drivers/net/ethernet/pensando/ionic/ionic_main.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright(c) 2017 - 2019 Pensando Systems, Inc */
   3
   4 #include <linux/printk.h>
   5 #include <linux/dynamic_debug.h>
   6 #include <linux/module.h>
   7 #include <linux/netdevice.h>
   8 #include <linux/utsname.h>
   9 #include <generated/utsrelease.h>
  10 #include <linux/ctype.h>
  11
  12 #include "ionic.h"
  13 #include "ionic_bus.h"
  14 #include "ionic_lif.h"
  15 #include "ionic_debugfs.h"
  16
  17 MODULE_DESCRIPTION(IONIC_DRV_DESCRIPTION);
  18 MODULE_AUTHOR("Pensando Systems, Inc");
  19 MODULE_LICENSE("GPL");
  20
  21 static const char *ionic_error_to_str(enum ionic_status_code code)
  22 {
  23         switch (code) {
  24         case IONIC_RC_SUCCESS:
  25                 return "IONIC_RC_SUCCESS";
  26         case IONIC_RC_EVERSION:
  27                 return "IONIC_RC_EVERSION";
  28         case IONIC_RC_EOPCODE:
  29                 return "IONIC_RC_EOPCODE";
  30         case IONIC_RC_EIO:
  31                 return "IONIC_RC_EIO";
  32         case IONIC_RC_EPERM:
  33                 return "IONIC_RC_EPERM";
  34         case IONIC_RC_EQID:
  35                 return "IONIC_RC_EQID";
  36         case IONIC_RC_EQTYPE:
  37                 return "IONIC_RC_EQTYPE";
  38         case IONIC_RC_ENOENT:
  39                 return "IONIC_RC_ENOENT";
  40         case IONIC_RC_EINTR:
  41                 return "IONIC_RC_EINTR";
  42         case IONIC_RC_EAGAIN:
  43                 return "IONIC_RC_EAGAIN";
  44         case IONIC_RC_ENOMEM:
  45                 return "IONIC_RC_ENOMEM";
  46         case IONIC_RC_EFAULT:
  47                 return "IONIC_RC_EFAULT";
  48         case IONIC_RC_EBUSY:
  49                 return "IONIC_RC_EBUSY";
  50         case IONIC_RC_EEXIST:
  51                 return "IONIC_RC_EEXIST";
  52         case IONIC_RC_EINVAL:
  53                 return "IONIC_RC_EINVAL";
  54         case IONIC_RC_ENOSPC:
  55                 return "IONIC_RC_ENOSPC";
  56         case IONIC_RC_ERANGE:
  57                 return "IONIC_RC_ERANGE";
  58         case IONIC_RC_BAD_ADDR:
  59                 return "IONIC_RC_BAD_ADDR";
  60         case IONIC_RC_DEV_CMD:
  61                 return "IONIC_RC_DEV_CMD";
  62         case IONIC_RC_ENOSUPP:
  63                 return "IONIC_RC_ENOSUPP";
  64         case IONIC_RC_ERROR:
  65                 return "IONIC_RC_ERROR";
  66         case IONIC_RC_ERDMA:
  67                 return "IONIC_RC_ERDMA";
  68         case IONIC_RC_EBAD_FW:
  69                 return "IONIC_RC_EBAD_FW";
  70         default:
  71                 return "IONIC_RC_UNKNOWN";
  72         }
  73 }
  74
  75 static int ionic_error_to_errno(enum ionic_status_code code)
  76 {
  77         switch (code) {
  78         case IONIC_RC_SUCCESS:
  79                 return 0;
  80         case IONIC_RC_EVERSION:
  81         case IONIC_RC_EQTYPE:
  82         case IONIC_RC_EQID:
  83         case IONIC_RC_EINVAL:
  84         case IONIC_RC_ENOSUPP:
  85                 return -EINVAL;
  86         case IONIC_RC_EPERM:
  87                 return -EPERM;
  88         case IONIC_RC_ENOENT:
  89                 return -ENOENT;
  90         case IONIC_RC_EAGAIN:
  91                 return -EAGAIN;
  92         case IONIC_RC_ENOMEM:
  93                 return -ENOMEM;
  94         case IONIC_RC_EFAULT:
  95                 return -EFAULT;
  96         case IONIC_RC_EBUSY:
  97                 return -EBUSY;
  98         case IONIC_RC_EEXIST:
  99                 return -EEXIST;
 100         case IONIC_RC_ENOSPC:
 101                 return -ENOSPC;
 102         case IONIC_RC_ERANGE:
 103                 return -ERANGE;
 104         case IONIC_RC_BAD_ADDR:
 105                 return -EFAULT;
 106         case IONIC_RC_EOPCODE:
 107         case IONIC_RC_EINTR:
 108         case IONIC_RC_DEV_CMD:
 109         case IONIC_RC_ERROR:
 110         case IONIC_RC_ERDMA:
 111         case IONIC_RC_EIO:
 112         default:
 113                 return -EIO;
 114         }
 115 }
 116
 117 static const char *ionic_opcode_to_str(enum ionic_cmd_opcode opcode)
 118 {
 119         switch (opcode) {
 120         case IONIC_CMD_NOP:
 121                 return "IONIC_CMD_NOP";
 122         case IONIC_CMD_INIT:
 123                 return "IONIC_CMD_INIT";
 124         case IONIC_CMD_RESET:
 125                 return "IONIC_CMD_RESET";
 126         case IONIC_CMD_IDENTIFY:
 127                 return "IONIC_CMD_IDENTIFY";
 128         case IONIC_CMD_GETATTR:
 129                 return "IONIC_CMD_GETATTR";
 130         case IONIC_CMD_SETATTR:
 131                 return "IONIC_CMD_SETATTR";
 132         case IONIC_CMD_PORT_IDENTIFY:
 133                 return "IONIC_CMD_PORT_IDENTIFY";
 134         case IONIC_CMD_PORT_INIT:
 135                 return "IONIC_CMD_PORT_INIT";
 136         case IONIC_CMD_PORT_RESET:
 137                 return "IONIC_CMD_PORT_RESET";
 138         case IONIC_CMD_PORT_GETATTR:
 139                 return "IONIC_CMD_PORT_GETATTR";
 140         case IONIC_CMD_PORT_SETATTR:
 141                 return "IONIC_CMD_PORT_SETATTR";
 142         case IONIC_CMD_LIF_INIT:
 143                 return "IONIC_CMD_LIF_INIT";
 144         case IONIC_CMD_LIF_RESET:
 145                 return "IONIC_CMD_LIF_RESET";
 146         case IONIC_CMD_LIF_IDENTIFY:
 147                 return "IONIC_CMD_LIF_IDENTIFY";
 148         case IONIC_CMD_LIF_SETATTR:
 149                 return "IONIC_CMD_LIF_SETATTR";
 150         case IONIC_CMD_LIF_GETATTR:
 151                 return "IONIC_CMD_LIF_GETATTR";
 152         case IONIC_CMD_LIF_SETPHC:
 153                 return "IONIC_CMD_LIF_SETPHC";
 154         case IONIC_CMD_RX_MODE_SET:
 155                 return "IONIC_CMD_RX_MODE_SET";
 156         case IONIC_CMD_RX_FILTER_ADD:
 157                 return "IONIC_CMD_RX_FILTER_ADD";
 158         case IONIC_CMD_RX_FILTER_DEL:
 159                 return "IONIC_CMD_RX_FILTER_DEL";
 160         case IONIC_CMD_Q_IDENTIFY:
 161                 return "IONIC_CMD_Q_IDENTIFY";
 162         case IONIC_CMD_Q_INIT:
 163                 return "IONIC_CMD_Q_INIT";
 164         case IONIC_CMD_Q_CONTROL:
 165                 return "IONIC_CMD_Q_CONTROL";
 166         case IONIC_CMD_RDMA_RESET_LIF:
 167                 return "IONIC_CMD_RDMA_RESET_LIF";
 168         case IONIC_CMD_RDMA_CREATE_EQ:
 169                 return "IONIC_CMD_RDMA_CREATE_EQ";
 170         case IONIC_CMD_RDMA_CREATE_CQ:
 171                 return "IONIC_CMD_RDMA_CREATE_CQ";
 172         case IONIC_CMD_RDMA_CREATE_ADMINQ:
 173                 return "IONIC_CMD_RDMA_CREATE_ADMINQ";
 174         case IONIC_CMD_FW_DOWNLOAD:
 175                 return "IONIC_CMD_FW_DOWNLOAD";
 176         case IONIC_CMD_FW_CONTROL:
 177                 return "IONIC_CMD_FW_CONTROL";
 178         case IONIC_CMD_FW_DOWNLOAD_V1:
 179                 return "IONIC_CMD_FW_DOWNLOAD_V1";
 180         case IONIC_CMD_FW_CONTROL_V1:
 181                 return "IONIC_CMD_FW_CONTROL_V1";
 182         case IONIC_CMD_VF_GETATTR:
 183                 return "IONIC_CMD_VF_GETATTR";
 184         case IONIC_CMD_VF_SETATTR:
 185                 return "IONIC_CMD_VF_SETATTR";
 186         default:
 187                 return "DEVCMD_UNKNOWN";
 188         }
 189 }
 190
 191 const char *ionic_vf_attr_to_str(enum ionic_vf_attr attr)
 192 {
 193         switch (attr) {
 194         case IONIC_VF_ATTR_SPOOFCHK:
 195                 return "IONIC_VF_ATTR_SPOOFCHK";
 196         case IONIC_VF_ATTR_TRUST:
 197                 return "IONIC_VF_ATTR_TRUST";
 198         case IONIC_VF_ATTR_LINKSTATE:
 199                 return "IONIC_VF_ATTR_LINKSTATE";
 200         case IONIC_VF_ATTR_MAC:
 201                 return "IONIC_VF_ATTR_MAC";
 202         case IONIC_VF_ATTR_VLAN:
 203                 return "IONIC_VF_ATTR_VLAN";
 204         case IONIC_VF_ATTR_RATE:
 205                 return "IONIC_VF_ATTR_RATE";
 206         case IONIC_VF_ATTR_STATSADDR:
 207                 return "IONIC_VF_ATTR_STATSADDR";
 208         default:
 209                 return "IONIC_VF_ATTR_UNKNOWN";
 210         }
 211 }
 212
 213 static void ionic_adminq_flush(struct ionic_lif *lif)
 214 {
 215         struct ionic_desc_info *desc_info;
 216         unsigned long irqflags;
 217         struct ionic_queue *q;
 218
 219         spin_lock_irqsave(&lif->adminq_lock, irqflags);
 220         if (!lif->adminqcq) {
 221                 spin_unlock_irqrestore(&lif->adminq_lock, irqflags);
 222                 return;
 223         }
 224
 225         q = &lif->adminqcq->q;
 226
 227         while (q->tail_idx != q->head_idx) {
 228                 desc_info = &q->info[q->tail_idx];
 229                 memset(desc_info->desc, 0, sizeof(union ionic_adminq_cmd));
 230                 desc_info->cb = NULL;
 231                 desc_info->cb_arg = NULL;
 232                 q->tail_idx = (q->tail_idx + 1) & (q->num_descs - 1);
 233         }
 234         spin_unlock_irqrestore(&lif->adminq_lock, irqflags);
 235 }
 236
 237 void ionic_adminq_netdev_err_print(struct ionic_lif *lif, u8 opcode,
 238                                    u8 status, int err)
 239 {
 240         const char *stat_str;
 241
 242         stat_str = (err == -ETIMEDOUT) ? "TIMEOUT" :
 243                                          ionic_error_to_str(status);
 244
 245         netdev_err(lif->netdev, "%s (%d) failed: %s (%d)\n",
 246                    ionic_opcode_to_str(opcode), opcode, stat_str, err);
 247 }
 248
 249 static int ionic_adminq_check_err(struct ionic_lif *lif,
 250                                   struct ionic_admin_ctx *ctx,
 251                                   const bool timeout,
 252                                   const bool do_msg)
 253 {
 254         int err = 0;
 255
 256         if (ctx->comp.comp.status || timeout) {
 257                 err = timeout ? -ETIMEDOUT :
 258                                 ionic_error_to_errno(ctx->comp.comp.status);
 259
 260                 if (do_msg)
 261                         ionic_adminq_netdev_err_print(lif, ctx->cmd.cmd.opcode,
 262                                                       ctx->comp.comp.status, err);
 263
 264                 if (timeout)
 265                         ionic_adminq_flush(lif);
 266         }
 267
 268         return err;
 269 }
 270
 271 static void ionic_adminq_cb(struct ionic_queue *q,
 272                             struct ionic_desc_info *desc_info,
 273                             struct ionic_cq_info *cq_info, void *cb_arg)
 274 {
 275         struct ionic_admin_ctx *ctx = cb_arg;
 276         struct ionic_admin_comp *comp;
 277
 278         if (!ctx)
 279                 return;
 280
 281         comp = cq_info->cq_desc;
 282
 283         memcpy(&ctx->comp, comp, sizeof(*comp));
 284
 285         dev_dbg(q->dev, "comp admin queue command:\n");
 286         dynamic_hex_dump("comp ", DUMP_PREFIX_OFFSET, 16, 1,
 287                          &ctx->comp, sizeof(ctx->comp), true);
 288
 289         complete_all(&ctx->work);
 290 }
 291
 292 int ionic_adminq_post(struct ionic_lif *lif, struct ionic_admin_ctx *ctx)
 293 {
 294         struct ionic_desc_info *desc_info;
 295         unsigned long irqflags;
 296         struct ionic_queue *q;
 297         int err = 0;
 298
 299         spin_lock_irqsave(&lif->adminq_lock, irqflags);
 300         if (!lif->adminqcq) {
 301                 spin_unlock_irqrestore(&lif->adminq_lock, irqflags);
 302                 return -EIO;
 303         }
 304
 305         q = &lif->adminqcq->q;
 306
 307         if (!ionic_q_has_space(q, 1)) {
 308                 err = -ENOSPC;
 309                 goto err_out;
 310         }
 311
 312         err = ionic_heartbeat_check(lif->ionic);
 313         if (err)
 314                 goto err_out;
 315
 316         desc_info = &q->info[q->head_idx];
 317         memcpy(desc_info->desc, &ctx->cmd, sizeof(ctx->cmd));
 318
 319         dev_dbg(&lif->netdev->dev, "post admin queue command:\n");
 320         dynamic_hex_dump("cmd ", DUMP_PREFIX_OFFSET, 16, 1,
 321                          &ctx->cmd, sizeof(ctx->cmd), true);
 322
 323         ionic_q_post(q, true, ionic_adminq_cb, ctx);
 324
 325 err_out:
 326         spin_unlock_irqrestore(&lif->adminq_lock, irqflags);
 327
 328         return err;
 329 }
 330
 331 int ionic_adminq_wait(struct ionic_lif *lif, struct ionic_admin_ctx *ctx,
 332                       const int err, const bool do_msg)
 333 {
 334         struct net_device *netdev = lif->netdev;
 335         unsigned long time_limit;
 336         unsigned long time_start;
 337         unsigned long time_done;
 338         unsigned long remaining;
 339         const char *name;
 340
 341         name = ionic_opcode_to_str(ctx->cmd.cmd.opcode);
 342
 343         if (err) {
 344                 if (do_msg && !test_bit(IONIC_LIF_F_FW_RESET, lif->state))
 345                         netdev_err(netdev, "Posting of %s (%d) failed: %d\n",
 346                                    name, ctx->cmd.cmd.opcode, err);
 347                 ctx->comp.comp.status = IONIC_RC_ERROR;
 348                 return err;
 349         }
 350
 351         time_start = jiffies;
 352         time_limit = time_start + HZ * (ulong)DEVCMD_TIMEOUT;
 353         do {
 354                 remaining = wait_for_completion_timeout(&ctx->work,
 355                                                         IONIC_ADMINQ_TIME_SLICE);
 356
 357                 /* check for done */
 358                 if (remaining)
 359                         break;
 360
 361                 /* force a check of FW status and break out if FW reset */
 362                 (void)ionic_heartbeat_check(lif->ionic);
 363                 if ((test_bit(IONIC_LIF_F_FW_RESET, lif->state) &&
 364                      !lif->ionic->idev.fw_status_ready) ||
 365                     test_bit(IONIC_LIF_F_FW_STOPPING, lif->state)) {
 366                         if (do_msg)
 367                                 netdev_warn(netdev, "%s (%d) interrupted, FW in reset\n",
 368                                             name, ctx->cmd.cmd.opcode);
 369                         ctx->comp.comp.status = IONIC_RC_ERROR;
 370                         return -ENXIO;
 371                 }
 372
 373         } while (time_before(jiffies, time_limit));
 374         time_done = jiffies;
 375
 376         dev_dbg(lif->ionic->dev, "%s: elapsed %d msecs\n",
 377                 __func__, jiffies_to_msecs(time_done - time_start));
 378
 379         return ionic_adminq_check_err(lif, ctx,
 380                                       time_after_eq(time_done, time_limit),
 381                                       do_msg);
 382 }
 383
 384 int ionic_adminq_post_wait(struct ionic_lif *lif, struct ionic_admin_ctx *ctx)
 385 {
 386         int err;
 387
 388         err = ionic_adminq_post(lif, ctx);
 389
 390         return ionic_adminq_wait(lif, ctx, err, true);
 391 }
 392
 393 int ionic_adminq_post_wait_nomsg(struct ionic_lif *lif, struct ionic_admin_ctx *ctx)
 394 {
 395         int err;
 396
 397         err = ionic_adminq_post(lif, ctx);
 398
 399         return ionic_adminq_wait(lif, ctx, err, false);
 400 }
 401
 402 static void ionic_dev_cmd_clean(struct ionic *ionic)
 403 {
 404         struct ionic_dev *idev = &ionic->idev;
 405
 406         iowrite32(0, &idev->dev_cmd_regs->doorbell);
 407         memset_io(&idev->dev_cmd_regs->cmd, 0, sizeof(idev->dev_cmd_regs->cmd));
 408 }
 409
 410 void ionic_dev_cmd_dev_err_print(struct ionic *ionic, u8 opcode, u8 status,
 411                                  int err)
 412 {
 413         const char *stat_str;
 414
 415         stat_str = (err == -ETIMEDOUT) ? "TIMEOUT" :
 416                                          ionic_error_to_str(status);
 417
 418         dev_err(ionic->dev, "DEV_CMD %s (%d) error, %s (%d) failed\n",
 419                 ionic_opcode_to_str(opcode), opcode, stat_str, err);
 420 }
 421
 422 static int __ionic_dev_cmd_wait(struct ionic *ionic, unsigned long max_seconds,
 423                                 const bool do_msg)
 424 {
 425         struct ionic_dev *idev = &ionic->idev;
 426         unsigned long start_time;
 427         unsigned long max_wait;
 428         unsigned long duration;
 429         int done = 0;
 430         bool fw_up;
 431         int opcode;
 432         int err;
 433
 434         /* Wait for dev cmd to complete, retrying if we get EAGAIN,
 435          * but don't wait any longer than max_seconds.
 436          */
 437         max_wait = jiffies + (max_seconds * HZ);
 438 try_again:
 439         opcode = readb(&idev->dev_cmd_regs->cmd.cmd.opcode);
 440         start_time = jiffies;
 441         for (fw_up = ionic_is_fw_running(idev);
 442              !done && fw_up && time_before(jiffies, max_wait);
 443              fw_up = ionic_is_fw_running(idev)) {
 444                 done = ionic_dev_cmd_done(idev);
 445                 if (done)
 446                         break;
 447                 usleep_range(100, 200);
 448         }
 449         duration = jiffies - start_time;
 450
 451         dev_dbg(ionic->dev, "DEVCMD %s (%d) done=%d took %ld secs (%ld jiffies)\n",
 452                 ionic_opcode_to_str(opcode), opcode,
 453                 done, duration / HZ, duration);
 454
 455         if (!done && !fw_up) {
 456                 ionic_dev_cmd_clean(ionic);
 457                 dev_warn(ionic->dev, "DEVCMD %s (%d) interrupted - FW is down\n",
 458                          ionic_opcode_to_str(opcode), opcode);
 459                 return -ENXIO;
 460         }
 461
 462         if (!done && !time_before(jiffies, max_wait)) {
 463                 ionic_dev_cmd_clean(ionic);
 464                 dev_warn(ionic->dev, "DEVCMD %s (%d) timeout after %ld secs\n",
 465                          ionic_opcode_to_str(opcode), opcode, max_seconds);
 466                 return -ETIMEDOUT;
 467         }
 468
 469         err = ionic_dev_cmd_status(&ionic->idev);
 470         if (err) {
 471                 if (err == IONIC_RC_EAGAIN &&
 472                     time_before(jiffies, (max_wait - HZ))) {
 473                         dev_dbg(ionic->dev, "DEV_CMD %s (%d), %s (%d) retrying...\n",
 474                                 ionic_opcode_to_str(opcode), opcode,
 475                                 ionic_error_to_str(err), err);
 476
 477                         msleep(1000);
 478                         iowrite32(0, &idev->dev_cmd_regs->done);
 479                         iowrite32(1, &idev->dev_cmd_regs->doorbell);
 480                         goto try_again;
 481                 }
 482
 483                 if (!(opcode == IONIC_CMD_FW_CONTROL && err == IONIC_RC_EAGAIN))
 484                         if (do_msg)
 485                                 ionic_dev_cmd_dev_err_print(ionic, opcode, err,
 486                                                             ionic_error_to_errno(err));
 487
 488                 return ionic_error_to_errno(err);
 489         }
 490
 491         return 0;
 492 }
 493
 494 int ionic_dev_cmd_wait(struct ionic *ionic, unsigned long max_seconds)
 495 {
 496         return __ionic_dev_cmd_wait(ionic, max_seconds, true);
 497 }
 498
 499 int ionic_dev_cmd_wait_nomsg(struct ionic *ionic, unsigned long max_seconds)
 500 {
 501         return __ionic_dev_cmd_wait(ionic, max_seconds, false);
 502 }
 503
 504 int ionic_setup(struct ionic *ionic)
 505 {
 506         int err;
 507
 508         err = ionic_dev_setup(ionic);
 509         if (err)
 510                 return err;
 511         ionic_reset(ionic);
 512
 513         return 0;
 514 }
 515
 516 int ionic_identify(struct ionic *ionic)
 517 {
 518         struct ionic_identity *ident = &ionic->ident;
 519         struct ionic_dev *idev = &ionic->idev;
 520         size_t sz;
 521         int err;
 522
 523         memset(ident, 0, sizeof(*ident));
 524
 525         ident->drv.os_type = cpu_to_le32(IONIC_OS_TYPE_LINUX);
 526         strncpy(ident->drv.driver_ver_str, UTS_RELEASE,
 527                 sizeof(ident->drv.driver_ver_str) - 1);
 528
 529         mutex_lock(&ionic->dev_cmd_lock);
 530
 531         sz = min(sizeof(ident->drv), sizeof(idev->dev_cmd_regs->data));
 532         memcpy_toio(&idev->dev_cmd_regs->data, &ident->drv, sz);
 533
 534         ionic_dev_cmd_identify(idev, IONIC_IDENTITY_VERSION_1);
 535         err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
 536         if (!err) {
 537                 sz = min(sizeof(ident->dev), sizeof(idev->dev_cmd_regs->data));
 538                 memcpy_fromio(&ident->dev, &idev->dev_cmd_regs->data, sz);
 539         }
 540         mutex_unlock(&ionic->dev_cmd_lock);
 541
 542         if (err) {
 543                 dev_err(ionic->dev, "Cannot identify ionic: %d\n", err);
 544                 goto err_out;
 545         }
 546
 547         if (isprint(idev->dev_info.fw_version[0]) &&
 548             isascii(idev->dev_info.fw_version[0]))
 549                 dev_info(ionic->dev, "FW: %.*s\n",
 550                          (int)(sizeof(idev->dev_info.fw_version) - 1),
 551                          idev->dev_info.fw_version);
 552         else
 553                 dev_info(ionic->dev, "FW: (invalid string) 0x%02x 0x%02x 0x%02x 0x%02x ...\n",
 554                          (u8)idev->dev_info.fw_version[0],
 555                          (u8)idev->dev_info.fw_version[1],
 556                          (u8)idev->dev_info.fw_version[2],
 557                          (u8)idev->dev_info.fw_version[3]);
 558
 559         err = ionic_lif_identify(ionic, IONIC_LIF_TYPE_CLASSIC,
 560                                  &ionic->ident.lif);
 561         if (err) {
 562                 dev_err(ionic->dev, "Cannot identify LIFs: %d\n", err);
 563                 goto err_out;
 564         }
 565
 566         return 0;
 567
 568 err_out:
 569         return err;
 570 }
 571
 572 int ionic_init(struct ionic *ionic)
 573 {
 574         struct ionic_dev *idev = &ionic->idev;
 575         int err;
 576
 577         mutex_lock(&ionic->dev_cmd_lock);
 578         ionic_dev_cmd_init(idev);
 579         err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
 580         mutex_unlock(&ionic->dev_cmd_lock);
 581
 582         return err;
 583 }
 584
 585 int ionic_reset(struct ionic *ionic)
 586 {
 587         struct ionic_dev *idev = &ionic->idev;
 588         int err;
 589
 590         if (!ionic_is_fw_running(idev))
 591                 return 0;
 592
 593         mutex_lock(&ionic->dev_cmd_lock);
 594         ionic_dev_cmd_reset(idev);
 595         err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
 596         mutex_unlock(&ionic->dev_cmd_lock);
 597
 598         return err;
 599 }
 600
 601 int ionic_port_identify(struct ionic *ionic)
 602 {
 603         struct ionic_identity *ident = &ionic->ident;
 604         struct ionic_dev *idev = &ionic->idev;
 605         size_t sz;
 606         int err;
 607
 608         mutex_lock(&ionic->dev_cmd_lock);
 609
 610         ionic_dev_cmd_port_identify(idev);
 611         err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
 612         if (!err) {
 613                 sz = min(sizeof(ident->port), sizeof(idev->dev_cmd_regs->data));
 614                 memcpy_fromio(&ident->port, &idev->dev_cmd_regs->data, sz);
 615         }
 616
 617         mutex_unlock(&ionic->dev_cmd_lock);
 618
 619         return err;
 620 }
 621
 622 int ionic_port_init(struct ionic *ionic)
 623 {
 624         struct ionic_identity *ident = &ionic->ident;
 625         struct ionic_dev *idev = &ionic->idev;
 626         size_t sz;
 627         int err;
 628
 629         if (!idev->port_info) {
 630                 idev->port_info_sz = ALIGN(sizeof(*idev->port_info), PAGE_SIZE);
 631                 idev->port_info = dma_alloc_coherent(ionic->dev,
 632                                                      idev->port_info_sz,
 633                                                      &idev->port_info_pa,
 634                                                      GFP_KERNEL);
 635                 if (!idev->port_info)
 636                         return -ENOMEM;
 637         }
 638
 639         sz = min(sizeof(ident->port.config), sizeof(idev->dev_cmd_regs->data));
 640
 641         mutex_lock(&ionic->dev_cmd_lock);
 642
 643         memcpy_toio(&idev->dev_cmd_regs->data, &ident->port.config, sz);
 644         ionic_dev_cmd_port_init(idev);
 645         err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
 646
 647         ionic_dev_cmd_port_state(&ionic->idev, IONIC_PORT_ADMIN_STATE_UP);
 648         (void)ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
 649
 650         mutex_unlock(&ionic->dev_cmd_lock);
 651         if (err) {
 652                 dev_err(ionic->dev, "Failed to init port\n");
 653                 dma_free_coherent(ionic->dev, idev->port_info_sz,
 654                                   idev->port_info, idev->port_info_pa);
 655                 idev->port_info = NULL;
 656                 idev->port_info_pa = 0;
 657         }
 658
 659         return err;
 660 }
 661
 662 int ionic_port_reset(struct ionic *ionic)
 663 {
 664         struct ionic_dev *idev = &ionic->idev;
 665         int err = 0;
 666
 667         if (!idev->port_info)
 668                 return 0;
 669
 670         if (ionic_is_fw_running(idev)) {
 671                 mutex_lock(&ionic->dev_cmd_lock);
 672                 ionic_dev_cmd_port_reset(idev);
 673                 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
 674                 mutex_unlock(&ionic->dev_cmd_lock);
 675         }
 676
 677         dma_free_coherent(ionic->dev, idev->port_info_sz,
 678                           idev->port_info, idev->port_info_pa);
 679
 680         idev->port_info = NULL;
 681         idev->port_info_pa = 0;
 682
 683         return err;
 684 }
 685
 686 static int __init ionic_init_module(void)
 687 {
 688         ionic_debugfs_create();
 689         return ionic_bus_register_driver();
 690 }
 691
 692 static void __exit ionic_cleanup_module(void)
 693 {
 694         ionic_bus_unregister_driver();
 695         ionic_debugfs_destroy();
 696
 697         pr_info("%s removed\n", IONIC_DRV_NAME);
 698 }
 699
 700 module_init(ionic_init_module);
 701 module_exit(ionic_cleanup_module);