drivers/net/hns3/hns3_cmd.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2018-2021 HiSilicon Limited.
   3  */
   4
   5 #include <ethdev_pci.h>
   6 #include <rte_io.h>
   7
   8 #include "hns3_ethdev.h"
   9 #include "hns3_regs.h"
  10 #include "hns3_intr.h"
  11 #include "hns3_logs.h"
  12
  13 static int
  14 hns3_ring_space(struct hns3_cmq_ring *ring)
  15 {
  16         int ntu = ring->next_to_use;
  17         int ntc = ring->next_to_clean;
  18         int used = (ntu - ntc + ring->desc_num) % ring->desc_num;
  19
  20         return ring->desc_num - used - 1;
  21 }
  22
  23 static bool
  24 is_valid_csq_clean_head(struct hns3_cmq_ring *ring, int head)
  25 {
  26         int ntu = ring->next_to_use;
  27         int ntc = ring->next_to_clean;
  28
  29         if (ntu > ntc)
  30                 return head >= ntc && head <= ntu;
  31
  32         return head >= ntc || head <= ntu;
  33 }
  34
  35 /*
  36  * hns3_allocate_dma_mem - Specific memory alloc for command function.
  37  * Malloc a memzone, which is a contiguous portion of physical memory identified
  38  * by a name.
  39  * @ring: pointer to the ring structure
  40  * @size: size of memory requested
  41  * @alignment: what to align the allocation to
  42  */
  43 static int
  44 hns3_allocate_dma_mem(struct hns3_hw *hw, struct hns3_cmq_ring *ring,
  45                       uint64_t size, uint32_t alignment)
  46 {
  47         static uint64_t hns3_dma_memzone_id;
  48         const struct rte_memzone *mz = NULL;
  49         char z_name[RTE_MEMZONE_NAMESIZE];
  50
  51         snprintf(z_name, sizeof(z_name), "hns3_dma_%" PRIu64,
  52                 __atomic_fetch_add(&hns3_dma_memzone_id, 1, __ATOMIC_RELAXED));
  53         mz = rte_memzone_reserve_bounded(z_name, size, SOCKET_ID_ANY,
  54                                          RTE_MEMZONE_IOVA_CONTIG, alignment,
  55                                          RTE_PGSIZE_2M);
  56         if (mz == NULL)
  57                 return -ENOMEM;
  58
  59         ring->buf_size = size;
  60         ring->desc = mz->addr;
  61         ring->desc_dma_addr = mz->iova;
  62         ring->zone = (const void *)mz;
  63         hns3_dbg(hw, "memzone %s allocated with physical address: %" PRIu64,
  64                  mz->name, ring->desc_dma_addr);
  65
  66         return 0;
  67 }
  68
  69 static void
  70 hns3_free_dma_mem(struct hns3_hw *hw, struct hns3_cmq_ring *ring)
  71 {
  72         hns3_dbg(hw, "memzone %s to be freed with physical address: %" PRIu64,
  73                  ((const struct rte_memzone *)ring->zone)->name,
  74                  ring->desc_dma_addr);
  75         rte_memzone_free((const struct rte_memzone *)ring->zone);
  76         ring->buf_size = 0;
  77         ring->desc = NULL;
  78         ring->desc_dma_addr = 0;
  79         ring->zone = NULL;
  80 }
  81
  82 static int
  83 hns3_alloc_cmd_desc(struct hns3_hw *hw, struct hns3_cmq_ring *ring)
  84 {
  85         int size  = ring->desc_num * sizeof(struct hns3_cmd_desc);
  86
  87         if (hns3_allocate_dma_mem(hw, ring, size, HNS3_CMD_DESC_ALIGNMENT)) {
  88                 hns3_err(hw, "allocate dma mem failed");
  89                 return -ENOMEM;
  90         }
  91
  92         return 0;
  93 }
  94
  95 static void
  96 hns3_free_cmd_desc(struct hns3_hw *hw, struct hns3_cmq_ring *ring)
  97 {
  98         if (ring->desc)
  99                 hns3_free_dma_mem(hw, ring);
 100 }
 101
 102 static int
 103 hns3_alloc_cmd_queue(struct hns3_hw *hw, int ring_type)
 104 {
 105         struct hns3_cmq_ring *ring =
 106                 (ring_type == HNS3_TYPE_CSQ) ? &hw->cmq.csq : &hw->cmq.crq;
 107         int ret;
 108
 109         ring->ring_type = ring_type;
 110         ring->hw = hw;
 111
 112         ret = hns3_alloc_cmd_desc(hw, ring);
 113         if (ret)
 114                 hns3_err(hw, "descriptor %s alloc error %d",
 115                             (ring_type == HNS3_TYPE_CSQ) ? "CSQ" : "CRQ", ret);
 116
 117         return ret;
 118 }
 119
 120 void
 121 hns3_cmd_reuse_desc(struct hns3_cmd_desc *desc, bool is_read)
 122 {
 123         desc->flag = rte_cpu_to_le_16(HNS3_CMD_FLAG_NO_INTR | HNS3_CMD_FLAG_IN);
 124         if (is_read)
 125                 desc->flag |= rte_cpu_to_le_16(HNS3_CMD_FLAG_WR);
 126         else
 127                 desc->flag &= rte_cpu_to_le_16(~HNS3_CMD_FLAG_WR);
 128 }
 129
 130 void
 131 hns3_cmd_setup_basic_desc(struct hns3_cmd_desc *desc,
 132                           enum hns3_opcode_type opcode, bool is_read)
 133 {
 134         memset((void *)desc, 0, sizeof(struct hns3_cmd_desc));
 135         desc->opcode = rte_cpu_to_le_16(opcode);
 136         desc->flag = rte_cpu_to_le_16(HNS3_CMD_FLAG_NO_INTR | HNS3_CMD_FLAG_IN);
 137
 138         if (is_read)
 139                 desc->flag |= rte_cpu_to_le_16(HNS3_CMD_FLAG_WR);
 140 }
 141
 142 static void
 143 hns3_cmd_clear_regs(struct hns3_hw *hw)
 144 {
 145         hns3_write_dev(hw, HNS3_CMDQ_TX_ADDR_L_REG, 0);
 146         hns3_write_dev(hw, HNS3_CMDQ_TX_ADDR_H_REG, 0);
 147         hns3_write_dev(hw, HNS3_CMDQ_TX_DEPTH_REG, 0);
 148         hns3_write_dev(hw, HNS3_CMDQ_TX_HEAD_REG, 0);
 149         hns3_write_dev(hw, HNS3_CMDQ_TX_TAIL_REG, 0);
 150         hns3_write_dev(hw, HNS3_CMDQ_RX_ADDR_L_REG, 0);
 151         hns3_write_dev(hw, HNS3_CMDQ_RX_ADDR_H_REG, 0);
 152         hns3_write_dev(hw, HNS3_CMDQ_RX_DEPTH_REG, 0);
 153         hns3_write_dev(hw, HNS3_CMDQ_RX_HEAD_REG, 0);
 154         hns3_write_dev(hw, HNS3_CMDQ_RX_TAIL_REG, 0);
 155 }
 156
 157 static void
 158 hns3_cmd_config_regs(struct hns3_cmq_ring *ring)
 159 {
 160         uint64_t dma = ring->desc_dma_addr;
 161
 162         if (ring->ring_type == HNS3_TYPE_CSQ) {
 163                 hns3_write_dev(ring->hw, HNS3_CMDQ_TX_ADDR_L_REG,
 164                                lower_32_bits(dma));
 165                 hns3_write_dev(ring->hw, HNS3_CMDQ_TX_ADDR_H_REG,
 166                                upper_32_bits(dma));
 167                 hns3_write_dev(ring->hw, HNS3_CMDQ_TX_DEPTH_REG,
 168                                ring->desc_num >> HNS3_NIC_CMQ_DESC_NUM_S |
 169                                HNS3_NIC_SW_RST_RDY);
 170                 hns3_write_dev(ring->hw, HNS3_CMDQ_TX_HEAD_REG, 0);
 171                 hns3_write_dev(ring->hw, HNS3_CMDQ_TX_TAIL_REG, 0);
 172         } else {
 173                 hns3_write_dev(ring->hw, HNS3_CMDQ_RX_ADDR_L_REG,
 174                                lower_32_bits(dma));
 175                 hns3_write_dev(ring->hw, HNS3_CMDQ_RX_ADDR_H_REG,
 176                                upper_32_bits(dma));
 177                 hns3_write_dev(ring->hw, HNS3_CMDQ_RX_DEPTH_REG,
 178                                ring->desc_num >> HNS3_NIC_CMQ_DESC_NUM_S);
 179                 hns3_write_dev(ring->hw, HNS3_CMDQ_RX_HEAD_REG, 0);
 180                 hns3_write_dev(ring->hw, HNS3_CMDQ_RX_TAIL_REG, 0);
 181         }
 182 }
 183
 184 static void
 185 hns3_cmd_init_regs(struct hns3_hw *hw)
 186 {
 187         hns3_cmd_config_regs(&hw->cmq.csq);
 188         hns3_cmd_config_regs(&hw->cmq.crq);
 189 }
 190
 191 static int
 192 hns3_cmd_csq_clean(struct hns3_hw *hw)
 193 {
 194         struct hns3_cmq_ring *csq = &hw->cmq.csq;
 195         uint32_t head;
 196         uint32_t addr;
 197         int clean;
 198
 199         head = hns3_read_dev(hw, HNS3_CMDQ_TX_HEAD_REG);
 200         addr = hns3_read_dev(hw, HNS3_CMDQ_TX_ADDR_L_REG);
 201         if (!is_valid_csq_clean_head(csq, head) || addr == 0) {
 202                 hns3_err(hw, "wrong cmd addr(%0x) head (%u, %u-%u)", addr, head,
 203                          csq->next_to_use, csq->next_to_clean);
 204                 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
 205                         __atomic_store_n(&hw->reset.disable_cmd, 1,
 206                                          __ATOMIC_RELAXED);
 207                         hns3_schedule_delayed_reset(HNS3_DEV_HW_TO_ADAPTER(hw));
 208                 }
 209
 210                 return -EIO;
 211         }
 212
 213         clean = (head - csq->next_to_clean + csq->desc_num) % csq->desc_num;
 214         csq->next_to_clean = head;
 215         return clean;
 216 }
 217
 218 static int
 219 hns3_cmd_csq_done(struct hns3_hw *hw)
 220 {
 221         uint32_t head = hns3_read_dev(hw, HNS3_CMDQ_TX_HEAD_REG);
 222
 223         return head == hw->cmq.csq.next_to_use;
 224 }
 225
 226 static bool
 227 hns3_is_special_opcode(uint16_t opcode)
 228 {
 229         /*
 230          * These commands have several descriptors,
 231          * and use the first one to save opcode and return value.
 232          */
 233         uint16_t spec_opcode[] = {HNS3_OPC_STATS_64_BIT,
 234                                   HNS3_OPC_STATS_32_BIT,
 235                                   HNS3_OPC_STATS_MAC,
 236                                   HNS3_OPC_STATS_MAC_ALL,
 237                                   HNS3_OPC_QUERY_32_BIT_REG,
 238                                   HNS3_OPC_QUERY_64_BIT_REG,
 239                                   HNS3_OPC_QUERY_CLEAR_MPF_RAS_INT,
 240                                   HNS3_OPC_QUERY_CLEAR_PF_RAS_INT,
 241                                   HNS3_OPC_QUERY_CLEAR_ALL_MPF_MSIX_INT,
 242                                   HNS3_OPC_QUERY_CLEAR_ALL_PF_MSIX_INT,
 243                                   HNS3_OPC_QUERY_ALL_ERR_INFO,};
 244         uint32_t i;
 245
 246         for (i = 0; i < RTE_DIM(spec_opcode); i++)
 247                 if (spec_opcode[i] == opcode)
 248                         return true;
 249
 250         return false;
 251 }
 252
 253 static int
 254 hns3_cmd_convert_err_code(uint16_t desc_ret)
 255 {
 256         static const struct {
 257                 uint16_t imp_errcode;
 258                 int linux_errcode;
 259         } hns3_cmdq_status[] = {
 260                 {HNS3_CMD_EXEC_SUCCESS, 0},
 261                 {HNS3_CMD_NO_AUTH, -EPERM},
 262                 {HNS3_CMD_NOT_SUPPORTED, -EOPNOTSUPP},
 263                 {HNS3_CMD_QUEUE_FULL, -EXFULL},
 264                 {HNS3_CMD_NEXT_ERR, -ENOSR},
 265                 {HNS3_CMD_UNEXE_ERR, -ENOTBLK},
 266                 {HNS3_CMD_PARA_ERR, -EINVAL},
 267                 {HNS3_CMD_RESULT_ERR, -ERANGE},
 268                 {HNS3_CMD_TIMEOUT, -ETIME},
 269                 {HNS3_CMD_HILINK_ERR, -ENOLINK},
 270                 {HNS3_CMD_QUEUE_ILLEGAL, -ENXIO},
 271                 {HNS3_CMD_INVALID, -EBADR},
 272                 {HNS3_CMD_ROH_CHECK_FAIL, -EINVAL}
 273         };
 274
 275         uint32_t i;
 276
 277         for (i = 0; i < RTE_DIM(hns3_cmdq_status); i++)
 278                 if (hns3_cmdq_status[i].imp_errcode == desc_ret)
 279                         return hns3_cmdq_status[i].linux_errcode;
 280
 281         return -EREMOTEIO;
 282 }
 283
 284 static int
 285 hns3_cmd_get_hardware_reply(struct hns3_hw *hw,
 286                             struct hns3_cmd_desc *desc, int num, int ntc)
 287 {
 288         uint16_t opcode, desc_ret;
 289         int current_ntc = ntc;
 290         int handle;
 291
 292         opcode = rte_le_to_cpu_16(desc[0].opcode);
 293         for (handle = 0; handle < num; handle++) {
 294                 /* Get the result of hardware write back */
 295                 desc[handle] = hw->cmq.csq.desc[current_ntc];
 296
 297                 current_ntc++;
 298                 if (current_ntc == hw->cmq.csq.desc_num)
 299                         current_ntc = 0;
 300         }
 301
 302         if (likely(!hns3_is_special_opcode(opcode)))
 303                 desc_ret = rte_le_to_cpu_16(desc[num - 1].retval);
 304         else
 305                 desc_ret = rte_le_to_cpu_16(desc[0].retval);
 306
 307         hw->cmq.last_status = desc_ret;
 308         return hns3_cmd_convert_err_code(desc_ret);
 309 }
 310
 311 static int hns3_cmd_poll_reply(struct hns3_hw *hw)
 312 {
 313         struct hns3_adapter *hns = HNS3_DEV_HW_TO_ADAPTER(hw);
 314         uint32_t timeout = 0;
 315
 316         do {
 317                 if (hns3_cmd_csq_done(hw))
 318                         return 0;
 319
 320                 if (__atomic_load_n(&hw->reset.disable_cmd, __ATOMIC_RELAXED)) {
 321                         hns3_err(hw,
 322                                  "Don't wait for reply because of disable_cmd");
 323                         return -EBUSY;
 324                 }
 325
 326                 if (is_reset_pending(hns)) {
 327                         hns3_err(hw, "Don't wait for reply because of reset pending");
 328                         return -EIO;
 329                 }
 330
 331                 rte_delay_us(1);
 332                 timeout++;
 333         } while (timeout < hw->cmq.tx_timeout);
 334         hns3_err(hw, "Wait for reply timeout");
 335         return -ETIME;
 336 }
 337
 338 /*
 339  * hns3_cmd_send - send command to command queue
 340  *
 341  * @param hw
 342  *   pointer to the hw struct
 343  * @param desc
 344  *   prefilled descriptor for describing the command
 345  * @param num
 346  *   the number of descriptors to be sent
 347  * @return
 348  *   - -EBUSY if detect device is in resetting
 349  *   - -EIO   if detect cmd csq corrupted (due to reset) or
 350  *            there is reset pending
 351  *   - -ENOMEM/-ETIME/...(Non-Zero) if other error case
 352  *   - Zero   if operation completed successfully
 353  *
 354  * Note -BUSY/-EIO only used in reset case
 355  *
 356  * Note this is the main send command for command queue, it
 357  * sends the queue, cleans the queue, etc
 358  */
 359 int
 360 hns3_cmd_send(struct hns3_hw *hw, struct hns3_cmd_desc *desc, int num)
 361 {
 362         struct hns3_cmd_desc *desc_to_use;
 363         int handle = 0;
 364         int retval;
 365         uint32_t ntc;
 366
 367         if (__atomic_load_n(&hw->reset.disable_cmd, __ATOMIC_RELAXED))
 368                 return -EBUSY;
 369
 370         rte_spinlock_lock(&hw->cmq.csq.lock);
 371
 372         /* Clean the command send queue */
 373         retval = hns3_cmd_csq_clean(hw);
 374         if (retval < 0) {
 375                 rte_spinlock_unlock(&hw->cmq.csq.lock);
 376                 return retval;
 377         }
 378
 379         if (num > hns3_ring_space(&hw->cmq.csq)) {
 380                 rte_spinlock_unlock(&hw->cmq.csq.lock);
 381                 return -ENOMEM;
 382         }
 383
 384         /*
 385          * Record the location of desc in the ring for this time
 386          * which will be use for hardware to write back
 387          */
 388         ntc = hw->cmq.csq.next_to_use;
 389
 390         while (handle < num) {
 391                 desc_to_use = &hw->cmq.csq.desc[hw->cmq.csq.next_to_use];
 392                 *desc_to_use = desc[handle];
 393                 (hw->cmq.csq.next_to_use)++;
 394                 if (hw->cmq.csq.next_to_use == hw->cmq.csq.desc_num)
 395                         hw->cmq.csq.next_to_use = 0;
 396                 handle++;
 397         }
 398
 399         /* Write to hardware */
 400         hns3_write_dev(hw, HNS3_CMDQ_TX_TAIL_REG, hw->cmq.csq.next_to_use);
 401
 402         /*
 403          * If the command is sync, wait for the firmware to write back,
 404          * if multi descriptors to be sent, use the first one to check.
 405          */
 406         if (HNS3_CMD_SEND_SYNC(rte_le_to_cpu_16(desc->flag))) {
 407                 retval = hns3_cmd_poll_reply(hw);
 408                 if (!retval)
 409                         retval = hns3_cmd_get_hardware_reply(hw, desc, num,
 410                                                              ntc);
 411         }
 412
 413         rte_spinlock_unlock(&hw->cmq.csq.lock);
 414         return retval;
 415 }
 416
 417 static const char *
 418 hns3_get_caps_name(uint32_t caps_id)
 419 {
 420         const struct {
 421                 enum HNS3_CAPS_BITS caps;
 422                 const char *name;
 423         } dev_caps[] = {
 424                 { HNS3_CAPS_FD_QUEUE_REGION_B, "fd_queue_region" },
 425                 { HNS3_CAPS_PTP_B,             "ptp"             },
 426                 { HNS3_CAPS_TX_PUSH_B,         "tx_push"         },
 427                 { HNS3_CAPS_PHY_IMP_B,         "phy_imp"         },
 428                 { HNS3_CAPS_TQP_TXRX_INDEP_B,  "tqp_txrx_indep"  },
 429                 { HNS3_CAPS_HW_PAD_B,          "hw_pad"          },
 430                 { HNS3_CAPS_STASH_B,           "stash"           },
 431                 { HNS3_CAPS_UDP_TUNNEL_CSUM_B, "udp_tunnel_csum" },
 432                 { HNS3_CAPS_RAS_IMP_B,         "ras_imp"         },
 433                 { HNS3_CAPS_RXD_ADV_LAYOUT_B,  "rxd_adv_layout"  },
 434                 { HNS3_CAPS_TM_B,              "tm_capability"   }
 435         };
 436         uint32_t i;
 437
 438         for (i = 0; i < RTE_DIM(dev_caps); i++) {
 439                 if (dev_caps[i].caps == caps_id)
 440                         return dev_caps[i].name;
 441         }
 442
 443         return "unknown";
 444 }
 445
 446 static void
 447 hns3_mask_capability(struct hns3_hw *hw,
 448                      struct hns3_query_version_cmd *cmd)
 449 {
 450 #define MAX_CAPS_BIT    64
 451
 452         struct hns3_adapter *hns = HNS3_DEV_HW_TO_ADAPTER(hw);
 453         uint64_t caps_org, caps_new, caps_masked;
 454         uint32_t i;
 455
 456         if (hns->dev_caps_mask == 0)
 457                 return;
 458
 459         memcpy(&caps_org, &cmd->caps[0], sizeof(caps_org));
 460         caps_org = rte_le_to_cpu_64(caps_org);
 461         caps_new = caps_org ^ (caps_org & hns->dev_caps_mask);
 462         caps_masked = caps_org ^ caps_new;
 463         caps_new = rte_cpu_to_le_64(caps_new);
 464         memcpy(&cmd->caps[0], &caps_new, sizeof(caps_new));
 465
 466         for (i = 0; i < MAX_CAPS_BIT; i++) {
 467                 if (!(caps_masked & BIT_ULL(i)))
 468                         continue;
 469                 hns3_info(hw, "mask capabiliy: id-%u, name-%s.",
 470                           i, hns3_get_caps_name(i));
 471         }
 472 }
 473
 474 static void
 475 hns3_parse_capability(struct hns3_hw *hw,
 476                       struct hns3_query_version_cmd *cmd)
 477 {
 478         uint32_t caps = rte_le_to_cpu_32(cmd->caps[0]);
 479
 480         if (hns3_get_bit(caps, HNS3_CAPS_FD_QUEUE_REGION_B))
 481                 hns3_set_bit(hw->capability, HNS3_DEV_SUPPORT_FD_QUEUE_REGION_B,
 482                              1);
 483         if (hns3_get_bit(caps, HNS3_CAPS_PTP_B)) {
 484                 /*
 485                  * PTP depends on special packet type reported by hardware which
 486                  * enabled rxd advanced layout, so if the hardware doesn't
 487                  * support rxd advanced layout, driver should ignore the PTP
 488                  * capability.
 489                  */
 490                 if (hns3_get_bit(caps, HNS3_CAPS_RXD_ADV_LAYOUT_B))
 491                         hns3_set_bit(hw->capability, HNS3_DEV_SUPPORT_PTP_B, 1);
 492                 else
 493                         hns3_warn(hw, "ignore PTP capability due to lack of "
 494                                   "rxd advanced layout capability.");
 495         }
 496         if (hns3_get_bit(caps, HNS3_CAPS_TX_PUSH_B))
 497                 hns3_set_bit(hw->capability, HNS3_DEV_SUPPORT_TX_PUSH_B, 1);
 498         if (hns3_get_bit(caps, HNS3_CAPS_PHY_IMP_B))
 499                 hns3_set_bit(hw->capability, HNS3_DEV_SUPPORT_COPPER_B, 1);
 500         if (hns3_get_bit(caps, HNS3_CAPS_TQP_TXRX_INDEP_B))
 501                 hns3_set_bit(hw->capability, HNS3_DEV_SUPPORT_INDEP_TXRX_B, 1);
 502         if (hns3_get_bit(caps, HNS3_CAPS_STASH_B))
 503                 hns3_set_bit(hw->capability, HNS3_DEV_SUPPORT_STASH_B, 1);
 504         if (hns3_get_bit(caps, HNS3_CAPS_RXD_ADV_LAYOUT_B))
 505                 hns3_set_bit(hw->capability, HNS3_DEV_SUPPORT_RXD_ADV_LAYOUT_B,
 506                              1);
 507         if (hns3_get_bit(caps, HNS3_CAPS_UDP_TUNNEL_CSUM_B))
 508                 hns3_set_bit(hw->capability,
 509                                 HNS3_DEV_SUPPORT_OUTER_UDP_CKSUM_B, 1);
 510         if (hns3_get_bit(caps, HNS3_CAPS_RAS_IMP_B))
 511                 hns3_set_bit(hw->capability, HNS3_DEV_SUPPORT_RAS_IMP_B, 1);
 512         if (hns3_get_bit(caps, HNS3_CAPS_TM_B))
 513                 hns3_set_bit(hw->capability, HNS3_DEV_SUPPORT_TM_B, 1);
 514 }
 515
 516 static uint32_t
 517 hns3_build_api_caps(void)
 518 {
 519         uint32_t api_caps = 0;
 520
 521         hns3_set_bit(api_caps, HNS3_API_CAP_FLEX_RSS_TBL_B, 1);
 522
 523         return rte_cpu_to_le_32(api_caps);
 524 }
 525
 526 static int
 527 hns3_cmd_query_firmware_version_and_capability(struct hns3_hw *hw)
 528 {
 529         struct hns3_query_version_cmd *resp;
 530         struct hns3_cmd_desc desc;
 531         int ret;
 532
 533         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_QUERY_FW_VER, 1);
 534         resp = (struct hns3_query_version_cmd *)desc.data;
 535         resp->api_caps = hns3_build_api_caps();
 536
 537         /* Initialize the cmd function */
 538         ret = hns3_cmd_send(hw, &desc, 1);
 539         if (ret)
 540                 return ret;
 541
 542         hw->fw_version = rte_le_to_cpu_32(resp->firmware);
 543         /*
 544          * Make sure mask the capability before parse capability because it
 545          * may overwrite resp's data.
 546          */
 547         hns3_mask_capability(hw, resp);
 548         hns3_parse_capability(hw, resp);
 549
 550         return 0;
 551 }
 552
 553 int
 554 hns3_cmd_init_queue(struct hns3_hw *hw)
 555 {
 556         int ret;
 557
 558         /* Setup the lock for command queue */
 559         rte_spinlock_init(&hw->cmq.csq.lock);
 560         rte_spinlock_init(&hw->cmq.crq.lock);
 561
 562         /*
 563          * Clear up all command register,
 564          * in case there are some residual values
 565          */
 566         hns3_cmd_clear_regs(hw);
 567
 568         /* Setup the queue entries for use cmd queue */
 569         hw->cmq.csq.desc_num = HNS3_NIC_CMQ_DESC_NUM;
 570         hw->cmq.crq.desc_num = HNS3_NIC_CMQ_DESC_NUM;
 571
 572         /* Setup Tx write back timeout */
 573         hw->cmq.tx_timeout = HNS3_CMDQ_TX_TIMEOUT;
 574
 575         /* Setup queue rings */
 576         ret = hns3_alloc_cmd_queue(hw, HNS3_TYPE_CSQ);
 577         if (ret) {
 578                 PMD_INIT_LOG(ERR, "CSQ ring setup error %d", ret);
 579                 return ret;
 580         }
 581
 582         ret = hns3_alloc_cmd_queue(hw, HNS3_TYPE_CRQ);
 583         if (ret) {
 584                 PMD_INIT_LOG(ERR, "CRQ ring setup error %d", ret);
 585                 goto err_crq;
 586         }
 587
 588         return 0;
 589
 590 err_crq:
 591         hns3_free_cmd_desc(hw, &hw->cmq.csq);
 592
 593         return ret;
 594 }
 595
 596 static void
 597 hns3_update_dev_lsc_cap(struct hns3_hw *hw, int fw_compact_cmd_result)
 598 {
 599         struct rte_eth_dev *dev = &rte_eth_devices[hw->data->port_id];
 600
 601         if (hw->adapter_state != HNS3_NIC_UNINITIALIZED)
 602                 return;
 603
 604         if (fw_compact_cmd_result != 0) {
 605                 /*
 606                  * If fw_compact_cmd_result is not zero, it means firmware don't
 607                  * support link status change interrupt.
 608                  * Framework already set RTE_ETH_DEV_INTR_LSC bit because driver
 609                  * declared RTE_PCI_DRV_INTR_LSC in drv_flags. It need to clear
 610                  * the RTE_ETH_DEV_INTR_LSC capability when detect firmware
 611                  * don't support link status change interrupt.
 612                  */
 613                 dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC;
 614         }
 615 }
 616
 617 static int
 618 hns3_apply_fw_compat_cmd_result(struct hns3_hw *hw, int result)
 619 {
 620         if (result != 0 && hns3_dev_copper_supported(hw)) {
 621                 hns3_err(hw, "firmware fails to initialize the PHY, ret = %d.",
 622                          result);
 623                 return result;
 624         }
 625
 626         hns3_update_dev_lsc_cap(hw, result);
 627
 628         return 0;
 629 }
 630
 631 static int
 632 hns3_firmware_compat_config(struct hns3_hw *hw, bool is_init)
 633 {
 634         struct hns3_firmware_compat_cmd *req;
 635         struct hns3_cmd_desc desc;
 636         uint32_t compat = 0;
 637
 638 #if defined(RTE_HNS3_ONLY_1630_FPGA)
 639         /* If resv reg enabled phy driver of imp is not configured, driver
 640          * will use temporary phy driver.
 641          */
 642         struct rte_pci_device *pci_dev;
 643         struct rte_eth_dev *eth_dev;
 644         uint8_t revision;
 645         int ret;
 646
 647         eth_dev = &rte_eth_devices[hw->data->port_id];
 648         pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
 649         /* Get PCI revision id */
 650         ret = rte_pci_read_config(pci_dev, &revision, HNS3_PCI_REVISION_ID_LEN,
 651                                   HNS3_PCI_REVISION_ID);
 652         if (ret != HNS3_PCI_REVISION_ID_LEN) {
 653                 PMD_INIT_LOG(ERR, "failed to read pci revision id, ret = %d",
 654                              ret);
 655                 return -EIO;
 656         }
 657         if (revision == PCI_REVISION_ID_HIP09_A) {
 658                 struct hns3_pf *pf = HNS3_DEV_HW_TO_PF(hw);
 659                 if (hns3_dev_copper_supported(hw) == 0 || pf->is_tmp_phy) {
 660                         PMD_INIT_LOG(ERR, "***use temp phy driver in dpdk***");
 661                         pf->is_tmp_phy = true;
 662                         hns3_set_bit(hw->capability,
 663                                      HNS3_DEV_SUPPORT_COPPER_B, 1);
 664                         return 0;
 665                 }
 666
 667                 PMD_INIT_LOG(ERR, "***use phy driver in imp***");
 668         }
 669 #endif
 670
 671         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_FIRMWARE_COMPAT_CFG, false);
 672         req = (struct hns3_firmware_compat_cmd *)desc.data;
 673
 674         if (is_init) {
 675                 hns3_set_bit(compat, HNS3_LINK_EVENT_REPORT_EN_B, 1);
 676                 hns3_set_bit(compat, HNS3_NCSI_ERROR_REPORT_EN_B, 0);
 677                 if (hns3_dev_copper_supported(hw))
 678                         hns3_set_bit(compat, HNS3_FIRMWARE_PHY_DRIVER_EN_B, 1);
 679         }
 680         req->compat = rte_cpu_to_le_32(compat);
 681
 682         return hns3_cmd_send(hw, &desc, 1);
 683 }
 684
 685 int
 686 hns3_cmd_init(struct hns3_hw *hw)
 687 {
 688         struct hns3_adapter *hns = HNS3_DEV_HW_TO_ADAPTER(hw);
 689         uint32_t version;
 690         int ret;
 691
 692         rte_spinlock_lock(&hw->cmq.csq.lock);
 693         rte_spinlock_lock(&hw->cmq.crq.lock);
 694
 695         hw->cmq.csq.next_to_clean = 0;
 696         hw->cmq.csq.next_to_use = 0;
 697         hw->cmq.crq.next_to_clean = 0;
 698         hw->cmq.crq.next_to_use = 0;
 699         hw->mbx_resp.head = 0;
 700         hw->mbx_resp.tail = 0;
 701         hw->mbx_resp.lost = 0;
 702         hns3_cmd_init_regs(hw);
 703
 704         rte_spinlock_unlock(&hw->cmq.crq.lock);
 705         rte_spinlock_unlock(&hw->cmq.csq.lock);
 706
 707         /*
 708          * Check if there is new reset pending, because the higher level
 709          * reset may happen when lower level reset is being processed.
 710          */
 711         if (is_reset_pending(HNS3_DEV_HW_TO_ADAPTER(hw))) {
 712                 PMD_INIT_LOG(ERR, "New reset pending, keep disable cmd");
 713                 ret = -EBUSY;
 714                 goto err_cmd_init;
 715         }
 716         __atomic_store_n(&hw->reset.disable_cmd, 0, __ATOMIC_RELAXED);
 717
 718         ret = hns3_cmd_query_firmware_version_and_capability(hw);
 719         if (ret) {
 720                 PMD_INIT_LOG(ERR, "firmware version query failed %d", ret);
 721                 goto err_cmd_init;
 722         }
 723
 724         version = hw->fw_version;
 725         PMD_INIT_LOG(INFO, "The firmware version is %lu.%lu.%lu.%lu",
 726                      hns3_get_field(version, HNS3_FW_VERSION_BYTE3_M,
 727                                     HNS3_FW_VERSION_BYTE3_S),
 728                      hns3_get_field(version, HNS3_FW_VERSION_BYTE2_M,
 729                                     HNS3_FW_VERSION_BYTE2_S),
 730                      hns3_get_field(version, HNS3_FW_VERSION_BYTE1_M,
 731                                     HNS3_FW_VERSION_BYTE1_S),
 732                      hns3_get_field(version, HNS3_FW_VERSION_BYTE0_M,
 733                                     HNS3_FW_VERSION_BYTE0_S));
 734
 735         if (hns->is_vf)
 736                 return 0;
 737
 738         /*
 739          * Requiring firmware to enable some features, firber port can still
 740          * work without it, but copper port can't work because the firmware
 741          * fails to take over the PHY.
 742          */
 743         ret = hns3_firmware_compat_config(hw, true);
 744         if (ret)
 745                 PMD_INIT_LOG(WARNING, "firmware compatible features not "
 746                              "supported, ret = %d.", ret);
 747
 748         /*
 749          * Perform some corresponding operations based on the firmware
 750          * compatibility configuration result.
 751          */
 752         ret = hns3_apply_fw_compat_cmd_result(hw, ret);
 753         if (ret)
 754                 goto err_cmd_init;
 755
 756         return 0;
 757
 758 err_cmd_init:
 759         __atomic_store_n(&hw->reset.disable_cmd, 1, __ATOMIC_RELAXED);
 760         return ret;
 761 }
 762
 763 static void
 764 hns3_destroy_queue(struct hns3_hw *hw, struct hns3_cmq_ring *ring)
 765 {
 766         rte_spinlock_lock(&ring->lock);
 767
 768         hns3_free_cmd_desc(hw, ring);
 769
 770         rte_spinlock_unlock(&ring->lock);
 771 }
 772
 773 void
 774 hns3_cmd_destroy_queue(struct hns3_hw *hw)
 775 {
 776         hns3_destroy_queue(hw, &hw->cmq.csq);
 777         hns3_destroy_queue(hw, &hw->cmq.crq);
 778 }
 779
 780 void
 781 hns3_cmd_uninit(struct hns3_hw *hw)
 782 {
 783         struct hns3_adapter *hns = HNS3_DEV_HW_TO_ADAPTER(hw);
 784
 785         if (!hns->is_vf)
 786                 (void)hns3_firmware_compat_config(hw, false);
 787
 788         __atomic_store_n(&hw->reset.disable_cmd, 1, __ATOMIC_RELAXED);
 789
 790         /*
 791          * A delay is added to ensure that the register cleanup operations
 792          * will not be performed concurrently with the firmware command and
 793          * ensure that all the reserved commands are executed.
 794          * Concurrency may occur in two scenarios: asynchronous command and
 795          * timeout command. If the command fails to be executed due to busy
 796          * scheduling, the command will be processed in the next scheduling
 797          * of the firmware.
 798          */
 799         rte_delay_ms(HNS3_CMDQ_CLEAR_WAIT_TIME);
 800
 801         rte_spinlock_lock(&hw->cmq.csq.lock);
 802         rte_spinlock_lock(&hw->cmq.crq.lock);
 803         hns3_cmd_clear_regs(hw);
 804         rte_spinlock_unlock(&hw->cmq.crq.lock);
 805         rte_spinlock_unlock(&hw->cmq.csq.lock);
 806 }