ceph/src/seastar/dpdk/drivers/net/nfp/nfpcore/nfp_target.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2018 Netronome Systems, Inc.
   3  * All rights reserved.
   4  */
   5
   6 #ifndef NFP_TARGET_H
   7 #define NFP_TARGET_H
   8
   9 #include "nfp-common/nfp_resid.h"
  10 #include "nfp-common/nfp_cppat.h"
  11 #include "nfp-common/nfp_platform.h"
  12 #include "nfp_cpp.h"
  13
  14 #define P32 1
  15 #define P64 2
  16
  17 #define PUSHPULL(_pull, _push) (((_pull) << 4) | ((_push) << 0))
  18
  19 #ifndef NFP_ERRNO
  20 #include <errno.h>
  21 #define NFP_ERRNO(x)    (errno = (x), -1)
  22 #endif
  23
  24 static inline int
  25 pushpull_width(int pp)
  26 {
  27         pp &= 0xf;
  28
  29         if (pp == 0)
  30                 return NFP_ERRNO(EINVAL);
  31         return (2 << pp);
  32 }
  33
  34 #define PUSH_WIDTH(_pushpull)      pushpull_width((_pushpull) >> 0)
  35 #define PULL_WIDTH(_pushpull)      pushpull_width((_pushpull) >> 4)
  36
  37 static inline int
  38 target_rw(uint32_t cpp_id, int pp, int start, int len)
  39 {
  40         int island = NFP_CPP_ID_ISLAND_of(cpp_id);
  41
  42         if (island && (island < start || island > (start + len)))
  43                 return NFP_ERRNO(EINVAL);
  44
  45         switch (cpp_id & NFP_CPP_ID(0, ~0, ~0)) {
  46         case NFP_CPP_ID(0, 0, 0):
  47                 return PUSHPULL(0, pp);
  48         case NFP_CPP_ID(0, 1, 0):
  49                 return PUSHPULL(pp, 0);
  50         case NFP_CPP_ID(0, NFP_CPP_ACTION_RW, 0):
  51                 return PUSHPULL(pp, pp);
  52         default:
  53                 return NFP_ERRNO(EINVAL);
  54         }
  55 }
  56
  57 static inline int
  58 nfp6000_nbi_dma(uint32_t cpp_id)
  59 {
  60         switch (cpp_id & NFP_CPP_ID(0, ~0, ~0)) {
  61         case NFP_CPP_ID(0, 0, 0): /* ReadNbiDma */
  62                 return PUSHPULL(0, P64);
  63         case NFP_CPP_ID(0, 1, 0): /* WriteNbiDma */
  64                 return PUSHPULL(P64, 0);
  65         case NFP_CPP_ID(0, NFP_CPP_ACTION_RW, 0):
  66                 return PUSHPULL(P64, P64);
  67         default:
  68                 return NFP_ERRNO(EINVAL);
  69         }
  70 }
  71
  72 static inline int
  73 nfp6000_nbi_stats(uint32_t cpp_id)
  74 {
  75         switch (cpp_id & NFP_CPP_ID(0, ~0, ~0)) {
  76         case NFP_CPP_ID(0, 0, 0): /* ReadNbiStats */
  77                 return PUSHPULL(0, P64);
  78         case NFP_CPP_ID(0, 1, 0): /* WriteNbiStats */
  79                 return PUSHPULL(P64, 0);
  80         case NFP_CPP_ID(0, NFP_CPP_ACTION_RW, 0):
  81                 return PUSHPULL(P64, P64);
  82         default:
  83                 return NFP_ERRNO(EINVAL);
  84         }
  85 }
  86
  87 static inline int
  88 nfp6000_nbi_tm(uint32_t cpp_id)
  89 {
  90         switch (cpp_id & NFP_CPP_ID(0, ~0, ~0)) {
  91         case NFP_CPP_ID(0, 0, 0): /* ReadNbiTM */
  92                 return PUSHPULL(0, P64);
  93         case NFP_CPP_ID(0, 1, 0):  /* WriteNbiTM */
  94                 return PUSHPULL(P64, 0);
  95         case NFP_CPP_ID(0, NFP_CPP_ACTION_RW, 0):
  96                 return PUSHPULL(P64, P64);
  97         default:
  98                 return NFP_ERRNO(EINVAL);
  99         }
 100 }
 101
 102 static inline int
 103 nfp6000_nbi_ppc(uint32_t cpp_id)
 104 {
 105         switch (cpp_id & NFP_CPP_ID(0, ~0, ~0)) {
 106         case NFP_CPP_ID(0, 0, 0): /* ReadNbiPreclassifier */
 107                 return PUSHPULL(0, P64);
 108         case NFP_CPP_ID(0, 1, 0): /* WriteNbiPreclassifier */
 109                 return PUSHPULL(P64, 0);
 110         case NFP_CPP_ID(0, NFP_CPP_ACTION_RW, 0):
 111                 return PUSHPULL(P64, P64);
 112         default:
 113                 return NFP_ERRNO(EINVAL);
 114         }
 115 }
 116
 117 static inline int
 118 nfp6000_nbi(uint32_t cpp_id, uint64_t address)
 119 {
 120         int island = NFP_CPP_ID_ISLAND_of(cpp_id);
 121         uint64_t rel_addr = address & 0x3fFFFF;
 122
 123         if (island && (island < 8 || island > 9))
 124                 return NFP_ERRNO(EINVAL);
 125
 126         if (rel_addr < (1 << 20))
 127                 return nfp6000_nbi_dma(cpp_id);
 128         if (rel_addr < (2 << 20))
 129                 return nfp6000_nbi_stats(cpp_id);
 130         if (rel_addr < (3 << 20))
 131                 return nfp6000_nbi_tm(cpp_id);
 132         return nfp6000_nbi_ppc(cpp_id);
 133 }
 134
 135 /*
 136  * This structure ONLY includes items that can be done with a read or write of
 137  * 32-bit or 64-bit words. All others are not listed.
 138  */
 139 static inline int
 140 nfp6000_mu_common(uint32_t cpp_id)
 141 {
 142         switch (cpp_id & NFP_CPP_ID(0, ~0, ~0)) {
 143         case NFP_CPP_ID(0, NFP_CPP_ACTION_RW, 0): /* read_be/write_be */
 144                 return PUSHPULL(P64, P64);
 145         case NFP_CPP_ID(0, NFP_CPP_ACTION_RW, 1): /* read_le/write_le */
 146                 return PUSHPULL(P64, P64);
 147         case NFP_CPP_ID(0, NFP_CPP_ACTION_RW, 2): /* {read/write}_swap_be */
 148                 return PUSHPULL(P64, P64);
 149         case NFP_CPP_ID(0, NFP_CPP_ACTION_RW, 3): /* {read/write}_swap_le */
 150                 return PUSHPULL(P64, P64);
 151         case NFP_CPP_ID(0, 0, 0): /* read_be */
 152                 return PUSHPULL(0, P64);
 153         case NFP_CPP_ID(0, 0, 1): /* read_le */
 154                 return PUSHPULL(0, P64);
 155         case NFP_CPP_ID(0, 0, 2): /* read_swap_be */
 156                 return PUSHPULL(0, P64);
 157         case NFP_CPP_ID(0, 0, 3): /* read_swap_le */
 158                 return PUSHPULL(0, P64);
 159         case NFP_CPP_ID(0, 1, 0): /* write_be */
 160                 return PUSHPULL(P64, 0);
 161         case NFP_CPP_ID(0, 1, 1): /* write_le */
 162                 return PUSHPULL(P64, 0);
 163         case NFP_CPP_ID(0, 1, 2): /* write_swap_be */
 164                 return PUSHPULL(P64, 0);
 165         case NFP_CPP_ID(0, 1, 3): /* write_swap_le */
 166                 return PUSHPULL(P64, 0);
 167         case NFP_CPP_ID(0, 3, 0): /* atomic_read */
 168                 return PUSHPULL(0, P32);
 169         case NFP_CPP_ID(0, 3, 2): /* mask_compare_write */
 170                 return PUSHPULL(P32, 0);
 171         case NFP_CPP_ID(0, 4, 0): /* atomic_write */
 172                 return PUSHPULL(P32, 0);
 173         case NFP_CPP_ID(0, 4, 2): /* atomic_write_imm */
 174                 return PUSHPULL(0, 0);
 175         case NFP_CPP_ID(0, 4, 3): /* swap_imm */
 176                 return PUSHPULL(0, P32);
 177         case NFP_CPP_ID(0, 5, 0): /* set */
 178                 return PUSHPULL(P32, 0);
 179         case NFP_CPP_ID(0, 5, 3): /* test_set_imm */
 180                 return PUSHPULL(0, P32);
 181         case NFP_CPP_ID(0, 6, 0): /* clr */
 182                 return PUSHPULL(P32, 0);
 183         case NFP_CPP_ID(0, 6, 3): /* test_clr_imm */
 184                 return PUSHPULL(0, P32);
 185         case NFP_CPP_ID(0, 7, 0): /* add */
 186                 return PUSHPULL(P32, 0);
 187         case NFP_CPP_ID(0, 7, 3): /* test_add_imm */
 188                 return PUSHPULL(0, P32);
 189         case NFP_CPP_ID(0, 8, 0): /* addsat */
 190                 return PUSHPULL(P32, 0);
 191         case NFP_CPP_ID(0, 8, 3): /* test_subsat_imm */
 192                 return PUSHPULL(0, P32);
 193         case NFP_CPP_ID(0, 9, 0): /* sub */
 194                 return PUSHPULL(P32, 0);
 195         case NFP_CPP_ID(0, 9, 3): /* test_sub_imm */
 196                 return PUSHPULL(0, P32);
 197         case NFP_CPP_ID(0, 10, 0): /* subsat */
 198                 return PUSHPULL(P32, 0);
 199         case NFP_CPP_ID(0, 10, 3): /* test_subsat_imm */
 200                 return PUSHPULL(0, P32);
 201         case NFP_CPP_ID(0, 13, 0): /* microq128_get */
 202                 return PUSHPULL(0, P32);
 203         case NFP_CPP_ID(0, 13, 1): /* microq128_pop */
 204                 return PUSHPULL(0, P32);
 205         case NFP_CPP_ID(0, 13, 2): /* microq128_put */
 206                 return PUSHPULL(P32, 0);
 207         case NFP_CPP_ID(0, 15, 0): /* xor */
 208                 return PUSHPULL(P32, 0);
 209         case NFP_CPP_ID(0, 15, 3): /* test_xor_imm */
 210                 return PUSHPULL(0, P32);
 211         case NFP_CPP_ID(0, 28, 0): /* read32_be */
 212                 return PUSHPULL(0, P32);
 213         case NFP_CPP_ID(0, 28, 1): /* read32_le */
 214                 return PUSHPULL(0, P32);
 215         case NFP_CPP_ID(0, 28, 2): /* read32_swap_be */
 216                 return PUSHPULL(0, P32);
 217         case NFP_CPP_ID(0, 28, 3): /* read32_swap_le */
 218                 return PUSHPULL(0, P32);
 219         case NFP_CPP_ID(0, 31, 0): /* write32_be */
 220                 return PUSHPULL(P32, 0);
 221         case NFP_CPP_ID(0, 31, 1): /* write32_le */
 222                 return PUSHPULL(P32, 0);
 223         case NFP_CPP_ID(0, 31, 2): /* write32_swap_be */
 224                 return PUSHPULL(P32, 0);
 225         case NFP_CPP_ID(0, 31, 3): /* write32_swap_le */
 226                 return PUSHPULL(P32, 0);
 227         default:
 228                 return NFP_ERRNO(EINVAL);
 229         }
 230 }
 231
 232 static inline int
 233 nfp6000_mu_ctm(uint32_t cpp_id)
 234 {
 235         switch (cpp_id & NFP_CPP_ID(0, ~0, ~0)) {
 236         case NFP_CPP_ID(0, 16, 1): /* packet_read_packet_status */
 237                 return PUSHPULL(0, P32);
 238         default:
 239                 return nfp6000_mu_common(cpp_id);
 240         }
 241 }
 242
 243 static inline int
 244 nfp6000_mu_emu(uint32_t cpp_id)
 245 {
 246         switch (cpp_id & NFP_CPP_ID(0, ~0, ~0)) {
 247         case NFP_CPP_ID(0, 18, 0): /* read_queue */
 248                 return PUSHPULL(0, P32);
 249         case NFP_CPP_ID(0, 18, 1): /* read_queue_ring */
 250                 return PUSHPULL(0, P32);
 251         case NFP_CPP_ID(0, 18, 2): /* write_queue */
 252                 return PUSHPULL(P32, 0);
 253         case NFP_CPP_ID(0, 18, 3): /* write_queue_ring */
 254                 return PUSHPULL(P32, 0);
 255         case NFP_CPP_ID(0, 20, 2): /* journal */
 256                 return PUSHPULL(P32, 0);
 257         case NFP_CPP_ID(0, 21, 0): /* get */
 258                 return PUSHPULL(0, P32);
 259         case NFP_CPP_ID(0, 21, 1): /* get_eop */
 260                 return PUSHPULL(0, P32);
 261         case NFP_CPP_ID(0, 21, 2): /* get_freely */
 262                 return PUSHPULL(0, P32);
 263         case NFP_CPP_ID(0, 22, 0): /* pop */
 264                 return PUSHPULL(0, P32);
 265         case NFP_CPP_ID(0, 22, 1): /* pop_eop */
 266                 return PUSHPULL(0, P32);
 267         case NFP_CPP_ID(0, 22, 2): /* pop_freely */
 268                 return PUSHPULL(0, P32);
 269         default:
 270                 return nfp6000_mu_common(cpp_id);
 271         }
 272 }
 273
 274 static inline int
 275 nfp6000_mu_imu(uint32_t cpp_id)
 276 {
 277         return nfp6000_mu_common(cpp_id);
 278 }
 279
 280 static inline int
 281 nfp6000_mu(uint32_t cpp_id, uint64_t address)
 282 {
 283         int pp;
 284         int island = NFP_CPP_ID_ISLAND_of(cpp_id);
 285
 286         if (island == 0) {
 287                 if (address < 0x2000000000ULL)
 288                         pp = nfp6000_mu_ctm(cpp_id);
 289                 else if (address < 0x8000000000ULL)
 290                         pp = nfp6000_mu_emu(cpp_id);
 291                 else if (address < 0x9800000000ULL)
 292                         pp = nfp6000_mu_ctm(cpp_id);
 293                 else if (address < 0x9C00000000ULL)
 294                         pp = nfp6000_mu_emu(cpp_id);
 295                 else if (address < 0xA000000000ULL)
 296                         pp = nfp6000_mu_imu(cpp_id);
 297                 else
 298                         pp = nfp6000_mu_ctm(cpp_id);
 299         } else if (island >= 24 && island <= 27) {
 300                 pp = nfp6000_mu_emu(cpp_id);
 301         } else if (island >= 28 && island <= 31) {
 302                 pp = nfp6000_mu_imu(cpp_id);
 303         } else if (island == 1 ||
 304                    (island >= 4 && island <= 7) ||
 305                    (island >= 12 && island <= 13) ||
 306                    (island >= 32 && island <= 47) ||
 307                    (island >= 48 && island <= 51)) {
 308                 pp = nfp6000_mu_ctm(cpp_id);
 309         } else {
 310                 pp = NFP_ERRNO(EINVAL);
 311         }
 312
 313         return pp;
 314 }
 315
 316 static inline int
 317 nfp6000_ila(uint32_t cpp_id)
 318 {
 319         int island = NFP_CPP_ID_ISLAND_of(cpp_id);
 320
 321         if (island && (island < 48 || island > 51))
 322                 return NFP_ERRNO(EINVAL);
 323
 324         switch (cpp_id & NFP_CPP_ID(0, ~0, ~0)) {
 325         case NFP_CPP_ID(0, 0, 1): /* read_check_error */
 326                 return PUSHPULL(0, P32);
 327         case NFP_CPP_ID(0, 2, 0): /* read_int */
 328                 return PUSHPULL(0, P32);
 329         case NFP_CPP_ID(0, 3, 0): /* write_int */
 330                 return PUSHPULL(P32, 0);
 331         default:
 332                 return target_rw(cpp_id, P32, 48, 4);
 333         }
 334 }
 335
 336 static inline int
 337 nfp6000_pci(uint32_t cpp_id)
 338 {
 339         int island = NFP_CPP_ID_ISLAND_of(cpp_id);
 340
 341         if (island && (island < 4 || island > 7))
 342                 return NFP_ERRNO(EINVAL);
 343
 344         switch (cpp_id & NFP_CPP_ID(0, ~0, ~0)) {
 345         case NFP_CPP_ID(0, 2, 0):
 346                 return PUSHPULL(0, P32);
 347         case NFP_CPP_ID(0, 3, 0):
 348                 return PUSHPULL(P32, 0);
 349         default:
 350                 return target_rw(cpp_id, P32, 4, 4);
 351         }
 352 }
 353
 354 static inline int
 355 nfp6000_crypto(uint32_t cpp_id)
 356 {
 357         int island = NFP_CPP_ID_ISLAND_of(cpp_id);
 358
 359         if (island && (island < 12 || island > 15))
 360                 return NFP_ERRNO(EINVAL);
 361
 362         switch (cpp_id & NFP_CPP_ID(0, ~0, ~0)) {
 363         case NFP_CPP_ID(0, 2, 0):
 364                 return PUSHPULL(P64, 0);
 365         default:
 366                 return target_rw(cpp_id, P64, 12, 4);
 367         }
 368 }
 369
 370 static inline int
 371 nfp6000_cap_xpb(uint32_t cpp_id)
 372 {
 373         int island = NFP_CPP_ID_ISLAND_of(cpp_id);
 374
 375         if (island && (island < 1 || island > 63))
 376                 return NFP_ERRNO(EINVAL);
 377
 378         switch (cpp_id & NFP_CPP_ID(0, ~0, ~0)) {
 379         case NFP_CPP_ID(0, 0, 1): /* RingGet */
 380                 return PUSHPULL(0, P32);
 381         case NFP_CPP_ID(0, 0, 2): /* Interthread Signal */
 382                 return PUSHPULL(P32, 0);
 383         case NFP_CPP_ID(0, 1, 1): /* RingPut */
 384                 return PUSHPULL(P32, 0);
 385         case NFP_CPP_ID(0, 1, 2): /* CTNNWr */
 386                 return PUSHPULL(P32, 0);
 387         case NFP_CPP_ID(0, 2, 0): /* ReflectRd, signal none */
 388                 return PUSHPULL(0, P32);
 389         case NFP_CPP_ID(0, 2, 1): /* ReflectRd, signal self */
 390                 return PUSHPULL(0, P32);
 391         case NFP_CPP_ID(0, 2, 2): /* ReflectRd, signal remote */
 392                 return PUSHPULL(0, P32);
 393         case NFP_CPP_ID(0, 2, 3): /* ReflectRd, signal both */
 394                 return PUSHPULL(0, P32);
 395         case NFP_CPP_ID(0, 3, 0): /* ReflectWr, signal none */
 396                 return PUSHPULL(P32, 0);
 397         case NFP_CPP_ID(0, 3, 1): /* ReflectWr, signal self */
 398                 return PUSHPULL(P32, 0);
 399         case NFP_CPP_ID(0, 3, 2): /* ReflectWr, signal remote */
 400                 return PUSHPULL(P32, 0);
 401         case NFP_CPP_ID(0, 3, 3): /* ReflectWr, signal both */
 402                 return PUSHPULL(P32, 0);
 403         case NFP_CPP_ID(0, NFP_CPP_ACTION_RW, 1):
 404                 return PUSHPULL(P32, P32);
 405         default:
 406                 return target_rw(cpp_id, P32, 1, 63);
 407         }
 408 }
 409
 410 static inline int
 411 nfp6000_cls(uint32_t cpp_id)
 412 {
 413         int island = NFP_CPP_ID_ISLAND_of(cpp_id);
 414
 415         if (island && (island < 1 || island > 63))
 416                 return NFP_ERRNO(EINVAL);
 417
 418         switch (cpp_id & NFP_CPP_ID(0, ~0, ~0)) {
 419         case NFP_CPP_ID(0, 0, 3): /* xor */
 420                 return PUSHPULL(P32, 0);
 421         case NFP_CPP_ID(0, 2, 0): /* set */
 422                 return PUSHPULL(P32, 0);
 423         case NFP_CPP_ID(0, 2, 1): /* clr */
 424                 return PUSHPULL(P32, 0);
 425         case NFP_CPP_ID(0, 4, 0): /* add */
 426                 return PUSHPULL(P32, 0);
 427         case NFP_CPP_ID(0, 4, 1): /* add64 */
 428                 return PUSHPULL(P32, 0);
 429         case NFP_CPP_ID(0, 6, 0): /* sub */
 430                 return PUSHPULL(P32, 0);
 431         case NFP_CPP_ID(0, 6, 1): /* sub64 */
 432                 return PUSHPULL(P32, 0);
 433         case NFP_CPP_ID(0, 6, 2): /* subsat */
 434                 return PUSHPULL(P32, 0);
 435         case NFP_CPP_ID(0, 8, 2): /* hash_mask */
 436                 return PUSHPULL(P32, 0);
 437         case NFP_CPP_ID(0, 8, 3): /* hash_clear */
 438                 return PUSHPULL(P32, 0);
 439         case NFP_CPP_ID(0, 9, 0): /* ring_get */
 440                 return PUSHPULL(0, P32);
 441         case NFP_CPP_ID(0, 9, 1): /* ring_pop */
 442                 return PUSHPULL(0, P32);
 443         case NFP_CPP_ID(0, 9, 2): /* ring_get_freely */
 444                 return PUSHPULL(0, P32);
 445         case NFP_CPP_ID(0, 9, 3): /* ring_pop_freely */
 446                 return PUSHPULL(0, P32);
 447         case NFP_CPP_ID(0, 10, 0): /* ring_put */
 448                 return PUSHPULL(P32, 0);
 449         case NFP_CPP_ID(0, 10, 2): /* ring_journal */
 450                 return PUSHPULL(P32, 0);
 451         case NFP_CPP_ID(0, 14, 0): /* reflect_write_sig_local */
 452                 return PUSHPULL(P32, 0);
 453         case NFP_CPP_ID(0, 15, 1):  /* reflect_read_sig_local */
 454                 return PUSHPULL(0, P32);
 455         case NFP_CPP_ID(0, 17, 2): /* statistic */
 456                 return PUSHPULL(P32, 0);
 457         case NFP_CPP_ID(0, 24, 0): /* ring_read */
 458                 return PUSHPULL(0, P32);
 459         case NFP_CPP_ID(0, 24, 1): /* ring_write */
 460                 return PUSHPULL(P32, 0);
 461         case NFP_CPP_ID(0, 25, 0): /* ring_workq_add_thread */
 462                 return PUSHPULL(0, P32);
 463         case NFP_CPP_ID(0, 25, 1): /* ring_workq_add_work */
 464                 return PUSHPULL(P32, 0);
 465         default:
 466                 return target_rw(cpp_id, P32, 0, 64);
 467         }
 468 }
 469
 470 static inline int
 471 nfp6000_target_pushpull(uint32_t cpp_id, uint64_t address)
 472 {
 473         switch (NFP_CPP_ID_TARGET_of(cpp_id)) {
 474         case NFP6000_CPPTGT_NBI:
 475                 return nfp6000_nbi(cpp_id, address);
 476         case NFP6000_CPPTGT_VQDR:
 477                 return target_rw(cpp_id, P32, 24, 4);
 478         case NFP6000_CPPTGT_ILA:
 479                 return nfp6000_ila(cpp_id);
 480         case NFP6000_CPPTGT_MU:
 481                 return nfp6000_mu(cpp_id, address);
 482         case NFP6000_CPPTGT_PCIE:
 483                 return nfp6000_pci(cpp_id);
 484         case NFP6000_CPPTGT_ARM:
 485                 if (address < 0x10000)
 486                         return target_rw(cpp_id, P64, 1, 1);
 487                 else
 488                         return target_rw(cpp_id, P32, 1, 1);
 489         case NFP6000_CPPTGT_CRYPTO:
 490                 return nfp6000_crypto(cpp_id);
 491         case NFP6000_CPPTGT_CTXPB:
 492                 return nfp6000_cap_xpb(cpp_id);
 493         case NFP6000_CPPTGT_CLS:
 494                 return nfp6000_cls(cpp_id);
 495         case 0:
 496                 return target_rw(cpp_id, P32, 4, 4);
 497         default:
 498                 return NFP_ERRNO(EINVAL);
 499         }
 500 }
 501
 502 static inline int
 503 nfp_target_pushpull_width(int pp, int write_not_read)
 504 {
 505         if (pp < 0)
 506                 return pp;
 507
 508         if (write_not_read)
 509                 return PULL_WIDTH(pp);
 510         else
 511                 return PUSH_WIDTH(pp);
 512 }
 513
 514 static inline int
 515 nfp6000_target_action_width(uint32_t cpp_id, uint64_t address,
 516                             int write_not_read)
 517 {
 518         int pp;
 519
 520         pp = nfp6000_target_pushpull(cpp_id, address);
 521
 522         return nfp_target_pushpull_width(pp, write_not_read);
 523 }
 524
 525 static inline int
 526 nfp_target_action_width(uint32_t model, uint32_t cpp_id, uint64_t address,
 527                         int write_not_read)
 528 {
 529         if (NFP_CPP_MODEL_IS_6000(model)) {
 530                 return nfp6000_target_action_width(cpp_id, address,
 531                                                    write_not_read);
 532         } else {
 533                 return NFP_ERRNO(EINVAL);
 534         }
 535 }
 536
 537 static inline int
 538 nfp_target_cpp(uint32_t cpp_island_id, uint64_t cpp_island_address,
 539                uint32_t *cpp_target_id, uint64_t *cpp_target_address,
 540                const uint32_t *imb_table)
 541 {
 542         int err;
 543         int island = NFP_CPP_ID_ISLAND_of(cpp_island_id);
 544         int target = NFP_CPP_ID_TARGET_of(cpp_island_id);
 545         uint32_t imb;
 546
 547         if (target < 0 || target >= 16)
 548                 return NFP_ERRNO(EINVAL);
 549
 550         if (island == 0) {
 551                 /* Already translated */
 552                 *cpp_target_id = cpp_island_id;
 553                 *cpp_target_address = cpp_island_address;
 554                 return 0;
 555         }
 556
 557         if (!imb_table) {
 558                 /* CPP + Island only allowed on systems with IMB tables */
 559                 return NFP_ERRNO(EINVAL);
 560         }
 561
 562         imb = imb_table[target];
 563
 564         *cpp_target_address = cpp_island_address;
 565         err = _nfp6000_cppat_addr_encode(cpp_target_address, island, target,
 566                                          ((imb >> 13) & 7),
 567                                          ((imb >> 12) & 1),
 568                                          ((imb >> 6) & 0x3f),
 569                                          ((imb >> 0) & 0x3f));
 570         if (err == 0) {
 571                 *cpp_target_id =
 572                     NFP_CPP_ID(target, NFP_CPP_ID_ACTION_of(cpp_island_id),
 573                                NFP_CPP_ID_TOKEN_of(cpp_island_id));
 574         }
 575
 576         return err;
 577 }
 578
 579 #endif /* NFP_TARGET_H */