drivers/net/bnxt/bnxt_cpr.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2014-2021 Broadcom
   3  * All rights reserved.
   4  */
   5
   6 #include <rte_malloc.h>
   7 #include <rte_alarm.h>
   8 #include <rte_cycles.h>
   9
  10 #include "bnxt.h"
  11 #include "bnxt_hwrm.h"
  12 #include "bnxt_ring.h"
  13 #include "hsi_struct_def_dpdk.h"
  14
  15 void bnxt_wait_for_device_shutdown(struct bnxt *bp)
  16 {
  17         uint32_t val, timeout;
  18
  19         /* if HWRM_FUNC_QCAPS_OUTPUT_FLAGS_ERR_RECOVER_RELOAD is set
  20          * in HWRM_FUNC_QCAPS command, wait for FW_STATUS to set
  21          * the SHUTDOWN bit in health register
  22          */
  23         if (!(bp->recovery_info &&
  24               (bp->fw_cap & BNXT_FW_CAP_ERR_RECOVER_RELOAD)))
  25                 return;
  26
  27         /* Driver has to wait for fw_reset_max_msecs or shutdown bit which comes
  28          * first for FW to collect crash dump.
  29          */
  30         timeout = bp->fw_reset_max_msecs;
  31
  32         /* Driver has to poll for shutdown bit in fw_status register
  33          *
  34          * 1. in case of hot fw upgrade, this bit will be set after all
  35          *    function drivers unregistered with fw.
  36          * 2. in case of fw initiated error recovery, this bit will be
  37          *    set after fw has collected the core dump
  38          */
  39         do {
  40                 val = bnxt_read_fw_status_reg(bp, BNXT_FW_STATUS_REG);
  41                 if (val & BNXT_FW_STATUS_SHUTDOWN)
  42                         return;
  43
  44                 rte_delay_ms(100);
  45                 timeout -= 100;
  46         } while (timeout);
  47 }
  48
  49 static void
  50 bnxt_process_default_vnic_change(struct bnxt *bp,
  51                                  struct hwrm_async_event_cmpl *async_cmp)
  52 {
  53         uint16_t vnic_state, vf_fid, vf_id;
  54         struct bnxt_representor *vf_rep_bp;
  55         struct rte_eth_dev *eth_dev;
  56         bool vfr_found = false;
  57         uint32_t event_data;
  58
  59         if (!BNXT_TRUFLOW_EN(bp))
  60                 return;
  61
  62         PMD_DRV_LOG(INFO, "Default vnic change async event received\n");
  63         event_data = rte_le_to_cpu_32(async_cmp->event_data1);
  64
  65         vnic_state = (event_data & BNXT_DEFAULT_VNIC_STATE_MASK) >>
  66                         BNXT_DEFAULT_VNIC_STATE_SFT;
  67         if (vnic_state != BNXT_DEFAULT_VNIC_ALLOC)
  68                 return;
  69
  70         if (!bp->rep_info)
  71                 return;
  72
  73         vf_fid = (event_data & BNXT_DEFAULT_VNIC_CHANGE_VF_ID_MASK) >>
  74                         BNXT_DEFAULT_VNIC_CHANGE_VF_ID_SFT;
  75         PMD_DRV_LOG(INFO, "async event received vf_id 0x%x\n", vf_fid);
  76
  77         for (vf_id = 0; vf_id < BNXT_MAX_VF_REPS; vf_id++) {
  78                 eth_dev = bp->rep_info[vf_id].vfr_eth_dev;
  79                 if (!eth_dev)
  80                         continue;
  81                 vf_rep_bp = eth_dev->data->dev_private;
  82                 if (vf_rep_bp &&
  83                     vf_rep_bp->fw_fid == vf_fid) {
  84                         vfr_found = true;
  85                         break;
  86                 }
  87         }
  88         if (!vfr_found)
  89                 return;
  90
  91         bnxt_rep_dev_start_op(eth_dev);
  92 }
  93
  94 static void bnxt_handle_event_error_report(struct bnxt *bp,
  95                                            uint32_t data1,
  96                                            uint32_t data2)
  97 {
  98         switch (BNXT_EVENT_ERROR_REPORT_TYPE(data1)) {
  99         case HWRM_ASYNC_EVENT_CMPL_ERROR_REPORT_BASE_EVENT_DATA1_ERROR_TYPE_PAUSE_STORM:
 100                 PMD_DRV_LOG(WARNING, "Port:%d Pause Storm detected!\n",
 101                             bp->eth_dev->data->port_id);
 102                 break;
 103         default:
 104                 PMD_DRV_LOG(INFO, "FW reported unknown error type data1 %d"
 105                             " data2: %d\n", data1, data2);
 106                 break;
 107         }
 108 }
 109
 110 /*
 111  * Async event handling
 112  */
 113 void bnxt_handle_async_event(struct bnxt *bp,
 114                              struct cmpl_base *cmp)
 115 {
 116         struct hwrm_async_event_cmpl *async_cmp =
 117                                 (struct hwrm_async_event_cmpl *)cmp;
 118         uint16_t event_id = rte_le_to_cpu_16(async_cmp->event_id);
 119         uint16_t port_id = bp->eth_dev->data->port_id;
 120         struct bnxt_error_recovery_info *info;
 121         uint32_t event_data;
 122         uint32_t data1, data2;
 123
 124         data1 = rte_le_to_cpu_32(async_cmp->event_data1);
 125         data2 = rte_le_to_cpu_32(async_cmp->event_data2);
 126
 127         switch (event_id) {
 128         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_LINK_STATUS_CHANGE:
 129         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_LINK_SPEED_CHANGE:
 130         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_LINK_SPEED_CFG_CHANGE:
 131                 /* FALLTHROUGH */
 132                 bnxt_link_update_op(bp->eth_dev, 0);
 133                 rte_eth_dev_callback_process(bp->eth_dev,
 134                         RTE_ETH_EVENT_INTR_LSC, NULL);
 135                 break;
 136         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_PF_DRVR_UNLOAD:
 137                 PMD_DRV_LOG(INFO, "Async event: PF driver unloaded\n");
 138                 break;
 139         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_VF_CFG_CHANGE:
 140                 PMD_DRV_LOG(INFO, "Async event: VF config changed\n");
 141                 bnxt_hwrm_func_qcfg(bp, NULL);
 142                 break;
 143         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_PORT_CONN_NOT_ALLOWED:
 144                 PMD_DRV_LOG(INFO, "Port conn async event\n");
 145                 break;
 146         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_RESET_NOTIFY:
 147                 /*
 148                  * Avoid any rx/tx packet processing during firmware reset
 149                  * operation.
 150                  */
 151                 bnxt_stop_rxtx(bp);
 152
 153                 /* Ignore reset notify async events when stopping the port */
 154                 if (!bp->eth_dev->data->dev_started) {
 155                         bp->flags |= BNXT_FLAG_FATAL_ERROR;
 156                         return;
 157                 }
 158
 159                 pthread_mutex_lock(&bp->err_recovery_lock);
 160                 event_data = data1;
 161                 /* timestamp_lo/hi values are in units of 100ms */
 162                 bp->fw_reset_max_msecs = async_cmp->timestamp_hi ?
 163                         rte_le_to_cpu_16(async_cmp->timestamp_hi) * 100 :
 164                         BNXT_MAX_FW_RESET_TIMEOUT;
 165                 bp->fw_reset_min_msecs = async_cmp->timestamp_lo ?
 166                         async_cmp->timestamp_lo * 100 :
 167                         BNXT_MIN_FW_READY_TIMEOUT;
 168                 if ((event_data & EVENT_DATA1_REASON_CODE_MASK) ==
 169                     EVENT_DATA1_REASON_CODE_FW_EXCEPTION_FATAL) {
 170                         PMD_DRV_LOG(INFO,
 171                                     "Port %u: Firmware fatal reset event received\n",
 172                                     port_id);
 173                         bp->flags |= BNXT_FLAG_FATAL_ERROR;
 174                 } else {
 175                         PMD_DRV_LOG(INFO,
 176                                     "Port %u: Firmware non-fatal reset event received\n",
 177                                     port_id);
 178                 }
 179
 180                 bp->flags |= BNXT_FLAG_FW_RESET;
 181                 pthread_mutex_unlock(&bp->err_recovery_lock);
 182                 rte_eal_alarm_set(US_PER_MS, bnxt_dev_reset_and_resume,
 183                                   (void *)bp);
 184                 break;
 185         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_ERROR_RECOVERY:
 186                 info = bp->recovery_info;
 187
 188                 if (!info)
 189                         return;
 190
 191                 PMD_DRV_LOG(INFO, "Port %u: Error recovery async event received\n",
 192                             port_id);
 193
 194                 event_data = data1 & EVENT_DATA1_FLAGS_MASK;
 195
 196                 if (event_data & EVENT_DATA1_FLAGS_MASTER_FUNC)
 197                         info->flags |= BNXT_FLAG_MASTER_FUNC;
 198                 else
 199                         info->flags &= ~BNXT_FLAG_MASTER_FUNC;
 200
 201                 if (event_data & EVENT_DATA1_FLAGS_RECOVERY_ENABLED)
 202                         info->flags |= BNXT_FLAG_RECOVERY_ENABLED;
 203                 else
 204                         info->flags &= ~BNXT_FLAG_RECOVERY_ENABLED;
 205
 206                 PMD_DRV_LOG(INFO, "Port %u: recovery enabled(%d), master function(%d)\n",
 207                             port_id, bnxt_is_recovery_enabled(bp),
 208                             bnxt_is_master_func(bp));
 209
 210                 if (bp->flags & BNXT_FLAG_FW_HEALTH_CHECK_SCHEDULED)
 211                         return;
 212
 213                 info->last_heart_beat =
 214                         bnxt_read_fw_status_reg(bp, BNXT_FW_HEARTBEAT_CNT_REG);
 215                 info->last_reset_counter =
 216                         bnxt_read_fw_status_reg(bp, BNXT_FW_RECOVERY_CNT_REG);
 217
 218                 bnxt_schedule_fw_health_check(bp);
 219                 break;
 220         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_DEBUG_NOTIFICATION:
 221                 PMD_DRV_LOG(INFO, "Port: %u DNC event: data1 %#x data2 %#x\n",
 222                             port_id, data1, data2);
 223                 break;
 224         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_DEFAULT_VNIC_CHANGE:
 225                 bnxt_process_default_vnic_change(bp, async_cmp);
 226                 break;
 227         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_ECHO_REQUEST:
 228                 PMD_DRV_LOG(INFO,
 229                             "Port %u: Received fw echo request: data1 %#x data2 %#x\n",
 230                             port_id, data1, data2);
 231                 if (bp->recovery_info)
 232                         bnxt_hwrm_fw_echo_reply(bp, data1, data2);
 233                 break;
 234         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_ERROR_REPORT:
 235                 bnxt_handle_event_error_report(bp, data1, data2);
 236                 break;
 237         default:
 238                 PMD_DRV_LOG(DEBUG, "handle_async_event id = 0x%x\n", event_id);
 239                 break;
 240         }
 241 }
 242
 243 void bnxt_handle_fwd_req(struct bnxt *bp, struct cmpl_base *cmpl)
 244 {
 245         struct hwrm_exec_fwd_resp_input *fwreq;
 246         struct hwrm_fwd_req_cmpl *fwd_cmpl = (struct hwrm_fwd_req_cmpl *)cmpl;
 247         struct input *fwd_cmd;
 248         uint16_t fw_vf_id;
 249         uint16_t vf_id;
 250         uint16_t req_len;
 251         int rc;
 252
 253         if (bp->pf->active_vfs <= 0) {
 254                 PMD_DRV_LOG(ERR, "Forwarded VF with no active VFs\n");
 255                 return;
 256         }
 257
 258         /* Qualify the fwd request */
 259         fw_vf_id = rte_le_to_cpu_16(fwd_cmpl->source_id);
 260         vf_id = fw_vf_id - bp->pf->first_vf_id;
 261
 262         req_len = (rte_le_to_cpu_16(fwd_cmpl->req_len_type) &
 263                    HWRM_FWD_REQ_CMPL_REQ_LEN_MASK) >>
 264                 HWRM_FWD_REQ_CMPL_REQ_LEN_SFT;
 265         if (req_len > sizeof(fwreq->encap_request))
 266                 req_len = sizeof(fwreq->encap_request);
 267
 268         /* Locate VF's forwarded command */
 269         fwd_cmd = (struct input *)bp->pf->vf_info[vf_id].req_buf;
 270
 271         if (fw_vf_id < bp->pf->first_vf_id ||
 272             fw_vf_id >= bp->pf->first_vf_id + bp->pf->active_vfs) {
 273                 PMD_DRV_LOG(ERR,
 274                 "FWD req's source_id 0x%x out of range 0x%x - 0x%x (%d %d)\n",
 275                         fw_vf_id, bp->pf->first_vf_id,
 276                         (bp->pf->first_vf_id) + bp->pf->active_vfs - 1,
 277                         bp->pf->first_vf_id, bp->pf->active_vfs);
 278                 goto reject;
 279         }
 280
 281         if (bnxt_rcv_msg_from_vf(bp, vf_id, fwd_cmd)) {
 282                 /*
 283                  * In older firmware versions, the MAC had to be all zeros for
 284                  * the VF to set it's MAC via hwrm_func_vf_cfg. Set to all
 285                  * zeros if it's being configured and has been ok'd by caller.
 286                  */
 287                 if (fwd_cmd->req_type == HWRM_FUNC_VF_CFG) {
 288                         struct hwrm_func_vf_cfg_input *vfc = (void *)fwd_cmd;
 289
 290                         if (vfc->enables &
 291                             HWRM_FUNC_VF_CFG_INPUT_ENABLES_DFLT_MAC_ADDR) {
 292                                 bnxt_hwrm_func_vf_mac(bp, vf_id,
 293                                 (const uint8_t *)"\x00\x00\x00\x00\x00");
 294                         }
 295                 }
 296
 297                 if (fwd_cmd->req_type == HWRM_CFA_L2_SET_RX_MASK) {
 298                         struct hwrm_cfa_l2_set_rx_mask_input *srm =
 299                                                         (void *)fwd_cmd;
 300
 301                         srm->vlan_tag_tbl_addr = rte_cpu_to_le_64(0);
 302                         srm->num_vlan_tags = rte_cpu_to_le_32(0);
 303                         srm->mask &= ~rte_cpu_to_le_32(
 304                                 HWRM_CFA_L2_SET_RX_MASK_INPUT_MASK_VLANONLY |
 305                             HWRM_CFA_L2_SET_RX_MASK_INPUT_MASK_VLAN_NONVLAN |
 306                             HWRM_CFA_L2_SET_RX_MASK_INPUT_MASK_ANYVLAN_NONVLAN);
 307                 }
 308
 309                 /* Forward */
 310                 rc = bnxt_hwrm_exec_fwd_resp(bp, fw_vf_id, fwd_cmd, req_len);
 311                 if (rc) {
 312                         PMD_DRV_LOG(ERR,
 313                                 "Failed to send FWD req VF 0x%x, type 0x%x.\n",
 314                                 fw_vf_id - bp->pf->first_vf_id,
 315                                 rte_le_to_cpu_16(fwd_cmd->req_type));
 316                 }
 317                 return;
 318         }
 319
 320 reject:
 321         rc = bnxt_hwrm_reject_fwd_resp(bp, fw_vf_id, fwd_cmd, req_len);
 322         if (rc) {
 323                 PMD_DRV_LOG(ERR,
 324                         "Failed to send REJECT req VF 0x%x, type 0x%x.\n",
 325                         fw_vf_id - bp->pf->first_vf_id,
 326                         rte_le_to_cpu_16(fwd_cmd->req_type));
 327         }
 328
 329         return;
 330 }
 331
 332 int bnxt_event_hwrm_resp_handler(struct bnxt *bp, struct cmpl_base *cmp)
 333 {
 334         bool evt = 0;
 335
 336         if (bp == NULL || cmp == NULL) {
 337                 PMD_DRV_LOG(ERR, "invalid NULL argument\n");
 338                 return evt;
 339         }
 340
 341         if (unlikely(is_bnxt_in_error(bp)))
 342                 return 0;
 343
 344         switch (CMP_TYPE(cmp)) {
 345         case CMPL_BASE_TYPE_HWRM_ASYNC_EVENT:
 346                 /* Handle any async event */
 347                 bnxt_handle_async_event(bp, cmp);
 348                 evt = 1;
 349                 break;
 350         case CMPL_BASE_TYPE_HWRM_FWD_REQ:
 351                 /* Handle HWRM forwarded responses */
 352                 bnxt_handle_fwd_req(bp, cmp);
 353                 evt = 1;
 354                 break;
 355         default:
 356                 /* Ignore any other events */
 357                 PMD_DRV_LOG(DEBUG, "Ignoring %02x completion\n", CMP_TYPE(cmp));
 358                 break;
 359         }
 360
 361         return evt;
 362 }
 363
 364 bool bnxt_is_master_func(struct bnxt *bp)
 365 {
 366         if (bp->recovery_info->flags & BNXT_FLAG_MASTER_FUNC)
 367                 return true;
 368
 369         return false;
 370 }
 371
 372 bool bnxt_is_recovery_enabled(struct bnxt *bp)
 373 {
 374         struct bnxt_error_recovery_info *info;
 375
 376         info = bp->recovery_info;
 377         if (info && (info->flags & BNXT_FLAG_RECOVERY_ENABLED))
 378                 return true;
 379
 380         return false;
 381 }
 382
 383 void bnxt_stop_rxtx(struct bnxt *bp)
 384 {
 385         bp->eth_dev->rx_pkt_burst = &bnxt_dummy_recv_pkts;
 386         bp->eth_dev->tx_pkt_burst = &bnxt_dummy_xmit_pkts;
 387 }