ceph/src/seastar/dpdk/drivers/mempool/octeontx/octeontx_fpavf.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2017 Cavium, Inc
   3  */
   4
   5 #include <stdlib.h>
   6 #include <string.h>
   7 #include <stdbool.h>
   8 #include <stdio.h>
   9 #include <unistd.h>
  10 #include <fcntl.h>
  11 #include <errno.h>
  12 #include <sys/mman.h>
  13
  14 #include <rte_atomic.h>
  15 #include <rte_eal.h>
  16 #include <rte_bus_pci.h>
  17 #include <rte_errno.h>
  18 #include <rte_memory.h>
  19 #include <rte_malloc.h>
  20 #include <rte_spinlock.h>
  21 #include <rte_mbuf.h>
  22
  23 #include "octeontx_mbox.h"
  24 #include "octeontx_fpavf.h"
  25
  26 /* FPA Mbox Message */
  27 #define IDENTIFY                0x0
  28
  29 #define FPA_CONFIGSET           0x1
  30 #define FPA_CONFIGGET           0x2
  31 #define FPA_START_COUNT         0x3
  32 #define FPA_STOP_COUNT          0x4
  33 #define FPA_ATTACHAURA          0x5
  34 #define FPA_DETACHAURA          0x6
  35 #define FPA_SETAURALVL          0x7
  36 #define FPA_GETAURALVL          0x8
  37
  38 #define FPA_COPROC              0x1
  39
  40 /* fpa mbox struct */
  41 struct octeontx_mbox_fpa_cfg {
  42         int             aid;
  43         uint64_t        pool_cfg;
  44         uint64_t        pool_stack_base;
  45         uint64_t        pool_stack_end;
  46         uint64_t        aura_cfg;
  47 };
  48
  49 struct __attribute__((__packed__)) gen_req {
  50         uint32_t        value;
  51 };
  52
  53 struct __attribute__((__packed__)) idn_req {
  54         uint8_t domain_id;
  55 };
  56
  57 struct __attribute__((__packed__)) gen_resp {
  58         uint16_t        domain_id;
  59         uint16_t        vfid;
  60 };
  61
  62 struct __attribute__((__packed__)) dcfg_resp {
  63         uint8_t sso_count;
  64         uint8_t ssow_count;
  65         uint8_t fpa_count;
  66         uint8_t pko_count;
  67         uint8_t tim_count;
  68         uint8_t net_port_count;
  69         uint8_t virt_port_count;
  70 };
  71
  72 #define FPA_MAX_POOL    32
  73 #define FPA_PF_PAGE_SZ  4096
  74
  75 #define FPA_LN_SIZE     128
  76 #define FPA_ROUND_UP(x, size) \
  77         ((((unsigned long)(x)) + size-1) & (~(size-1)))
  78 #define FPA_OBJSZ_2_CACHE_LINE(sz)      (((sz) + RTE_CACHE_LINE_MASK) >> 7)
  79 #define FPA_CACHE_LINE_2_OBJSZ(sz)      ((sz) << 7)
  80
  81 #define POOL_ENA                        (0x1 << 0)
  82 #define POOL_DIS                        (0x0 << 0)
  83 #define POOL_SET_NAT_ALIGN              (0x1 << 1)
  84 #define POOL_DIS_NAT_ALIGN              (0x0 << 1)
  85 #define POOL_STYPE(x)                   (((x) & 0x1) << 2)
  86 #define POOL_LTYPE(x)                   (((x) & 0x3) << 3)
  87 #define POOL_BUF_OFFSET(x)              (((x) & 0x7fffULL) << 16)
  88 #define POOL_BUF_SIZE(x)                (((x) & 0x7ffULL) << 32)
  89
  90 struct fpavf_res {
  91         void            *pool_stack_base;
  92         void            *bar0;
  93         uint64_t        stack_ln_ptr;
  94         uint16_t        domain_id;
  95         uint16_t        vf_id;  /* gpool_id */
  96         uint16_t        sz128;  /* Block size in cache lines */
  97         bool            is_inuse;
  98 };
  99
 100 struct octeontx_fpadev {
 101         rte_spinlock_t lock;
 102         uint8_t total_gpool_cnt;
 103         struct fpavf_res pool[FPA_VF_MAX];
 104 };
 105
 106 static struct octeontx_fpadev fpadev;
 107
 108 int octeontx_logtype_fpavf;
 109 int octeontx_logtype_fpavf_mbox;
 110
 111 RTE_INIT(otx_pool_init_log)
 112 {
 113         octeontx_logtype_fpavf = rte_log_register("pmd.mempool.octeontx");
 114         if (octeontx_logtype_fpavf >= 0)
 115                 rte_log_set_level(octeontx_logtype_fpavf, RTE_LOG_NOTICE);
 116 }
 117
 118 /* lock is taken by caller */
 119 static int
 120 octeontx_fpa_gpool_alloc(unsigned int object_size)
 121 {
 122         struct fpavf_res *res = NULL;
 123         uint16_t gpool;
 124         unsigned int sz128;
 125
 126         sz128 = FPA_OBJSZ_2_CACHE_LINE(object_size);
 127
 128         for (gpool = 0; gpool < FPA_VF_MAX; gpool++) {
 129
 130                 /* Skip VF that is not mapped Or _inuse */
 131                 if ((fpadev.pool[gpool].bar0 == NULL) ||
 132                     (fpadev.pool[gpool].is_inuse == true))
 133                         continue;
 134
 135                 res = &fpadev.pool[gpool];
 136
 137                 RTE_ASSERT(res->domain_id != (uint16_t)~0);
 138                 RTE_ASSERT(res->vf_id != (uint16_t)~0);
 139                 RTE_ASSERT(res->stack_ln_ptr != 0);
 140
 141                 if (res->sz128 == 0) {
 142                         res->sz128 = sz128;
 143
 144                         fpavf_log_dbg("gpool %d blk_sz %d\n", gpool, sz128);
 145                         return gpool;
 146                 }
 147         }
 148
 149         return -ENOSPC;
 150 }
 151
 152 /* lock is taken by caller */
 153 static __rte_always_inline uintptr_t
 154 octeontx_fpa_gpool2handle(uint16_t gpool)
 155 {
 156         struct fpavf_res *res = NULL;
 157
 158         RTE_ASSERT(gpool < FPA_VF_MAX);
 159
 160         res = &fpadev.pool[gpool];
 161         return (uintptr_t)res->bar0 | gpool;
 162 }
 163
 164 static __rte_always_inline bool
 165 octeontx_fpa_handle_valid(uintptr_t handle)
 166 {
 167         struct fpavf_res *res = NULL;
 168         uint8_t gpool;
 169         int i;
 170         bool ret = false;
 171
 172         if (unlikely(!handle))
 173                 return ret;
 174
 175         /* get the gpool */
 176         gpool = octeontx_fpa_bufpool_gpool(handle);
 177
 178         /* get the bar address */
 179         handle &= ~(uint64_t)FPA_GPOOL_MASK;
 180         for (i = 0; i < FPA_VF_MAX; i++) {
 181                 if ((uintptr_t)fpadev.pool[i].bar0 != handle)
 182                         continue;
 183
 184                 /* validate gpool */
 185                 if (gpool != i)
 186                         return false;
 187
 188                 res = &fpadev.pool[i];
 189
 190                 if (res->sz128 == 0 || res->domain_id == (uint16_t)~0 ||
 191                     res->stack_ln_ptr == 0)
 192                         ret = false;
 193                 else
 194                         ret = true;
 195                 break;
 196         }
 197
 198         return ret;
 199 }
 200
 201 static int
 202 octeontx_fpapf_pool_setup(unsigned int gpool, unsigned int buf_size,
 203                           signed short buf_offset, unsigned int max_buf_count)
 204 {
 205         void *memptr = NULL;
 206         rte_iova_t phys_addr;
 207         unsigned int memsz;
 208         struct fpavf_res *fpa = NULL;
 209         uint64_t reg;
 210         struct octeontx_mbox_hdr hdr;
 211         struct dcfg_resp resp;
 212         struct octeontx_mbox_fpa_cfg cfg;
 213         int ret = -1;
 214
 215         fpa = &fpadev.pool[gpool];
 216         memsz = FPA_ROUND_UP(max_buf_count / fpa->stack_ln_ptr, FPA_LN_SIZE) *
 217                         FPA_LN_SIZE;
 218
 219         /* Round-up to page size */
 220         memsz = (memsz + FPA_PF_PAGE_SZ - 1) & ~(uintptr_t)(FPA_PF_PAGE_SZ-1);
 221         memptr = rte_malloc(NULL, memsz, RTE_CACHE_LINE_SIZE);
 222         if (memptr == NULL) {
 223                 ret = -ENOMEM;
 224                 goto err;
 225         }
 226
 227         /* Configure stack */
 228         fpa->pool_stack_base = memptr;
 229         phys_addr = rte_malloc_virt2iova(memptr);
 230
 231         buf_size /= FPA_LN_SIZE;
 232
 233         /* POOL setup */
 234         hdr.coproc = FPA_COPROC;
 235         hdr.msg = FPA_CONFIGSET;
 236         hdr.vfid = fpa->vf_id;
 237         hdr.res_code = 0;
 238
 239         buf_offset /= FPA_LN_SIZE;
 240         reg = POOL_BUF_SIZE(buf_size) | POOL_BUF_OFFSET(buf_offset) |
 241                 POOL_LTYPE(0x2) | POOL_STYPE(0) | POOL_SET_NAT_ALIGN |
 242                 POOL_ENA;
 243
 244         cfg.aid = FPA_AURA_IDX(gpool);
 245         cfg.pool_cfg = reg;
 246         cfg.pool_stack_base = phys_addr;
 247         cfg.pool_stack_end = phys_addr + memsz;
 248         cfg.aura_cfg = (1 << 9);
 249
 250         ret = octeontx_mbox_send(&hdr, &cfg,
 251                                         sizeof(struct octeontx_mbox_fpa_cfg),
 252                                         &resp, sizeof(resp));
 253         if (ret < 0) {
 254                 ret = -EACCES;
 255                 goto err;
 256         }
 257
 258         fpavf_log_dbg(" vfid %d gpool %d aid %d pool_cfg 0x%x pool_stack_base %" PRIx64 " pool_stack_end %" PRIx64" aura_cfg %" PRIx64 "\n",
 259                       fpa->vf_id, gpool, cfg.aid, (unsigned int)cfg.pool_cfg,
 260                       cfg.pool_stack_base, cfg.pool_stack_end, cfg.aura_cfg);
 261
 262         /* Now pool is in_use */
 263         fpa->is_inuse = true;
 264
 265 err:
 266         if (ret < 0)
 267                 rte_free(memptr);
 268
 269         return ret;
 270 }
 271
 272 static int
 273 octeontx_fpapf_pool_destroy(unsigned int gpool_index)
 274 {
 275         struct octeontx_mbox_hdr hdr;
 276         struct dcfg_resp resp;
 277         struct octeontx_mbox_fpa_cfg cfg;
 278         struct fpavf_res *fpa = NULL;
 279         int ret = -1;
 280
 281         fpa = &fpadev.pool[gpool_index];
 282
 283         hdr.coproc = FPA_COPROC;
 284         hdr.msg = FPA_CONFIGSET;
 285         hdr.vfid = fpa->vf_id;
 286         hdr.res_code = 0;
 287
 288         /* reset and free the pool */
 289         cfg.aid = 0;
 290         cfg.pool_cfg = 0;
 291         cfg.pool_stack_base = 0;
 292         cfg.pool_stack_end = 0;
 293         cfg.aura_cfg = 0;
 294
 295         ret = octeontx_mbox_send(&hdr, &cfg,
 296                                         sizeof(struct octeontx_mbox_fpa_cfg),
 297                                         &resp, sizeof(resp));
 298         if (ret < 0) {
 299                 ret = -EACCES;
 300                 goto err;
 301         }
 302
 303         ret = 0;
 304 err:
 305         /* anycase free pool stack memory */
 306         rte_free(fpa->pool_stack_base);
 307         fpa->pool_stack_base = NULL;
 308         return ret;
 309 }
 310
 311 static int
 312 octeontx_fpapf_aura_attach(unsigned int gpool_index)
 313 {
 314         struct octeontx_mbox_hdr hdr;
 315         struct dcfg_resp resp;
 316         struct octeontx_mbox_fpa_cfg cfg;
 317         int ret = 0;
 318
 319         if (gpool_index >= FPA_MAX_POOL) {
 320                 ret = -EINVAL;
 321                 goto err;
 322         }
 323         hdr.coproc = FPA_COPROC;
 324         hdr.msg = FPA_ATTACHAURA;
 325         hdr.vfid = gpool_index;
 326         hdr.res_code = 0;
 327         memset(&cfg, 0x0, sizeof(struct octeontx_mbox_fpa_cfg));
 328         cfg.aid = FPA_AURA_IDX(gpool_index);
 329
 330         ret = octeontx_mbox_send(&hdr, &cfg,
 331                                         sizeof(struct octeontx_mbox_fpa_cfg),
 332                                         &resp, sizeof(resp));
 333         if (ret < 0) {
 334                 fpavf_log_err("Could not attach fpa ");
 335                 fpavf_log_err("aura %d to pool %d. Err=%d. FuncErr=%d\n",
 336                               FPA_AURA_IDX(gpool_index), gpool_index, ret,
 337                               hdr.res_code);
 338                 ret = -EACCES;
 339                 goto err;
 340         }
 341 err:
 342         return ret;
 343 }
 344
 345 static int
 346 octeontx_fpapf_aura_detach(unsigned int gpool_index)
 347 {
 348         struct octeontx_mbox_fpa_cfg cfg = {0};
 349         struct octeontx_mbox_hdr hdr = {0};
 350         int ret = 0;
 351
 352         if (gpool_index >= FPA_MAX_POOL) {
 353                 ret = -EINVAL;
 354                 goto err;
 355         }
 356
 357         cfg.aid = FPA_AURA_IDX(gpool_index);
 358         hdr.coproc = FPA_COPROC;
 359         hdr.msg = FPA_DETACHAURA;
 360         hdr.vfid = gpool_index;
 361         ret = octeontx_mbox_send(&hdr, &cfg, sizeof(cfg), NULL, 0);
 362         if (ret < 0) {
 363                 fpavf_log_err("Couldn't detach FPA aura %d Err=%d FuncErr=%d\n",
 364                               FPA_AURA_IDX(gpool_index), ret,
 365                               hdr.res_code);
 366                 ret = -EINVAL;
 367         }
 368
 369 err:
 370         return ret;
 371 }
 372
 373 int
 374 octeontx_fpavf_pool_set_range(uintptr_t handle, unsigned long memsz,
 375                           void *memva, uint16_t gpool)
 376 {
 377         uint64_t va_end;
 378
 379         if (unlikely(!handle))
 380                 return -ENODEV;
 381
 382         va_end = (uintptr_t)memva + memsz;
 383         va_end &= ~RTE_CACHE_LINE_MASK;
 384
 385         /* VHPOOL setup */
 386         fpavf_write64((uintptr_t)memva,
 387                          (void *)((uintptr_t)handle +
 388                          FPA_VF_VHPOOL_START_ADDR(gpool)));
 389         fpavf_write64(va_end,
 390                          (void *)((uintptr_t)handle +
 391                          FPA_VF_VHPOOL_END_ADDR(gpool)));
 392         return 0;
 393 }
 394
 395 static int
 396 octeontx_fpapf_start_count(uint16_t gpool_index)
 397 {
 398         int ret = 0;
 399         struct octeontx_mbox_hdr hdr = {0};
 400
 401         if (gpool_index >= FPA_MAX_POOL) {
 402                 ret = -EINVAL;
 403                 goto err;
 404         }
 405
 406         hdr.coproc = FPA_COPROC;
 407         hdr.msg = FPA_START_COUNT;
 408         hdr.vfid = gpool_index;
 409         ret = octeontx_mbox_send(&hdr, NULL, 0, NULL, 0);
 410         if (ret < 0) {
 411                 fpavf_log_err("Could not start buffer counting for ");
 412                 fpavf_log_err("FPA pool %d. Err=%d. FuncErr=%d\n",
 413                               gpool_index, ret, hdr.res_code);
 414                 ret = -EINVAL;
 415                 goto err;
 416         }
 417
 418 err:
 419         return ret;
 420 }
 421
 422 static __rte_always_inline int
 423 octeontx_fpavf_free(unsigned int gpool)
 424 {
 425         int ret = 0;
 426
 427         if (gpool >= FPA_MAX_POOL) {
 428                 ret = -EINVAL;
 429                 goto err;
 430         }
 431
 432         /* Pool is free */
 433         fpadev.pool[gpool].is_inuse = false;
 434
 435 err:
 436         return ret;
 437 }
 438
 439 static __rte_always_inline int
 440 octeontx_gpool_free(uint16_t gpool)
 441 {
 442         if (fpadev.pool[gpool].sz128 != 0) {
 443                 fpadev.pool[gpool].sz128 = 0;
 444                 return 0;
 445         }
 446         return -EINVAL;
 447 }
 448
 449 /*
 450  * Return buffer size for a given pool
 451  */
 452 int
 453 octeontx_fpa_bufpool_block_size(uintptr_t handle)
 454 {
 455         struct fpavf_res *res = NULL;
 456         uint8_t gpool;
 457
 458         if (unlikely(!octeontx_fpa_handle_valid(handle)))
 459                 return -EINVAL;
 460
 461         /* get the gpool */
 462         gpool = octeontx_fpa_bufpool_gpool(handle);
 463         res = &fpadev.pool[gpool];
 464         return FPA_CACHE_LINE_2_OBJSZ(res->sz128);
 465 }
 466
 467 int
 468 octeontx_fpa_bufpool_free_count(uintptr_t handle)
 469 {
 470         uint64_t cnt, limit, avail;
 471         uint8_t gpool;
 472         uint16_t gaura;
 473         uintptr_t pool_bar;
 474
 475         if (unlikely(!octeontx_fpa_handle_valid(handle)))
 476                 return -EINVAL;
 477
 478         /* get the gpool */
 479         gpool = octeontx_fpa_bufpool_gpool(handle);
 480         /* get the aura */
 481         gaura = octeontx_fpa_bufpool_gaura(handle);
 482
 483         /* Get pool bar address from handle */
 484         pool_bar = handle & ~(uint64_t)FPA_GPOOL_MASK;
 485
 486         cnt = fpavf_read64((void *)((uintptr_t)pool_bar +
 487                                 FPA_VF_VHAURA_CNT(gaura)));
 488         limit = fpavf_read64((void *)((uintptr_t)pool_bar +
 489                                 FPA_VF_VHAURA_CNT_LIMIT(gaura)));
 490
 491         avail = fpavf_read64((void *)((uintptr_t)pool_bar +
 492                                 FPA_VF_VHPOOL_AVAILABLE(gpool)));
 493
 494         return RTE_MIN(avail, (limit - cnt));
 495 }
 496
 497 uintptr_t
 498 octeontx_fpa_bufpool_create(unsigned int object_size, unsigned int object_count,
 499                                 unsigned int buf_offset, int node_id)
 500 {
 501         unsigned int gpool;
 502         unsigned int gaura;
 503         uintptr_t gpool_handle;
 504         uintptr_t pool_bar;
 505         int res;
 506
 507         RTE_SET_USED(node_id);
 508         RTE_BUILD_BUG_ON(sizeof(struct rte_mbuf) > OCTEONTX_FPAVF_BUF_OFFSET);
 509
 510         object_size = RTE_CACHE_LINE_ROUNDUP(object_size);
 511         if (object_size > FPA_MAX_OBJ_SIZE) {
 512                 errno = EINVAL;
 513                 goto error_end;
 514         }
 515
 516         rte_spinlock_lock(&fpadev.lock);
 517         res = octeontx_fpa_gpool_alloc(object_size);
 518
 519         /* Bail if failed */
 520         if (unlikely(res < 0)) {
 521                 errno = res;
 522                 goto error_unlock;
 523         }
 524
 525         /* get fpavf */
 526         gpool = res;
 527
 528         /* get pool handle */
 529         gpool_handle = octeontx_fpa_gpool2handle(gpool);
 530         if (!octeontx_fpa_handle_valid(gpool_handle)) {
 531                 errno = ENOSPC;
 532                 goto error_gpool_free;
 533         }
 534
 535         /* Get pool bar address from handle */
 536         pool_bar = gpool_handle & ~(uint64_t)FPA_GPOOL_MASK;
 537
 538         res = octeontx_fpapf_pool_setup(gpool, object_size, buf_offset,
 539                                         object_count);
 540         if (res < 0) {
 541                 errno = res;
 542                 goto error_gpool_free;
 543         }
 544
 545         /* populate AURA fields */
 546         res = octeontx_fpapf_aura_attach(gpool);
 547         if (res < 0) {
 548                 errno = res;
 549                 goto error_pool_destroy;
 550         }
 551
 552         gaura = FPA_AURA_IDX(gpool);
 553
 554         /* Release lock */
 555         rte_spinlock_unlock(&fpadev.lock);
 556
 557         /* populate AURA registers */
 558         fpavf_write64(object_count, (void *)((uintptr_t)pool_bar +
 559                          FPA_VF_VHAURA_CNT(gaura)));
 560         fpavf_write64(object_count, (void *)((uintptr_t)pool_bar +
 561                          FPA_VF_VHAURA_CNT_LIMIT(gaura)));
 562         fpavf_write64(object_count + 1, (void *)((uintptr_t)pool_bar +
 563                          FPA_VF_VHAURA_CNT_THRESHOLD(gaura)));
 564
 565         octeontx_fpapf_start_count(gpool);
 566
 567         return gpool_handle;
 568
 569 error_pool_destroy:
 570         octeontx_fpavf_free(gpool);
 571         octeontx_fpapf_pool_destroy(gpool);
 572 error_gpool_free:
 573         octeontx_gpool_free(gpool);
 574 error_unlock:
 575         rte_spinlock_unlock(&fpadev.lock);
 576 error_end:
 577         return (uintptr_t)NULL;
 578 }
 579
 580 /*
 581  * Destroy a buffer pool.
 582  */
 583 int
 584 octeontx_fpa_bufpool_destroy(uintptr_t handle, int node_id)
 585 {
 586         void **node, **curr, *head = NULL;
 587         uint64_t sz;
 588         uint64_t cnt, avail;
 589         uint8_t gpool;
 590         uint16_t gaura;
 591         uintptr_t pool_bar;
 592         int ret;
 593
 594         RTE_SET_USED(node_id);
 595
 596         /* Wait for all outstanding writes to be committed */
 597         rte_smp_wmb();
 598
 599         if (unlikely(!octeontx_fpa_handle_valid(handle)))
 600                 return -EINVAL;
 601
 602         /* get the pool */
 603         gpool = octeontx_fpa_bufpool_gpool(handle);
 604         /* get the aura */
 605         gaura = octeontx_fpa_bufpool_gaura(handle);
 606
 607         /* Get pool bar address from handle */
 608         pool_bar = handle & ~(uint64_t)FPA_GPOOL_MASK;
 609
 610          /* Check for no outstanding buffers */
 611         cnt = fpavf_read64((void *)((uintptr_t)pool_bar +
 612                                         FPA_VF_VHAURA_CNT(gaura)));
 613         if (cnt) {
 614                 fpavf_log_dbg("buffer exist in pool cnt %" PRId64 "\n", cnt);
 615                 return -EBUSY;
 616         }
 617
 618         rte_spinlock_lock(&fpadev.lock);
 619
 620         avail = fpavf_read64((void *)((uintptr_t)pool_bar +
 621                                 FPA_VF_VHPOOL_AVAILABLE(gpool)));
 622
 623         /* Prepare to empty the entire POOL */
 624         fpavf_write64(avail, (void *)((uintptr_t)pool_bar +
 625                          FPA_VF_VHAURA_CNT_LIMIT(gaura)));
 626         fpavf_write64(avail + 1, (void *)((uintptr_t)pool_bar +
 627                          FPA_VF_VHAURA_CNT_THRESHOLD(gaura)));
 628
 629         /* Empty the pool */
 630         /* Invalidate the POOL */
 631         octeontx_gpool_free(gpool);
 632
 633         /* Process all buffers in the pool */
 634         while (avail--) {
 635
 636                 /* Yank a buffer from the pool */
 637                 node = (void *)(uintptr_t)
 638                         fpavf_read64((void *)
 639                                     (pool_bar + FPA_VF_VHAURA_OP_ALLOC(gaura)));
 640
 641                 if (node == NULL) {
 642                         fpavf_log_err("GAURA[%u] missing %" PRIx64 " buf\n",
 643                                       gaura, avail);
 644                         break;
 645                 }
 646
 647                 /* Imsert it into an ordered linked list */
 648                 for (curr = &head; curr[0] != NULL; curr = curr[0]) {
 649                         if ((uintptr_t)node <= (uintptr_t)curr[0])
 650                                 break;
 651                 }
 652                 node[0] = curr[0];
 653                 curr[0] = node;
 654         }
 655
 656         /* Verify the linked list to be a perfect series */
 657         sz = octeontx_fpa_bufpool_block_size(handle) << 7;
 658         for (curr = head; curr != NULL && curr[0] != NULL;
 659                 curr = curr[0]) {
 660                 if (curr == curr[0] ||
 661                         ((uintptr_t)curr != ((uintptr_t)curr[0] - sz))) {
 662                         fpavf_log_err("POOL# %u buf sequence err (%p vs. %p)\n",
 663                                       gpool, curr, curr[0]);
 664                 }
 665         }
 666
 667         /* Disable pool operation */
 668         fpavf_write64(~0ul, (void *)((uintptr_t)pool_bar +
 669                          FPA_VF_VHPOOL_START_ADDR(gpool)));
 670         fpavf_write64(~0ul, (void *)((uintptr_t)pool_bar +
 671                         FPA_VF_VHPOOL_END_ADDR(gpool)));
 672
 673         (void)octeontx_fpapf_pool_destroy(gpool);
 674
 675         /* Deactivate the AURA */
 676         fpavf_write64(0, (void *)((uintptr_t)pool_bar +
 677                         FPA_VF_VHAURA_CNT_LIMIT(gaura)));
 678         fpavf_write64(0, (void *)((uintptr_t)pool_bar +
 679                         FPA_VF_VHAURA_CNT_THRESHOLD(gaura)));
 680
 681         ret = octeontx_fpapf_aura_detach(gpool);
 682         if (ret) {
 683                 fpavf_log_err("Failed to dettach gaura %u. error code=%d\n",
 684                               gpool, ret);
 685         }
 686
 687         /* Free VF */
 688         (void)octeontx_fpavf_free(gpool);
 689
 690         rte_spinlock_unlock(&fpadev.lock);
 691         return 0;
 692 }
 693
 694 static void
 695 octeontx_fpavf_setup(void)
 696 {
 697         uint8_t i;
 698         static bool init_once;
 699
 700         if (!init_once) {
 701                 rte_spinlock_init(&fpadev.lock);
 702                 fpadev.total_gpool_cnt = 0;
 703
 704                 for (i = 0; i < FPA_VF_MAX; i++) {
 705
 706                         fpadev.pool[i].domain_id = ~0;
 707                         fpadev.pool[i].stack_ln_ptr = 0;
 708                         fpadev.pool[i].sz128 = 0;
 709                         fpadev.pool[i].bar0 = NULL;
 710                         fpadev.pool[i].pool_stack_base = NULL;
 711                         fpadev.pool[i].is_inuse = false;
 712                 }
 713                 init_once = 1;
 714         }
 715 }
 716
 717 static int
 718 octeontx_fpavf_identify(void *bar0)
 719 {
 720         uint64_t val;
 721         uint16_t domain_id;
 722         uint16_t vf_id;
 723         uint64_t stack_ln_ptr;
 724
 725         val = fpavf_read64((void *)((uintptr_t)bar0 +
 726                                 FPA_VF_VHAURA_CNT_THRESHOLD(0)));
 727
 728         domain_id = (val >> 8) & 0xffff;
 729         vf_id = (val >> 24) & 0xffff;
 730
 731         stack_ln_ptr = fpavf_read64((void *)((uintptr_t)bar0 +
 732                                         FPA_VF_VHPOOL_THRESHOLD(0)));
 733         if (vf_id >= FPA_VF_MAX) {
 734                 fpavf_log_err("vf_id(%d) greater than max vf (32)\n", vf_id);
 735                 return -1;
 736         }
 737
 738         if (fpadev.pool[vf_id].is_inuse) {
 739                 fpavf_log_err("vf_id %d is_inuse\n", vf_id);
 740                 return -1;
 741         }
 742
 743         fpadev.pool[vf_id].domain_id = domain_id;
 744         fpadev.pool[vf_id].vf_id = vf_id;
 745         fpadev.pool[vf_id].bar0 = bar0;
 746         fpadev.pool[vf_id].stack_ln_ptr = stack_ln_ptr;
 747
 748         /* SUCCESS */
 749         return vf_id;
 750 }
 751
 752 /* FPAVF pcie device aka mempool probe */
 753 static int
 754 fpavf_probe(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
 755 {
 756         uint8_t *idreg;
 757         int res;
 758         struct fpavf_res *fpa = NULL;
 759
 760         RTE_SET_USED(pci_drv);
 761         RTE_SET_USED(fpa);
 762
 763         /* For secondary processes, the primary has done all the work */
 764         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 765                 return 0;
 766
 767         if (pci_dev->mem_resource[0].addr == NULL) {
 768                 fpavf_log_err("Empty bars %p ", pci_dev->mem_resource[0].addr);
 769                 return -ENODEV;
 770         }
 771         idreg = pci_dev->mem_resource[0].addr;
 772
 773         octeontx_fpavf_setup();
 774
 775         res = octeontx_fpavf_identify(idreg);
 776         if (res < 0)
 777                 return -1;
 778
 779         fpa = &fpadev.pool[res];
 780         fpadev.total_gpool_cnt++;
 781         rte_wmb();
 782
 783         fpavf_log_dbg("total_fpavfs %d bar0 %p domain %d vf %d stk_ln_ptr 0x%x",
 784                        fpadev.total_gpool_cnt, fpa->bar0, fpa->domain_id,
 785                        fpa->vf_id, (unsigned int)fpa->stack_ln_ptr);
 786
 787         return 0;
 788 }
 789
 790 static const struct rte_pci_id pci_fpavf_map[] = {
 791         {
 792                 RTE_PCI_DEVICE(PCI_VENDOR_ID_CAVIUM,
 793                                 PCI_DEVICE_ID_OCTEONTX_FPA_VF)
 794         },
 795         {
 796                 .vendor_id = 0,
 797         },
 798 };
 799
 800 static struct rte_pci_driver pci_fpavf = {
 801         .id_table = pci_fpavf_map,
 802         .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_IOVA_AS_VA,
 803         .probe = fpavf_probe,
 804 };
 805
 806 RTE_PMD_REGISTER_PCI(octeontx_fpavf, pci_fpavf);