithm/feature 366 * 367 *****************************************************************************/ 368 CpaStatus dcCheckSessionData(const CpaDcSessionSetupData *pSessionData, 369 CpaInstanceHandle dcInstance); 370 371 /** 372 ***************************************************************************** 373 * @ingroup Dc_DataCompression 374 * Get the compression command id for the given session setup data. 375 * 376 * @description 377 * This function will get the compression command id based on parameters 378 * passed in the given session setup data. 379 * 380 * @param[in] pService Pointer to the service 381 * @param[in] pSessionData Pointer to a user instantiated 382 * structure containing session data 383 * @param[out] pDcCmdId Pointer to the command id 384 * 385 * @retval CPA_STATUS_SUCCESS Function executed successfully 386 * @retval CPA_STATUS_UNSUPPORTED Unsupported algorithm/feature 387 * 388 *****************************************************************************/ 389 CpaStatus dcGetCompressCommandId(sal_compression_service_t *pService, 390 CpaDcSessionSetupData *pSessionData, 391 Cpa8U *pDcCmdId); 392 393 /** 394 ***************************************************************************** 395 * @ingroup Dc_DataCompression 396 * Get the decompression command id for the given session setup data. 397 * 398 * @description 399 * This function will get the decompression command id based on parameters 400 * passed in the given session setup data. 401 * 402 * @param[in] pService Pointer to the service 403 * @param[in] pSessionData Pointer to a user instantiated 404 * structure containing session data 405 * @param[out] pDcCmdId Pointer to the command id 406 * 407 * @retval CPA_STATUS_SUCCESS Function executed successfully 408 * @retval CPA_STATUS_UNSUPPORTED Unsupported algorithm/feature 409 * 410 *****************************************************************************/ 411 CpaStatus dcGetDecompressCommandId(sal_compression_service_t *pService, 412 CpaDcSessionSetupData *pSessionData, 413 Cpa8U *pDcCmdId); 414 415 /** 416 ***************************************************************************** 417 * @ingroup Dc_DataCompression 418 * Populate the translator content descriptor 419 * 420 * @description 421 * This function will populate the translator content descriptor 422 * 423 * @param[out] pMsg Pointer to the compression message 424 * @param[in] nextSlice Next slice 425 * 426 *****************************************************************************/ 427 void dcTransContentDescPopulate(icp_qat_fw_comp_req_t *pMsg, 428 icp_qat_fw_slice_t nextSlice); 429 430 #endif /* DC_SESSION_H */
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