drivers/net/ionic/ionic_main.c

   1 /* SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0)
   2  * Copyright(c) 2018-2019 Pensando Systems, Inc. All rights reserved.
   3  */
   4
   5 #include <stdbool.h>
   6
   7 #include <rte_memzone.h>
   8
   9 #include "ionic.h"
  10 #include "ionic_ethdev.h"
  11 #include "ionic_lif.h"
  12
  13 static const char *
  14 ionic_error_to_str(enum ionic_status_code code)
  15 {
  16         switch (code) {
  17         case IONIC_RC_SUCCESS:
  18                 return "IONIC_RC_SUCCESS";
  19         case IONIC_RC_EVERSION:
  20                 return "IONIC_RC_EVERSION";
  21         case IONIC_RC_EOPCODE:
  22                 return "IONIC_RC_EOPCODE";
  23         case IONIC_RC_EIO:
  24                 return "IONIC_RC_EIO";
  25         case IONIC_RC_EPERM:
  26                 return "IONIC_RC_EPERM";
  27         case IONIC_RC_EQID:
  28                 return "IONIC_RC_EQID";
  29         case IONIC_RC_EQTYPE:
  30                 return "IONIC_RC_EQTYPE";
  31         case IONIC_RC_ENOENT:
  32                 return "IONIC_RC_ENOENT";
  33         case IONIC_RC_EINTR:
  34                 return "IONIC_RC_EINTR";
  35         case IONIC_RC_EAGAIN:
  36                 return "IONIC_RC_EAGAIN";
  37         case IONIC_RC_ENOMEM:
  38                 return "IONIC_RC_ENOMEM";
  39         case IONIC_RC_EFAULT:
  40                 return "IONIC_RC_EFAULT";
  41         case IONIC_RC_EBUSY:
  42                 return "IONIC_RC_EBUSY";
  43         case IONIC_RC_EEXIST:
  44                 return "IONIC_RC_EEXIST";
  45         case IONIC_RC_EINVAL:
  46                 return "IONIC_RC_EINVAL";
  47         case IONIC_RC_ENOSPC:
  48                 return "IONIC_RC_ENOSPC";
  49         case IONIC_RC_ERANGE:
  50                 return "IONIC_RC_ERANGE";
  51         case IONIC_RC_BAD_ADDR:
  52                 return "IONIC_RC_BAD_ADDR";
  53         case IONIC_RC_DEV_CMD:
  54                 return "IONIC_RC_DEV_CMD";
  55         case IONIC_RC_ERROR:
  56                 return "IONIC_RC_ERROR";
  57         case IONIC_RC_ERDMA:
  58                 return "IONIC_RC_ERDMA";
  59         default:
  60                 return "IONIC_RC_UNKNOWN";
  61         }
  62 }
  63
  64 const char *
  65 ionic_opcode_to_str(enum ionic_cmd_opcode opcode)
  66 {
  67         switch (opcode) {
  68         case IONIC_CMD_NOP:
  69                 return "IONIC_CMD_NOP";
  70         case IONIC_CMD_INIT:
  71                 return "IONIC_CMD_INIT";
  72         case IONIC_CMD_RESET:
  73                 return "IONIC_CMD_RESET";
  74         case IONIC_CMD_IDENTIFY:
  75                 return "IONIC_CMD_IDENTIFY";
  76         case IONIC_CMD_GETATTR:
  77                 return "IONIC_CMD_GETATTR";
  78         case IONIC_CMD_SETATTR:
  79                 return "IONIC_CMD_SETATTR";
  80         case IONIC_CMD_PORT_IDENTIFY:
  81                 return "IONIC_CMD_PORT_IDENTIFY";
  82         case IONIC_CMD_PORT_INIT:
  83                 return "IONIC_CMD_PORT_INIT";
  84         case IONIC_CMD_PORT_RESET:
  85                 return "IONIC_CMD_PORT_RESET";
  86         case IONIC_CMD_PORT_GETATTR:
  87                 return "IONIC_CMD_PORT_GETATTR";
  88         case IONIC_CMD_PORT_SETATTR:
  89                 return "IONIC_CMD_PORT_SETATTR";
  90         case IONIC_CMD_LIF_INIT:
  91                 return "IONIC_CMD_LIF_INIT";
  92         case IONIC_CMD_LIF_RESET:
  93                 return "IONIC_CMD_LIF_RESET";
  94         case IONIC_CMD_LIF_IDENTIFY:
  95                 return "IONIC_CMD_LIF_IDENTIFY";
  96         case IONIC_CMD_LIF_SETATTR:
  97                 return "IONIC_CMD_LIF_SETATTR";
  98         case IONIC_CMD_LIF_GETATTR:
  99                 return "IONIC_CMD_LIF_GETATTR";
 100         case IONIC_CMD_RX_MODE_SET:
 101                 return "IONIC_CMD_RX_MODE_SET";
 102         case IONIC_CMD_RX_FILTER_ADD:
 103                 return "IONIC_CMD_RX_FILTER_ADD";
 104         case IONIC_CMD_RX_FILTER_DEL:
 105                 return "IONIC_CMD_RX_FILTER_DEL";
 106         case IONIC_CMD_Q_INIT:
 107                 return "IONIC_CMD_Q_INIT";
 108         case IONIC_CMD_Q_CONTROL:
 109                 return "IONIC_CMD_Q_CONTROL";
 110         case IONIC_CMD_Q_IDENTIFY:
 111                 return "IONIC_CMD_Q_IDENTIFY";
 112         case IONIC_CMD_RDMA_RESET_LIF:
 113                 return "IONIC_CMD_RDMA_RESET_LIF";
 114         case IONIC_CMD_RDMA_CREATE_EQ:
 115                 return "IONIC_CMD_RDMA_CREATE_EQ";
 116         case IONIC_CMD_RDMA_CREATE_CQ:
 117                 return "IONIC_CMD_RDMA_CREATE_CQ";
 118         case IONIC_CMD_RDMA_CREATE_ADMINQ:
 119                 return "IONIC_CMD_RDMA_CREATE_ADMINQ";
 120         default:
 121                 return "DEVCMD_UNKNOWN";
 122         }
 123 }
 124
 125 static int
 126 ionic_adminq_check_err(struct ionic_admin_ctx *ctx, bool timeout)
 127 {
 128         const char *name;
 129         const char *status;
 130
 131         name = ionic_opcode_to_str(ctx->cmd.cmd.opcode);
 132
 133         if (ctx->comp.comp.status || timeout) {
 134                 status = ionic_error_to_str(ctx->comp.comp.status);
 135                 IONIC_PRINT(ERR, "%s (%d) failed: %s (%d)",
 136                         name,
 137                         ctx->cmd.cmd.opcode,
 138                         timeout ? "TIMEOUT" : status,
 139                         timeout ? -1 : ctx->comp.comp.status);
 140                 return -EIO;
 141         }
 142
 143         IONIC_PRINT(DEBUG, "%s (%d) succeeded", name, ctx->cmd.cmd.opcode);
 144
 145         return 0;
 146 }
 147
 148 static bool
 149 ionic_adminq_service(struct ionic_cq *cq, uint16_t cq_desc_index,
 150                 void *cb_arg __rte_unused)
 151 {
 152         struct ionic_admin_comp *cq_desc_base = cq->base;
 153         struct ionic_admin_comp *cq_desc = &cq_desc_base[cq_desc_index];
 154         struct ionic_qcq *qcq = IONIC_CQ_TO_QCQ(cq);
 155         struct ionic_queue *q = &qcq->q;
 156         struct ionic_admin_ctx *ctx;
 157         uint16_t curr_q_tail_idx;
 158         uint16_t stop_index;
 159         void **info;
 160
 161         if (!color_match(cq_desc->color, cq->done_color))
 162                 return false;
 163
 164         stop_index = rte_le_to_cpu_16(cq_desc->comp_index);
 165
 166         do {
 167                 info = IONIC_INFO_PTR(q, q->tail_idx);
 168
 169                 ctx = info[0];
 170                 if (ctx) {
 171                         memcpy(&ctx->comp, cq_desc, sizeof(*cq_desc));
 172
 173                         ctx->pending_work = false; /* done */
 174                 }
 175
 176                 curr_q_tail_idx = q->tail_idx;
 177                 q->tail_idx = Q_NEXT_TO_SRVC(q, 1);
 178         } while (curr_q_tail_idx != stop_index);
 179
 180         return true;
 181 }
 182
 183 /** ionic_adminq_post - Post an admin command.
 184  * @lif:                Handle to lif.
 185  * @cmd_ctx:            Api admin command context.
 186  *
 187  * Post the command to an admin queue in the ethernet driver.  If this command
 188  * succeeds, then the command has been posted, but that does not indicate a
 189  * completion.  If this command returns success, then the completion callback
 190  * will eventually be called.
 191  *
 192  * Return: zero or negative error status.
 193  */
 194 static int
 195 ionic_adminq_post(struct ionic_lif *lif, struct ionic_admin_ctx *ctx)
 196 {
 197         struct ionic_queue *q = &lif->adminqcq->qcq.q;
 198         struct ionic_admin_cmd *q_desc_base = q->base;
 199         struct ionic_admin_cmd *q_desc;
 200         void **info;
 201         int err = 0;
 202
 203         rte_spinlock_lock(&lif->adminq_lock);
 204
 205         if (ionic_q_space_avail(q) < 1) {
 206                 err = -ENOSPC;
 207                 goto err_out;
 208         }
 209
 210         q_desc = &q_desc_base[q->head_idx];
 211
 212         memcpy(q_desc, &ctx->cmd, sizeof(ctx->cmd));
 213
 214         info = IONIC_INFO_PTR(q, q->head_idx);
 215         info[0] = ctx;
 216
 217         q->head_idx = Q_NEXT_TO_POST(q, 1);
 218
 219         /* Ring doorbell */
 220         rte_wmb();
 221         ionic_q_flush(q);
 222
 223 err_out:
 224         rte_spinlock_unlock(&lif->adminq_lock);
 225
 226         return err;
 227 }
 228
 229 static int
 230 ionic_adminq_wait_for_completion(struct ionic_lif *lif,
 231                 struct ionic_admin_ctx *ctx, unsigned long max_wait)
 232 {
 233         unsigned long step_usec = IONIC_DEVCMD_CHECK_PERIOD_US;
 234         unsigned long max_wait_usec = max_wait * 1000000L;
 235         unsigned long elapsed_usec = 0;
 236         int budget = 8;
 237
 238         while (ctx->pending_work && elapsed_usec < max_wait_usec) {
 239                 /*
 240                  * Locking here as adminq is served inline and could be
 241                  * called from multiple places
 242                  */
 243                 rte_spinlock_lock(&lif->adminq_service_lock);
 244
 245                 ionic_qcq_service(&lif->adminqcq->qcq, budget,
 246                                 ionic_adminq_service, NULL);
 247
 248                 rte_spinlock_unlock(&lif->adminq_service_lock);
 249
 250                 rte_delay_us_block(step_usec);
 251                 elapsed_usec += step_usec;
 252         }
 253
 254         return (!ctx->pending_work);
 255 }
 256
 257 int
 258 ionic_adminq_post_wait(struct ionic_lif *lif, struct ionic_admin_ctx *ctx)
 259 {
 260         bool done;
 261         int err;
 262
 263         IONIC_PRINT(DEBUG, "Sending %s (%d) via the admin queue",
 264                 ionic_opcode_to_str(ctx->cmd.cmd.opcode), ctx->cmd.cmd.opcode);
 265
 266         err = ionic_adminq_post(lif, ctx);
 267         if (err) {
 268                 IONIC_PRINT(ERR, "Failure posting %d to the admin queue (%d)",
 269                         ctx->cmd.cmd.opcode, err);
 270                 return err;
 271         }
 272
 273         done = ionic_adminq_wait_for_completion(lif, ctx,
 274                 IONIC_DEVCMD_TIMEOUT);
 275
 276         return ionic_adminq_check_err(ctx, !done /* timed out */);
 277 }
 278
 279 static int
 280 ionic_dev_cmd_wait(struct ionic_dev *idev, unsigned long max_wait)
 281 {
 282         unsigned long step_usec = IONIC_DEVCMD_CHECK_PERIOD_US;
 283         unsigned long max_wait_usec = max_wait * 1000000L;
 284         unsigned long elapsed_usec = 0;
 285         int done;
 286
 287         /* Wait for dev cmd to complete.. but no more than max_wait sec */
 288
 289         do {
 290                 done = ionic_dev_cmd_done(idev);
 291                 if (done) {
 292                         IONIC_PRINT(DEBUG, "DEVCMD %d done took %ld usecs",
 293                                 ioread8(&idev->dev_cmd->cmd.cmd.opcode),
 294                                 elapsed_usec);
 295                         return 0;
 296                 }
 297
 298                 rte_delay_us_block(step_usec);
 299
 300                 elapsed_usec += step_usec;
 301         } while (elapsed_usec < max_wait_usec);
 302
 303         IONIC_PRINT(ERR, "DEVCMD %d timeout after %ld usecs",
 304                 ioread8(&idev->dev_cmd->cmd.cmd.opcode),
 305                 elapsed_usec);
 306
 307         return -ETIMEDOUT;
 308 }
 309
 310 static int
 311 ionic_dev_cmd_check_error(struct ionic_dev *idev)
 312 {
 313         uint8_t status;
 314
 315         status = ionic_dev_cmd_status(idev);
 316         if (status == 0)
 317                 return 0;
 318
 319         return -EIO;
 320 }
 321
 322 int
 323 ionic_dev_cmd_wait_check(struct ionic_dev *idev, unsigned long max_wait)
 324 {
 325         int err;
 326
 327         err = ionic_dev_cmd_wait(idev, max_wait);
 328
 329         if (!err)
 330                 err = ionic_dev_cmd_check_error(idev);
 331
 332         IONIC_PRINT(DEBUG, "dev_cmd returned %d", err);
 333         return err;
 334 }
 335
 336 int
 337 ionic_setup(struct ionic_adapter *adapter)
 338 {
 339         return ionic_dev_setup(adapter);
 340 }
 341
 342 int
 343 ionic_identify(struct ionic_adapter *adapter)
 344 {
 345         struct ionic_dev *idev = &adapter->idev;
 346         struct ionic_identity *ident = &adapter->ident;
 347         uint32_t drv_size = RTE_DIM(ident->drv.words);
 348         uint32_t cmd_size = RTE_DIM(idev->dev_cmd->data);
 349         uint32_t dev_size = RTE_DIM(ident->dev.words);
 350         uint32_t i, nwords;
 351         int err;
 352
 353         memset(ident, 0, sizeof(*ident));
 354
 355         ident->drv.os_type = IONIC_OS_TYPE_LINUX;
 356         ident->drv.os_dist = 0;
 357         snprintf(ident->drv.os_dist_str,
 358                 sizeof(ident->drv.os_dist_str), "Unknown");
 359         ident->drv.kernel_ver = 0;
 360         snprintf(ident->drv.kernel_ver_str,
 361                 sizeof(ident->drv.kernel_ver_str), "DPDK");
 362         strncpy(ident->drv.driver_ver_str, IONIC_DRV_VERSION,
 363                 sizeof(ident->drv.driver_ver_str) - 1);
 364
 365         nwords = RTE_MIN(drv_size, cmd_size);
 366         for (i = 0; i < nwords; i++)
 367                 iowrite32(ident->drv.words[i], &idev->dev_cmd->data[i]);
 368
 369         ionic_dev_cmd_identify(idev, IONIC_IDENTITY_VERSION_1);
 370         err = ionic_dev_cmd_wait_check(idev, IONIC_DEVCMD_TIMEOUT);
 371         if (!err) {
 372                 nwords = RTE_MIN(dev_size, cmd_size);
 373                 for (i = 0; i < nwords; i++)
 374                         ident->dev.words[i] = ioread32(&idev->dev_cmd->data[i]);
 375         }
 376
 377         return err;
 378 }
 379
 380 int
 381 ionic_init(struct ionic_adapter *adapter)
 382 {
 383         struct ionic_dev *idev = &adapter->idev;
 384
 385         ionic_dev_cmd_init(idev);
 386         return ionic_dev_cmd_wait_check(idev, IONIC_DEVCMD_TIMEOUT);
 387 }
 388
 389 int
 390 ionic_reset(struct ionic_adapter *adapter)
 391 {
 392         struct ionic_dev *idev = &adapter->idev;
 393
 394         ionic_dev_cmd_reset(idev);
 395         return ionic_dev_cmd_wait_check(idev, IONIC_DEVCMD_TIMEOUT);
 396 }
 397
 398 int
 399 ionic_port_identify(struct ionic_adapter *adapter)
 400 {
 401         struct ionic_dev *idev = &adapter->idev;
 402         struct ionic_identity *ident = &adapter->ident;
 403         uint32_t port_words = RTE_DIM(ident->port.words);
 404         uint32_t cmd_words = RTE_DIM(idev->dev_cmd->data);
 405         uint32_t i, nwords;
 406         int err;
 407
 408         ionic_dev_cmd_port_identify(idev);
 409         err = ionic_dev_cmd_wait_check(idev, IONIC_DEVCMD_TIMEOUT);
 410         if (!err) {
 411                 nwords = RTE_MIN(port_words, cmd_words);
 412                 for (i = 0; i < nwords; i++)
 413                         ident->port.words[i] =
 414                                 ioread32(&idev->dev_cmd->data[i]);
 415         }
 416
 417         IONIC_PRINT(INFO, "speed %d",
 418                 rte_le_to_cpu_32(ident->port.config.speed));
 419         IONIC_PRINT(INFO, "mtu %d",
 420                 rte_le_to_cpu_32(ident->port.config.mtu));
 421         IONIC_PRINT(INFO, "state %d", ident->port.config.state);
 422         IONIC_PRINT(INFO, "an_enable %d", ident->port.config.an_enable);
 423         IONIC_PRINT(INFO, "fec_type %d", ident->port.config.fec_type);
 424         IONIC_PRINT(INFO, "pause_type %d", ident->port.config.pause_type);
 425         IONIC_PRINT(INFO, "loopback_mode %d",
 426                 ident->port.config.loopback_mode);
 427
 428         return err;
 429 }
 430
 431 static const struct rte_memzone *
 432 ionic_memzone_reserve(const char *name, uint32_t len, int socket_id)
 433 {
 434         const struct rte_memzone *mz;
 435
 436         mz = rte_memzone_lookup(name);
 437         if (mz)
 438                 return mz;
 439
 440         mz = rte_memzone_reserve_aligned(name, len, socket_id,
 441                 RTE_MEMZONE_IOVA_CONTIG, IONIC_ALIGN);
 442         return mz;
 443 }
 444
 445 int
 446 ionic_port_init(struct ionic_adapter *adapter)
 447 {
 448         struct ionic_dev *idev = &adapter->idev;
 449         struct ionic_identity *ident = &adapter->ident;
 450         char z_name[RTE_MEMZONE_NAMESIZE];
 451         uint32_t config_words = RTE_DIM(ident->port.config.words);
 452         uint32_t cmd_words = RTE_DIM(idev->dev_cmd->data);
 453         uint32_t i, nwords;
 454         int err;
 455
 456         if (idev->port_info)
 457                 return 0;
 458
 459         idev->port_info_sz = RTE_ALIGN(sizeof(*idev->port_info),
 460                         rte_mem_page_size());
 461
 462         snprintf(z_name, sizeof(z_name), "%s_port_%s_info",
 463                 IONIC_DRV_NAME, adapter->name);
 464
 465         idev->port_info_z = ionic_memzone_reserve(z_name, idev->port_info_sz,
 466                 SOCKET_ID_ANY);
 467         if (!idev->port_info_z) {
 468                 IONIC_PRINT(ERR, "Cannot reserve port info DMA memory");
 469                 return -ENOMEM;
 470         }
 471
 472         idev->port_info = idev->port_info_z->addr;
 473         idev->port_info_pa = idev->port_info_z->iova;
 474
 475         nwords = RTE_MIN(config_words, cmd_words);
 476
 477         for (i = 0; i < nwords; i++)
 478                 iowrite32(ident->port.config.words[i], &idev->dev_cmd->data[i]);
 479
 480         idev->port_info->config.state = IONIC_PORT_ADMIN_STATE_UP;
 481         ionic_dev_cmd_port_init(idev);
 482         err = ionic_dev_cmd_wait_check(idev, IONIC_DEVCMD_TIMEOUT);
 483         if (err)
 484                 IONIC_PRINT(ERR, "Failed to init port");
 485
 486         return err;
 487 }
 488
 489 int
 490 ionic_port_reset(struct ionic_adapter *adapter)
 491 {
 492         struct ionic_dev *idev = &adapter->idev;
 493         int err;
 494
 495         if (!idev->port_info)
 496                 return 0;
 497
 498         ionic_dev_cmd_port_reset(idev);
 499         err = ionic_dev_cmd_wait_check(idev, IONIC_DEVCMD_TIMEOUT);
 500         if (err) {
 501                 IONIC_PRINT(ERR, "Failed to reset port");
 502                 return err;
 503         }
 504
 505         idev->port_info = NULL;
 506         idev->port_info_pa = 0;
 507
 508         return 0;
 509 }