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_cpr.h"
  12 #include "bnxt_hwrm.h"
  13 #include "bnxt_ring.h"
  14 #include "hsi_struct_def_dpdk.h"
  15
  16 void bnxt_wait_for_device_shutdown(struct bnxt *bp)
  17 {
  18         uint32_t val, timeout;
  19
  20         /* if HWRM_FUNC_QCAPS_OUTPUT_FLAGS_ERR_RECOVER_RELOAD is set
  21          * in HWRM_FUNC_QCAPS command, wait for FW_STATUS to set
  22          * the SHUTDOWN bit in health register
  23          */
  24         if (!(bp->recovery_info &&
  25               (bp->flags & BNXT_FLAG_FW_CAP_ERR_RECOVER_RELOAD)))
  26                 return;
  27
  28         /* Driver has to wait for fw_reset_max_msecs or shutdown bit which comes
  29          * first for FW to collect crash dump.
  30          */
  31         timeout = bp->fw_reset_max_msecs;
  32
  33         /* Driver has to poll for shutdown bit in fw_status register
  34          *
  35          * 1. in case of hot fw upgrade, this bit will be set after all
  36          *    function drivers unregistered with fw.
  37          * 2. in case of fw initiated error recovery, this bit will be
  38          *    set after fw has collected the core dump
  39          */
  40         do {
  41                 val = bnxt_read_fw_status_reg(bp, BNXT_FW_STATUS_REG);
  42                 if (val & BNXT_FW_STATUS_SHUTDOWN)
  43                         return;
  44
  45                 rte_delay_ms(100);
  46                 timeout -= 100;
  47         } while (timeout);
  48 }
  49
  50 /*
  51  * Async event handling
  52  */
  53 void bnxt_handle_async_event(struct bnxt *bp,
  54                              struct cmpl_base *cmp)
  55 {
  56         struct hwrm_async_event_cmpl *async_cmp =
  57                                 (struct hwrm_async_event_cmpl *)cmp;
  58         uint16_t event_id = rte_le_to_cpu_16(async_cmp->event_id);
  59         struct bnxt_error_recovery_info *info;
  60         uint32_t event_data;
  61
  62         /* TODO: HWRM async events are not defined yet */
  63         /* Needs to handle: link events, error events, etc. */
  64         switch (event_id) {
  65         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_LINK_STATUS_CHANGE:
  66         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_LINK_SPEED_CHANGE:
  67         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_LINK_SPEED_CFG_CHANGE:
  68                 /* FALLTHROUGH */
  69                 bnxt_link_update_op(bp->eth_dev, 0);
  70                 break;
  71         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_PF_DRVR_UNLOAD:
  72                 PMD_DRV_LOG(INFO, "Async event: PF driver unloaded\n");
  73                 break;
  74         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_VF_CFG_CHANGE:
  75                 PMD_DRV_LOG(INFO, "Async event: VF config changed\n");
  76                 bnxt_hwrm_func_qcfg(bp, NULL);
  77                 break;
  78         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_PORT_CONN_NOT_ALLOWED:
  79                 PMD_DRV_LOG(INFO, "Port conn async event\n");
  80                 break;
  81         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_RESET_NOTIFY:
  82                 event_data = rte_le_to_cpu_32(async_cmp->event_data1);
  83                 /* timestamp_lo/hi values are in units of 100ms */
  84                 bp->fw_reset_max_msecs = async_cmp->timestamp_hi ?
  85                         rte_le_to_cpu_16(async_cmp->timestamp_hi) * 100 :
  86                         BNXT_MAX_FW_RESET_TIMEOUT;
  87                 bp->fw_reset_min_msecs = async_cmp->timestamp_lo ?
  88                         async_cmp->timestamp_lo * 100 :
  89                         BNXT_MIN_FW_READY_TIMEOUT;
  90                 if ((event_data & EVENT_DATA1_REASON_CODE_MASK) ==
  91                     EVENT_DATA1_REASON_CODE_FW_EXCEPTION_FATAL) {
  92                         PMD_DRV_LOG(INFO,
  93                                     "Firmware fatal reset event received\n");
  94                         bp->flags |= BNXT_FLAG_FATAL_ERROR;
  95                 } else {
  96                         PMD_DRV_LOG(INFO,
  97                                     "Firmware non-fatal reset event received\n");
  98                 }
  99
 100                 bp->flags |= BNXT_FLAG_FW_RESET;
 101                 rte_eal_alarm_set(US_PER_MS, bnxt_dev_reset_and_resume,
 102                                   (void *)bp);
 103                 break;
 104         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_ERROR_RECOVERY:
 105                 info = bp->recovery_info;
 106
 107                 if (!info)
 108                         return;
 109
 110                 PMD_DRV_LOG(INFO, "Error recovery async event received\n");
 111
 112                 event_data = rte_le_to_cpu_32(async_cmp->event_data1) &
 113                                 EVENT_DATA1_FLAGS_MASK;
 114
 115                 if (event_data & EVENT_DATA1_FLAGS_MASTER_FUNC)
 116                         info->flags |= BNXT_FLAG_MASTER_FUNC;
 117                 else
 118                         info->flags &= ~BNXT_FLAG_MASTER_FUNC;
 119
 120                 if (event_data & EVENT_DATA1_FLAGS_RECOVERY_ENABLED)
 121                         info->flags |= BNXT_FLAG_RECOVERY_ENABLED;
 122                 else
 123                         info->flags &= ~BNXT_FLAG_RECOVERY_ENABLED;
 124
 125                 PMD_DRV_LOG(INFO, "recovery enabled(%d), master function(%d)\n",
 126                             bnxt_is_recovery_enabled(bp),
 127                             bnxt_is_master_func(bp));
 128
 129                 if (bp->flags & BNXT_FLAG_FW_HEALTH_CHECK_SCHEDULED)
 130                         return;
 131
 132                 info->last_heart_beat =
 133                         bnxt_read_fw_status_reg(bp, BNXT_FW_HEARTBEAT_CNT_REG);
 134                 info->last_reset_counter =
 135                         bnxt_read_fw_status_reg(bp, BNXT_FW_RECOVERY_CNT_REG);
 136
 137                 bnxt_schedule_fw_health_check(bp);
 138                 break;
 139         default:
 140                 PMD_DRV_LOG(DEBUG, "handle_async_event id = 0x%x\n", event_id);
 141                 break;
 142         }
 143 }
 144
 145 void bnxt_handle_fwd_req(struct bnxt *bp, struct cmpl_base *cmpl)
 146 {
 147         struct hwrm_exec_fwd_resp_input *fwreq;
 148         struct hwrm_fwd_req_cmpl *fwd_cmpl = (struct hwrm_fwd_req_cmpl *)cmpl;
 149         struct input *fwd_cmd;
 150         uint16_t fw_vf_id;
 151         uint16_t vf_id;
 152         uint16_t req_len;
 153         int rc;
 154
 155         if (bp->pf.active_vfs <= 0) {
 156                 PMD_DRV_LOG(ERR, "Forwarded VF with no active VFs\n");
 157                 return;
 158         }
 159
 160         /* Qualify the fwd request */
 161         fw_vf_id = rte_le_to_cpu_16(fwd_cmpl->source_id);
 162         vf_id = fw_vf_id - bp->pf.first_vf_id;
 163
 164         req_len = (rte_le_to_cpu_16(fwd_cmpl->req_len_type) &
 165                    HWRM_FWD_REQ_CMPL_REQ_LEN_MASK) >>
 166                 HWRM_FWD_REQ_CMPL_REQ_LEN_SFT;
 167         if (req_len > sizeof(fwreq->encap_request))
 168                 req_len = sizeof(fwreq->encap_request);
 169
 170         /* Locate VF's forwarded command */
 171         fwd_cmd = (struct input *)bp->pf.vf_info[vf_id].req_buf;
 172
 173         if (fw_vf_id < bp->pf.first_vf_id ||
 174             fw_vf_id >= (bp->pf.first_vf_id) + bp->pf.active_vfs) {
 175                 PMD_DRV_LOG(ERR,
 176                 "FWD req's source_id 0x%x out of range 0x%x - 0x%x (%d %d)\n",
 177                         fw_vf_id, bp->pf.first_vf_id,
 178                         (bp->pf.first_vf_id) + bp->pf.active_vfs - 1,
 179                         bp->pf.first_vf_id, bp->pf.active_vfs);
 180                 goto reject;
 181         }
 182
 183         if (bnxt_rcv_msg_from_vf(bp, vf_id, fwd_cmd) == true) {
 184                 /*
 185                  * In older firmware versions, the MAC had to be all zeros for
 186                  * the VF to set it's MAC via hwrm_func_vf_cfg. Set to all
 187                  * zeros if it's being configured and has been ok'd by caller.
 188                  */
 189                 if (fwd_cmd->req_type == HWRM_FUNC_VF_CFG) {
 190                         struct hwrm_func_vf_cfg_input *vfc = (void *)fwd_cmd;
 191
 192                         if (vfc->enables &
 193                             HWRM_FUNC_VF_CFG_INPUT_ENABLES_DFLT_MAC_ADDR) {
 194                                 bnxt_hwrm_func_vf_mac(bp, vf_id,
 195                                 (const uint8_t *)"\x00\x00\x00\x00\x00");
 196                         }
 197                 }
 198                 if (fwd_cmd->req_type == HWRM_CFA_L2_SET_RX_MASK) {
 199                         struct hwrm_cfa_l2_set_rx_mask_input *srm =
 200                                                         (void *)fwd_cmd;
 201
 202                         srm->vlan_tag_tbl_addr = rte_cpu_to_le_64(0);
 203                         srm->num_vlan_tags = rte_cpu_to_le_32(0);
 204                         srm->mask &= ~rte_cpu_to_le_32(
 205                                 HWRM_CFA_L2_SET_RX_MASK_INPUT_MASK_VLANONLY |
 206                             HWRM_CFA_L2_SET_RX_MASK_INPUT_MASK_VLAN_NONVLAN |
 207                             HWRM_CFA_L2_SET_RX_MASK_INPUT_MASK_ANYVLAN_NONVLAN);
 208                 }
 209                 /* Forward */
 210                 rc = bnxt_hwrm_exec_fwd_resp(bp, fw_vf_id, fwd_cmd, req_len);
 211                 if (rc) {
 212                         PMD_DRV_LOG(ERR,
 213                                 "Failed to send FWD req VF 0x%x, type 0x%x.\n",
 214                                 fw_vf_id - bp->pf.first_vf_id,
 215                                 rte_le_to_cpu_16(fwd_cmd->req_type));
 216                 }
 217                 return;
 218         }
 219
 220 reject:
 221         rc = bnxt_hwrm_reject_fwd_resp(bp, fw_vf_id, fwd_cmd, req_len);
 222         if (rc) {
 223                 PMD_DRV_LOG(ERR,
 224                         "Failed to send REJECT req VF 0x%x, type 0x%x.\n",
 225                         fw_vf_id - bp->pf.first_vf_id,
 226                         rte_le_to_cpu_16(fwd_cmd->req_type));
 227         }
 228
 229         return;
 230 }
 231
 232 int bnxt_event_hwrm_resp_handler(struct bnxt *bp, struct cmpl_base *cmp)
 233 {
 234         bool evt = 0;
 235
 236         if (bp == NULL || cmp == NULL) {
 237                 PMD_DRV_LOG(ERR, "invalid NULL argument\n");
 238                 return evt;
 239         }
 240
 241         if (unlikely(is_bnxt_in_error(bp)))
 242                 return 0;
 243
 244         switch (CMP_TYPE(cmp)) {
 245         case CMPL_BASE_TYPE_HWRM_ASYNC_EVENT:
 246                 /* Handle any async event */
 247                 bnxt_handle_async_event(bp, cmp);
 248                 evt = 1;
 249                 break;
 250         case CMPL_BASE_TYPE_HWRM_FWD_RESP:
 251                 /* Handle HWRM forwarded responses */
 252                 bnxt_handle_fwd_req(bp, cmp);
 253                 evt = 1;
 254                 break;
 255         default:
 256                 /* Ignore any other events */
 257                 PMD_DRV_LOG(DEBUG, "Ignoring %02x completion\n", CMP_TYPE(cmp));
 258                 break;
 259         }
 260
 261         return evt;
 262 }
 263
 264 bool bnxt_is_master_func(struct bnxt *bp)
 265 {
 266         if (bp->recovery_info->flags & BNXT_FLAG_MASTER_FUNC)
 267                 return true;
 268
 269         return false;
 270 }
 271
 272 bool bnxt_is_recovery_enabled(struct bnxt *bp)
 273 {
 274         struct bnxt_error_recovery_info *info;
 275
 276         info = bp->recovery_info;
 277         if (info && (info->flags & BNXT_FLAG_RECOVERY_ENABLED))
 278                 return true;
 279
 280         return false;
 281 }