1 /* 2 * Copyright(c) 2015 - 2020 Intel Corporation. 3 * 4 * This file is provided under a dual BSD/GPLv2 license. When using or 5 * redistributing this file, you may do so under either license. 6 * 7 * GPL LICENSE SUMMARY 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of version 2 of the GNU General Public License as 11 * published by the Free Software Foundation. 12 * 13 * This program is distributed in the hope that it will be useful, but 14 * WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * General Public License for more details. 17 * 18 * BSD LICENSE 19 * 20 * Redistribution and use in source and binary forms, with or without 21 * modification, are permitted provided that the following conditions 22 * are met: 23 * 24 * - Redistributions of source code must retain the above copyright 25 * notice, this list of conditions and the following disclaimer. 26 * - Redistributions in binary form must reproduce the above copyright 27 * notice, this list of conditions and the following disclaimer in 28 * the documentation and/or other materials provided with the 29 * distribution. 30 * - Neither the name of Intel Corporation nor the names of its 31 * contributors may be used to endorse or promote products derived 32 * from this software without specific prior written permission. 33 * 34 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 35 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 36 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 37 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 38 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 39 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 40 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 41 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 42 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 43 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 44 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 45 * 46 */ 47 48 #ifndef _COMMON_H 49 #define _COMMON_H 50 51 #include <rdma/hfi/hfi1_user.h> 52 53 /* 54 * This file contains defines, structures, etc. that are used 55 * to communicate between kernel and user code. 56 */ 57 58 /* version of protocol header (known to chip also). In the long run, 59 * we should be able to generate and accept a range of version numbers; 60 * for now we only accept one, and it's compiled in. 61 */ 62 #define IPS_PROTO_VERSION 2 63 64 /* 65 * These are compile time constants that you may want to enable or disable 66 * if you are trying to debug problems with code or performance. 67 * HFI1_VERBOSE_TRACING define as 1 if you want additional tracing in 68 * fast path code 69 * HFI1_TRACE_REGWRITES define as 1 if you want register writes to be 70 * traced in fast path code 71 * _HFI1_TRACING define as 0 if you want to remove all tracing in a 72 * compilation unit 73 */ 74 75 /* driver/hw feature set bitmask */ 76 #define HFI1_CAP_USER_SHIFT 24 77 #define HFI1_CAP_MASK ((1UL << HFI1_CAP_USER_SHIFT) - 1) 78 /* locked flag - if set, only HFI1_CAP_WRITABLE_MASK bits can be set */ 79 #define HFI1_CAP_LOCKED_SHIFT 63 80 #define HFI1_CAP_LOCKED_MASK 0x1ULL 81 #define HFI1_CAP_LOCKED_SMASK (HFI1_CAP_LOCKED_MASK << HFI1_CAP_LOCKED_SHIFT) 82 /* extra bits used between kernel and user processes */ 83 #define HFI1_CAP_MISC_SHIFT (HFI1_CAP_USER_SHIFT * 2) 84 #define HFI1_CAP_MISC_MASK ((1ULL << (HFI1_CAP_LOCKED_SHIFT - \ 85 HFI1_CAP_MISC_SHIFT)) - 1) 86 87 #define HFI1_CAP_KSET(cap) ({ hfi1_cap_mask |= HFI1_CAP_##cap; hfi1_cap_mask; }) 88 #define HFI1_CAP_KCLEAR(cap) \ 89 ({ \ 90 hfi1_cap_mask &= ~HFI1_CAP_##cap; \ 91 hfi1_cap_mask; \ 92 }) 93 #define HFI1_CAP_USET(cap) \ 94 ({ \ 95 hfi1_cap_mask |= (HFI1_CAP_##cap << HFI1_CAP_USER_SHIFT); \ 96 hfi1_cap_mask; \ 97 }) 98 #define HFI1_CAP_UCLEAR(cap) \ 99 ({ \ 100 hfi1_cap_mask &= ~(HFI1_CAP_##cap << HFI1_CAP_USER_SHIFT); \ 101 hfi1_cap_mask; \ 102 }) 103 #define HFI1_CAP_SET(cap) \ 104 ({ \ 105 hfi1_cap_mask |= (HFI1_CAP_##cap | (HFI1_CAP_##cap << \ 106 HFI1_CAP_USER_SHIFT)); \ 107 hfi1_cap_mask; \ 108 }) 109 #define HFI1_CAP_CLEAR(cap) \ 110 ({ \ 111 hfi1_cap_mask &= ~(HFI1_CAP_##cap | \ 112 (HFI1_CAP_##cap << HFI1_CAP_USER_SHIFT)); \ 113 hfi1_cap_mask; \ 114 }) 115 #define HFI1_CAP_LOCK() \ 116 ({ hfi1_cap_mask |= HFI1_CAP_LOCKED_SMASK; hfi1_cap_mask; }) 117 #define HFI1_CAP_LOCKED() (!!(hfi1_cap_mask & HFI1_CAP_LOCKED_SMASK)) 118 /* 119 * The set of capability bits that can be changed after initial load 120 * This set is the same for kernel and user contexts. However, for 121 * user contexts, the set can be further filtered by using the 122 * HFI1_CAP_RESERVED_MASK bits. 123 */ 124 #define HFI1_CAP_WRITABLE_MASK (HFI1_CAP_SDMA_AHG | \ 125 HFI1_CAP_HDRSUPP | \ 126 HFI1_CAP_MULTI_PKT_EGR | \ 127 HFI1_CAP_NODROP_RHQ_FULL | \ 128 HFI1_CAP_NODROP_EGR_FULL | \ 129 HFI1_CAP_ALLOW_PERM_JKEY | \ 130 HFI1_CAP_STATIC_RATE_CTRL | \ 131 HFI1_CAP_PRINT_UNIMPL | \ 132 HFI1_CAP_TID_UNMAP | \ 133 HFI1_CAP_OPFN) 134 /* 135 * A set of capability bits that are "global" and are not allowed to be 136 * set in the user bitmask. 137 */ 138 #define HFI1_CAP_RESERVED_MASK ((HFI1_CAP_SDMA | \ 139 HFI1_CAP_USE_SDMA_HEAD | \ 140 HFI1_CAP_EXTENDED_PSN | \ 141 HFI1_CAP_PRINT_UNIMPL | \ 142 HFI1_CAP_NO_INTEGRITY | \ 143 HFI1_CAP_PKEY_CHECK | \ 144 HFI1_CAP_TID_RDMA | \ 145 HFI1_CAP_OPFN | \ 146 HFI1_CAP_AIP) << \ 147 HFI1_CAP_USER_SHIFT) 148 /* 149 * Set of capabilities that need to be enabled for kernel context in 150 * order to be allowed for user contexts, as well. 151 */ 152 #define HFI1_CAP_MUST_HAVE_KERN (HFI1_CAP_STATIC_RATE_CTRL) 153 /* Default enabled capabilities (both kernel and user) */ 154 #define HFI1_CAP_MASK_DEFAULT (HFI1_CAP_HDRSUPP | \ 155 HFI1_CAP_NODROP_RHQ_FULL | \ 156 HFI1_CAP_NODROP_EGR_FULL | \ 157 HFI1_CAP_SDMA | \ 158 HFI1_CAP_PRINT_UNIMPL | \ 159 HFI1_CAP_STATIC_RATE_CTRL | \ 160 HFI1_CAP_PKEY_CHECK | \ 161 HFI1_CAP_MULTI_PKT_EGR | \ 162 HFI1_CAP_EXTENDED_PSN | \ 163 ((HFI1_CAP_HDRSUPP | \ 164 HFI1_CAP_MULTI_PKT_EGR | \ 165 HFI1_CAP_STATIC_RATE_CTRL | \ 166 HFI1_CAP_PKEY_CHECK | \ 167 HFI1_CAP_EARLY_CREDIT_RETURN) << \ 168 HFI1_CAP_USER_SHIFT)) 169 /* 170 * A bitmask of kernel/global capabilities that should be communicated 171 * to user level processes. 172 */ 173 #define HFI1_CAP_K2U (HFI1_CAP_SDMA | \ 174 HFI1_CAP_EXTENDED_PSN | \ 175 HFI1_CAP_PKEY_CHECK | \ 176 HFI1_CAP_NO_INTEGRITY) 177 178 #define HFI1_USER_SWVERSION ((HFI1_USER_SWMAJOR << HFI1_SWMAJOR_SHIFT) | \ 179 HFI1_USER_SWMINOR) 180 181 #ifndef HFI1_KERN_TYPE 182 #define HFI1_KERN_TYPE 0 183 #endif 184 185 /* 186 * Similarly, this is the kernel version going back to the user. It's 187 * slightly different, in that we want to tell if the driver was built as 188 * part of a Intel release, or from the driver from openfabrics.org, 189 * kernel.org, or a standard distribution, for support reasons. 190 * The high bit is 0 for non-Intel and 1 for Intel-built/supplied. 191 * 192 * It's returned by the driver to the user code during initialization in the 193 * spi_sw_version field of hfi1_base_info, so the user code can in turn 194 * check for compatibility with the kernel. 195 */ 196 #define HFI1_KERN_SWVERSION ((HFI1_KERN_TYPE << 31) | HFI1_USER_SWVERSION) 197 198 /* 199 * Define the driver version number. This is something that refers only 200 * to the driver itself, not the software interfaces it supports. 201 */ 202 #ifndef HFI1_DRIVER_VERSION_BASE 203 #define HFI1_DRIVER_VERSION_BASE "0.9-294" 204 #endif 205 206 /* create the final driver version string */ 207 #ifdef HFI1_IDSTR 208 #define HFI1_DRIVER_VERSION HFI1_DRIVER_VERSION_BASE " " HFI1_IDSTR 209 #else 210 #define HFI1_DRIVER_VERSION HFI1_DRIVER_VERSION_BASE 211 #endif 212 213 /* 214 * Diagnostics can send a packet by writing the following 215 * struct to the diag packet special file. 216 * 217 * This allows a custom PBC qword, so that special modes and deliberate 218 * changes to CRCs can be used. 219 */ 220 #define _DIAG_PKT_VERS 1 221 struct diag_pkt { 222 __u16 version; /* structure version */ 223 __u16 unit; /* which device */ 224 __u16 sw_index; /* send sw index to use */ 225 __u16 len; /* data length, in bytes */ 226 __u16 port; /* port number */ 227 __u16 unused; 228 __u32 flags; /* call flags */ 229 __u64 data; /* user data pointer */ 230 __u64 pbc; /* PBC for the packet */ 231 }; 232 233 /* diag_pkt flags */ 234 #define F_DIAGPKT_WAIT 0x1 /* wait until packet is sent */ 235 236 /* 237 * The next set of defines are for packet headers, and chip register 238 * and memory bits that are visible to and/or used by user-mode software. 239 */ 240 241 /* 242 * Receive Header Flags 243 */ 244 #define RHF_PKT_LEN_SHIFT 0 245 #define RHF_PKT_LEN_MASK 0xfffull 246 #define RHF_PKT_LEN_SMASK (RHF_PKT_LEN_MASK << RHF_PKT_LEN_SHIFT) 247 248 #define RHF_RCV_TYPE_SHIFT 12 249 #define RHF_RCV_TYPE_MASK 0x7ull 250 #define RHF_RCV_TYPE_SMASK (RHF_RCV_TYPE_MASK << RHF_RCV_TYPE_SHIFT) 251 252 #define RHF_USE_EGR_BFR_SHIFT 15 253 #define RHF_USE_EGR_BFR_MASK 0x1ull 254 #define RHF_USE_EGR_BFR_SMASK (RHF_USE_EGR_BFR_MASK << RHF_USE_EGR_BFR_SHIFT) 255 256 #define RHF_EGR_INDEX_SHIFT 16 257 #define RHF_EGR_INDEX_MASK 0x7ffull 258 #define RHF_EGR_INDEX_SMASK (RHF_EGR_INDEX_MASK << RHF_EGR_INDEX_SHIFT) 259 260 #define RHF_DC_INFO_SHIFT 27 261 #define RHF_DC_INFO_MASK 0x1ull 262 #define RHF_DC_INFO_SMASK (RHF_DC_INFO_MASK << RHF_DC_INFO_SHIFT) 263 264 #define RHF_RCV_SEQ_SHIFT 28 265 #define RHF_RCV_SEQ_MASK 0xfull 266 #define RHF_RCV_SEQ_SMASK (RHF_RCV_SEQ_MASK << RHF_RCV_SEQ_SHIFT) 267 268 #define RHF_EGR_OFFSET_SHIFT 32 269 #define RHF_EGR_OFFSET_MASK 0xfffull 270 #define RHF_EGR_OFFSET_SMASK (RHF_EGR_OFFSET_MASK << RHF_EGR_OFFSET_SHIFT) 271 #define RHF_HDRQ_OFFSET_SHIFT 44 272 #define RHF_HDRQ_OFFSET_MASK 0x1ffull 273 #define RHF_HDRQ_OFFSET_SMASK (RHF_HDRQ_OFFSET_MASK << RHF_HDRQ_OFFSET_SHIFT) 274 #define RHF_K_HDR_LEN_ERR (0x1ull << 53) 275 #define RHF_DC_UNC_ERR (0x1ull << 54) 276 #define RHF_DC_ERR (0x1ull << 55) 277 #define RHF_RCV_TYPE_ERR_SHIFT 56 278 #define RHF_RCV_TYPE_ERR_MASK 0x7ul 279 #define RHF_RCV_TYPE_ERR_SMASK (RHF_RCV_TYPE_ERR_MASK << RHF_RCV_TYPE_ERR_SHIFT) 280 #define RHF_TID_ERR (0x1ull << 59) 281 #define RHF_LEN_ERR (0x1ull << 60) 282 #define RHF_ECC_ERR (0x1ull << 61) 283 #define RHF_RESERVED (0x1ull << 62) 284 #define RHF_ICRC_ERR (0x1ull << 63) 285 286 #define RHF_ERROR_SMASK 0xffe0000000000000ull /* bits 63:53 */ 287 288 /* RHF receive types */ 289 #define RHF_RCV_TYPE_EXPECTED 0 290 #define RHF_RCV_TYPE_EAGER 1 291 #define RHF_RCV_TYPE_IB 2 /* normal IB, IB Raw, or IPv6 */ 292 #define RHF_RCV_TYPE_ERROR 3 293 #define RHF_RCV_TYPE_BYPASS 4 294 #define RHF_RCV_TYPE_INVALID5 5 295 #define RHF_RCV_TYPE_INVALID6 6 296 #define RHF_RCV_TYPE_INVALID7 7 297 298 /* RHF receive type error - expected packet errors */ 299 #define RHF_RTE_EXPECTED_FLOW_SEQ_ERR 0x2 300 #define RHF_RTE_EXPECTED_FLOW_GEN_ERR 0x4 301 302 /* RHF receive type error - eager packet errors */ 303 #define RHF_RTE_EAGER_NO_ERR 0x0 304 305 /* RHF receive type error - IB packet errors */ 306 #define RHF_RTE_IB_NO_ERR 0x0 307 308 /* RHF receive type error - error packet errors */ 309 #define RHF_RTE_ERROR_NO_ERR 0x0 310 #define RHF_RTE_ERROR_OP_CODE_ERR 0x1 311 #define RHF_RTE_ERROR_KHDR_MIN_LEN_ERR 0x2 312 #define RHF_RTE_ERROR_KHDR_HCRC_ERR 0x3 313 #define RHF_RTE_ERROR_KHDR_KVER_ERR 0x4 314 #define RHF_RTE_ERROR_CONTEXT_ERR 0x5 315 #define RHF_RTE_ERROR_KHDR_TID_ERR 0x6 316 317 /* RHF receive type error - bypass packet errors */ 318 #define RHF_RTE_BYPASS_NO_ERR 0x0 319 320 /* MAX RcvSEQ */ 321 #define RHF_MAX_SEQ 13 322 323 /* IB - LRH header constants */ 324 #define HFI1_LRH_GRH 0x0003 /* 1. word of IB LRH - next header: GRH */ 325 #define HFI1_LRH_BTH 0x0002 /* 1. word of IB LRH - next header: BTH */ 326 327 /* misc. */ 328 #define SC15_PACKET 0xF 329 #define SIZE_OF_CRC 1 330 #define SIZE_OF_LT 1 331 #define MAX_16B_PADDING 12 /* CRC = 4, LT = 1, Pad = 0 to 7 bytes */ 332 333 #define LIM_MGMT_P_KEY 0x7FFF 334 #define FULL_MGMT_P_KEY 0xFFFF 335 336 #define DEFAULT_P_KEY LIM_MGMT_P_KEY 337 338 #define HFI1_PSM_IOC_BASE_SEQ 0x0 339 340 /* Number of BTH.PSN bits used for sequence number in expected rcvs */ 341 #define HFI1_KDETH_BTH_SEQ_SHIFT 11 342 #define HFI1_KDETH_BTH_SEQ_MASK (BIT(HFI1_KDETH_BTH_SEQ_SHIFT) - 1) 343 344 static inline __u64 rhf_to_cpu(const __le32 *rbuf) 345 { 346 return __le64_to_cpu(*((__le64 *)rbuf)); 347 } 348 349 static inline u64 rhf_err_flags(u64 rhf) 350 { 351 return rhf & RHF_ERROR_SMASK; 352 } 353 354 static inline u32 rhf_rcv_type(u64 rhf) 355 { 356 return (rhf >> RHF_RCV_TYPE_SHIFT) & RHF_RCV_TYPE_MASK; 357 } 358 359 static inline u32 rhf_rcv_type_err(u64 rhf) 360 { 361 return (rhf >> RHF_RCV_TYPE_ERR_SHIFT) & RHF_RCV_TYPE_ERR_MASK; 362 } 363 364 /* return size is in bytes, not DWORDs */ 365 static inline u32 rhf_pkt_len(u64 rhf) 366 { 367 return ((rhf & RHF_PKT_LEN_SMASK) >> RHF_PKT_LEN_SHIFT) << 2; 368 } 369 370 static inline u32 rhf_egr_index(u64 rhf) 371 { 372 return (rhf >> RHF_EGR_INDEX_SHIFT) & RHF_EGR_INDEX_MASK; 373 } 374 375 static inline u32 rhf_rcv_seq(u64 rhf) 376 { 377 return (rhf >> RHF_RCV_SEQ_SHIFT) & RHF_RCV_SEQ_MASK; 378 } 379 380 /* returned offset is in DWORDS */ 381 static inline u32 rhf_hdrq_offset(u64 rhf) 382 { 383 return (rhf >> RHF_HDRQ_OFFSET_SHIFT) & RHF_HDRQ_OFFSET_MASK; 384 } 385 386 static inline u64 rhf_use_egr_bfr(u64 rhf) 387 { 388 return rhf & RHF_USE_EGR_BFR_SMASK; 389 } 390 391 static inline u64 rhf_dc_info(u64 rhf) 392 { 393 return rhf & RHF_DC_INFO_SMASK; 394 } 395 396 static inline u32 rhf_egr_buf_offset(u64 rhf) 397 { 398 return (rhf >> RHF_EGR_OFFSET_SHIFT) & RHF_EGR_OFFSET_MASK; 399 } 400 #endif /* _COMMON_H */ 401