+#if EFSYS_OPT_MAC_STATS
+
+typedef enum efx_stats_action_e {
+ EFX_STATS_CLEAR,
+ EFX_STATS_UPLOAD,
+ EFX_STATS_ENABLE_NOEVENTS,
+ EFX_STATS_ENABLE_EVENTS,
+ EFX_STATS_DISABLE,
+} efx_stats_action_t;
+
+static __checkReturn efx_rc_t
+efx_mcdi_mac_stats(
+ __in efx_nic_t *enp,
+ __in_opt efsys_mem_t *esmp,
+ __in efx_stats_action_t action,
+ __in uint16_t period_ms)
+{
+ efx_mcdi_req_t req;
+ uint8_t payload[MAX(MC_CMD_MAC_STATS_IN_LEN,
+ MC_CMD_MAC_STATS_V2_OUT_DMA_LEN)];
+ int clear = (action == EFX_STATS_CLEAR);
+ int upload = (action == EFX_STATS_UPLOAD);
+ int enable = (action == EFX_STATS_ENABLE_NOEVENTS);
+ int events = (action == EFX_STATS_ENABLE_EVENTS);
+ int disable = (action == EFX_STATS_DISABLE);
+ efx_rc_t rc;
+
+ (void) memset(payload, 0, sizeof (payload));
+ req.emr_cmd = MC_CMD_MAC_STATS;
+ req.emr_in_buf = payload;
+ req.emr_in_length = MC_CMD_MAC_STATS_IN_LEN;
+ req.emr_out_buf = payload;
+ req.emr_out_length = MC_CMD_MAC_STATS_V2_OUT_DMA_LEN;
+
+ MCDI_IN_POPULATE_DWORD_6(req, MAC_STATS_IN_CMD,
+ MAC_STATS_IN_DMA, upload,
+ MAC_STATS_IN_CLEAR, clear,
+ MAC_STATS_IN_PERIODIC_CHANGE, enable | events | disable,
+ MAC_STATS_IN_PERIODIC_ENABLE, enable | events,
+ MAC_STATS_IN_PERIODIC_NOEVENT, !events,
+ MAC_STATS_IN_PERIOD_MS, (enable | events) ? period_ms : 0);
+
+ if (enable || events || upload) {
+ const efx_nic_cfg_t *encp = &enp->en_nic_cfg;
+ uint32_t bytes;
+
+ /* Periodic stats or stats upload require a DMA buffer */
+ if (esmp == NULL) {
+ rc = EINVAL;
+ goto fail1;
+ }
+
+ if (encp->enc_mac_stats_nstats < MC_CMD_MAC_NSTATS) {
+ /* MAC stats count too small for legacy MAC stats */
+ rc = ENOSPC;
+ goto fail2;
+ }
+
+ bytes = encp->enc_mac_stats_nstats * sizeof (efx_qword_t);
+
+ if (EFSYS_MEM_SIZE(esmp) < bytes) {
+ /* DMA buffer too small */
+ rc = ENOSPC;
+ goto fail3;
+ }
+
+ MCDI_IN_SET_DWORD(req, MAC_STATS_IN_DMA_ADDR_LO,
+ EFSYS_MEM_ADDR(esmp) & 0xffffffff);
+ MCDI_IN_SET_DWORD(req, MAC_STATS_IN_DMA_ADDR_HI,
+ EFSYS_MEM_ADDR(esmp) >> 32);
+ MCDI_IN_SET_DWORD(req, MAC_STATS_IN_DMA_LEN, bytes);
+ }
+
+ /*
+ * NOTE: Do not use EVB_PORT_ID_ASSIGNED when disabling periodic stats,
+ * as this may fail (and leave periodic DMA enabled) if the
+ * vadapter has already been deleted.
+ */
+ MCDI_IN_SET_DWORD(req, MAC_STATS_IN_PORT_ID,
+ (disable ? EVB_PORT_ID_NULL : enp->en_vport_id));
+
+ efx_mcdi_execute(enp, &req);
+
+ if (req.emr_rc != 0) {
+ /* EF10: Expect ENOENT if no DMA queues are initialised */
+ if ((req.emr_rc != ENOENT) ||
+ (enp->en_rx_qcount + enp->en_tx_qcount != 0)) {
+ rc = req.emr_rc;
+ goto fail4;
+ }
+ }
+
+ return (0);
+
+fail4:
+ EFSYS_PROBE(fail4);
+fail3:
+ EFSYS_PROBE(fail3);
+fail2:
+ EFSYS_PROBE(fail2);
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+ __checkReturn efx_rc_t
+efx_mcdi_mac_stats_clear(
+ __in efx_nic_t *enp)
+{
+ efx_rc_t rc;
+
+ if ((rc = efx_mcdi_mac_stats(enp, NULL, EFX_STATS_CLEAR, 0)) != 0)
+ goto fail1;
+
+ return (0);
+
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+ __checkReturn efx_rc_t
+efx_mcdi_mac_stats_upload(
+ __in efx_nic_t *enp,
+ __in efsys_mem_t *esmp)
+{
+ efx_rc_t rc;
+
+ /*
+ * The MC DMAs aggregate statistics for our convenience, so we can
+ * avoid having to pull the statistics buffer into the cache to
+ * maintain cumulative statistics.
+ */
+ if ((rc = efx_mcdi_mac_stats(enp, esmp, EFX_STATS_UPLOAD, 0)) != 0)
+ goto fail1;
+
+ return (0);
+
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+ __checkReturn efx_rc_t
+efx_mcdi_mac_stats_periodic(
+ __in efx_nic_t *enp,
+ __in efsys_mem_t *esmp,
+ __in uint16_t period_ms,
+ __in boolean_t events)
+{
+ efx_rc_t rc;
+
+ /*
+ * The MC DMAs aggregate statistics for our convenience, so we can
+ * avoid having to pull the statistics buffer into the cache to
+ * maintain cumulative statistics.
+ * Huntington uses a fixed 1sec period.
+ * Medford uses a fixed 1sec period before v6.2.1.1033 firmware.
+ */
+ if (period_ms == 0)
+ rc = efx_mcdi_mac_stats(enp, NULL, EFX_STATS_DISABLE, 0);
+ else if (events)
+ rc = efx_mcdi_mac_stats(enp, esmp, EFX_STATS_ENABLE_EVENTS,
+ period_ms);
+ else
+ rc = efx_mcdi_mac_stats(enp, esmp, EFX_STATS_ENABLE_NOEVENTS,
+ period_ms);
+
+ if (rc != 0)
+ goto fail1;
+
+ return (0);
+
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
+#endif /* EFSYS_OPT_MAC_STATS */
+
+#if EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD || EFSYS_OPT_MEDFORD2