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