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 /*
  95  * Async event handling
  96  */
  97 void bnxt_handle_async_event(struct bnxt *bp,
  98                              struct cmpl_base *cmp)
  99 {
 100         struct hwrm_async_event_cmpl *async_cmp =
 101                                 (struct hwrm_async_event_cmpl *)cmp;
 102         uint16_t event_id = rte_le_to_cpu_16(async_cmp->event_id);
 103         uint16_t port_id = bp->eth_dev->data->port_id;
 104         struct bnxt_error_recovery_info *info;
 105         uint32_t event_data;
 106
 107         switch (event_id) {
 108         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_LINK_STATUS_CHANGE:
 109         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_LINK_SPEED_CHANGE:
 110         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_LINK_SPEED_CFG_CHANGE:
 111                 /* FALLTHROUGH */
 112                 bnxt_link_update_op(bp->eth_dev, 0);
 113                 break;
 114         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_PF_DRVR_UNLOAD:
 115                 PMD_DRV_LOG(INFO, "Async event: PF driver unloaded\n");
 116                 break;
 117         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_VF_CFG_CHANGE:
 118                 PMD_DRV_LOG(INFO, "Async event: VF config changed\n");
 119                 bnxt_hwrm_func_qcfg(bp, NULL);
 120                 break;
 121         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_PORT_CONN_NOT_ALLOWED:
 122                 PMD_DRV_LOG(INFO, "Port conn async event\n");
 123                 break;
 124         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_RESET_NOTIFY:
 125                 /*
 126                  * Avoid any rx/tx packet processing during firmware reset
 127                  * operation.
 128                  */
 129                 bnxt_stop_rxtx(bp);
 130
 131                 /* Ignore reset notify async events when stopping the port */
 132                 if (!bp->eth_dev->data->dev_started) {
 133                         bp->flags |= BNXT_FLAG_FATAL_ERROR;
 134                         return;
 135                 }
 136
 137                 pthread_mutex_lock(&bp->err_recovery_lock);
 138                 event_data = rte_le_to_cpu_32(async_cmp->event_data1);
 139                 /* timestamp_lo/hi values are in units of 100ms */
 140                 bp->fw_reset_max_msecs = async_cmp->timestamp_hi ?
 141                         rte_le_to_cpu_16(async_cmp->timestamp_hi) * 100 :
 142                         BNXT_MAX_FW_RESET_TIMEOUT;
 143                 bp->fw_reset_min_msecs = async_cmp->timestamp_lo ?
 144                         async_cmp->timestamp_lo * 100 :
 145                         BNXT_MIN_FW_READY_TIMEOUT;
 146                 if ((event_data & EVENT_DATA1_REASON_CODE_MASK) ==
 147                     EVENT_DATA1_REASON_CODE_FW_EXCEPTION_FATAL) {
 148                         PMD_DRV_LOG(INFO,
 149                                     "Port %u: Firmware fatal reset event received\n",
 150                                     port_id);
 151                         bp->flags |= BNXT_FLAG_FATAL_ERROR;
 152                 } else {
 153                         PMD_DRV_LOG(INFO,
 154                                     "Port %u: Firmware non-fatal reset event received\n",
 155                                     port_id);
 156                 }
 157
 158                 bp->flags |= BNXT_FLAG_FW_RESET;
 159                 pthread_mutex_unlock(&bp->err_recovery_lock);
 160                 rte_eal_alarm_set(US_PER_MS, bnxt_dev_reset_and_resume,
 161                                   (void *)bp);
 162                 break;
 163         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_ERROR_RECOVERY:
 164                 info = bp->recovery_info;
 165
 166                 if (!info)
 167                         return;
 168
 169                 PMD_DRV_LOG(INFO, "Port %u: Error recovery async event received\n",
 170                             port_id);
 171
 172                 event_data = rte_le_to_cpu_32(async_cmp->event_data1) &
 173                                 EVENT_DATA1_FLAGS_MASK;
 174
 175                 if (event_data & EVENT_DATA1_FLAGS_MASTER_FUNC)
 176                         info->flags |= BNXT_FLAG_MASTER_FUNC;
 177                 else
 178                         info->flags &= ~BNXT_FLAG_MASTER_FUNC;
 179
 180                 if (event_data & EVENT_DATA1_FLAGS_RECOVERY_ENABLED)
 181                         info->flags |= BNXT_FLAG_RECOVERY_ENABLED;
 182                 else
 183                         info->flags &= ~BNXT_FLAG_RECOVERY_ENABLED;
 184
 185                 PMD_DRV_LOG(INFO, "Port %u: recovery enabled(%d), master function(%d)\n",
 186                             port_id, bnxt_is_recovery_enabled(bp),
 187                             bnxt_is_master_func(bp));
 188
 189                 if (bp->flags & BNXT_FLAG_FW_HEALTH_CHECK_SCHEDULED)
 190                         return;
 191
 192                 info->last_heart_beat =
 193                         bnxt_read_fw_status_reg(bp, BNXT_FW_HEARTBEAT_CNT_REG);
 194                 info->last_reset_counter =
 195                         bnxt_read_fw_status_reg(bp, BNXT_FW_RECOVERY_CNT_REG);
 196
 197                 bnxt_schedule_fw_health_check(bp);
 198                 break;
 199         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_DEBUG_NOTIFICATION:
 200                 PMD_DRV_LOG(INFO, "DNC event: evt_data1 %#x evt_data2 %#x\n",
 201                             rte_le_to_cpu_32(async_cmp->event_data1),
 202                             rte_le_to_cpu_32(async_cmp->event_data2));
 203                 break;
 204         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_DEFAULT_VNIC_CHANGE:
 205                 bnxt_process_default_vnic_change(bp, async_cmp);
 206                 break;
 207         default:
 208                 PMD_DRV_LOG(DEBUG, "handle_async_event id = 0x%x\n", event_id);
 209                 break;
 210         }
 211 }
 212
 213 void bnxt_handle_fwd_req(struct bnxt *bp, struct cmpl_base *cmpl)
 214 {
 215         struct hwrm_exec_fwd_resp_input *fwreq;
 216         struct hwrm_fwd_req_cmpl *fwd_cmpl = (struct hwrm_fwd_req_cmpl *)cmpl;
 217         struct input *fwd_cmd;
 218         uint16_t fw_vf_id;
 219         uint16_t vf_id;
 220         uint16_t req_len;
 221         int rc;
 222
 223         if (bp->pf->active_vfs <= 0) {
 224                 PMD_DRV_LOG(ERR, "Forwarded VF with no active VFs\n");
 225                 return;
 226         }
 227
 228         /* Qualify the fwd request */
 229         fw_vf_id = rte_le_to_cpu_16(fwd_cmpl->source_id);
 230         vf_id = fw_vf_id - bp->pf->first_vf_id;
 231
 232         req_len = (rte_le_to_cpu_16(fwd_cmpl->req_len_type) &
 233                    HWRM_FWD_REQ_CMPL_REQ_LEN_MASK) >>
 234                 HWRM_FWD_REQ_CMPL_REQ_LEN_SFT;
 235         if (req_len > sizeof(fwreq->encap_request))
 236                 req_len = sizeof(fwreq->encap_request);
 237
 238         /* Locate VF's forwarded command */
 239         fwd_cmd = (struct input *)bp->pf->vf_info[vf_id].req_buf;
 240
 241         if (fw_vf_id < bp->pf->first_vf_id ||
 242             fw_vf_id >= bp->pf->first_vf_id + bp->pf->active_vfs) {
 243                 PMD_DRV_LOG(ERR,
 244                 "FWD req's source_id 0x%x out of range 0x%x - 0x%x (%d %d)\n",
 245                         fw_vf_id, bp->pf->first_vf_id,
 246                         (bp->pf->first_vf_id) + bp->pf->active_vfs - 1,
 247                         bp->pf->first_vf_id, bp->pf->active_vfs);
 248                 goto reject;
 249         }
 250
 251         if (bnxt_rcv_msg_from_vf(bp, vf_id, fwd_cmd)) {
 252                 /*
 253                  * In older firmware versions, the MAC had to be all zeros for
 254                  * the VF to set it's MAC via hwrm_func_vf_cfg. Set to all
 255                  * zeros if it's being configured and has been ok'd by caller.
 256                  */
 257                 if (fwd_cmd->req_type == HWRM_FUNC_VF_CFG) {
 258                         struct hwrm_func_vf_cfg_input *vfc = (void *)fwd_cmd;
 259
 260                         if (vfc->enables &
 261                             HWRM_FUNC_VF_CFG_INPUT_ENABLES_DFLT_MAC_ADDR) {
 262                                 bnxt_hwrm_func_vf_mac(bp, vf_id,
 263                                 (const uint8_t *)"\x00\x00\x00\x00\x00");
 264                         }
 265                 }
 266
 267                 if (fwd_cmd->req_type == HWRM_CFA_L2_SET_RX_MASK) {
 268                         struct hwrm_cfa_l2_set_rx_mask_input *srm =
 269                                                         (void *)fwd_cmd;
 270
 271                         srm->vlan_tag_tbl_addr = rte_cpu_to_le_64(0);
 272                         srm->num_vlan_tags = rte_cpu_to_le_32(0);
 273                         srm->mask &= ~rte_cpu_to_le_32(
 274                                 HWRM_CFA_L2_SET_RX_MASK_INPUT_MASK_VLANONLY |
 275                             HWRM_CFA_L2_SET_RX_MASK_INPUT_MASK_VLAN_NONVLAN |
 276                             HWRM_CFA_L2_SET_RX_MASK_INPUT_MASK_ANYVLAN_NONVLAN);
 277                 }
 278
 279                 /* Forward */
 280                 rc = bnxt_hwrm_exec_fwd_resp(bp, fw_vf_id, fwd_cmd, req_len);
 281                 if (rc) {
 282                         PMD_DRV_LOG(ERR,
 283                                 "Failed to send FWD req VF 0x%x, type 0x%x.\n",
 284                                 fw_vf_id - bp->pf->first_vf_id,
 285                                 rte_le_to_cpu_16(fwd_cmd->req_type));
 286                 }
 287                 return;
 288         }
 289
 290 reject:
 291         rc = bnxt_hwrm_reject_fwd_resp(bp, fw_vf_id, fwd_cmd, req_len);
 292         if (rc) {
 293                 PMD_DRV_LOG(ERR,
 294                         "Failed to send REJECT req VF 0x%x, type 0x%x.\n",
 295                         fw_vf_id - bp->pf->first_vf_id,
 296                         rte_le_to_cpu_16(fwd_cmd->req_type));
 297         }
 298
 299         return;
 300 }
 301
 302 int bnxt_event_hwrm_resp_handler(struct bnxt *bp, struct cmpl_base *cmp)
 303 {
 304         bool evt = 0;
 305
 306         if (bp == NULL || cmp == NULL) {
 307                 PMD_DRV_LOG(ERR, "invalid NULL argument\n");
 308                 return evt;
 309         }
 310
 311         if (unlikely(is_bnxt_in_error(bp)))
 312                 return 0;
 313
 314         switch (CMP_TYPE(cmp)) {
 315         case CMPL_BASE_TYPE_HWRM_ASYNC_EVENT:
 316                 /* Handle any async event */
 317                 bnxt_handle_async_event(bp, cmp);
 318                 evt = 1;
 319                 break;
 320         case CMPL_BASE_TYPE_HWRM_FWD_REQ:
 321                 /* Handle HWRM forwarded responses */
 322                 bnxt_handle_fwd_req(bp, cmp);
 323                 evt = 1;
 324                 break;
 325         default:
 326                 /* Ignore any other events */
 327                 PMD_DRV_LOG(DEBUG, "Ignoring %02x completion\n", CMP_TYPE(cmp));
 328                 break;
 329         }
 330
 331         return evt;
 332 }
 333
 334 bool bnxt_is_master_func(struct bnxt *bp)
 335 {
 336         if (bp->recovery_info->flags & BNXT_FLAG_MASTER_FUNC)
 337                 return true;
 338
 339         return false;
 340 }
 341
 342 bool bnxt_is_recovery_enabled(struct bnxt *bp)
 343 {
 344         struct bnxt_error_recovery_info *info;
 345
 346         info = bp->recovery_info;
 347         if (info && (info->flags & BNXT_FLAG_RECOVERY_ENABLED))
 348                 return true;
 349
 350         return false;
 351 }
 352
 353 void bnxt_stop_rxtx(struct bnxt *bp)
 354 {
 355         bp->eth_dev->rx_pkt_burst = &bnxt_dummy_recv_pkts;
 356         bp->eth_dev->tx_pkt_burst = &bnxt_dummy_xmit_pkts;
 357 }