diff options
Diffstat (limited to 'drivers/net/ethernet/pensando/ionic/ionic_dev.c')
| -rw-r--r-- | drivers/net/ethernet/pensando/ionic/ionic_dev.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_dev.c b/drivers/net/ethernet/pensando/ionic/ionic_dev.c index d168a6435322..544a9f799afc 100644 --- a/drivers/net/ethernet/pensando/ionic/ionic_dev.c +++ b/drivers/net/ethernet/pensando/ionic/ionic_dev.c @@ -84,6 +84,49 @@ void ionic_dev_teardown(struct ionic *ionic) } /* Devcmd Interface */ +int ionic_heartbeat_check(struct ionic *ionic) +{ + struct ionic_dev *idev = &ionic->idev; + unsigned long hb_time; + u32 fw_status; + u32 hb; + + /* wait a little more than one second before testing again */ + hb_time = jiffies; + if (time_before(hb_time, (idev->last_hb_time + (HZ * 2)))) + return 0; + + /* firmware is useful only if fw_status is non-zero */ + fw_status = ioread32(&idev->dev_info_regs->fw_status); + if (!fw_status) + return -ENXIO; + + /* early FW has no heartbeat, else FW will return non-zero */ + hb = ioread32(&idev->dev_info_regs->fw_heartbeat); + if (!hb) + return 0; + + /* are we stalled? */ + if (hb == idev->last_hb) { + /* only complain once for each stall seen */ + if (idev->last_hb_time != 1) { + dev_info(ionic->dev, "FW heartbeat stalled at %d\n", + idev->last_hb); + idev->last_hb_time = 1; + } + + return -ENXIO; + } + + if (idev->last_hb_time == 1) + dev_info(ionic->dev, "FW heartbeat restored at %d\n", hb); + + idev->last_hb = hb; + idev->last_hb_time = hb_time; + + return 0; +} + u8 ionic_dev_cmd_status(struct ionic_dev *idev) { return ioread8(&idev->dev_cmd_regs->comp.comp.status); |