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