drivers/net/bnxt/bnxt_cpr.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2014-2018 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 /*
  50  * Async event handling
  51  */
  52 void bnxt_handle_async_event(struct bnxt *bp,
  53                              struct cmpl_base *cmp)
  54 {
  55         struct hwrm_async_event_cmpl *async_cmp =
  56                                 (struct hwrm_async_event_cmpl *)cmp;
  57         uint16_t event_id = rte_le_to_cpu_16(async_cmp->event_id);
  58         struct bnxt_error_recovery_info *info;
  59         uint32_t event_data;
  60
  61         switch (event_id) {
  62         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_LINK_STATUS_CHANGE:
  63         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_LINK_SPEED_CHANGE:
  64         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_LINK_SPEED_CFG_CHANGE:
  65                 /* FALLTHROUGH */
  66                 bnxt_link_update(bp->eth_dev, 0, ETH_LINK_UP);
  67                 break;
  68         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_PF_DRVR_UNLOAD:
  69                 PMD_DRV_LOG(INFO, "Async event: PF driver unloaded\n");
  70                 break;
  71         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_VF_CFG_CHANGE:
  72                 PMD_DRV_LOG(INFO, "Async event: VF config changed\n");
  73                 bnxt_hwrm_func_qcfg(bp, NULL);
  74                 break;
  75         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_PORT_CONN_NOT_ALLOWED:
  76                 PMD_DRV_LOG(INFO, "Port conn async event\n");
  77                 break;
  78         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_RESET_NOTIFY:
  79                 /* Ignore reset notify async events when stopping the port */
  80                 if (!bp->eth_dev->data->dev_started) {
  81                         bp->flags |= BNXT_FLAG_FATAL_ERROR;
  82                         return;
  83                 }
  84
  85                 event_data = rte_le_to_cpu_32(async_cmp->event_data1);
  86                 /* timestamp_lo/hi values are in units of 100ms */
  87                 bp->fw_reset_max_msecs = async_cmp->timestamp_hi ?
  88                         rte_le_to_cpu_16(async_cmp->timestamp_hi) * 100 :
  89                         BNXT_MAX_FW_RESET_TIMEOUT;
  90                 bp->fw_reset_min_msecs = async_cmp->timestamp_lo ?
  91                         async_cmp->timestamp_lo * 100 :
  92                         BNXT_MIN_FW_READY_TIMEOUT;
  93                 if ((event_data & EVENT_DATA1_REASON_CODE_MASK) ==
  94                     EVENT_DATA1_REASON_CODE_FW_EXCEPTION_FATAL) {
  95                         PMD_DRV_LOG(INFO,
  96                                     "Firmware fatal reset event received\n");
  97                         bp->flags |= BNXT_FLAG_FATAL_ERROR;
  98                 } else {
  99                         PMD_DRV_LOG(INFO,
 100                                     "Firmware non-fatal reset event received\n");
 101                 }
 102
 103                 bp->flags |= BNXT_FLAG_FW_RESET;
 104                 rte_eal_alarm_set(US_PER_MS, bnxt_dev_reset_and_resume,
 105                                   (void *)bp);
 106                 break;
 107         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_ERROR_RECOVERY:
 108                 info = bp->recovery_info;
 109
 110                 if (!info)
 111                         return;
 112
 113                 PMD_DRV_LOG(INFO, "Error recovery async event received\n");
 114
 115                 event_data = rte_le_to_cpu_32(async_cmp->event_data1) &
 116                                 EVENT_DATA1_FLAGS_MASK;
 117
 118                 if (event_data & EVENT_DATA1_FLAGS_MASTER_FUNC)
 119                         info->flags |= BNXT_FLAG_MASTER_FUNC;
 120                 else
 121                         info->flags &= ~BNXT_FLAG_MASTER_FUNC;
 122
 123                 if (event_data & EVENT_DATA1_FLAGS_RECOVERY_ENABLED)
 124                         info->flags |= BNXT_FLAG_RECOVERY_ENABLED;
 125                 else
 126                         info->flags &= ~BNXT_FLAG_RECOVERY_ENABLED;
 127
 128                 PMD_DRV_LOG(INFO, "recovery enabled(%d), master function(%d)\n",
 129                             bnxt_is_recovery_enabled(bp),
 130                             bnxt_is_master_func(bp));
 131
 132                 if (bp->flags & BNXT_FLAG_FW_HEALTH_CHECK_SCHEDULED)
 133                         return;
 134
 135                 info->last_heart_beat =
 136                         bnxt_read_fw_status_reg(bp, BNXT_FW_HEARTBEAT_CNT_REG);
 137                 info->last_reset_counter =
 138                         bnxt_read_fw_status_reg(bp, BNXT_FW_RECOVERY_CNT_REG);
 139
 140                 bnxt_schedule_fw_health_check(bp);
 141                 break;
 142         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_DEBUG_NOTIFICATION:
 143                 PMD_DRV_LOG(INFO, "DNC event: evt_data1 %#x evt_data2 %#x\n",
 144                             rte_le_to_cpu_32(async_cmp->event_data1),
 145                             rte_le_to_cpu_32(async_cmp->event_data2));
 146                 break;
 147         default:
 148                 PMD_DRV_LOG(DEBUG, "handle_async_event id = 0x%x\n", event_id);
 149                 break;
 150         }
 151 }
 152
 153 void bnxt_handle_fwd_req(struct bnxt *bp, struct cmpl_base *cmpl)
 154 {
 155         struct hwrm_exec_fwd_resp_input *fwreq;
 156         struct hwrm_fwd_req_cmpl *fwd_cmpl = (struct hwrm_fwd_req_cmpl *)cmpl;
 157         struct input *fwd_cmd;
 158         uint16_t fw_vf_id;
 159         uint16_t vf_id;
 160         uint16_t req_len;
 161         int rc;
 162
 163         if (bp->pf.active_vfs <= 0) {
 164                 PMD_DRV_LOG(ERR, "Forwarded VF with no active VFs\n");
 165                 return;
 166         }
 167
 168         /* Qualify the fwd request */
 169         fw_vf_id = rte_le_to_cpu_16(fwd_cmpl->source_id);
 170         vf_id = fw_vf_id - bp->pf.first_vf_id;
 171
 172         req_len = (rte_le_to_cpu_16(fwd_cmpl->req_len_type) &
 173                    HWRM_FWD_REQ_CMPL_REQ_LEN_MASK) >>
 174                 HWRM_FWD_REQ_CMPL_REQ_LEN_SFT;
 175         if (req_len > sizeof(fwreq->encap_request))
 176                 req_len = sizeof(fwreq->encap_request);
 177
 178         /* Locate VF's forwarded command */
 179         fwd_cmd = (struct input *)bp->pf.vf_info[vf_id].req_buf;
 180
 181         if (fw_vf_id < bp->pf.first_vf_id ||
 182             fw_vf_id >= (bp->pf.first_vf_id) + bp->pf.active_vfs) {
 183                 PMD_DRV_LOG(ERR,
 184                 "FWD req's source_id 0x%x out of range 0x%x - 0x%x (%d %d)\n",
 185                         fw_vf_id, bp->pf.first_vf_id,
 186                         (bp->pf.first_vf_id) + bp->pf.active_vfs - 1,
 187                         bp->pf.first_vf_id, bp->pf.active_vfs);
 188                 goto reject;
 189         }
 190
 191         if (bnxt_rcv_msg_from_vf(bp, vf_id, fwd_cmd) == true) {
 192                 /*
 193                  * In older firmware versions, the MAC had to be all zeros for
 194                  * the VF to set it's MAC via hwrm_func_vf_cfg. Set to all
 195                  * zeros if it's being configured and has been ok'd by caller.
 196                  */
 197                 if (fwd_cmd->req_type == HWRM_FUNC_VF_CFG) {
 198                         struct hwrm_func_vf_cfg_input *vfc = (void *)fwd_cmd;
 199
 200                         if (vfc->enables &
 201                             HWRM_FUNC_VF_CFG_INPUT_ENABLES_DFLT_MAC_ADDR) {
 202                                 bnxt_hwrm_func_vf_mac(bp, vf_id,
 203                                 (const uint8_t *)"\x00\x00\x00\x00\x00");
 204                         }
 205                 }
 206                 if (fwd_cmd->req_type == HWRM_CFA_L2_SET_RX_MASK) {
 207                         struct hwrm_cfa_l2_set_rx_mask_input *srm =
 208                                                         (void *)fwd_cmd;
 209
 210                         srm->vlan_tag_tbl_addr = rte_cpu_to_le_64(0);
 211                         srm->num_vlan_tags = rte_cpu_to_le_32(0);
 212                         srm->mask &= ~rte_cpu_to_le_32(
 213                                 HWRM_CFA_L2_SET_RX_MASK_INPUT_MASK_VLANONLY |
 214                             HWRM_CFA_L2_SET_RX_MASK_INPUT_MASK_VLAN_NONVLAN |
 215                             HWRM_CFA_L2_SET_RX_MASK_INPUT_MASK_ANYVLAN_NONVLAN);
 216                 }
 217                 /* Forward */
 218                 rc = bnxt_hwrm_exec_fwd_resp(bp, fw_vf_id, fwd_cmd, req_len);
 219                 if (rc) {
 220                         PMD_DRV_LOG(ERR,
 221                                 "Failed to send FWD req VF 0x%x, type 0x%x.\n",
 222                                 fw_vf_id - bp->pf.first_vf_id,
 223                                 rte_le_to_cpu_16(fwd_cmd->req_type));
 224                 }
 225                 return;
 226         }
 227
 228 reject:
 229         rc = bnxt_hwrm_reject_fwd_resp(bp, fw_vf_id, fwd_cmd, req_len);
 230         if (rc) {
 231                 PMD_DRV_LOG(ERR,
 232                         "Failed to send REJECT req VF 0x%x, type 0x%x.\n",
 233                         fw_vf_id - bp->pf.first_vf_id,
 234                         rte_le_to_cpu_16(fwd_cmd->req_type));
 235         }
 236
 237         return;
 238 }
 239
 240 int bnxt_event_hwrm_resp_handler(struct bnxt *bp, struct cmpl_base *cmp)
 241 {
 242         bool evt = 0;
 243
 244         if (bp == NULL || cmp == NULL) {
 245                 PMD_DRV_LOG(ERR, "invalid NULL argument\n");
 246                 return evt;
 247         }
 248
 249         if (unlikely(is_bnxt_in_error(bp)))
 250                 return 0;
 251
 252         switch (CMP_TYPE(cmp)) {
 253         case CMPL_BASE_TYPE_HWRM_ASYNC_EVENT:
 254                 /* Handle any async event */
 255                 bnxt_handle_async_event(bp, cmp);
 256                 evt = 1;
 257                 break;
 258         case CMPL_BASE_TYPE_HWRM_FWD_RESP:
 259                 /* Handle HWRM forwarded responses */
 260                 bnxt_handle_fwd_req(bp, cmp);
 261                 evt = 1;
 262                 break;
 263         default:
 264                 /* Ignore any other events */
 265                 PMD_DRV_LOG(DEBUG, "Ignoring %02x completion\n", CMP_TYPE(cmp));
 266                 break;
 267         }
 268
 269         return evt;
 270 }
 271
 272 bool bnxt_is_master_func(struct bnxt *bp)
 273 {
 274         if (bp->recovery_info->flags & BNXT_FLAG_MASTER_FUNC)
 275                 return true;
 276
 277         return false;
 278 }
 279
 280 bool bnxt_is_recovery_enabled(struct bnxt *bp)
 281 {
 282         struct bnxt_error_recovery_info *info;
 283
 284         info = bp->recovery_info;
 285         if (info && (info->flags & BNXT_FLAG_RECOVERY_ENABLED))
 286                 return true;
 287
 288         return false;
 289 }