diff options
Diffstat (limited to 'drivers/net/ethernet/sfc/mcdi.c')
| -rw-r--r-- | drivers/net/ethernet/sfc/mcdi.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/net/ethernet/sfc/mcdi.c b/drivers/net/ethernet/sfc/mcdi.c index 25f91c0ca6a6..da14e2428944 100644 --- a/drivers/net/ethernet/sfc/mcdi.c +++ b/drivers/net/ethernet/sfc/mcdi.c @@ -543,6 +543,9 @@ int efx_mcdi_rpc_start(struct efx_nic *efx, unsigned cmd, if (rc) return rc; + if (efx->mc_bist_for_other_fn) + return -ENETDOWN; + efx_mcdi_acquire_sync(mcdi); efx_mcdi_send_request(efx, cmd, inbuf, inlen); return 0; @@ -581,6 +584,9 @@ efx_mcdi_rpc_async(struct efx_nic *efx, unsigned int cmd, if (rc) return rc; + if (efx->mc_bist_for_other_fn) + return -ENETDOWN; + async = kmalloc(sizeof(*async) + ALIGN(max(inlen, outlen), 4), GFP_ATOMIC); if (!async) @@ -834,6 +840,30 @@ static void efx_mcdi_ev_death(struct efx_nic *efx, int rc) spin_unlock(&mcdi->iface_lock); } +/* The MC is going down in to BIST mode. set the BIST flag to block + * new MCDI, cancel any outstanding MCDI and and schedule a BIST-type reset + * (which doesn't actually execute a reset, it waits for the controlling + * function to reset it). + */ +static void efx_mcdi_ev_bist(struct efx_nic *efx) +{ + struct efx_mcdi_iface *mcdi = efx_mcdi(efx); + + spin_lock(&mcdi->iface_lock); + efx->mc_bist_for_other_fn = true; + if (efx_mcdi_complete_sync(mcdi)) { + if (mcdi->mode == MCDI_MODE_EVENTS) { + mcdi->resprc = -EIO; + mcdi->resp_hdr_len = 0; + mcdi->resp_data_len = 0; + ++mcdi->credits; + } + } + mcdi->new_epoch = true; + efx_schedule_reset(efx, RESET_TYPE_MC_BIST); + spin_unlock(&mcdi->iface_lock); +} + /* Called from falcon_process_eventq for MCDI events */ void efx_mcdi_process_event(struct efx_channel *channel, efx_qword_t *event) @@ -875,6 +905,10 @@ void efx_mcdi_process_event(struct efx_channel *channel, netif_info(efx, hw, efx->net_dev, "MC Reboot\n"); efx_mcdi_ev_death(efx, -EIO); break; + case MCDI_EVENT_CODE_MC_BIST: + netif_info(efx, hw, efx->net_dev, "MC entered BIST mode\n"); + efx_mcdi_ev_bist(efx); + break; case MCDI_EVENT_CODE_MAC_STATS_DMA: /* MAC stats are gather lazily. We can ignore this. */ break; |