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_op(bp->eth_dev, 0);
  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         default:
 137                 PMD_DRV_LOG(DEBUG, "handle_async_event id = 0x%x\n", event_id);
 138                 break;
 139         }
 140 }
 141
 142 void bnxt_handle_fwd_req(struct bnxt *bp, struct cmpl_base *cmpl)
 143 {
 144         struct hwrm_exec_fwd_resp_input *fwreq;
 145         struct hwrm_fwd_req_cmpl *fwd_cmpl = (struct hwrm_fwd_req_cmpl *)cmpl;
 146         struct input *fwd_cmd;
 147         uint16_t fw_vf_id;
 148         uint16_t vf_id;
 149         uint16_t req_len;
 150         int rc;
 151
 152         if (bp->pf.active_vfs <= 0) {
 153                 PMD_DRV_LOG(ERR, "Forwarded VF with no active VFs\n");
 154                 return;
 155         }
 156
 157         /* Qualify the fwd request */
 158         fw_vf_id = rte_le_to_cpu_16(fwd_cmpl->source_id);
 159         vf_id = fw_vf_id - bp->pf.first_vf_id;
 160
 161         req_len = (rte_le_to_cpu_16(fwd_cmpl->req_len_type) &
 162                    HWRM_FWD_REQ_CMPL_REQ_LEN_MASK) >>
 163                 HWRM_FWD_REQ_CMPL_REQ_LEN_SFT;
 164         if (req_len > sizeof(fwreq->encap_request))
 165                 req_len = sizeof(fwreq->encap_request);
 166
 167         /* Locate VF's forwarded command */
 168         fwd_cmd = (struct input *)bp->pf.vf_info[vf_id].req_buf;
 169
 170         if (fw_vf_id < bp->pf.first_vf_id ||
 171             fw_vf_id >= (bp->pf.first_vf_id) + bp->pf.active_vfs) {
 172                 PMD_DRV_LOG(ERR,
 173                 "FWD req's source_id 0x%x out of range 0x%x - 0x%x (%d %d)\n",
 174                         fw_vf_id, bp->pf.first_vf_id,
 175                         (bp->pf.first_vf_id) + bp->pf.active_vfs - 1,
 176                         bp->pf.first_vf_id, bp->pf.active_vfs);
 177                 goto reject;
 178         }
 179
 180         if (bnxt_rcv_msg_from_vf(bp, vf_id, fwd_cmd) == true) {
 181                 /*
 182                  * In older firmware versions, the MAC had to be all zeros for
 183                  * the VF to set it's MAC via hwrm_func_vf_cfg. Set to all
 184                  * zeros if it's being configured and has been ok'd by caller.
 185                  */
 186                 if (fwd_cmd->req_type == HWRM_FUNC_VF_CFG) {
 187                         struct hwrm_func_vf_cfg_input *vfc = (void *)fwd_cmd;
 188
 189                         if (vfc->enables &
 190                             HWRM_FUNC_VF_CFG_INPUT_ENABLES_DFLT_MAC_ADDR) {
 191                                 bnxt_hwrm_func_vf_mac(bp, vf_id,
 192                                 (const uint8_t *)"\x00\x00\x00\x00\x00");
 193                         }
 194                 }
 195                 if (fwd_cmd->req_type == HWRM_CFA_L2_SET_RX_MASK) {
 196                         struct hwrm_cfa_l2_set_rx_mask_input *srm =
 197                                                         (void *)fwd_cmd;
 198
 199                         srm->vlan_tag_tbl_addr = rte_cpu_to_le_64(0);
 200                         srm->num_vlan_tags = rte_cpu_to_le_32(0);
 201                         srm->mask &= ~rte_cpu_to_le_32(
 202                                 HWRM_CFA_L2_SET_RX_MASK_INPUT_MASK_VLANONLY |
 203                             HWRM_CFA_L2_SET_RX_MASK_INPUT_MASK_VLAN_NONVLAN |
 204                             HWRM_CFA_L2_SET_RX_MASK_INPUT_MASK_ANYVLAN_NONVLAN);
 205                 }
 206                 /* Forward */
 207                 rc = bnxt_hwrm_exec_fwd_resp(bp, fw_vf_id, fwd_cmd, req_len);
 208                 if (rc) {
 209                         PMD_DRV_LOG(ERR,
 210                                 "Failed to send FWD req VF 0x%x, type 0x%x.\n",
 211                                 fw_vf_id - bp->pf.first_vf_id,
 212                                 rte_le_to_cpu_16(fwd_cmd->req_type));
 213                 }
 214                 return;
 215         }
 216
 217 reject:
 218         rc = bnxt_hwrm_reject_fwd_resp(bp, fw_vf_id, fwd_cmd, req_len);
 219         if (rc) {
 220                 PMD_DRV_LOG(ERR,
 221                         "Failed to send REJECT 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
 226         return;
 227 }
 228
 229 int bnxt_event_hwrm_resp_handler(struct bnxt *bp, struct cmpl_base *cmp)
 230 {
 231         bool evt = 0;
 232
 233         if (bp == NULL || cmp == NULL) {
 234                 PMD_DRV_LOG(ERR, "invalid NULL argument\n");
 235                 return evt;
 236         }
 237
 238         if (unlikely(is_bnxt_in_error(bp)))
 239                 return 0;
 240
 241         switch (CMP_TYPE(cmp)) {
 242         case CMPL_BASE_TYPE_HWRM_ASYNC_EVENT:
 243                 /* Handle any async event */
 244                 bnxt_handle_async_event(bp, cmp);
 245                 evt = 1;
 246                 break;
 247         case CMPL_BASE_TYPE_HWRM_FWD_RESP:
 248                 /* Handle HWRM forwarded responses */
 249                 bnxt_handle_fwd_req(bp, cmp);
 250                 evt = 1;
 251                 break;
 252         default:
 253                 /* Ignore any other events */
 254                 PMD_DRV_LOG(DEBUG, "Ignoring %02x completion\n", CMP_TYPE(cmp));
 255                 break;
 256         }
 257
 258         return evt;
 259 }
 260
 261 bool bnxt_is_master_func(struct bnxt *bp)
 262 {
 263         if (bp->recovery_info->flags & BNXT_FLAG_MASTER_FUNC)
 264                 return true;
 265
 266         return false;
 267 }
 268
 269 bool bnxt_is_recovery_enabled(struct bnxt *bp)
 270 {
 271         struct bnxt_error_recovery_info *info;
 272
 273         info = bp->recovery_info;
 274         if (info && (info->flags & BNXT_FLAG_RECOVERY_ENABLED))
 275                 return true;
 276
 277         return false;
 278 }