drivers/net/cxgbe/cxgbe_main.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2014-2018 Chelsio Communications.
   3  * All rights reserved.
   4  */
   5
   6 #include <sys/queue.h>
   7 #include <stdio.h>
   8 #include <errno.h>
   9 #include <stdint.h>
  10 #include <string.h>
  11 #include <unistd.h>
  12 #include <stdarg.h>
  13 #include <inttypes.h>
  14 #include <netinet/in.h>
  15
  16 #include <rte_byteorder.h>
  17 #include <rte_common.h>
  18 #include <rte_cycles.h>
  19 #include <rte_interrupts.h>
  20 #include <rte_log.h>
  21 #include <rte_debug.h>
  22 #include <rte_pci.h>
  23 #include <rte_atomic.h>
  24 #include <rte_branch_prediction.h>
  25 #include <rte_memory.h>
  26 #include <rte_tailq.h>
  27 #include <rte_eal.h>
  28 #include <rte_alarm.h>
  29 #include <rte_ether.h>
  30 #include <ethdev_driver.h>
  31 #include <ethdev_pci.h>
  32 #include <rte_random.h>
  33 #include <rte_dev.h>
  34 #include <rte_kvargs.h>
  35
  36 #include "base/common.h"
  37 #include "base/t4_regs.h"
  38 #include "base/t4_msg.h"
  39 #include "cxgbe.h"
  40 #include "cxgbe_pfvf.h"
  41 #include "clip_tbl.h"
  42 #include "l2t.h"
  43 #include "smt.h"
  44 #include "mps_tcam.h"
  45
  46 static const u16 cxgbe_filter_mode_features[] = {
  47         (F_FRAGMENTATION | F_MPSHITTYPE | F_MACMATCH | F_ETHERTYPE |
  48          F_PROTOCOL | F_PORT),
  49         (F_FRAGMENTATION | F_MPSHITTYPE | F_MACMATCH | F_ETHERTYPE |
  50          F_PROTOCOL | F_FCOE),
  51         (F_FRAGMENTATION | F_MPSHITTYPE | F_MACMATCH | F_ETHERTYPE | F_TOS |
  52          F_PORT),
  53         (F_FRAGMENTATION | F_MPSHITTYPE | F_MACMATCH | F_ETHERTYPE | F_TOS |
  54          F_FCOE),
  55         (F_FRAGMENTATION | F_MPSHITTYPE | F_MACMATCH | F_ETHERTYPE | F_PORT |
  56          F_FCOE),
  57         (F_FRAGMENTATION | F_MPSHITTYPE | F_MACMATCH | F_PROTOCOL | F_TOS |
  58          F_PORT | F_FCOE),
  59         (F_FRAGMENTATION | F_MPSHITTYPE | F_MACMATCH | F_PROTOCOL | F_VLAN |
  60          F_FCOE),
  61         (F_FRAGMENTATION | F_MPSHITTYPE | F_MACMATCH | F_PROTOCOL | F_VNIC_ID |
  62          F_FCOE),
  63         (F_FRAGMENTATION | F_MPSHITTYPE | F_MACMATCH | F_TOS | F_VLAN |
  64          F_FCOE),
  65         (F_FRAGMENTATION | F_MPSHITTYPE | F_MACMATCH | F_TOS | F_VNIC_ID |
  66          F_FCOE),
  67         (F_FRAGMENTATION | F_MPSHITTYPE | F_MACMATCH | F_VLAN | F_PORT |
  68          F_FCOE),
  69         (F_FRAGMENTATION | F_MPSHITTYPE | F_MACMATCH | F_VNIC_ID | F_PORT |
  70          F_FCOE),
  71         (F_FRAGMENTATION | F_MPSHITTYPE | F_ETHERTYPE | F_PROTOCOL | F_TOS |
  72          F_PORT | F_FCOE),
  73         (F_FRAGMENTATION | F_MPSHITTYPE | F_ETHERTYPE | F_VLAN | F_PORT),
  74         (F_FRAGMENTATION | F_MPSHITTYPE | F_ETHERTYPE | F_VLAN | F_FCOE),
  75         (F_FRAGMENTATION | F_MPSHITTYPE | F_ETHERTYPE | F_VNIC_ID | F_PORT),
  76         (F_FRAGMENTATION | F_MPSHITTYPE | F_ETHERTYPE | F_VNIC_ID | F_FCOE),
  77         (F_FRAGMENTATION | F_MPSHITTYPE | F_PROTOCOL | F_TOS | F_VLAN | F_PORT),
  78         (F_FRAGMENTATION | F_MPSHITTYPE | F_PROTOCOL | F_TOS | F_VLAN | F_FCOE),
  79         (F_FRAGMENTATION | F_MPSHITTYPE | F_PROTOCOL | F_TOS | F_VNIC_ID |
  80          F_PORT),
  81         (F_FRAGMENTATION | F_MPSHITTYPE | F_PROTOCOL | F_TOS | F_VNIC_ID |
  82          F_FCOE),
  83         (F_FRAGMENTATION | F_MPSHITTYPE | F_PROTOCOL | F_VLAN | F_PORT |
  84          F_FCOE),
  85         (F_FRAGMENTATION | F_MPSHITTYPE | F_PROTOCOL | F_VNIC_ID | F_PORT |
  86          F_FCOE),
  87         (F_FRAGMENTATION | F_MPSHITTYPE | F_TOS | F_VLAN | F_PORT | F_FCOE),
  88         (F_FRAGMENTATION | F_MPSHITTYPE | F_TOS | F_VNIC_ID | F_PORT | F_FCOE),
  89         (F_FRAGMENTATION | F_MPSHITTYPE | F_VLAN | F_VNIC_ID | F_FCOE),
  90         (F_FRAGMENTATION | F_MACMATCH | F_ETHERTYPE | F_PROTOCOL | F_PORT |
  91          F_FCOE),
  92         (F_FRAGMENTATION | F_MACMATCH | F_ETHERTYPE | F_TOS | F_PORT | F_FCOE),
  93         (F_FRAGMENTATION | F_MACMATCH | F_PROTOCOL | F_VLAN | F_PORT | F_FCOE),
  94         (F_FRAGMENTATION | F_MACMATCH | F_PROTOCOL | F_VNIC_ID | F_PORT |
  95          F_FCOE),
  96         (F_FRAGMENTATION | F_MACMATCH | F_TOS | F_VLAN | F_PORT | F_FCOE),
  97         (F_FRAGMENTATION | F_MACMATCH | F_TOS | F_VNIC_ID | F_PORT | F_FCOE),
  98         (F_FRAGMENTATION | F_ETHERTYPE | F_VLAN | F_PORT | F_FCOE),
  99         (F_FRAGMENTATION | F_ETHERTYPE | F_VNIC_ID | F_PORT | F_FCOE),
 100         (F_FRAGMENTATION | F_PROTOCOL | F_TOS | F_VLAN | F_FCOE),
 101         (F_FRAGMENTATION | F_PROTOCOL | F_TOS | F_VNIC_ID | F_FCOE),
 102         (F_FRAGMENTATION | F_VLAN | F_VNIC_ID | F_PORT | F_FCOE),
 103         (F_MPSHITTYPE | F_MACMATCH | F_ETHERTYPE | F_PROTOCOL | F_PORT |
 104          F_FCOE),
 105         (F_MPSHITTYPE | F_MACMATCH | F_ETHERTYPE | F_TOS | F_PORT | F_FCOE),
 106         (F_MPSHITTYPE | F_MACMATCH | F_PROTOCOL | F_VLAN | F_PORT),
 107         (F_MPSHITTYPE | F_MACMATCH | F_PROTOCOL | F_VNIC_ID | F_PORT),
 108         (F_MPSHITTYPE | F_MACMATCH | F_TOS | F_VLAN | F_PORT),
 109         (F_MPSHITTYPE | F_MACMATCH | F_TOS | F_VNIC_ID | F_PORT),
 110         (F_MPSHITTYPE | F_ETHERTYPE | F_VLAN | F_PORT | F_FCOE),
 111         (F_MPSHITTYPE | F_ETHERTYPE | F_VNIC_ID | F_PORT | F_FCOE),
 112         (F_MPSHITTYPE | F_PROTOCOL | F_TOS | F_VLAN | F_PORT | F_FCOE),
 113         (F_MPSHITTYPE | F_PROTOCOL | F_TOS | F_VNIC_ID | F_PORT | F_FCOE),
 114         (F_MPSHITTYPE | F_VLAN | F_VNIC_ID | F_PORT),
 115 };
 116
 117 /**
 118  * Allocate a chunk of memory. The allocated memory is cleared.
 119  */
 120 void *t4_alloc_mem(size_t size)
 121 {
 122         return rte_zmalloc(NULL, size, 0);
 123 }
 124
 125 /**
 126  * Free memory allocated through t4_alloc_mem().
 127  */
 128 void t4_free_mem(void *addr)
 129 {
 130         rte_free(addr);
 131 }
 132
 133 /*
 134  * Response queue handler for the FW event queue.
 135  */
 136 static int fwevtq_handler(struct sge_rspq *q, const __be64 *rsp,
 137                           __rte_unused const struct pkt_gl *gl)
 138 {
 139         u8 opcode = ((const struct rss_header *)rsp)->opcode;
 140
 141         rsp++;                                          /* skip RSS header */
 142
 143         /*
 144          * FW can send EGR_UPDATEs encapsulated in a CPL_FW4_MSG.
 145          */
 146         if (unlikely(opcode == CPL_FW4_MSG &&
 147                      ((const struct cpl_fw4_msg *)rsp)->type ==
 148                       FW_TYPE_RSSCPL)) {
 149                 rsp++;
 150                 opcode = ((const struct rss_header *)rsp)->opcode;
 151                 rsp++;
 152                 if (opcode != CPL_SGE_EGR_UPDATE) {
 153                         dev_err(q->adapter, "unexpected FW4/CPL %#x on FW event queue\n",
 154                                 opcode);
 155                         goto out;
 156                 }
 157         }
 158
 159         if (likely(opcode == CPL_SGE_EGR_UPDATE)) {
 160                 /* do nothing */
 161         } else if (opcode == CPL_FW6_MSG || opcode == CPL_FW4_MSG) {
 162                 const struct cpl_fw6_msg *msg = (const void *)rsp;
 163
 164                 t4_handle_fw_rpl(q->adapter, msg->data);
 165         } else if (opcode == CPL_ABORT_RPL_RSS) {
 166                 const struct cpl_abort_rpl_rss *p = (const void *)rsp;
 167
 168                 cxgbe_hash_del_filter_rpl(q->adapter, p);
 169         } else if (opcode == CPL_SET_TCB_RPL) {
 170                 const struct cpl_set_tcb_rpl *p = (const void *)rsp;
 171
 172                 cxgbe_filter_rpl(q->adapter, p);
 173         } else if (opcode == CPL_ACT_OPEN_RPL) {
 174                 const struct cpl_act_open_rpl *p = (const void *)rsp;
 175
 176                 cxgbe_hash_filter_rpl(q->adapter, p);
 177         } else if (opcode == CPL_L2T_WRITE_RPL) {
 178                 const struct cpl_l2t_write_rpl *p = (const void *)rsp;
 179
 180                 cxgbe_do_l2t_write_rpl(q->adapter, p);
 181         } else if (opcode == CPL_SMT_WRITE_RPL) {
 182                 const struct cpl_smt_write_rpl *p = (const void *)rsp;
 183
 184                 cxgbe_do_smt_write_rpl(q->adapter, p);
 185         } else {
 186                 dev_err(adapter, "unexpected CPL %#x on FW event queue\n",
 187                         opcode);
 188         }
 189 out:
 190         return 0;
 191 }
 192
 193 /**
 194  * Setup sge control queues to pass control information.
 195  */
 196 int cxgbe_setup_sge_ctrl_txq(struct adapter *adapter)
 197 {
 198         struct sge *s = &adapter->sge;
 199         int err = 0, i = 0;
 200
 201         for_each_port(adapter, i) {
 202                 struct port_info *pi = adap2pinfo(adapter, i);
 203                 char name[RTE_ETH_NAME_MAX_LEN];
 204                 struct sge_ctrl_txq *q = &s->ctrlq[i];
 205
 206                 q->q.size = 1024;
 207                 err = t4_sge_alloc_ctrl_txq(adapter, q,
 208                                             adapter->eth_dev,  i,
 209                                             s->fw_evtq.cntxt_id,
 210                                             rte_socket_id());
 211                 if (err) {
 212                         dev_err(adapter, "Failed to alloc ctrl txq. Err: %d",
 213                                 err);
 214                         goto out;
 215                 }
 216                 snprintf(name, sizeof(name), "%s_ctrl_pool_%d",
 217                          pi->eth_dev->device->driver->name,
 218                          pi->eth_dev->data->port_id);
 219                 q->mb_pool = rte_pktmbuf_pool_create(name, s->ctrlq[i].q.size,
 220                                                      RTE_CACHE_LINE_SIZE,
 221                                                      RTE_MBUF_PRIV_ALIGN,
 222                                                      RTE_MBUF_DEFAULT_BUF_SIZE,
 223                                                      SOCKET_ID_ANY);
 224                 if (!q->mb_pool) {
 225                         err = -rte_errno;
 226                         dev_err(adapter,
 227                                 "Can't create ctrl pool for port %d. Err: %d\n",
 228                                 pi->eth_dev->data->port_id, err);
 229                         goto out;
 230                 }
 231         }
 232         return 0;
 233 out:
 234         t4_free_sge_resources(adapter);
 235         return err;
 236 }
 237
 238 /**
 239  * cxgbe_poll_for_completion: Poll rxq for completion
 240  * @q: rxq to poll
 241  * @ms: milliseconds to delay
 242  * @cnt: number of times to poll
 243  * @c: completion to check for 'done' status
 244  *
 245  * Polls the rxq for reples until completion is done or the count
 246  * expires.
 247  */
 248 int cxgbe_poll_for_completion(struct sge_rspq *q, unsigned int ms,
 249                               unsigned int cnt, struct t4_completion *c)
 250 {
 251         unsigned int i;
 252         unsigned int work_done, budget = 32;
 253
 254         if (!c)
 255                 return -EINVAL;
 256
 257         for (i = 0; i < cnt; i++) {
 258                 cxgbe_poll(q, NULL, budget, &work_done);
 259                 t4_os_lock(&c->lock);
 260                 if (c->done) {
 261                         t4_os_unlock(&c->lock);
 262                         return 0;
 263                 }
 264                 t4_os_unlock(&c->lock);
 265                 rte_delay_ms(ms);
 266         }
 267         return -ETIMEDOUT;
 268 }
 269
 270 int cxgbe_setup_sge_fwevtq(struct adapter *adapter)
 271 {
 272         struct sge *s = &adapter->sge;
 273         int err = 0;
 274         int msi_idx = 0;
 275
 276         err = t4_sge_alloc_rxq(adapter, &s->fw_evtq, true, adapter->eth_dev,
 277                                msi_idx, NULL, fwevtq_handler, -1, NULL, 0,
 278                                rte_socket_id());
 279         return err;
 280 }
 281
 282 static int closest_timer(const struct sge *s, int time)
 283 {
 284         unsigned int i, match = 0;
 285         int delta, min_delta = INT_MAX;
 286
 287         for (i = 0; i < ARRAY_SIZE(s->timer_val); i++) {
 288                 delta = time - s->timer_val[i];
 289                 if (delta < 0)
 290                         delta = -delta;
 291                 if (delta < min_delta) {
 292                         min_delta = delta;
 293                         match = i;
 294                 }
 295         }
 296         return match;
 297 }
 298
 299 static int closest_thres(const struct sge *s, int thres)
 300 {
 301         unsigned int i, match = 0;
 302         int delta, min_delta = INT_MAX;
 303
 304         for (i = 0; i < ARRAY_SIZE(s->counter_val); i++) {
 305                 delta = thres - s->counter_val[i];
 306                 if (delta < 0)
 307                         delta = -delta;
 308                 if (delta < min_delta) {
 309                         min_delta = delta;
 310                         match = i;
 311                 }
 312         }
 313         return match;
 314 }
 315
 316 /**
 317  * cxgb4_set_rspq_intr_params - set a queue's interrupt holdoff parameters
 318  * @q: the Rx queue
 319  * @us: the hold-off time in us, or 0 to disable timer
 320  * @cnt: the hold-off packet count, or 0 to disable counter
 321  *
 322  * Sets an Rx queue's interrupt hold-off time and packet count.  At least
 323  * one of the two needs to be enabled for the queue to generate interrupts.
 324  */
 325 int cxgb4_set_rspq_intr_params(struct sge_rspq *q, unsigned int us,
 326                                unsigned int cnt)
 327 {
 328         struct adapter *adap = q->adapter;
 329         unsigned int timer_val;
 330
 331         if (cnt) {
 332                 int err;
 333                 u32 v, new_idx;
 334
 335                 new_idx = closest_thres(&adap->sge, cnt);
 336                 if (q->desc && q->pktcnt_idx != new_idx) {
 337                         /* the queue has already been created, update it */
 338                         v = V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_DMAQ) |
 339                             V_FW_PARAMS_PARAM_X(
 340                             FW_PARAMS_PARAM_DMAQ_IQ_INTCNTTHRESH) |
 341                             V_FW_PARAMS_PARAM_YZ(q->cntxt_id);
 342                         err = t4_set_params(adap, adap->mbox, adap->pf, 0, 1,
 343                                             &v, &new_idx);
 344                         if (err)
 345                                 return err;
 346                 }
 347                 q->pktcnt_idx = new_idx;
 348         }
 349
 350         timer_val = (us == 0) ? X_TIMERREG_RESTART_COUNTER :
 351                                 closest_timer(&adap->sge, us);
 352
 353         if ((us | cnt) == 0)
 354                 q->intr_params = V_QINTR_TIMER_IDX(X_TIMERREG_UPDATE_CIDX);
 355         else
 356                 q->intr_params = V_QINTR_TIMER_IDX(timer_val) |
 357                                  V_QINTR_CNT_EN(cnt > 0);
 358         return 0;
 359 }
 360
 361 /**
 362  * Allocate an active-open TID and set it to the supplied value.
 363  */
 364 int cxgbe_alloc_atid(struct tid_info *t, void *data)
 365 {
 366         int atid = -1;
 367
 368         t4_os_lock(&t->atid_lock);
 369         if (t->afree) {
 370                 union aopen_entry *p = t->afree;
 371
 372                 atid = p - t->atid_tab;
 373                 t->afree = p->next;
 374                 p->data = data;
 375                 t->atids_in_use++;
 376         }
 377         t4_os_unlock(&t->atid_lock);
 378         return atid;
 379 }
 380
 381 /**
 382  * Release an active-open TID.
 383  */
 384 void cxgbe_free_atid(struct tid_info *t, unsigned int atid)
 385 {
 386         union aopen_entry *p = &t->atid_tab[atid];
 387
 388         t4_os_lock(&t->atid_lock);
 389         p->next = t->afree;
 390         t->afree = p;
 391         t->atids_in_use--;
 392         t4_os_unlock(&t->atid_lock);
 393 }
 394
 395 /**
 396  * Populate a TID_RELEASE WR.  Caller must properly size the skb.
 397  */
 398 static void mk_tid_release(struct rte_mbuf *mbuf, unsigned int tid)
 399 {
 400         struct cpl_tid_release *req;
 401
 402         req = rte_pktmbuf_mtod(mbuf, struct cpl_tid_release *);
 403         INIT_TP_WR_MIT_CPL(req, CPL_TID_RELEASE, tid);
 404 }
 405
 406 /**
 407  * Release a TID and inform HW.  If we are unable to allocate the release
 408  * message we defer to a work queue.
 409  */
 410 void cxgbe_remove_tid(struct tid_info *t, unsigned int chan, unsigned int tid,
 411                       unsigned short family)
 412 {
 413         struct rte_mbuf *mbuf;
 414         struct adapter *adap = container_of(t, struct adapter, tids);
 415
 416         WARN_ON(tid >= t->ntids);
 417
 418         if (t->tid_tab[tid]) {
 419                 t->tid_tab[tid] = NULL;
 420                 rte_atomic32_dec(&t->conns_in_use);
 421                 if (t->hash_base && tid >= t->hash_base) {
 422                         if (family == FILTER_TYPE_IPV4)
 423                                 rte_atomic32_dec(&t->hash_tids_in_use);
 424                 } else {
 425                         if (family == FILTER_TYPE_IPV4)
 426                                 rte_atomic32_dec(&t->tids_in_use);
 427                 }
 428         }
 429
 430         mbuf = rte_pktmbuf_alloc((&adap->sge.ctrlq[chan])->mb_pool);
 431         if (mbuf) {
 432                 mbuf->data_len = sizeof(struct cpl_tid_release);
 433                 mbuf->pkt_len = mbuf->data_len;
 434                 mk_tid_release(mbuf, tid);
 435                 t4_mgmt_tx(&adap->sge.ctrlq[chan], mbuf);
 436         }
 437 }
 438
 439 /**
 440  * Insert a TID.
 441  */
 442 void cxgbe_insert_tid(struct tid_info *t, void *data, unsigned int tid,
 443                       unsigned short family)
 444 {
 445         t->tid_tab[tid] = data;
 446         if (t->hash_base && tid >= t->hash_base) {
 447                 if (family == FILTER_TYPE_IPV4)
 448                         rte_atomic32_inc(&t->hash_tids_in_use);
 449         } else {
 450                 if (family == FILTER_TYPE_IPV4)
 451                         rte_atomic32_inc(&t->tids_in_use);
 452         }
 453
 454         rte_atomic32_inc(&t->conns_in_use);
 455 }
 456
 457 /**
 458  * Free TID tables.
 459  */
 460 static void tid_free(struct tid_info *t)
 461 {
 462         if (t->tid_tab) {
 463                 if (t->ftid_bmap)
 464                         rte_bitmap_free(t->ftid_bmap);
 465
 466                 if (t->ftid_bmap_array)
 467                         t4_os_free(t->ftid_bmap_array);
 468
 469                 t4_os_free(t->tid_tab);
 470         }
 471
 472         memset(t, 0, sizeof(struct tid_info));
 473 }
 474
 475 /**
 476  * Allocate and initialize the TID tables.  Returns 0 on success.
 477  */
 478 static int tid_init(struct tid_info *t)
 479 {
 480         size_t size;
 481         unsigned int ftid_bmap_size;
 482         unsigned int natids = t->natids;
 483         unsigned int max_ftids = t->nftids;
 484
 485         ftid_bmap_size = rte_bitmap_get_memory_footprint(t->nftids);
 486         size = t->ntids * sizeof(*t->tid_tab) +
 487                 max_ftids * sizeof(*t->ftid_tab) +
 488                 natids * sizeof(*t->atid_tab);
 489
 490         t->tid_tab = t4_os_alloc(size);
 491         if (!t->tid_tab)
 492                 return -ENOMEM;
 493
 494         t->atid_tab = (union aopen_entry *)&t->tid_tab[t->ntids];
 495         t->ftid_tab = (struct filter_entry *)&t->atid_tab[t->natids];
 496         t->ftid_bmap_array = t4_os_alloc(ftid_bmap_size);
 497         if (!t->ftid_bmap_array) {
 498                 tid_free(t);
 499                 return -ENOMEM;
 500         }
 501
 502         t4_os_lock_init(&t->atid_lock);
 503         t4_os_lock_init(&t->ftid_lock);
 504
 505         t->afree = NULL;
 506         t->atids_in_use = 0;
 507         rte_atomic32_init(&t->tids_in_use);
 508         rte_atomic32_set(&t->tids_in_use, 0);
 509         rte_atomic32_init(&t->conns_in_use);
 510         rte_atomic32_set(&t->conns_in_use, 0);
 511
 512         /* Setup the free list for atid_tab and clear the stid bitmap. */
 513         if (natids) {
 514                 while (--natids)
 515                         t->atid_tab[natids - 1].next = &t->atid_tab[natids];
 516                 t->afree = t->atid_tab;
 517         }
 518
 519         t->ftid_bmap = rte_bitmap_init(t->nftids, t->ftid_bmap_array,
 520                                        ftid_bmap_size);
 521         if (!t->ftid_bmap) {
 522                 tid_free(t);
 523                 return -ENOMEM;
 524         }
 525
 526         return 0;
 527 }
 528
 529 static inline void init_rspq(struct adapter *adap, struct sge_rspq *q,
 530                       unsigned int us, unsigned int cnt,
 531                       unsigned int size, unsigned int iqe_size)
 532 {
 533         q->adapter = adap;
 534         cxgb4_set_rspq_intr_params(q, us, cnt);
 535         q->iqe_len = iqe_size;
 536         q->size = size;
 537 }
 538
 539 int cxgbe_cfg_queue_count(struct rte_eth_dev *eth_dev)
 540 {
 541         struct port_info *temp_pi, *pi = eth_dev->data->dev_private;
 542         struct adapter *adap = pi->adapter;
 543         u16 first_txq = 0, first_rxq = 0;
 544         struct sge *s = &adap->sge;
 545         u16 i, max_rxqs, max_txqs;
 546
 547         max_rxqs = s->max_ethqsets;
 548         max_txqs = s->max_ethqsets;
 549         for_each_port(adap, i) {
 550                 temp_pi = adap2pinfo(adap, i);
 551                 if (i == pi->port_id)
 552                         break;
 553
 554                 if (max_rxqs <= temp_pi->n_rx_qsets ||
 555                     max_txqs <= temp_pi->n_tx_qsets)
 556                         return -ENOMEM;
 557
 558                 first_rxq += temp_pi->n_rx_qsets;
 559                 first_txq += temp_pi->n_tx_qsets;
 560                 max_rxqs -= temp_pi->n_rx_qsets;
 561                 max_txqs -= temp_pi->n_tx_qsets;
 562         }
 563
 564         if ((eth_dev->data->nb_rx_queues < 1) ||
 565             (eth_dev->data->nb_tx_queues < 1))
 566                 return -EINVAL;
 567
 568         if (eth_dev->data->nb_rx_queues > max_rxqs ||
 569             eth_dev->data->nb_tx_queues > max_txqs)
 570                 return -EINVAL;
 571
 572         /* We must configure RSS, since config has changed*/
 573         pi->flags &= ~PORT_RSS_DONE;
 574
 575         pi->n_rx_qsets = eth_dev->data->nb_rx_queues;
 576         pi->n_tx_qsets = eth_dev->data->nb_tx_queues;
 577         pi->first_rxqset = first_rxq;
 578         pi->first_txqset = first_txq;
 579
 580         return 0;
 581 }
 582
 583 void cxgbe_cfg_queues_free(struct adapter *adap)
 584 {
 585         if (adap->sge.ethtxq) {
 586                 rte_free(adap->sge.ethtxq);
 587                 adap->sge.ethtxq = NULL;
 588         }
 589
 590         if (adap->sge.ethrxq) {
 591                 rte_free(adap->sge.ethrxq);
 592                 adap->sge.ethrxq = NULL;
 593         }
 594
 595         adap->flags &= ~CFG_QUEUES;
 596 }
 597
 598 int cxgbe_cfg_queues(struct rte_eth_dev *eth_dev)
 599 {
 600         struct port_info *pi = eth_dev->data->dev_private;
 601         struct adapter *adap = pi->adapter;
 602         struct sge *s = &adap->sge;
 603         u16 i;
 604
 605         if (!(adap->flags & CFG_QUEUES)) {
 606                 s->ethrxq = rte_calloc_socket(NULL, s->max_ethqsets,
 607                                               sizeof(struct sge_eth_rxq), 0,
 608                                               rte_socket_id());
 609                 if (!s->ethrxq)
 610                         return -ENOMEM;
 611
 612                 s->ethtxq = rte_calloc_socket(NULL, s->max_ethqsets,
 613                                               sizeof(struct sge_eth_txq), 0,
 614                                               rte_socket_id());
 615                 if (!s->ethtxq) {
 616                         rte_free(s->ethrxq);
 617                         s->ethrxq = NULL;
 618                         return -ENOMEM;
 619                 }
 620
 621                 for (i = 0; i < s->max_ethqsets; i++) {
 622                         struct sge_eth_rxq *r = &s->ethrxq[i];
 623                         struct sge_eth_txq *t = &s->ethtxq[i];
 624
 625                         init_rspq(adap, &r->rspq, 5, 32, 1024, 64);
 626                         r->usembufs = 1;
 627                         r->fl.size = (r->usembufs ? 1024 : 72);
 628
 629                         t->q.size = 1024;
 630                 }
 631
 632                 init_rspq(adap, &adap->sge.fw_evtq, 0, 0, 1024, 64);
 633                 adap->flags |= CFG_QUEUES;
 634         }
 635
 636         return 0;
 637 }
 638
 639 void cxgbe_stats_get(struct port_info *pi, struct port_stats *stats)
 640 {
 641         t4_get_port_stats_offset(pi->adapter, pi->tx_chan, stats,
 642                                  &pi->stats_base);
 643 }
 644
 645 void cxgbe_stats_reset(struct port_info *pi)
 646 {
 647         t4_clr_port_stats(pi->adapter, pi->tx_chan);
 648 }
 649
 650 static void setup_memwin(struct adapter *adap)
 651 {
 652         u32 mem_win0_base;
 653
 654         /* For T5, only relative offset inside the PCIe BAR is passed */
 655         mem_win0_base = MEMWIN0_BASE;
 656
 657         /*
 658          * Set up memory window for accessing adapter memory ranges.  (Read
 659          * back MA register to ensure that changes propagate before we attempt
 660          * to use the new values.)
 661          */
 662         t4_write_reg(adap,
 663                      PCIE_MEM_ACCESS_REG(A_PCIE_MEM_ACCESS_BASE_WIN,
 664                                          MEMWIN_NIC),
 665                      mem_win0_base | V_BIR(0) |
 666                      V_WINDOW(ilog2(MEMWIN0_APERTURE) - X_WINDOW_SHIFT));
 667         t4_read_reg(adap,
 668                     PCIE_MEM_ACCESS_REG(A_PCIE_MEM_ACCESS_BASE_WIN,
 669                                         MEMWIN_NIC));
 670 }
 671
 672 int cxgbe_init_rss(struct adapter *adap)
 673 {
 674         unsigned int i;
 675
 676         if (is_pf4(adap)) {
 677                 int err;
 678
 679                 err = t4_init_rss_mode(adap, adap->mbox);
 680                 if (err)
 681                         return err;
 682         }
 683
 684         for_each_port(adap, i) {
 685                 struct port_info *pi = adap2pinfo(adap, i);
 686
 687                 pi->rss = rte_zmalloc(NULL, pi->rss_size * sizeof(u16), 0);
 688                 if (!pi->rss)
 689                         return -ENOMEM;
 690
 691                 pi->rss_hf = CXGBE_RSS_HF_ALL;
 692         }
 693         return 0;
 694 }
 695
 696 /**
 697  * Dump basic information about the adapter.
 698  */
 699 void cxgbe_print_adapter_info(struct adapter *adap)
 700 {
 701         /**
 702          * Hardware/Firmware/etc. Version/Revision IDs.
 703          */
 704         t4_dump_version_info(adap);
 705 }
 706
 707 void cxgbe_print_port_info(struct adapter *adap)
 708 {
 709         int i;
 710         char buf[80];
 711         struct rte_pci_addr *loc = &adap->pdev->addr;
 712
 713         for_each_port(adap, i) {
 714                 const struct port_info *pi = adap2pinfo(adap, i);
 715                 char *bufp = buf;
 716
 717                 if (pi->link_cfg.pcaps & FW_PORT_CAP32_SPEED_100M)
 718                         bufp += sprintf(bufp, "100M/");
 719                 if (pi->link_cfg.pcaps & FW_PORT_CAP32_SPEED_1G)
 720                         bufp += sprintf(bufp, "1G/");
 721                 if (pi->link_cfg.pcaps & FW_PORT_CAP32_SPEED_10G)
 722                         bufp += sprintf(bufp, "10G/");
 723                 if (pi->link_cfg.pcaps & FW_PORT_CAP32_SPEED_25G)
 724                         bufp += sprintf(bufp, "25G/");
 725                 if (pi->link_cfg.pcaps & FW_PORT_CAP32_SPEED_40G)
 726                         bufp += sprintf(bufp, "40G/");
 727                 if (pi->link_cfg.pcaps & FW_PORT_CAP32_SPEED_50G)
 728                         bufp += sprintf(bufp, "50G/");
 729                 if (pi->link_cfg.pcaps & FW_PORT_CAP32_SPEED_100G)
 730                         bufp += sprintf(bufp, "100G/");
 731                 if (bufp != buf)
 732                         --bufp;
 733                 sprintf(bufp, "BASE-%s",
 734                         t4_get_port_type_description(
 735                                 (enum fw_port_type)pi->link_cfg.port_type));
 736
 737                 dev_info(adap,
 738                          " " PCI_PRI_FMT " Chelsio rev %d %s %s\n",
 739                          loc->domain, loc->bus, loc->devid, loc->function,
 740                          CHELSIO_CHIP_RELEASE(adap->params.chip), buf,
 741                          (adap->flags & USING_MSIX) ? " MSI-X" :
 742                          (adap->flags & USING_MSI) ? " MSI" : "");
 743         }
 744 }
 745
 746 static int check_devargs_handler(const char *key, const char *value, void *p)
 747 {
 748         if (!strncmp(key, CXGBE_DEVARG_CMN_KEEP_OVLAN, strlen(key)) ||
 749             !strncmp(key, CXGBE_DEVARG_CMN_TX_MODE_LATENCY, strlen(key)) ||
 750             !strncmp(key, CXGBE_DEVARG_VF_FORCE_LINK_UP, strlen(key))) {
 751                 if (!strncmp(value, "1", 1)) {
 752                         bool *dst_val = (bool *)p;
 753
 754                         *dst_val = true;
 755                 }
 756         }
 757
 758         if (!strncmp(key, CXGBE_DEVARG_PF_FILTER_MODE, strlen(key)) ||
 759             !strncmp(key, CXGBE_DEVARG_PF_FILTER_MASK, strlen(key))) {
 760                 u32 *dst_val = (u32 *)p;
 761                 char *endptr = NULL;
 762                 u32 arg_val;
 763
 764                 arg_val = strtoul(value, &endptr, 16);
 765                 if (errno || endptr == value)
 766                         return -EINVAL;
 767
 768                 *dst_val = arg_val;
 769         }
 770
 771         return 0;
 772 }
 773
 774 static int cxgbe_get_devargs(struct rte_devargs *devargs, const char *key,
 775                              void *p)
 776 {
 777         struct rte_kvargs *kvlist;
 778         int ret = 0;
 779
 780         if (!devargs)
 781                 return 0;
 782
 783         kvlist = rte_kvargs_parse(devargs->args, NULL);
 784         if (!kvlist)
 785                 return 0;
 786
 787         if (!rte_kvargs_count(kvlist, key))
 788                 goto out;
 789
 790         ret = rte_kvargs_process(kvlist, key, check_devargs_handler, p);
 791
 792 out:
 793         rte_kvargs_free(kvlist);
 794
 795         return ret;
 796 }
 797
 798 static void cxgbe_get_devargs_int(struct adapter *adap, bool *dst,
 799                                   const char *key, bool default_value)
 800 {
 801         struct rte_pci_device *pdev = adap->pdev;
 802         int ret;
 803         bool devarg_value = default_value;
 804
 805         *dst = default_value;
 806         if (!pdev)
 807                 return;
 808
 809         ret = cxgbe_get_devargs(pdev->device.devargs, key, &devarg_value);
 810         if (ret)
 811                 return;
 812
 813         *dst = devarg_value;
 814 }
 815
 816 static void cxgbe_get_devargs_u32(struct adapter *adap, u32 *dst,
 817                                   const char *key, u32 default_value)
 818 {
 819         struct rte_pci_device *pdev = adap->pdev;
 820         u32 devarg_value = default_value;
 821         int ret;
 822
 823         *dst = default_value;
 824         if (!pdev)
 825                 return;
 826
 827         ret = cxgbe_get_devargs(pdev->device.devargs, key, &devarg_value);
 828         if (ret)
 829                 return;
 830
 831         *dst = devarg_value;
 832 }
 833
 834 void cxgbe_process_devargs(struct adapter *adap)
 835 {
 836         cxgbe_get_devargs_int(adap, &adap->devargs.keep_ovlan,
 837                               CXGBE_DEVARG_CMN_KEEP_OVLAN, false);
 838         cxgbe_get_devargs_int(adap, &adap->devargs.tx_mode_latency,
 839                               CXGBE_DEVARG_CMN_TX_MODE_LATENCY, false);
 840         cxgbe_get_devargs_int(adap, &adap->devargs.force_link_up,
 841                               CXGBE_DEVARG_VF_FORCE_LINK_UP, false);
 842         cxgbe_get_devargs_u32(adap, &adap->devargs.filtermode,
 843                               CXGBE_DEVARG_PF_FILTER_MODE, 0);
 844         cxgbe_get_devargs_u32(adap, &adap->devargs.filtermask,
 845                               CXGBE_DEVARG_PF_FILTER_MASK, 0);
 846 }
 847
 848 static void configure_vlan_types(struct adapter *adapter)
 849 {
 850         int i;
 851
 852         for_each_port(adapter, i) {
 853                 /* OVLAN Type 0x88a8 */
 854                 t4_set_reg_field(adapter, MPS_PORT_RX_OVLAN_REG(i, A_RX_OVLAN0),
 855                                  V_OVLAN_MASK(M_OVLAN_MASK) |
 856                                  V_OVLAN_ETYPE(M_OVLAN_ETYPE),
 857                                  V_OVLAN_MASK(M_OVLAN_MASK) |
 858                                  V_OVLAN_ETYPE(0x88a8));
 859                 /* OVLAN Type 0x9100 */
 860                 t4_set_reg_field(adapter, MPS_PORT_RX_OVLAN_REG(i, A_RX_OVLAN1),
 861                                  V_OVLAN_MASK(M_OVLAN_MASK) |
 862                                  V_OVLAN_ETYPE(M_OVLAN_ETYPE),
 863                                  V_OVLAN_MASK(M_OVLAN_MASK) |
 864                                  V_OVLAN_ETYPE(0x9100));
 865
 866                 /* IVLAN 0X8100 */
 867                 t4_set_reg_field(adapter, MPS_PORT_RX_IVLAN(i),
 868                                  V_IVLAN_ETYPE(M_IVLAN_ETYPE),
 869                                  V_IVLAN_ETYPE(0x8100));
 870
 871                 t4_set_reg_field(adapter, MPS_PORT_RX_CTL(i),
 872                                  F_OVLAN_EN0 | F_OVLAN_EN1 |
 873                                  F_IVLAN_EN,
 874                                  F_OVLAN_EN0 | F_OVLAN_EN1 |
 875                                  F_IVLAN_EN);
 876         }
 877
 878         t4_tp_wr_bits_indirect(adapter, A_TP_INGRESS_CONFIG, V_RM_OVLAN(1),
 879                                V_RM_OVLAN(!adapter->devargs.keep_ovlan));
 880 }
 881
 882 static int cxgbe_get_filter_vnic_mode_from_devargs(u32 val)
 883 {
 884         u32 vnic_mode;
 885
 886         vnic_mode = val & (CXGBE_DEVARGS_FILTER_MODE_PF_VF |
 887                            CXGBE_DEVARGS_FILTER_MODE_VLAN_OUTER);
 888         if (vnic_mode) {
 889                 switch (vnic_mode) {
 890                 case CXGBE_DEVARGS_FILTER_MODE_VLAN_OUTER:
 891                         return CXGBE_FILTER_VNIC_MODE_OVLAN;
 892                 case CXGBE_DEVARGS_FILTER_MODE_PF_VF:
 893                         return CXGBE_FILTER_VNIC_MODE_PFVF;
 894                 default:
 895                         return -EINVAL;
 896                 }
 897         }
 898
 899         return CXGBE_FILTER_VNIC_MODE_NONE;
 900 }
 901
 902 static int cxgbe_get_filter_mode_from_devargs(u32 val, bool closest_match)
 903 {
 904         int vnic_mode, fmode = 0;
 905         bool found = false;
 906         u8 i;
 907
 908         if (val >= CXGBE_DEVARGS_FILTER_MODE_MAX) {
 909                 pr_err("Unsupported flags set in filter mode. Must be < 0x%x\n",
 910                        CXGBE_DEVARGS_FILTER_MODE_MAX);
 911                 return -ERANGE;
 912         }
 913
 914         vnic_mode = cxgbe_get_filter_vnic_mode_from_devargs(val);
 915         if (vnic_mode < 0) {
 916                 pr_err("Unsupported Vnic-mode, more than 1 Vnic-mode selected\n");
 917                 return vnic_mode;
 918         }
 919
 920         if (vnic_mode)
 921                 fmode |= F_VNIC_ID;
 922         if (val & CXGBE_DEVARGS_FILTER_MODE_PHYSICAL_PORT)
 923                 fmode |= F_PORT;
 924         if (val & CXGBE_DEVARGS_FILTER_MODE_ETHERNET_DSTMAC)
 925                 fmode |= F_MACMATCH;
 926         if (val & CXGBE_DEVARGS_FILTER_MODE_ETHERNET_ETHTYPE)
 927                 fmode |= F_ETHERTYPE;
 928         if (val & CXGBE_DEVARGS_FILTER_MODE_VLAN_INNER)
 929                 fmode |= F_VLAN;
 930         if (val & CXGBE_DEVARGS_FILTER_MODE_IP_TOS)
 931                 fmode |= F_TOS;
 932         if (val & CXGBE_DEVARGS_FILTER_MODE_IP_PROTOCOL)
 933                 fmode |= F_PROTOCOL;
 934
 935         for (i = 0; i < ARRAY_SIZE(cxgbe_filter_mode_features); i++) {
 936                 if ((cxgbe_filter_mode_features[i] & fmode) == fmode) {
 937                         found = true;
 938                         break;
 939                 }
 940         }
 941
 942         if (!found)
 943                 return -EINVAL;
 944
 945         return closest_match ? cxgbe_filter_mode_features[i] : fmode;
 946 }
 947
 948 static int configure_filter_mode_mask(struct adapter *adap)
 949 {
 950         u32 params[2], val[2], nparams = 0;
 951         int ret;
 952
 953         if (!adap->devargs.filtermode && !adap->devargs.filtermask)
 954                 return 0;
 955
 956         if (!adap->devargs.filtermode || !adap->devargs.filtermask) {
 957                 pr_err("Unsupported, Provide both filtermode and filtermask devargs\n");
 958                 return -EINVAL;
 959         }
 960
 961         if (adap->devargs.filtermask & ~adap->devargs.filtermode) {
 962                 pr_err("Unsupported, filtermask (0x%x) must be subset of filtermode (0x%x)\n",
 963                        adap->devargs.filtermask, adap->devargs.filtermode);
 964
 965                 return -EINVAL;
 966         }
 967
 968         params[0] = CXGBE_FW_PARAM_DEV(FILTER) |
 969                     V_FW_PARAMS_PARAM_Y(FW_PARAM_DEV_FILTER_MODE_MASK);
 970
 971         ret = cxgbe_get_filter_mode_from_devargs(adap->devargs.filtermode,
 972                                                  true);
 973         if (ret < 0) {
 974                 pr_err("Unsupported filtermode devargs combination:0x%x\n",
 975                        adap->devargs.filtermode);
 976                 return ret;
 977         }
 978
 979         val[0] = V_FW_PARAMS_PARAM_FILTER_MODE(ret);
 980
 981         ret = cxgbe_get_filter_mode_from_devargs(adap->devargs.filtermask,
 982                                                  false);
 983         if (ret < 0) {
 984                 pr_err("Unsupported filtermask devargs combination:0x%x\n",
 985                        adap->devargs.filtermask);
 986                 return ret;
 987         }
 988
 989         val[0] |= V_FW_PARAMS_PARAM_FILTER_MASK(ret);
 990
 991         nparams++;
 992
 993         ret = cxgbe_get_filter_vnic_mode_from_devargs(adap->devargs.filtermode);
 994         if (ret < 0)
 995                 return ret;
 996
 997         if (ret) {
 998                 params[1] = CXGBE_FW_PARAM_DEV(FILTER) |
 999                             V_FW_PARAMS_PARAM_Y(FW_PARAM_DEV_FILTER_VNIC_MODE);
1000
1001                 val[1] = ret - 1;
1002
1003                 nparams++;
1004         }
1005
1006         return t4_set_params(adap, adap->mbox, adap->pf, 0, nparams,
1007                              params, val);
1008 }
1009
1010 static void configure_pcie_ext_tag(struct adapter *adapter)
1011 {
1012         u16 v;
1013         int pos = t4_os_find_pci_capability(adapter, PCI_CAP_ID_EXP);
1014
1015         if (!pos)
1016                 return;
1017
1018         if (pos > 0) {
1019                 t4_os_pci_read_cfg2(adapter, pos + PCI_EXP_DEVCTL, &v);
1020                 v |= PCI_EXP_DEVCTL_EXT_TAG;
1021                 t4_os_pci_write_cfg2(adapter, pos + PCI_EXP_DEVCTL, v);
1022                 if (is_t6(adapter->params.chip)) {
1023                         t4_set_reg_field(adapter, A_PCIE_CFG2,
1024                                          V_T6_TOTMAXTAG(M_T6_TOTMAXTAG),
1025                                          V_T6_TOTMAXTAG(7));
1026                         t4_set_reg_field(adapter, A_PCIE_CMD_CFG,
1027                                          V_T6_MINTAG(M_T6_MINTAG),
1028                                          V_T6_MINTAG(8));
1029                 } else {
1030                         t4_set_reg_field(adapter, A_PCIE_CFG2,
1031                                          V_TOTMAXTAG(M_TOTMAXTAG),
1032                                          V_TOTMAXTAG(3));
1033                         t4_set_reg_field(adapter, A_PCIE_CMD_CFG,
1034                                          V_MINTAG(M_MINTAG),
1035                                          V_MINTAG(8));
1036                 }
1037         }
1038 }
1039
1040 /* Figure out how many Queue Sets we can support */
1041 void cxgbe_configure_max_ethqsets(struct adapter *adapter)
1042 {
1043         unsigned int ethqsets, reserved;
1044
1045         /* We need to reserve an Ingress Queue for the Asynchronous Firmware
1046          * Event Queue and 1 Control Queue per port.
1047          *
1048          * For each Queue Set, we'll need the ability to allocate two Egress
1049          * Contexts -- one for the Ingress Queue Free List and one for the TX
1050          * Ethernet Queue.
1051          */
1052         reserved = max(adapter->params.nports, 1);
1053         if (is_pf4(adapter)) {
1054                 struct pf_resources *pfres = &adapter->params.pfres;
1055
1056                 ethqsets = min(pfres->niqflint, pfres->nethctrl);
1057                 if (ethqsets > (pfres->neq / 2))
1058                         ethqsets = pfres->neq / 2;
1059         } else {
1060                 struct vf_resources *vfres = &adapter->params.vfres;
1061
1062                 ethqsets = min(vfres->niqflint, vfres->nethctrl);
1063                 if (ethqsets > (vfres->neq / 2))
1064                         ethqsets = vfres->neq / 2;
1065         }
1066
1067         ethqsets -= reserved;
1068         adapter->sge.max_ethqsets = ethqsets;
1069 }
1070
1071 /*
1072  * Tweak configuration based on system architecture, etc.  Most of these have
1073  * defaults assigned to them by Firmware Configuration Files (if we're using
1074  * them) but need to be explicitly set if we're using hard-coded
1075  * initialization. So these are essentially common tweaks/settings for
1076  * Configuration Files and hard-coded initialization ...
1077  */
1078 static int adap_init0_tweaks(struct adapter *adapter)
1079 {
1080         u8 rx_dma_offset;
1081
1082         /*
1083          * Fix up various Host-Dependent Parameters like Page Size, Cache
1084          * Line Size, etc.  The firmware default is for a 4KB Page Size and
1085          * 64B Cache Line Size ...
1086          */
1087         t4_fixup_host_params_compat(adapter, CXGBE_PAGE_SIZE, L1_CACHE_BYTES,
1088                                     T5_LAST_REV);
1089
1090         /*
1091          * Keep the chip default offset to deliver Ingress packets into our
1092          * DMA buffers to zero
1093          */
1094         rx_dma_offset = 0;
1095         t4_set_reg_field(adapter, A_SGE_CONTROL, V_PKTSHIFT(M_PKTSHIFT),
1096                          V_PKTSHIFT(rx_dma_offset));
1097
1098         t4_set_reg_field(adapter, A_SGE_FLM_CFG,
1099                          V_CREDITCNT(M_CREDITCNT) | M_CREDITCNTPACKING,
1100                          V_CREDITCNT(3) | V_CREDITCNTPACKING(1));
1101
1102         t4_set_reg_field(adapter, A_SGE_INGRESS_RX_THRESHOLD,
1103                          V_THRESHOLD_3(M_THRESHOLD_3), V_THRESHOLD_3(32U));
1104
1105         t4_set_reg_field(adapter, A_SGE_CONTROL2, V_IDMAARBROUNDROBIN(1U),
1106                          V_IDMAARBROUNDROBIN(1U));
1107
1108         /*
1109          * Don't include the "IP Pseudo Header" in CPL_RX_PKT checksums: Linux
1110          * adds the pseudo header itself.
1111          */
1112         t4_tp_wr_bits_indirect(adapter, A_TP_INGRESS_CONFIG,
1113                                F_CSUM_HAS_PSEUDO_HDR, 0);
1114
1115         return 0;
1116 }
1117
1118 /*
1119  * Attempt to initialize the adapter via a Firmware Configuration File.
1120  */
1121 static int adap_init0_config(struct adapter *adapter, int reset)
1122 {
1123         u32 finiver, finicsum, cfcsum, param, val;
1124         struct fw_caps_config_cmd caps_cmd;
1125         unsigned long mtype = 0, maddr = 0;
1126         u8 config_issued = 0;
1127         char config_name[20];
1128         int cfg_addr, ret;
1129
1130         /*
1131          * Reset device if necessary.
1132          */
1133         if (reset) {
1134                 ret = t4_fw_reset(adapter, adapter->mbox,
1135                                   F_PIORSTMODE | F_PIORST);
1136                 if (ret < 0) {
1137                         dev_warn(adapter, "Firmware reset failed, error %d\n",
1138                                  -ret);
1139                         goto bye;
1140                 }
1141         }
1142
1143         cfg_addr = t4_flash_cfg_addr(adapter);
1144         if (cfg_addr < 0) {
1145                 ret = cfg_addr;
1146                 dev_warn(adapter, "Finding address for firmware config file in flash failed, error %d\n",
1147                          -ret);
1148                 goto bye;
1149         }
1150
1151         strcpy(config_name, "On Flash");
1152         mtype = FW_MEMTYPE_CF_FLASH;
1153         maddr = cfg_addr;
1154
1155         /* Enable HASH filter region when support is available. */
1156         val = 1;
1157         param = CXGBE_FW_PARAM_DEV(HASHFILTER_WITH_OFLD);
1158         t4_set_params(adapter, adapter->mbox, adapter->pf, 0, 1,
1159                       &param, &val);
1160
1161         /*
1162          * Issue a Capability Configuration command to the firmware to get it
1163          * to parse the Configuration File.  We don't use t4_fw_config_file()
1164          * because we want the ability to modify various features after we've
1165          * processed the configuration file ...
1166          */
1167         memset(&caps_cmd, 0, sizeof(caps_cmd));
1168         caps_cmd.op_to_write = cpu_to_be32(V_FW_CMD_OP(FW_CAPS_CONFIG_CMD) |
1169                                            F_FW_CMD_REQUEST | F_FW_CMD_READ);
1170         caps_cmd.cfvalid_to_len16 =
1171                 cpu_to_be32(F_FW_CAPS_CONFIG_CMD_CFVALID |
1172                             V_FW_CAPS_CONFIG_CMD_MEMTYPE_CF(mtype) |
1173                             V_FW_CAPS_CONFIG_CMD_MEMADDR64K_CF(maddr >> 16) |
1174                             FW_LEN16(caps_cmd));
1175         ret = t4_wr_mbox(adapter, adapter->mbox, &caps_cmd, sizeof(caps_cmd),
1176                          &caps_cmd);
1177         /*
1178          * If the CAPS_CONFIG failed with an ENOENT (for a Firmware
1179          * Configuration File in FLASH), our last gasp effort is to use the
1180          * Firmware Configuration File which is embedded in the firmware.  A
1181          * very few early versions of the firmware didn't have one embedded
1182          * but we can ignore those.
1183          */
1184         if (ret == -ENOENT) {
1185                 dev_info(adapter, "%s: Going for embedded config in firmware..\n",
1186                          __func__);
1187
1188                 memset(&caps_cmd, 0, sizeof(caps_cmd));
1189                 caps_cmd.op_to_write =
1190                         cpu_to_be32(V_FW_CMD_OP(FW_CAPS_CONFIG_CMD) |
1191                                     F_FW_CMD_REQUEST | F_FW_CMD_READ);
1192                 caps_cmd.cfvalid_to_len16 = cpu_to_be32(FW_LEN16(caps_cmd));
1193                 ret = t4_wr_mbox(adapter, adapter->mbox, &caps_cmd,
1194                                  sizeof(caps_cmd), &caps_cmd);
1195                 strcpy(config_name, "Firmware Default");
1196         }
1197
1198         config_issued = 1;
1199         if (ret < 0)
1200                 goto bye;
1201
1202         finiver = be32_to_cpu(caps_cmd.finiver);
1203         finicsum = be32_to_cpu(caps_cmd.finicsum);
1204         cfcsum = be32_to_cpu(caps_cmd.cfcsum);
1205         if (finicsum != cfcsum)
1206                 dev_warn(adapter, "Configuration File checksum mismatch: [fini] csum=%#x, computed csum=%#x\n",
1207                          finicsum, cfcsum);
1208
1209         /*
1210          * If we're a pure NIC driver then disable all offloading facilities.
1211          * This will allow the firmware to optimize aspects of the hardware
1212          * configuration which will result in improved performance.
1213          */
1214         caps_cmd.niccaps &= cpu_to_be16(~FW_CAPS_CONFIG_NIC_ETHOFLD);
1215         caps_cmd.toecaps = 0;
1216         caps_cmd.iscsicaps = 0;
1217         caps_cmd.rdmacaps = 0;
1218         caps_cmd.fcoecaps = 0;
1219         caps_cmd.cryptocaps = 0;
1220
1221         /*
1222          * And now tell the firmware to use the configuration we just loaded.
1223          */
1224         caps_cmd.op_to_write = cpu_to_be32(V_FW_CMD_OP(FW_CAPS_CONFIG_CMD) |
1225                                            F_FW_CMD_REQUEST | F_FW_CMD_WRITE);
1226         caps_cmd.cfvalid_to_len16 = htonl(FW_LEN16(caps_cmd));
1227         ret = t4_wr_mbox(adapter, adapter->mbox, &caps_cmd, sizeof(caps_cmd),
1228                          NULL);
1229         if (ret < 0) {
1230                 dev_warn(adapter, "Unable to finalize Firmware Capabilities %d\n",
1231                          -ret);
1232                 goto bye;
1233         }
1234
1235         /*
1236          * Tweak configuration based on system architecture, etc.
1237          */
1238         ret = adap_init0_tweaks(adapter);
1239         if (ret < 0) {
1240                 dev_warn(adapter, "Unable to do init0-tweaks %d\n", -ret);
1241                 goto bye;
1242         }
1243
1244         /*
1245          * And finally tell the firmware to initialize itself using the
1246          * parameters from the Configuration File.
1247          */
1248         ret = t4_fw_initialize(adapter, adapter->mbox);
1249         if (ret < 0) {
1250                 dev_warn(adapter, "Initializing Firmware failed, error %d\n",
1251                          -ret);
1252                 goto bye;
1253         }
1254
1255         /*
1256          * Return successfully and note that we're operating with parameters
1257          * not supplied by the driver, rather than from hard-wired
1258          * initialization constants buried in the driver.
1259          */
1260         dev_info(adapter,
1261                  "Successfully configured using Firmware Configuration File \"%s\", version %#x, computed checksum %#x\n",
1262                  config_name, finiver, cfcsum);
1263
1264         return 0;
1265
1266         /*
1267          * Something bad happened.  Return the error ...  (If the "error"
1268          * is that there's no Configuration File on the adapter we don't
1269          * want to issue a warning since this is fairly common.)
1270          */
1271 bye:
1272         if (config_issued && ret != -ENOENT)
1273                 dev_warn(adapter, "\"%s\" configuration file error %d\n",
1274                          config_name, -ret);
1275
1276         dev_debug(adapter, "%s: returning ret = %d ..\n", __func__, ret);
1277         return ret;
1278 }
1279
1280 static int adap_init0(struct adapter *adap)
1281 {
1282         struct fw_caps_config_cmd caps_cmd;
1283         int ret = 0;
1284         u32 v, port_vec;
1285         enum dev_state state;
1286         u32 params[7], val[7];
1287         int reset = 1;
1288         int mbox = adap->mbox;
1289
1290         /*
1291          * Contact FW, advertising Master capability.
1292          */
1293         ret = t4_fw_hello(adap, adap->mbox, adap->mbox, MASTER_MAY, &state);
1294         if (ret < 0) {
1295                 dev_err(adap, "%s: could not connect to FW, error %d\n",
1296                         __func__, -ret);
1297                 goto bye;
1298         }
1299
1300         CXGBE_DEBUG_MBOX(adap, "%s: adap->mbox = %d; ret = %d\n", __func__,
1301                          adap->mbox, ret);
1302
1303         if (ret == mbox)
1304                 adap->flags |= MASTER_PF;
1305
1306         if (state == DEV_STATE_INIT) {
1307                 /*
1308                  * Force halt and reset FW because a previous instance may have
1309                  * exited abnormally without properly shutting down
1310                  */
1311                 ret = t4_fw_halt(adap, adap->mbox, reset);
1312                 if (ret < 0) {
1313                         dev_err(adap, "Failed to halt. Exit.\n");
1314                         goto bye;
1315                 }
1316
1317                 ret = t4_fw_restart(adap, adap->mbox, reset);
1318                 if (ret < 0) {
1319                         dev_err(adap, "Failed to restart. Exit.\n");
1320                         goto bye;
1321                 }
1322                 state = (enum dev_state)((unsigned)state & ~DEV_STATE_INIT);
1323         }
1324
1325         t4_get_version_info(adap);
1326
1327         ret = t4_get_core_clock(adap, &adap->params.vpd);
1328         if (ret < 0) {
1329                 dev_err(adap, "%s: could not get core clock, error %d\n",
1330                         __func__, -ret);
1331                 goto bye;
1332         }
1333
1334         /*
1335          * If the firmware is initialized already (and we're not forcing a
1336          * master initialization), note that we're living with existing
1337          * adapter parameters.  Otherwise, it's time to try initializing the
1338          * adapter ...
1339          */
1340         if (state == DEV_STATE_INIT) {
1341                 dev_info(adap, "Coming up as %s: Adapter already initialized\n",
1342                          adap->flags & MASTER_PF ? "MASTER" : "SLAVE");
1343         } else {
1344                 dev_info(adap, "Coming up as MASTER: Initializing adapter\n");
1345
1346                 ret = adap_init0_config(adap, reset);
1347                 if (ret == -ENOENT) {
1348                         dev_err(adap,
1349                                 "No Configuration File present on adapter. Using hard-wired configuration parameters.\n");
1350                         goto bye;
1351                 }
1352         }
1353         if (ret < 0) {
1354                 dev_err(adap, "could not initialize adapter, error %d\n", -ret);
1355                 goto bye;
1356         }
1357
1358         /* Now that we've successfully configured and initialized the adapter
1359          * (or found it already initialized), we can ask the Firmware what
1360          * resources it has provisioned for us.
1361          */
1362         ret = t4_get_pfres(adap);
1363         if (ret) {
1364                 dev_err(adap->pdev_dev,
1365                         "Unable to retrieve resource provisioning info\n");
1366                 goto bye;
1367         }
1368
1369         /* Find out what ports are available to us. */
1370         v = V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_DEV) |
1371             V_FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DEV_PORTVEC);
1372         ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1, &v, &port_vec);
1373         if (ret < 0) {
1374                 dev_err(adap, "%s: failure in t4_query_params; error = %d\n",
1375                         __func__, ret);
1376                 goto bye;
1377         }
1378
1379         adap->params.nports = hweight32(port_vec);
1380         adap->params.portvec = port_vec;
1381
1382         dev_debug(adap, "%s: adap->params.nports = %u\n", __func__,
1383                   adap->params.nports);
1384
1385         /*
1386          * Give the SGE code a chance to pull in anything that it needs ...
1387          * Note that this must be called after we retrieve our VPD parameters
1388          * in order to know how to convert core ticks to seconds, etc.
1389          */
1390         ret = t4_sge_init(adap);
1391         if (ret < 0) {
1392                 dev_err(adap, "t4_sge_init failed with error %d\n",
1393                         -ret);
1394                 goto bye;
1395         }
1396
1397         /*
1398          * Grab some of our basic fundamental operating parameters.
1399          */
1400         params[0] = CXGBE_FW_PARAM_PFVF(L2T_START);
1401         params[1] = CXGBE_FW_PARAM_PFVF(L2T_END);
1402         params[2] = CXGBE_FW_PARAM_PFVF(FILTER_START);
1403         params[3] = CXGBE_FW_PARAM_PFVF(FILTER_END);
1404         ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 4, params, val);
1405         if (ret < 0)
1406                 goto bye;
1407         adap->l2t_start = val[0];
1408         adap->l2t_end = val[1];
1409         adap->tids.ftid_base = val[2];
1410         adap->tids.nftids = val[3] - val[2] + 1;
1411
1412         params[0] = CXGBE_FW_PARAM_PFVF(CLIP_START);
1413         params[1] = CXGBE_FW_PARAM_PFVF(CLIP_END);
1414         ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 2, params, val);
1415         if (ret < 0)
1416                 goto bye;
1417         adap->clipt_start = val[0];
1418         adap->clipt_end = val[1];
1419
1420         /*
1421          * Get device capabilities so we can determine what resources we need
1422          * to manage.
1423          */
1424         memset(&caps_cmd, 0, sizeof(caps_cmd));
1425         caps_cmd.op_to_write = htonl(V_FW_CMD_OP(FW_CAPS_CONFIG_CMD) |
1426                                      F_FW_CMD_REQUEST | F_FW_CMD_READ);
1427         caps_cmd.cfvalid_to_len16 = htonl(FW_LEN16(caps_cmd));
1428         ret = t4_wr_mbox(adap, adap->mbox, &caps_cmd, sizeof(caps_cmd),
1429                          &caps_cmd);
1430         if (ret < 0)
1431                 goto bye;
1432
1433         if ((caps_cmd.niccaps & cpu_to_be16(FW_CAPS_CONFIG_NIC_HASHFILTER)) &&
1434             is_t6(adap->params.chip)) {
1435                 if (cxgbe_init_hash_filter(adap) < 0)
1436                         goto bye;
1437         }
1438
1439         /* See if FW supports FW_FILTER2 work request */
1440         if (is_t4(adap->params.chip)) {
1441                 adap->params.filter2_wr_support = 0;
1442         } else {
1443                 params[0] = CXGBE_FW_PARAM_DEV(FILTER2_WR);
1444                 ret = t4_query_params(adap, adap->mbox, adap->pf, 0,
1445                                       1, params, val);
1446                 adap->params.filter2_wr_support = (ret == 0 && val[0] != 0);
1447         }
1448
1449         /* Check if FW supports returning vin.
1450          * If this is not supported, driver will interpret
1451          * these values from viid.
1452          */
1453         params[0] = CXGBE_FW_PARAM_DEV(OPAQUE_VIID_SMT_EXTN);
1454         ret = t4_query_params(adap, adap->mbox, adap->pf, 0,
1455                               1, params, val);
1456         adap->params.viid_smt_extn_support = (ret == 0 && val[0] != 0);
1457
1458         /* query tid-related parameters */
1459         params[0] = CXGBE_FW_PARAM_DEV(NTID);
1460         ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1,
1461                               params, val);
1462         if (ret < 0)
1463                 goto bye;
1464         adap->tids.ntids = val[0];
1465         adap->tids.natids = min(adap->tids.ntids / 2, MAX_ATIDS);
1466
1467         /* If we're running on newer firmware, let it know that we're
1468          * prepared to deal with encapsulated CPL messages.  Older
1469          * firmware won't understand this and we'll just get
1470          * unencapsulated messages ...
1471          */
1472         params[0] = CXGBE_FW_PARAM_PFVF(CPLFW4MSG_ENCAP);
1473         val[0] = 1;
1474         (void)t4_set_params(adap, adap->mbox, adap->pf, 0, 1, params, val);
1475
1476         /*
1477          * Find out whether we're allowed to use the T5+ ULPTX MEMWRITE DSGL
1478          * capability.  Earlier versions of the firmware didn't have the
1479          * ULPTX_MEMWRITE_DSGL so we'll interpret a query failure as no
1480          * permission to use ULPTX MEMWRITE DSGL.
1481          */
1482         if (is_t4(adap->params.chip)) {
1483                 adap->params.ulptx_memwrite_dsgl = false;
1484         } else {
1485                 params[0] = CXGBE_FW_PARAM_DEV(ULPTX_MEMWRITE_DSGL);
1486                 ret = t4_query_params(adap, adap->mbox, adap->pf, 0,
1487                                       1, params, val);
1488                 adap->params.ulptx_memwrite_dsgl = (ret == 0 && val[0] != 0);
1489         }
1490
1491         /* Query for max number of packets that can be coalesced for Tx */
1492         params[0] = CXGBE_FW_PARAM_PFVF(MAX_PKTS_PER_ETH_TX_PKTS_WR);
1493         ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1, params, val);
1494         if (!ret && val[0] > 0)
1495                 adap->params.max_tx_coalesce_num = val[0];
1496         else
1497                 adap->params.max_tx_coalesce_num = ETH_COALESCE_PKT_NUM;
1498
1499         /*
1500          * The MTU/MSS Table is initialized by now, so load their values.  If
1501          * we're initializing the adapter, then we'll make any modifications
1502          * we want to the MTU/MSS Table and also initialize the congestion
1503          * parameters.
1504          */
1505         t4_read_mtu_tbl(adap, adap->params.mtus, NULL);
1506         if (state != DEV_STATE_INIT) {
1507                 int i;
1508
1509                 /*
1510                  * The default MTU Table contains values 1492 and 1500.
1511                  * However, for TCP, it's better to have two values which are
1512                  * a multiple of 8 +/- 4 bytes apart near this popular MTU.
1513                  * This allows us to have a TCP Data Payload which is a
1514                  * multiple of 8 regardless of what combination of TCP Options
1515                  * are in use (always a multiple of 4 bytes) which is
1516                  * important for performance reasons.  For instance, if no
1517                  * options are in use, then we have a 20-byte IP header and a
1518                  * 20-byte TCP header.  In this case, a 1500-byte MSS would
1519                  * result in a TCP Data Payload of 1500 - 40 == 1460 bytes
1520                  * which is not a multiple of 8.  So using an MSS of 1488 in
1521                  * this case results in a TCP Data Payload of 1448 bytes which
1522                  * is a multiple of 8.  On the other hand, if 12-byte TCP Time
1523                  * Stamps have been negotiated, then an MTU of 1500 bytes
1524                  * results in a TCP Data Payload of 1448 bytes which, as
1525                  * above, is a multiple of 8 bytes ...
1526                  */
1527                 for (i = 0; i < NMTUS; i++)
1528                         if (adap->params.mtus[i] == 1492) {
1529                                 adap->params.mtus[i] = 1488;
1530                                 break;
1531                         }
1532
1533                 t4_load_mtus(adap, adap->params.mtus, adap->params.a_wnd,
1534                              adap->params.b_wnd);
1535         }
1536         t4_init_sge_params(adap);
1537         ret = configure_filter_mode_mask(adap);
1538         if (ret < 0)
1539                 goto bye;
1540         t4_init_tp_params(adap);
1541         configure_pcie_ext_tag(adap);
1542         configure_vlan_types(adap);
1543         cxgbe_configure_max_ethqsets(adap);
1544
1545         adap->params.drv_memwin = MEMWIN_NIC;
1546         adap->flags |= FW_OK;
1547         dev_debug(adap, "%s: returning zero..\n", __func__);
1548         return 0;
1549
1550         /*
1551          * Something bad happened.  If a command timed out or failed with EIO
1552          * FW does not operate within its spec or something catastrophic
1553          * happened to HW/FW, stop issuing commands.
1554          */
1555 bye:
1556         if (ret != -ETIMEDOUT && ret != -EIO)
1557                 t4_fw_bye(adap, adap->mbox);
1558         return ret;
1559 }
1560
1561 /**
1562  * t4_os_portmod_changed - handle port module changes
1563  * @adap: the adapter associated with the module change
1564  * @port_id: the port index whose module status has changed
1565  *
1566  * This is the OS-dependent handler for port module changes.  It is
1567  * invoked when a port module is removed or inserted for any OS-specific
1568  * processing.
1569  */
1570 void t4_os_portmod_changed(const struct adapter *adap, int port_id)
1571 {
1572         static const char * const mod_str[] = {
1573                 NULL, "LR", "SR", "ER", "passive DA", "active DA", "LRM"
1574         };
1575
1576         const struct port_info *pi = adap2pinfo(adap, port_id);
1577
1578         if (pi->link_cfg.mod_type == FW_PORT_MOD_TYPE_NONE)
1579                 dev_info(adap, "Port%d: port module unplugged\n", pi->port_id);
1580         else if (pi->link_cfg.mod_type < ARRAY_SIZE(mod_str))
1581                 dev_info(adap, "Port%d: %s port module inserted\n", pi->port_id,
1582                          mod_str[pi->link_cfg.mod_type]);
1583         else if (pi->link_cfg.mod_type == FW_PORT_MOD_TYPE_NOTSUPPORTED)
1584                 dev_info(adap, "Port%d: unsupported port module inserted\n",
1585                          pi->port_id);
1586         else if (pi->link_cfg.mod_type == FW_PORT_MOD_TYPE_UNKNOWN)
1587                 dev_info(adap, "Port%d: unknown port module inserted\n",
1588                          pi->port_id);
1589         else if (pi->link_cfg.mod_type == FW_PORT_MOD_TYPE_ERROR)
1590                 dev_info(adap, "Port%d: transceiver module error\n",
1591                          pi->port_id);
1592         else
1593                 dev_info(adap, "Port%d: unknown module type %d inserted\n",
1594                          pi->port_id, pi->link_cfg.mod_type);
1595 }
1596
1597 bool cxgbe_force_linkup(struct adapter *adap)
1598 {
1599         if (is_pf4(adap))
1600                 return false;   /* force_linkup not required for pf driver */
1601
1602         return adap->devargs.force_link_up;
1603 }
1604
1605 /**
1606  * link_start - enable a port
1607  * @dev: the port to enable
1608  *
1609  * Performs the MAC and PHY actions needed to enable a port.
1610  */
1611 int cxgbe_link_start(struct port_info *pi)
1612 {
1613         struct adapter *adapter = pi->adapter;
1614         u64 conf_offloads;
1615         unsigned int mtu;
1616         int ret;
1617
1618         mtu = pi->eth_dev->data->dev_conf.rxmode.max_rx_pkt_len -
1619               (RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN);
1620
1621         conf_offloads = pi->eth_dev->data->dev_conf.rxmode.offloads;
1622
1623         /*
1624          * We do not set address filters and promiscuity here, the stack does
1625          * that step explicitly.
1626          */
1627         ret = t4_set_rxmode(adapter, adapter->mbox, pi->viid, mtu, -1, -1, -1,
1628                             !!(conf_offloads & DEV_RX_OFFLOAD_VLAN_STRIP),
1629                             true);
1630         if (ret == 0) {
1631                 ret = cxgbe_mpstcam_modify(pi, (int)pi->xact_addr_filt,
1632                                 (u8 *)&pi->eth_dev->data->mac_addrs[0]);
1633                 if (ret >= 0) {
1634                         pi->xact_addr_filt = ret;
1635                         ret = 0;
1636                 }
1637         }
1638         if (ret == 0 && is_pf4(adapter))
1639                 ret = t4_link_l1cfg(pi, pi->link_cfg.admin_caps);
1640         if (ret == 0) {
1641                 /*
1642                  * Enabling a Virtual Interface can result in an interrupt
1643                  * during the processing of the VI Enable command and, in some
1644                  * paths, result in an attempt to issue another command in the
1645                  * interrupt context.  Thus, we disable interrupts during the
1646                  * course of the VI Enable command ...
1647                  */
1648                 ret = t4_enable_vi_params(adapter, adapter->mbox, pi->viid,
1649                                           true, true, false);
1650         }
1651
1652         if (ret == 0 && cxgbe_force_linkup(adapter))
1653                 pi->eth_dev->data->dev_link.link_status = ETH_LINK_UP;
1654         return ret;
1655 }
1656
1657 /**
1658  * cxgbe_write_rss_conf - flash the RSS configuration for a given port
1659  * @pi: the port
1660  * @rss_hf: Hash configuration to apply
1661  */
1662 int cxgbe_write_rss_conf(const struct port_info *pi, uint64_t rss_hf)
1663 {
1664         struct adapter *adapter = pi->adapter;
1665         const struct sge_eth_rxq *rxq;
1666         u64 flags = 0;
1667         u16 rss;
1668         int err;
1669
1670         /*  Should never be called before setting up sge eth rx queues */
1671         if (!(adapter->flags & FULL_INIT_DONE)) {
1672                 dev_err(adap, "%s No RXQs available on port %d\n",
1673                         __func__, pi->port_id);
1674                 return -EINVAL;
1675         }
1676
1677         /* Don't allow unsupported hash functions */
1678         if (rss_hf & ~CXGBE_RSS_HF_ALL)
1679                 return -EINVAL;
1680
1681         if (rss_hf & CXGBE_RSS_HF_IPV4_MASK)
1682                 flags |= F_FW_RSS_VI_CONFIG_CMD_IP4TWOTUPEN;
1683
1684         if (rss_hf & ETH_RSS_NONFRAG_IPV4_TCP)
1685                 flags |= F_FW_RSS_VI_CONFIG_CMD_IP4FOURTUPEN;
1686
1687         if (rss_hf & ETH_RSS_NONFRAG_IPV4_UDP)
1688                 flags |= F_FW_RSS_VI_CONFIG_CMD_IP4FOURTUPEN |
1689                          F_FW_RSS_VI_CONFIG_CMD_UDPEN;
1690
1691         if (rss_hf & CXGBE_RSS_HF_IPV6_MASK)
1692                 flags |= F_FW_RSS_VI_CONFIG_CMD_IP6TWOTUPEN;
1693
1694         if (rss_hf & CXGBE_RSS_HF_TCP_IPV6_MASK)
1695                 flags |= F_FW_RSS_VI_CONFIG_CMD_IP6TWOTUPEN |
1696                          F_FW_RSS_VI_CONFIG_CMD_IP6FOURTUPEN;
1697
1698         if (rss_hf & CXGBE_RSS_HF_UDP_IPV6_MASK)
1699                 flags |= F_FW_RSS_VI_CONFIG_CMD_IP6TWOTUPEN |
1700                          F_FW_RSS_VI_CONFIG_CMD_IP6FOURTUPEN |
1701                          F_FW_RSS_VI_CONFIG_CMD_UDPEN;
1702
1703         rxq = &adapter->sge.ethrxq[pi->first_rxqset];
1704         rss = rxq[0].rspq.abs_id;
1705
1706         /* If Tunnel All Lookup isn't specified in the global RSS
1707          * Configuration, then we need to specify a default Ingress
1708          * Queue for any ingress packets which aren't hashed.  We'll
1709          * use our first ingress queue ...
1710          */
1711         err = t4_config_vi_rss(adapter, adapter->mbox, pi->viid,
1712                                flags, rss);
1713         return err;
1714 }
1715
1716 /**
1717  * cxgbe_write_rss - write the RSS table for a given port
1718  * @pi: the port
1719  * @queues: array of queue indices for RSS
1720  *
1721  * Sets up the portion of the HW RSS table for the port's VI to distribute
1722  * packets to the Rx queues in @queues.
1723  */
1724 int cxgbe_write_rss(const struct port_info *pi, const u16 *queues)
1725 {
1726         u16 *rss;
1727         int i, err;
1728         struct adapter *adapter = pi->adapter;
1729         const struct sge_eth_rxq *rxq;
1730
1731         /*  Should never be called before setting up sge eth rx queues */
1732         BUG_ON(!(adapter->flags & FULL_INIT_DONE));
1733
1734         rxq = &adapter->sge.ethrxq[pi->first_rxqset];
1735         rss = rte_zmalloc(NULL, pi->rss_size * sizeof(u16), 0);
1736         if (!rss)
1737                 return -ENOMEM;
1738
1739         /* map the queue indices to queue ids */
1740         for (i = 0; i < pi->rss_size; i++, queues++)
1741                 rss[i] = rxq[*queues].rspq.abs_id;
1742
1743         err = t4_config_rss_range(adapter, adapter->pf, pi->viid, 0,
1744                                   pi->rss_size, rss, pi->rss_size);
1745         rte_free(rss);
1746         return err;
1747 }
1748
1749 /**
1750  * setup_rss - configure RSS
1751  * @adapter: the adapter
1752  *
1753  * Sets up RSS to distribute packets to multiple receive queues.  We
1754  * configure the RSS CPU lookup table to distribute to the number of HW
1755  * receive queues, and the response queue lookup table to narrow that
1756  * down to the response queues actually configured for each port.
1757  * We always configure the RSS mapping for all ports since the mapping
1758  * table has plenty of entries.
1759  */
1760 int cxgbe_setup_rss(struct port_info *pi)
1761 {
1762         int j, err;
1763         struct adapter *adapter = pi->adapter;
1764
1765         dev_debug(adapter, "%s:  pi->rss_size = %u; pi->n_rx_qsets = %u\n",
1766                   __func__, pi->rss_size, pi->n_rx_qsets);
1767
1768         if (!(pi->flags & PORT_RSS_DONE)) {
1769                 if (adapter->flags & FULL_INIT_DONE) {
1770                         /* Fill default values with equal distribution */
1771                         for (j = 0; j < pi->rss_size; j++)
1772                                 pi->rss[j] = j % pi->n_rx_qsets;
1773
1774                         err = cxgbe_write_rss(pi, pi->rss);
1775                         if (err)
1776                                 return err;
1777
1778                         err = cxgbe_write_rss_conf(pi, pi->rss_hf);
1779                         if (err)
1780                                 return err;
1781                         pi->flags |= PORT_RSS_DONE;
1782                 }
1783         }
1784         return 0;
1785 }
1786
1787 /*
1788  * Enable NAPI scheduling and interrupt generation for all Rx queues.
1789  */
1790 static void enable_rx(struct adapter *adap, struct sge_rspq *q)
1791 {
1792         /* 0-increment GTS to start the timer and enable interrupts */
1793         t4_write_reg(adap, is_pf4(adap) ? MYPF_REG(A_SGE_PF_GTS) :
1794                                           T4VF_SGE_BASE_ADDR + A_SGE_VF_GTS,
1795                      V_SEINTARM(q->intr_params) |
1796                      V_INGRESSQID(q->cntxt_id));
1797 }
1798
1799 void cxgbe_enable_rx_queues(struct port_info *pi)
1800 {
1801         struct adapter *adap = pi->adapter;
1802         struct sge *s = &adap->sge;
1803         unsigned int i;
1804
1805         for (i = 0; i < pi->n_rx_qsets; i++)
1806                 enable_rx(adap, &s->ethrxq[pi->first_rxqset + i].rspq);
1807 }
1808
1809 /**
1810  * fw_caps_to_speed_caps - translate Firmware Port Caps to Speed Caps.
1811  * @port_type: Firmware Port Type
1812  * @fw_caps: Firmware Port Capabilities
1813  * @speed_caps: Device Info Speed Capabilities
1814  *
1815  * Translate a Firmware Port Capabilities specification to Device Info
1816  * Speed Capabilities.
1817  */
1818 static void fw_caps_to_speed_caps(enum fw_port_type port_type,
1819                                   unsigned int fw_caps,
1820                                   u32 *speed_caps)
1821 {
1822 #define SET_SPEED(__speed_name) \
1823         do { \
1824                 *speed_caps |= ETH_LINK_ ## __speed_name; \
1825         } while (0)
1826
1827 #define FW_CAPS_TO_SPEED(__fw_name) \
1828         do { \
1829                 if (fw_caps & FW_PORT_CAP32_ ## __fw_name) \
1830                         SET_SPEED(__fw_name); \
1831         } while (0)
1832
1833         switch (port_type) {
1834         case FW_PORT_TYPE_BT_SGMII:
1835         case FW_PORT_TYPE_BT_XFI:
1836         case FW_PORT_TYPE_BT_XAUI:
1837                 FW_CAPS_TO_SPEED(SPEED_100M);
1838                 FW_CAPS_TO_SPEED(SPEED_1G);
1839                 FW_CAPS_TO_SPEED(SPEED_10G);
1840                 break;
1841
1842         case FW_PORT_TYPE_KX4:
1843         case FW_PORT_TYPE_KX:
1844         case FW_PORT_TYPE_FIBER_XFI:
1845         case FW_PORT_TYPE_FIBER_XAUI:
1846         case FW_PORT_TYPE_SFP:
1847         case FW_PORT_TYPE_QSFP_10G:
1848         case FW_PORT_TYPE_QSA:
1849                 FW_CAPS_TO_SPEED(SPEED_1G);
1850                 FW_CAPS_TO_SPEED(SPEED_10G);
1851                 break;
1852
1853         case FW_PORT_TYPE_KR:
1854                 SET_SPEED(SPEED_10G);
1855                 break;
1856
1857         case FW_PORT_TYPE_BP_AP:
1858         case FW_PORT_TYPE_BP4_AP:
1859                 SET_SPEED(SPEED_1G);
1860                 SET_SPEED(SPEED_10G);
1861                 break;
1862
1863         case FW_PORT_TYPE_BP40_BA:
1864         case FW_PORT_TYPE_QSFP:
1865                 SET_SPEED(SPEED_40G);
1866                 break;
1867
1868         case FW_PORT_TYPE_CR_QSFP:
1869         case FW_PORT_TYPE_SFP28:
1870         case FW_PORT_TYPE_KR_SFP28:
1871                 FW_CAPS_TO_SPEED(SPEED_1G);
1872                 FW_CAPS_TO_SPEED(SPEED_10G);
1873                 FW_CAPS_TO_SPEED(SPEED_25G);
1874                 break;
1875
1876         case FW_PORT_TYPE_CR2_QSFP:
1877                 SET_SPEED(SPEED_50G);
1878                 break;
1879
1880         case FW_PORT_TYPE_KR4_100G:
1881         case FW_PORT_TYPE_CR4_QSFP:
1882                 FW_CAPS_TO_SPEED(SPEED_25G);
1883                 FW_CAPS_TO_SPEED(SPEED_40G);
1884                 FW_CAPS_TO_SPEED(SPEED_50G);
1885                 FW_CAPS_TO_SPEED(SPEED_100G);
1886                 break;
1887
1888         default:
1889                 break;
1890         }
1891
1892 #undef FW_CAPS_TO_SPEED
1893 #undef SET_SPEED
1894 }
1895
1896 /**
1897  * cxgbe_get_speed_caps - Fetch supported speed capabilities
1898  * @pi: Underlying port's info
1899  * @speed_caps: Device Info speed capabilities
1900  *
1901  * Fetch supported speed capabilities of the underlying port.
1902  */
1903 void cxgbe_get_speed_caps(struct port_info *pi, u32 *speed_caps)
1904 {
1905         *speed_caps = 0;
1906
1907         fw_caps_to_speed_caps(pi->link_cfg.port_type, pi->link_cfg.pcaps,
1908                               speed_caps);
1909
1910         if (!(pi->link_cfg.pcaps & FW_PORT_CAP32_ANEG))
1911                 *speed_caps |= ETH_LINK_SPEED_FIXED;
1912 }
1913
1914 /**
1915  * cxgbe_set_link_status - Set device link up or down.
1916  * @pi: Underlying port's info
1917  * @status: 0 - down, 1 - up
1918  *
1919  * Set the device link up or down.
1920  */
1921 int cxgbe_set_link_status(struct port_info *pi, bool status)
1922 {
1923         struct adapter *adapter = pi->adapter;
1924         int err = 0;
1925
1926         err = t4_enable_vi(adapter, adapter->mbox, pi->viid, status, status);
1927         if (err) {
1928                 dev_err(adapter, "%s: disable_vi failed: %d\n", __func__, err);
1929                 return err;
1930         }
1931
1932         if (!status)
1933                 t4_reset_link_config(adapter, pi->pidx);
1934
1935         return 0;
1936 }
1937
1938 /**
1939  * cxgb_up - enable the adapter
1940  * @adap: adapter being enabled
1941  *
1942  * Called when the first port is enabled, this function performs the
1943  * actions necessary to make an adapter operational, such as completing
1944  * the initialization of HW modules, and enabling interrupts.
1945  */
1946 int cxgbe_up(struct adapter *adap)
1947 {
1948         enable_rx(adap, &adap->sge.fw_evtq);
1949         t4_sge_tx_monitor_start(adap);
1950         if (is_pf4(adap))
1951                 t4_intr_enable(adap);
1952         adap->flags |= FULL_INIT_DONE;
1953
1954         /* TODO: deadman watchdog ?? */
1955         return 0;
1956 }
1957
1958 /*
1959  * Close the port
1960  */
1961 int cxgbe_down(struct port_info *pi)
1962 {
1963         return cxgbe_set_link_status(pi, false);
1964 }
1965
1966 /*
1967  * Release resources when all the ports have been stopped.
1968  */
1969 void cxgbe_close(struct adapter *adapter)
1970 {
1971         if (adapter->flags & FULL_INIT_DONE) {
1972                 tid_free(&adapter->tids);
1973                 t4_cleanup_mpstcam(adapter);
1974                 t4_cleanup_clip_tbl(adapter);
1975                 t4_cleanup_l2t(adapter);
1976                 t4_cleanup_smt(adapter);
1977                 if (is_pf4(adapter))
1978                         t4_intr_disable(adapter);
1979                 t4_sge_tx_monitor_stop(adapter);
1980                 t4_free_sge_resources(adapter);
1981                 adapter->flags &= ~FULL_INIT_DONE;
1982         }
1983
1984         cxgbe_cfg_queues_free(adapter);
1985
1986         if (is_pf4(adapter) && (adapter->flags & FW_OK))
1987                 t4_fw_bye(adapter, adapter->mbox);
1988 }
1989
1990 static void adap_smt_index(struct adapter *adapter, u32 *smt_start_idx,
1991                            u32 *smt_size)
1992 {
1993         u32 params[2], smt_val[2];
1994         int ret;
1995
1996         params[0] = CXGBE_FW_PARAM_PFVF(GET_SMT_START);
1997         params[1] = CXGBE_FW_PARAM_PFVF(GET_SMT_SIZE);
1998
1999         ret = t4_query_params(adapter, adapter->mbox, adapter->pf, 0,
2000                               2, params, smt_val);
2001
2002         /* if FW doesn't recognize this command then set it to default setting
2003          * which is start index as 0 and size as 256.
2004          */
2005         if (ret < 0) {
2006                 *smt_start_idx = 0;
2007                 *smt_size = SMT_SIZE;
2008         } else {
2009                 *smt_start_idx = smt_val[0];
2010                 /* smt size can be zero, if nsmt is not yet configured in
2011                  * the config file or set as zero, then configure all the
2012                  * remaining entries to this PF itself.
2013                  */
2014                 if (!smt_val[1])
2015                         *smt_size = SMT_SIZE - *smt_start_idx;
2016                 else
2017                         *smt_size = smt_val[1];
2018         }
2019 }
2020
2021 int cxgbe_probe(struct adapter *adapter)
2022 {
2023         u32 smt_start_idx, smt_size;
2024         struct port_info *pi;
2025         int func, i;
2026         int err = 0;
2027         u32 whoami;
2028         int chip;
2029
2030         whoami = t4_read_reg(adapter, A_PL_WHOAMI);
2031         chip = t4_get_chip_type(adapter,
2032                         CHELSIO_PCI_ID_VER(adapter->pdev->id.device_id));
2033         if (chip < 0)
2034                 return chip;
2035
2036         func = CHELSIO_CHIP_VERSION(chip) <= CHELSIO_T5 ?
2037                G_SOURCEPF(whoami) : G_T6_SOURCEPF(whoami);
2038
2039         adapter->mbox = func;
2040         adapter->pf = func;
2041
2042         t4_os_lock_init(&adapter->mbox_lock);
2043         TAILQ_INIT(&adapter->mbox_list);
2044         t4_os_lock_init(&adapter->win0_lock);
2045
2046         err = t4_prep_adapter(adapter);
2047         if (err)
2048                 return err;
2049
2050         setup_memwin(adapter);
2051         err = adap_init0(adapter);
2052         if (err) {
2053                 dev_err(adapter, "%s: Adapter initialization failed, error %d\n",
2054                         __func__, err);
2055                 goto out_free;
2056         }
2057
2058         if (!is_t4(adapter->params.chip)) {
2059                 /*
2060                  * The userspace doorbell BAR is split evenly into doorbell
2061                  * regions, each associated with an egress queue.  If this
2062                  * per-queue region is large enough (at least UDBS_SEG_SIZE)
2063                  * then it can be used to submit a tx work request with an
2064                  * implied doorbell.  Enable write combining on the BAR if
2065                  * there is room for such work requests.
2066                  */
2067                 int s_qpp, qpp, num_seg;
2068
2069                 s_qpp = (S_QUEUESPERPAGEPF0 +
2070                         (S_QUEUESPERPAGEPF1 - S_QUEUESPERPAGEPF0) *
2071                         adapter->pf);
2072                 qpp = 1 << ((t4_read_reg(adapter,
2073                                 A_SGE_EGRESS_QUEUES_PER_PAGE_PF) >> s_qpp)
2074                                 & M_QUEUESPERPAGEPF0);
2075                 num_seg = CXGBE_PAGE_SIZE / UDBS_SEG_SIZE;
2076                 if (qpp > num_seg)
2077                         dev_warn(adapter, "Incorrect SGE EGRESS QUEUES_PER_PAGE configuration, continuing in debug mode\n");
2078
2079                 adapter->bar2 = (void *)adapter->pdev->mem_resource[2].addr;
2080                 if (!adapter->bar2) {
2081                         dev_err(adapter, "cannot map device bar2 region\n");
2082                         err = -ENOMEM;
2083                         goto out_free;
2084                 }
2085                 t4_write_reg(adapter, A_SGE_STAT_CFG, V_STATSOURCE_T5(7) |
2086                              V_STATMODE(0));
2087         }
2088
2089         for_each_port(adapter, i) {
2090                 const unsigned int numa_node = rte_socket_id();
2091                 char name[RTE_ETH_NAME_MAX_LEN];
2092                 struct rte_eth_dev *eth_dev;
2093
2094                 snprintf(name, sizeof(name), "%s_%d",
2095                          adapter->pdev->device.name, i);
2096
2097                 if (i == 0) {
2098                         /* First port is already allocated by DPDK */
2099                         eth_dev = adapter->eth_dev;
2100                         goto allocate_mac;
2101                 }
2102
2103                 /*
2104                  * now do all data allocation - for eth_dev structure,
2105                  * and internal (private) data for the remaining ports
2106                  */
2107
2108                 /* reserve an ethdev entry */
2109                 eth_dev = rte_eth_dev_allocate(name);
2110                 if (!eth_dev)
2111                         goto out_free;
2112
2113                 eth_dev->data->dev_private =
2114                         rte_zmalloc_socket(name, sizeof(struct port_info),
2115                                            RTE_CACHE_LINE_SIZE, numa_node);
2116                 if (!eth_dev->data->dev_private)
2117                         goto out_free;
2118
2119 allocate_mac:
2120                 pi = eth_dev->data->dev_private;
2121                 adapter->port[i] = pi;
2122                 pi->eth_dev = eth_dev;
2123                 pi->adapter = adapter;
2124                 pi->xact_addr_filt = -1;
2125                 pi->port_id = i;
2126                 pi->pidx = i;
2127
2128                 pi->eth_dev->device = &adapter->pdev->device;
2129                 pi->eth_dev->dev_ops = adapter->eth_dev->dev_ops;
2130                 pi->eth_dev->tx_pkt_burst = adapter->eth_dev->tx_pkt_burst;
2131                 pi->eth_dev->rx_pkt_burst = adapter->eth_dev->rx_pkt_burst;
2132
2133                 rte_eth_copy_pci_info(pi->eth_dev, adapter->pdev);
2134
2135                 pi->eth_dev->data->mac_addrs = rte_zmalloc(name,
2136                                                         RTE_ETHER_ADDR_LEN, 0);
2137                 if (!pi->eth_dev->data->mac_addrs) {
2138                         dev_err(adapter, "%s: Mem allocation failed for storing mac addr, aborting\n",
2139                                 __func__);
2140                         err = -1;
2141                         goto out_free;
2142                 }
2143
2144                 if (i > 0) {
2145                         /* First port will be notified by upper layer */
2146                         rte_eth_dev_probing_finish(eth_dev);
2147                 }
2148         }
2149
2150         if (adapter->flags & FW_OK) {
2151                 err = t4_port_init(adapter, adapter->mbox, adapter->pf, 0);
2152                 if (err) {
2153                         dev_err(adapter, "%s: t4_port_init failed with err %d\n",
2154                                 __func__, err);
2155                         goto out_free;
2156                 }
2157         }
2158
2159         err = cxgbe_cfg_queues(adapter->eth_dev);
2160         if (err)
2161                 goto out_free;
2162
2163         cxgbe_print_adapter_info(adapter);
2164         cxgbe_print_port_info(adapter);
2165
2166         adapter->clipt = t4_init_clip_tbl(adapter->clipt_start,
2167                                           adapter->clipt_end);
2168         if (!adapter->clipt) {
2169                 /* We tolerate a lack of clip_table, giving up some
2170                  * functionality
2171                  */
2172                 dev_warn(adapter, "could not allocate CLIP. Continuing\n");
2173         }
2174
2175         adap_smt_index(adapter, &smt_start_idx, &smt_size);
2176         adapter->smt = t4_init_smt(smt_start_idx, smt_size);
2177         if (!adapter->smt)
2178                 dev_warn(adapter, "could not allocate SMT, continuing\n");
2179
2180         adapter->l2t = t4_init_l2t(adapter->l2t_start, adapter->l2t_end);
2181         if (!adapter->l2t) {
2182                 /* We tolerate a lack of L2T, giving up some functionality */
2183                 dev_warn(adapter, "could not allocate L2T. Continuing\n");
2184         }
2185
2186         if (tid_init(&adapter->tids) < 0) {
2187                 /* Disable filtering support */
2188                 dev_warn(adapter, "could not allocate TID table, "
2189                          "filter support disabled. Continuing\n");
2190         }
2191
2192         t4_os_lock_init(&adapter->flow_lock);
2193
2194         adapter->mpstcam = t4_init_mpstcam(adapter);
2195         if (!adapter->mpstcam)
2196                 dev_warn(adapter, "could not allocate mps tcam table."
2197                          " Continuing\n");
2198
2199         if (is_hashfilter(adapter)) {
2200                 if (t4_read_reg(adapter, A_LE_DB_CONFIG) & F_HASHEN) {
2201                         u32 hash_base, hash_reg;
2202
2203                         hash_reg = A_LE_DB_TID_HASHBASE;
2204                         hash_base = t4_read_reg(adapter, hash_reg);
2205                         adapter->tids.hash_base = hash_base / 4;
2206                 }
2207         } else {
2208                 /* Disable hash filtering support */
2209                 dev_warn(adapter,
2210                          "Maskless filter support disabled. Continuing\n");
2211         }
2212
2213         err = cxgbe_init_rss(adapter);
2214         if (err)
2215                 goto out_free;
2216
2217         return 0;
2218
2219 out_free:
2220         cxgbe_cfg_queues_free(adapter);
2221
2222         for_each_port(adapter, i) {
2223                 pi = adap2pinfo(adapter, i);
2224                 if (pi->viid != 0)
2225                         t4_free_vi(adapter, adapter->mbox, adapter->pf,
2226                                    0, pi->viid);
2227                 rte_eth_dev_release_port(pi->eth_dev);
2228         }
2229
2230         if (adapter->flags & FW_OK)
2231                 t4_fw_bye(adapter, adapter->mbox);
2232         return -err;
2233 }